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Takeuchi compact excavator TB108 (Serial No. 10820001~). Operators Manual - page 2

CONTROLS

Instruments

HOURS

4

1/10

1

2

3

°C

B5B0061

Warning Lamps

Meters

IMPORTANT: If a warning lamp lights,

3. Hour Meter

stop all operations immediately and

This displays the total

inspect and maintain the appropriate part.

engine running time in

Refer to page 131 “Troubleshooting”.

hours.

C4B016

The rightmost digit indicates

1. Battery Charge Warning Lamp

tenths of hours (6 minutes).

This lamp lights if a problem

Set the inspection and maintenance intervals

arises in the charging

according to the time displayed on the hour

system while the engine is

meter.

C4B030

running.

4. Water Temperature Gauge

2. Engine Oil Pressure Warning Lamp

This

indicates

the

This lamp lights if the

°C

temperature of the engine

lubricant oil pressure drops

coolant.

B5B007

abnormally while the engine

The needle should be within

C4B031

is running.

the green range during machine operation.

The red range indicates overheating.

41

CONTROLS

Switches

Starter Switch

Horn Switch

OFF

PREHEAT

ON

START

E4B010

B5B008

IMPORTANT: Do not repeatedly switch

Press the switch on the right operating lever

the key from OFF to ON and ON to OFF

to blow the horn.

over a short period. Doing so will cause

engine breakdown.

PREHEAT

Position for preheating the

Boom Light

engine.

OFF

Position for stopping the

engine and inserting or

removing the key.

ON

Position in which the engine

is running. At this position, all

the electrical equipment is

I

functional.

START

Position for starting the

O

B5B009

engine. When the key is

released, the switch

When the switch is depressed while the

automatically returns to the

starter switch is at ON, the light turns on or

ON position.

off as follows:

O

Off

I

On

42

CONTROLS

Levers and Pedals

Safety Lock Lever

Slew Lock Lever

WARNING

WARNING

¡Before leaving the operator’s seat,

Engage the slew lock when traveling,

raise the safety lock lever to engage

parking or transporting the machine.

the lock and stop the engine.

If any controls should be touched

IMPORTANT: Do not try to slew when the

accidentally when the safety lock lever

slew lock lever is set to the locked

is lowered, the machine will move

position.

suddenly, and cause serious injury or

death.

¡ Note that the dozer blade, boom swing

and auxiliary hydraulics controls are

not locked, even when the safety lock

lever is set to the lock position. Do not

touch these controls accidentally.

¡ Be careful not to touch the operating

levers when raising and lowering the

B5B010

safety lock lever.

Use this lever to lock the upperstructure so

that it cannot slew.

¡ Turn the lever forward to unlock.

¡When setting to the locked position,

always line up the upperstructure and

undercarriage and turn the lever backward

to lock.

¡ If the upperstructure and undercarriage

are not lined up, slewing will not be locked

B5B022

even if the lever is set to the locked

This device is for locking the hoe attachment,

position.

slewing and traveling.

When the safty lock lever is raised, the

operating and travel levers are locked.

43

CONTROLS

Levers and Pedals

Throttle Lever

Blade Lever

A

B

A

B

B5B011

B5B013

This controls the engine speed.

Use this lever to operate the dozer blade and

(A)

Low idling

switch the crawler width.

(B)

Maximum speed

(A)

Blade up/narrow crawler width

(B)

Blade down/wide crawler width

To change the crawler width, press the

selector lever in before operating it.

Refer to page 60 “Changing the Crawler Width”.

Operating Levers

WARNING

Travel Levers

¡ Be careful to check which pattern of

lever control arrangement you are

WARNING

operating with before beginning

operations.

Before operating the travel levers, check

¡ The explanations in this manual are for

to make sure that the dozer blade is to

the ISO pattern.

the front of the operator’s seat. BE

AWARE that when the dozer blade is to

the rear of the operator’s seat, the travel

levers operate in the opposite direction

to when the dozer blade is in the front.

B5B012

Use these levers to operate the boom, arm,

bucket and upperstructure (slew).

Refer to pages 56, 57 “Lever Pattern”.

B5B015

Refer to page 64 “Operating the Working

Equipment”.

Use these levers to move forward and

backward and to change directions.

Refer to page 61 “Operating the Travel Levers”.

44

CONTROLS

Levers and Pedals

Travel Speed Lever

Boom Swing Pedal

CAUTION

B

It is not possible to change directions

when traveling in 2nd (high) speed. To

A

change directions, first release the travel

speed lever to uncouple the travel levers.

B5B017

2

Use this pedal to operate the boom swing.

(A)

Boom swing right

1

(B)

Boom swing left

B5B0161

The travel speed lever switches the machine

Auxiliary Pedal

travel speed.

(1)

1st (low) speed

B

(2)

2nd (high) speed

In 2nd speed, the left and right travel levers

are coupled so only straight travel is possible.

A

B5B018

This pedal controls the flow of the oil in the

auxiliary hydraulic circuit.

(A)

Hydraulic oil flows to left auxiliary

hose

(B)

Hydraulic oil flows to right auxiliary

hose

45

CONTROLS

Levers and Pedals

Pedal Stopper

Selector Lever

1

B

S

A

B5B019

B5B0231

This is a device for fixing the auxiliary pedal

Use this lever when changing the crawler

to the operating status so that when using

width. This lever switches the operation of

with a hand breaker, etc., connected to the

the blade and span cylinder.

auxiliary ports, the hand breaker can be

1. To change the crawler width, move this

turned on and off using it’s own switch.

lever to the right (S).

1. Lift the pedal and press on the heel side

2. Move the blade lever and change the

(A).

crawler width.

2. Put the bolt (1) through the hole in the

pedal to lock it.

46

CONTROLS

Accessories

Connecting the Hydraulic Circuits

Auxiliary Hydraulic Lines

To connect the attachment hydraulic lines,

use the following procedures:

WARNING

1. Move the auxiliary pedal several times to

relieve pressure on the lines.

Oil may spurt out if caps or filters are

2. Make sure the stop valves are closed.

removed or pipes disconnected before

3. Remove the plugs.

releasing the pressure in the hydraulic

4. Connect the attachment hydraulic lines to

system.

ports (a) and (b).

¡When removing plugs or

5. Open the stop valves.

disconnecting hoses, release the

6. When connecting is complete, purge air

internal pressure before removing.

from the hydraulic lines.

a. Start and run the engine at low idle with

These lines deliver the hydraulic oil

no load for 10 minutes.

necessary for operating a hydraulic breaker,

b. With the engine running at low idle

crusher or other attachments.

operate the auxiliary pedal repeatedly

(approx. 10 times) to purge air from the

B

hydraulic lines.

c. Stop the engine and wait for more than

5 minutes until bubbles escape from the

A

hydraulic oil in the tank.

IMPORTANT: Follow the procedures for

purging air as instructed by the

B5D023

attachment manufacturer if specified to

do so.

S

O

7. Check for leaks.

Before dismantling the attachment, move the

auxiliary pedal several times to relieve

b

pressure on the lines and be sure to close

a

the stop valves.

B5C004

Stop valve

S : Closed O : Open

47

CONTROLS

Accessories

External Power Socket (for EU)

WARNING

Only use applicable electric products with

this socket.

1

B5C007

Use this socket as an external power supply.

To use, raise the cap (1).

48

CONTROLS

Accessories

The operating pattern of the left and right operating levers can be changed.

WARNING

Be careful to check which pattern of lever control arrangement you are operating with

before beginning operations.

A

ISO

G

JCB

C4L004

Switching the Lever Pattern

3. Switch rod (2) to plate (3).

4. Switch rod (4) to plate (5).

5. Set the boots and cover back as they

were.

6. Check the lever pattern.

(A) : ISO pattern

(G) : JCB pattern

1. Remove the lower mount section of the

boots and turn them upwards.

2. Loosen the bolts and remove the cover.

49

OPERATION

Before Starting Operation

Mounting and Dismounting

Walk-Around Inspection

Perform the walk-around inspections before

WARNING

starting the engine the first time that day.

¡ Do not jump on or off the machine.

Perform the inspections as described under

Never attempt to mount or dismount a

“Maintenance - Walk-Around Inspection”

moving machine.

(pages 95 and 96).

¡ When mounting and dismounting the

cab, first open the door fully to the

locked position and check that it does

not move. (For machines with cabs)

Daily Inspection

Perform the daily inspections once a day

before starting the engine the first time that

day.

B5D0011

Perform the inspections as described under

“Maintenance - Daily Inspection” (pages 97

¡ Always face the access system and

to 101).

maintain a three point contact with the

recommended handrails and steps

while getting on and off the machine.

Keep steps and platform clean.

¡Never use the safety lock lever or

control levers as hand holds.

52

OPERATION

Starting and Stopping the Engine

HOURS

Before Starting the Engine

1/10

1. Adjust the seat for a comfortable operating

position.

1

2

2. Fasten your seatbelt.

°C

B5D0032

¡ The battery charge warning lamp (1)

and engine oil pressure warning lamp

(2) light, and the meters also start

functioning.

B5B003

If a lamp does not light, the bulb may be burnt

out or a wire may be damaged. Contact a

3. Check that the safety lock lever is in the

Takeuchi sales or service outlet for repairs.

locked position.

B5D002

4. Check that

all the levers and pedals are

in the neutral position.

PREHEAT

^OFF ON

START

E4D002

5. Insert the key into the starter switch, turn

it to the ON position, then perform the

following inspection:

53

OPERATION

Starting and Stopping the Engine

Starting in Cold Weather

Starting the Engine

WARNING

¡ Clear the area of all persons.

¡ Sound horn to alert everyone around

the machine.

IMPORTANT: Do not run the starter motor

B5D004

for more than 15 consecutive seconds. If

1. Pull the throttle lever to the middle speed

the engine fails to start, wait for 30

position.

seconds to protect the battery, and then

try again to start the engine.

OFF

Normal Starting

PREHEAT

ON

START

E4D060

2. Turn the key to the PREHEAT position and

B5D004

hold it there about 3 seconds.

3. Turn the key to the START position and

1. Pull the throttle lever to the middle position.

start the engine.

4. Once the engine starts, release the key.

OFF

The key automatically returns to the ON

PREHEAT

ON

position.

5. Return the throttle lever.

START

6. Check that the warning lamps are off.

7. Warm up the engine.

Refer to page 55 “Warming Up the

Engine”.

E4D005

2. Turn the key to the START position and

start the engine.

3. Once the engine starts, release the key.

The key automatically returns to the ON

position.

4. Return the throttle lever.

5. Check that the warning lamps are off.

6. Warm up the engine.

Refer to page 55 “Warming Up the Engine”.

54

OPERATION

Starting and Stopping the Engine

Warming Up the Engine

Stopping the Engine

IMPORTANT: Avoid racing the engine

IMPORTANT: Do not stop the engine

until it is warmed up.

suddenly when operating with heavy

Do not warm up the engine for long

loads or at maximum speed. Doing so

periods of time (20 minutes or more).

may cause the engine to overheat or

seize. Never bring the engine to a sudden

stop except in the case of a true

emergency.

B5D006

1. Return the throttle lever, then idle the

engine and run it for about 5 minutes with

B5D007

no load.

1. Idle the engine for about 5 minutes to

gradually let it cool.

OFF

PREHEAT

ON

START

E4D007

2. Turn the key to the OFF position to stop

the engine.

55

OPERATION

Machine Operation

Lever Pattern (ISO Pattern)

WARNING

¡ Be careful to check which pattern of lever control arrangement you are operating

with before beginning operations.

¡ The explanations in this manual are for the ISO pattern.

〈ISO〉

B5D008

Left Crawler Forward

Right Crawler Forward

Left Crawler Reverse

Right Crawler Reverse

Arm Out

Boom Lower

Arm In

Boom Raise

Upperstructure Slew Left

Bucket Load

Upperstructure Slew Right

Bucket Dump

Boom Swing Left

Dozer Blade Lower

Boom Swing Right

Dozer Blade Raise

56

OPERATION

Machine Operation

Lever Pattern (JCB Pattern)

WARNING

¡ Be careful to check which pattern of lever control arrangement you are operating

with before beginning operations.

¡ The explanations in this manual are for the ISO pattern.

〈JCB〉

B5D016

Left Crawler Forward

Right Crawler Forward

Left Crawler Reverse

Right Crawler Reverse

Boom Lower

Arm Out

Boom Raise

Arm In

Upperstructure Slew Left

Bucket Load

Upperstructure Slew Right

Bucket Dump

Boom Swing Left

Dozer Blade Lower

Boom Swing Right

Dozer Blade Raise

57

OPERATION

Machine Operation

Warming Up the Machine

(Hydraulic Oil)

WARNING

Operating the working equipment without

warming up the machine (hydraulic oil)

is dangerous, as response will be slow

B5D009

and the equipment may move in

2. Fully lower the safety lock lever to

unexpected ways. Be sure to sufficiently

disengage the lock and lift the bucket from

warm up the machine.

the ground.

IMPORTANT: Do not operate the levers

suddenly when the hydraulic oil

temperature is below 20°C (68°F). The

proper hydraulic oil temperature during

operation is 50 to 80°C (122 to 176°F), but

if operations must be performed at lower

temperatures, heat up the hydraulic oil

to at least 20°C (68°F).

G4D005

Normal Warm-up

3. Extend and retract each of the cylinders

several times with no load.

B5D004

1. Pull the throttle lever to the middle position,

then run the engine at medium speed for

B5B024

about 5 minutes with no load.

4. Set the slew lock lever to the released

position before starting to slew.

58

OPERATION

Machine Operation

Inspection After Warm-up

After warming up the engine and hydraulic

oil, perform the checks and inspections

described below, and repair if there is a

problem.

HOURS

1/10

5. Slew slowly left and right several times.

°C

B5D0101

1. Check that the warning lamps and meters

are as follows:

¡ Are all the warning lamps off?

¡Is the water temperature gauge’s

needle within the green range?

6. Travel slowly forward and backward

2. Check that there are no irregularities in

several times.

the exhaust color, sound and vibrations.

Warming Up in Cold Weather

1. Perform the normal warm-up procedure.

Refer to the previous page.

B5B003

3. Raise the safety lock lever to engage the

lock and check that the operating and

E4D011

travel levers are locked.

2. Set the bucket cylinder at the stroke end

and keep it there.

Do not do this for more than 30 seconds.

3. Repeat step 2 until the bucket operating

speed is normal.

59

OPERATION

Machine Operation

Changing the Crawler Width

N

WARNING

Always operate the machine with the

crawler width at the maximum to increase

machine stability. The smaller the crawler

width, the greater the possibility the

B5D011

machine can tip over. If it is absolutely

3. Push the blade lever forward to extend

necessary to operate the machine with a

crawler width.

narrow crawler width, do so with great

¡ a900mm (35.4 in.)

care.

If necessary, also replace the blade’s

plates and use the dozer blade with the

Perform these operations on a flat, solid

extended width.

surface with no obstacles in the way.

N

B5D012

C4D016

4. Pull the blade lever backward to retract

1. Lift the machine body using the hoe

crawler width.

attachment and dozer blade.

¡ a680mm (26.8 in.)

IMPORTANT: Always lift the body before

changing the crawler width. Failure to do

so can result in damage to the track

frames and spanner cylinder.

B S

B5B014

2. Move the selector lever to the right (S).

60

OPERATION

Machine Operation

Changing the Dozer blade width

1

2

¡ Before operating the travel levers, check

B5D013

to make sure that the dozer blade is to

the front of the operator’s seat. BE

1. Pull out the lock pins (1).

AWARE that when the dozer blade is to

the rear of the operator’s seat, the travel

levers operate in the opposite direction

to when the dozer blade is in the front.

¡Remove any obstacles in the

machine’s path.

2

1

Traveling Forward and Backward

B5D014

2. Turn the plate (2).

3. Secure the plate (2) with the lock pins (1).

B5D005

1. Pull the throttle lever and increase the

Operating the Travel Levers

engine speed.

WARNING

¡Never allow anyone to enter the

slewing (swing) radius and machine

path.

¡Signal your intention to move by

sounding the horn.

¡ There are blind spots to the rear of the

B5D009

machine.

If necessary, slew the cab around

2. Lower the safety lock lever to the released

before backing up to check that the

position.

area is safe and clear.

61

OPERATION

Machine Operation

Traveling in 2nd (High) Speed

CAUTION

It is not possible to change directions

when traveling in 2nd (high) speed. To

change directions, first release the travel

30~40cm

speed lever to uncouple the travel levers.

E4D014

3. Fold the hoe attachment and lower it to

30 to 40 cm(12 to 16 in.) above the ground.

2

4. Lift the dozer blade.

5. Operate the left and right travel levers as

1

described below.

B5D0241

Neutral

Neutral

1. Tilt the travel speed lever fully to the left

and grasp the right travel lever with the

same hand.

2. Tilt the levers forward or backward to travel

E4D015

straight in 2nd speed.

3. Release the travel speed lever to return

When the dozer blade is in front of the

to 1st (low) speed.

operator’s seat:

a To move forward:

Tilt the levers forward.

Pivot Turn

e To move backward:

Tilt the levers backward.

Neutral

Neutral

Neutral

E4D017

Turning to the left when stopped:

E4D016

a To turn forward to the left:

When the dozer blade is behind the

Tilt the right lever forward.

operator’s seat:

e To turn backward to the left:

a To move forward:

Tilt the right lever backward.

Tilt the levers backward.

To turn to the right, operate the left lever in

e To move backward:

the same way.

Tilt the levers forward.

62

OPERATION

Machine Operation

Stopping Travel

WARNING

Neutral

¡ Park the machine on firm, level ground

and apply the parking device. If you

must park on a slope or incline, block

the machine securely to prevent

E4D018

movement.

Turning to the left while traveling:

¡If any controls should be touched

a To turn left while traveling forward:

accidentally when the safety lock lever

Set the left lever to neutral.

is lowered, the machine will move

e To turn left while traveling backward:

suddenly, and cause serious injury or

Set the left lever to neutral.

death.

To turn to the right while traveling, operate

¡ Note that the dozer blade, boom swing

the right lever in the same way.

and auxiliary hydraulics controls are

not locked, even when the safety lock

lever is set to the lock position. Do not

Spin Turn

touch these controls accidentally.

CAUTION

Neutral

Never bring the machine to a sudden stop

except in the case of a true emergency.

Stop as gently as possible.

E4D019

a To spin left:

Neutral

Neutral

Tilt the left lever backward and the right

lever forward.

e To spin right:

Tilt the right lever backward and the left

lever forward.

E4D020

1. Slowly set the left and right travel levers

to the neutral position. The machine stops.

63

OPERATION

Machine Operation

Slewing

Operating the Working

Equipment

WARNING

WARNING

Check the surrounding area for safety

before slewing.

¡ Be careful to check which pattern of

lever control arrangement you are

operating with before beginning

operations.

¡ The explanations in this manual are for

the ISO pattern.

B5D017

a To slew left:

Tilt the left operating lever to the left.

e To slew right:

Tilt the left operating lever to the right.

B5D002

Operating the Boom

Use the right operating lever to operate the

boom and bucket.

Use the left operating lever to operate the

arm and for slewing.

Return the operating levers to the neutral

position to stop the hoe attachments.

1. Set the safety lock lever to the released

position.

B5D018

2. Set the slew lock lever to the released

a To lower the boom:

position.

Tilt the right operating lever forward.

3. Set the pedals to the level position.

e To raise the boom:

Tilt the right operating lever backward.

64

OPERATION

Machine Operation

Operating the Arm

Operating the Boom Swing

B5D019

B5D015

a To contract the arm:

a To swing left:

Tilt the left operating lever backward.

Press the toe side of the pedal.

e To extend the arm:

e To swing right:

Tilt the left operating lever forward.

Press the heel side of the pedal.

Operating the Bucket

Operating the Dozer Blade

B5D020

B5D021

a To dig:

a To lower the dozer blade:

Tilt the right operating lever to the left.

Tilt the lever forward.

e To dump:

e To raise the dozer blade:

Tilt the right operating lever to the right.

Tilt the lever backward.

65

OPERATION

Machine Operation

Operating the Auxiliary

Hydraulics

Use this to operate a breaker, crusher or

other attachment.

B

A

B5D023

S

O

b

a

B5C004

When the pedal is pressed, hydraulic oil is

delivered to the auxiliary hose’s ports (a) and

(b).

a To deliver hydraulic oil to port (a):

Press the heel side (A) of the pedal.

e To deliver hydraulic oil to port (b):

Press the toe side (B) of the pedal.

Refer to page 47 “Auxiliary Hydraulic Lines”.

66

OPERATION

Operating Procedures

Be Gentle on the Hydraulic Cylinders

Prohibited Operations

WARNING

¡ Do not operate on base rock (hard or

soft).

¡ Do not slew (swing) while traveling. If

you must operate the hoe attachment

while traveling, operate at speeds slow

E4D031

enough so you have complete control

Do not extend the hydraulic cylinders to the

at all times.

stroke ends. Operate them with leeway.

Do not perform breaking or leveling

operations using slew force

E4D029

Do not support the machine body with the

hoe attachment as it is lowering with the arm

Do not break down walls or level ground

cylinder fully extended. Doing so

using slew force. Also, do not dig the bucket

concentrates the load on the arm cylinder

teeth into the ground during slewing. Doing

and could damage the arm cylinder.

so will damage the hoe attachment.

Do not Drive Piles with the Bucket or Dig

Do not Dig while Traveling

with it Using Shock Force

E4D030

E4D032

Do not dig the bucket into the ground and

Doing so will shorten the service life of the

use the traveling force to dig.

hoe attachment. Use hydraulic force to dig.

67

OPERATION

Operating Procedures

Do not Perform Operations Using the

Caution on Exposing the Dozer Blade to

Machine’s Dropping Force

Shocks

E4D040

Hitting the dozer blade against rocks, etc.,

could damage the dozer blade or the blade

cylinder.

Caution on Folding the Hoe Attachment

E4D033

Putting excessive strain on the machine will

shorten its service life. Use the hydraulic

force of the cylinders and always dig with

shallow, long strokes.

E4D041

Digging Base Rock

Be careful not to hit the bucket or dozer blade

when folding the hoe attachment.

Do not use the Dozer Blade as an Outrigger

E4D034

For hard base rock, break the rock up into

small pieces with a breaker, etc., before

digging. This prevents damage to the

N0D009

machine and is thus more economical in the

end.

68

OPERATION

Operating Procedures

Pay Attention to the Dozer Blade when

Cautions on Operating

Digging

Cautions on Traveling

E4D0431

When digging deeply with the dozer blade

E4A040

positioned at the front, be careful that the

Traveling over obstacles (rocks, stumps, etc.)

boom cylinder and bucket do not hit the dozer

may subject the body to strong shocks and

blade.

result in damage. Avoid traveling over

Operate with the dozer blade at the rear

obstacles whenever possible. If you must do

whenever possible.

so, keep the hoe attachment near the ground,

travel at low speed, and go over the obstacle

Caution on Digging Down with the Dozer

at the center of the crawler.

Blade

Cautions on Traveling in 2nd (High)

Speed

E4D044

This dozer blade is designed for simple earth

pushing. Do not dig down deeply with the

E4D037

dozer blade. Doing so could damage the

On uneven ground, travel at low speed and

dozer blade and lower body.

avoid accelerating, stopping or changing

directions abruptly.

Also, when traveling in 2nd speed, do so with

the dozer blade at the front.

69

OPERATION

Operating Procedures

Cautions on Use in Water

Cautions on Traveling on Slopes

WARNING

¡ Never exceed the machine’s stability

capabilities (maximum gradeability -

25°, lateral tipping angle - 10°). Also

note that when actual working area

E4D038

conditions are poor the machine’s

stability capabilities may be lower.

If you leave water at a sharp angle, the rear

¡ When traveling on slopes or grades,

of the machine may be submerged, exposing

lower the bucket to a height of 20 to 30

the radiator fan to water and damaging them.

cm (8 to 12 in.) off the ground. In

Do not let the rear of the machine get

emergencies, lower the bucket to the

submerged.

ground and stop the machine.

¡ When traveling on slopes or grades,

move slowly in first gear (low speed).

1

¡ Do not travel down slopes in reverse.

C4D014

¡ Allowable water depth

In water, only use the machine up to a

depth at which the water comes up to the

middle of the shoe slide (1).

¡Do not change directions or cross

¡ When greasing places used under water

slopes sideways. First return to a flat

for long periods of time, apply enough

surface then redirect the machine.

grease so that the old grease is expelled.

¡ On grass, dead leaves, wet metal or

¡ Never submerge the slew bearing or main

frozen surfaces, the machine may slide

body in water or sand. If the slew bearing

sideways even on very gentle slopes.

or main body should get submerged,

Make sure the machine never faces

contact a Takeuchi sales or service outlet

sideways with respect to the slope.

for inspection.

70

OPERATION

Operating Procedures

Traveling Posture

Braking when traveling down slopes

Traveling up slopes

Braking

E4D045E

When traveling down slopes, the brakes are

When traveling up slopes at an angle of 15°

applied automatically when the travel levers

or greater, travel in the posture shown in the

are returned to the neutral position.

diagram above.

If the crawlers slip

Traveling down slopes

Climbing

E4D046

If the crawlers slip while traveling up a slope,

When traveling down slopes at an angle of

use the pulling force of the arm to climb the

15° or greater, lower the engine speed and

slope.

travel in the posture shown in the diagram

above.

If the engine stops

Descending

E4D047E

If the engine stops when traveling down a

slope, set the travel levers to the neutral

position, stop the machine, then start the

engine.

71

OPERATION

Operating Procedures

Do not open the door while traveling on

Getting Out of Mud

slopes

If the machine gets stuck in mud, use the

procedure below to get it out.

If one crawler is stuck

E4D048

Opening the door while traveling on slopes

is dangerous, as the force required to open

and close the door changes abruptly. Always

keep the door closed when traveling on

slopes.

1. Slew the bucket to the side which is stuck.

2. Set the arm and boom to an angle of 90

to 110°.

3. Press the bottom of the bucket (not the

teeth) against the ground.

4. Place a plank, etc., under the lifted crawler.

5. Lift the bucket and slowly move out of the

mud.

If both crawlers are stuck

1. Perform steps 1 to 4 above for both

crawlers.

2. Dig the bucket into the ground in front of

the machine.

3. Pull with the arm and travel forward

simultaneously to slowly move out of the

mud.

72

OPERATION

Operating Procedures

Digging Side Ditches

Operations Possible with this

Machine

Excavating

80 ~120

B5D022

Use the offset function to dig side ditches as

shown in the diagram.

E4D0501

1. Set the dozer blade on the side opposite

Loading

the side you want to dig on.

2. Use the arm and bucket and dig with

shallow, long strokes. The digging force

is strongest when the boom and arm angle

is 80 to 120°. Use this angle for effective

digging.

Digging Ditches

When loading dirt in a truck, starting from

the back of the truck’s bed makes for easier

loading and increases the amount of dirt that

can be loaded.

Also, use a small slewing angle for greater

efficiency.

E4D051

Mount a bucket suited for digging ditches and

set the crawlers parallel to the ditch to be

dug for greater efficiency.

When digging wide ditches, dig the sides first,

the center later.

73

OPERATION

Operating Procedures

Leveling

E4D053

1. Bring the hoe attachment close to the

body.

2. Gradually remove the dirt from the side of

the mound.

3. Once the mound is low, remove the dirt

from the top. If the load on the body is too

heavy, adjust by raising or lowering the

dozer blade.

74

OPERATION

Parking the Machine

Parking

Inspection and Checks After

Stopping the Engine

WARNING

1. Check for oil and water leakage and

inspect the working equipment, covers

and lower body. If any irregularities are

found, repair.

2. Fill the fuel tank.

Refer to page 99 “Checking the Fuel

Level”.

3. Remove any paper scraps or dirt from the

engine room.

E3A4901

4. Remove any mud from the lower body.

¡ Park the machine on firm, level ground

Locking

and apply the parking device.

Be sure to lock the following places:

¡Before leaving the operator’s seat,

raise the safety lock lever to engage

the lock and stop the engine. If any

controls should be touched

accidentally when the safety lock lever

is lowered, the machine will move

suddenly, and cause serious injury or

death.

1. Set the left and right travel levers to the

¡ Engine hood

neutral position.

2. Return the throttle lever and idle the

engine at low speed.

3. Set the slew lock lever to the locked

position.

4. Lower the bucket and dozer blade to the

ground.

5. Raise the safety lock lever to engage the

lock.

6. Stop the engine and remove the key.

Refer to page 55 “Stopping the Engine”.

75

OPERATION

Handling Rubber Crawlers

Rubber crawlers have an inherent weakness

due to their use of rubber. Be sure to heed

the prohibitions and cautions below so as to

prevent damage to the crawlers and crawler

slippage.

Prohibited Actions

E4D057

Do not travel or operate the machine in the

¡ Do not let fuel, oil, salt or chemical solvents

following places:

get on the crawlers. These substances

may corrode the couplings of the crawlers’

metal cores, resulting in rust or peeling. If

these substances should get on the

crawlers, wipe them off immediately using

water.

E4D056

¡ Traveling or slewing on broken stone,

jagged base rock, iron rods, iron scraps

or the edges of iron sheets may damage

or cut the crawlers.

E4D058

¡ Traveling on roads directly after asphalting

or on hot surfaces such as over fires or

on iron sheets under strong sunlight may

result in irregular wear or damage of the

lugs.

¡ Do not move earth in places where the

rubber crawlers may slip. Doing so may

E4D055

speed up lug wear.

¡ Traveling on riverbeds or places with many

soft rocks may cause the crawlers to slip

off or be damaged due to rocks getting

stuck in them.

¡ Do not use on the seashore. The salt may

corrode the metal cores.

77

OPERATION

Handling Rubber Crawlers

¡ When storing the rubber crawlers for long

Cautions

periods of time (3 months or more), do so

indoors in a place not exposed to direct

Heed the following cautions when operating

sunlight or rain.

the machine:

L4D013

¡ Rubber crawler belts are not as stable as

¡ Do not turn the undercarriage with the front

steel crawler belts since the entire lug is

of the machine body lifted using the hoe

rubber. Be very careful when slewing and

attachment and the upperstructure left in

swinging sideways.

this posture. Doing so will twist the crawler

with the load concentrated on a single

point on the crawler belt, rapidly leading

Preventing the Rubber Crawlers from

to damage.

Slipping Off

¡Avoid changing course abruptly and

Heed the following in order to prevent the

spinning on concrete surfaces whenever

rubber crawlers from slipping off:

possible.

¡ Always keep the crawlers at the proper

Doing so may wear or damage the rubber

tension.

crawlers.

¡ Avoid drops that may expose the rubber

crawlers to strong shocks.

¡Salt, potassium chloride, ammonium

sulfate, potassium sulfate, and triple

superphosphate of lime can damage the

crawler belts. If any of these substances

should get on the crawler belts, wash them

off thoroughly with water.

¡ Do not let the sides of the rubber crawlers

rub against concrete or walls.

¡ When traveling up large cobblestone or

¡ Do not damage the rubber crawlers by

rock steps (20 cm (8 in.) or greater), climb

hitting the bucket against them.

up the step at a direct angle and do not

¡Be especially careful in the winter on

change course on top of the step.

snowy or frozen surfaces as the crawler

belts tend to slip.

¡ Use rubber crawler belts at temperatures

between -25°C to +55°C (-14°F to 131°F).

78

OPERATION

Handling Rubber Crawlers

¡ When climbing in reverse, do not change

course at the point where the slope starts.

¡ Do not change directions when the crawler

belts are slack as shown in the diagram.

¡ Avoid traveling with one crawler on a slope

or projecting object and the other crawler

on a flat surface (with the machine at a tilt

of 10° or greater). Travel with both crawlers

on flat surfaces.

79

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