Loader Bobcat 773. Manual - part 3

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773 BICS Loader

Service Manual

PREVENTIVE MAINTENANCE (Cont’d)

OPERATOR CAB

Description

1–8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Lowering The Operator Cab

1–10

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Raising The Operator Cab

1–9

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Emergency Exit

1–8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

PIVOT PINS

1–35

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

REMOTE START SWITCH

Procedure

1–37

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

SEAT BAR RESTRAINT SYSTEM (Advanced Hand Controls)

Description

1–13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Seat Bar Inspection

1–13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Seat Bar Maintenance

1–13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

SEAT BAR RESTRAINT SYSTEM (Foot Pedals)

Description

1–11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Seat Bar Inspection

1–11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Seat Bar Maintenance

1–11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

SEAT BAR RESTRAINT SYSTEM (Mechanical Hand Controls)

Description

1–12

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Seat Bar Inspection

1–12

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Seat Bar Maintenance

1–12

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

SERVICE SCHEDULE

Chart

1–3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

SPARK ARRESTOR MUFFLER

Cleaning Procedure

1–26

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

STOPPING THE BOBCAT LOADER

1–6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

TIRE MAINTENANCE

Tire Mounting

1–27

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Tire Rotation

1–27

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Wheel Nuts

1–27

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

TOWING THE LOADER

Procedure

1–5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

TRANSPORTING THE LOADER

Procedure

1–5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Page

Number

Revised Jan. 99

Check wheel nut torque every 8 hours for the first 24 hours.
Replace filter element after the first 50 hours and when the transmission warning light comes ON.
Or every 12 months.

*

Inspect the new belt after first 50 hours.
First oil and filter change must occur at 50 hours; 250 hours thereafter.

Engine Oil

Check the oil level and add oil as needed.

Engine Air Filter

Check  condition  indicator  or  display  panel.  Service  only  when

  and Air System

required. Check for leaks and damaged components.

Engine Cooling System

Clean debris from oil cooler, radiator and grill. Check coolant level
in recovery tank (engine cold). Add coolant as needed.

Tires

Check for damaged tires and correct air pressure.

Seat Belt, Seat Bar, Foot 

Check the condition of seat belt. Check the seat bar, and foot pedal

  Pedal or Hand Control

interlocks or hand control interlocks. Clean dirt and debris from

  Interlocks

moving parts.

Safety Signs and Safety

Check for damaged signs (decals) and safety tread. Replace any

  Tread

signs or safety treads that are damaged or worn.

Indicators & Lights (Opt.)

Check for correct operation of all indicators & lights.

Operator Cab

Check  the fastening bolts, washers & nuts. Check the condition of

 cab.

Lift Arms, Cyl., Bob–Tach

Lubricate with multi–purpose lithium based grease.

  Pivot Pins and Wedges
Fuel Filter

Remove the trapped water.

Bobcat Interlock Control

Check  BICS

TM

 functions. Clean dirt, debris or objects from under

  System (BICS

TM

)

and behind seat and around brake pedal as required.

Hydraulic Fluid, Hoses and

Check  fluid  level  and  add  as  needed.  Check  for  damage  and

  Tubelines

leaks. Repair or replace as needed.

Final Drive Trans.

(Chaincase)

Check oil level.

Foot Pedals, Hand Controls,

Check for correct operation. Repair or adjust as needed.

  and Steering Levers
Wheel Nuts

Check for loose wheel nuts and tighten to 105–115 ft.–lbs.
(142–156 Nm) torque.

Parking Brake

Check operation.

Spark Arrestor Muffler

Clean the spark chamber.

Battery

Check cables, connections and electrolyte level. Add distilled water
as needed

Steering Shaft

Grease two fittings.

Engine/Hydros. Drive Belt

Check for wear or damage. Adjust as needed.

Fan Drive Gearbox

Check gear lube level. Add as needed.

Alternator Belt

Check belt tension and adjust as needed.

Engine Oil and Filter

Replace oil and filter. Use CD or better grade oil and Melroe filter.

Fuel Filter

Replace the filter element.

Hydraulic Reservoir 

Replace the reservoir breather cap.

  Breather Cap
Hydraulic Reservoir

Replace the fluid.

Final Drive Trans

.

(Chaincase)

Replace the fluid.

Hydraulic/Hydrostatic Filter

Replace the filter element.

Case Drain Filters

Replace the filters.

Bobcat Interlock Control

Check lift arm bypass control

  System (BICS

TM

)

W–2003–0199

ITEM

SERVICE REQUIRED

8–10

100

500 1000

250

*

SERVICE SCHEDULE
Maintenance work must be done at regular intervals. Failure to do so will result in excessive wear and early failures. The
service schedule is a guide for correct maintenance of the Bobcat loader.

50

Revised June 01

Instructions are necessary before operating or servicing machine.
Read and understand the Operation & Maintenance Manual,
Handbook and signs (decals) on machine. Follow warnings and
instructions in the manuals when making repairs, adjustments or
servicing. Check for correct function after adjustments, repairs or
service. Untrained operators and failure to follow instructions can
cause injury or death.

773 BICS Loader

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Service Manual

LIFTING AND BLOCKING THE LOADER

Procedure

Always park the loader on a level surface.

Put jackstands under the front axles and rear
corners of the frame before running the engine
for service. Failure to use jackstands can allow
the machine to fall or move and cause injury or
death.

W–2017–0286

Put the floor jack under the rear of the loader [B].

Lift the rear of the loader and install jackstands [B].

Put the floor jack under the front the loader [C].

Lift the front of the loader and put jackstands under the
axle tubes [C].

NOTE: Make sure the jackstands do not touch the

tires.

Revised June 01

Instructions are necessary before operating or
servicing machine. Read and understand the
Operation & Maintenance Manual, Handbook
and signs (decals) on machine. Follow
warnings and instructions in the manuals when
making repairs, adjustments or servicing.
Check for correct function after adjustments,
repairs or service. Untrained operators and
failure to follow instructions can cause injury
or death [A].

W–2003–0199

B

P–03869

C

P–03868

A

B–07023

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773 BICS Loader

Service Manual

TRANSPORTING THE BOBCAT LOADER

A loader with an empty bucket or no attachment must be
loaded backward onto the transport vehicle [A].

Be sure the transport and towing vehicles are of adequate
size and capacity (See SPECIFICATIONS Page 9–1, for
weight of loader.).

The rear of the trailer must be blocked or supported [A]
when loading or unloading the loader to prevent the front
end of the trailer from raising up.

Use the following procedure to fasten the Bobcat loader
to the transport vehicle to prevent the loader from moving
during sudden stops or when going up or down slopes [B].

•

Lower the bucket or attachment to the floor.

•

Stop the engine.

•

Engage the parking brake.

•

Install  chains  at  the  front  and rear loader tie down
positions (Inset) [B].

•

Fasten each end of the chain to the transport vehicle.

TOWING THE LOADER

To prevent damage to the loaders hydrostatic system, the
loader must be towed only a short distance at slow speed.
(Example: Moving the loader onto a transport vehicle).

The towing chain (or cable) must be rated at 1 & 1/2 times
the weight of the loader. (See SPECIFICATIONS Page
9–1.)

•

Turn  the  key  switch  to  ON  and press the traction
lock override button.

•

Tow  the  Bobcat at 2 MPH (3,2 km/hr) or less for not
more than 25 feet (7,6 meters).

If the electrical system is not functioning part of the brake
system must be disassembled to move the loader. (See
TRACTION LOCK Removal and Installation procedure
Page 8–1.)

Adequately designed ramps of sufficient
strength are needed to support the weight of
the machine when loading onto a transport
vehicle. Wood ramps can break and cause
personal injury.

W–2058–0494

Revised Jan. 99

B

P–05077

P–10638

6707867

P–10646

A

P–10643

SUPPORT

773 BICS Loader

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Service Manual