Content .. 17 18 19 20 ..

LG936L Wheel Loader. Manual - part 19

Operation & Maintenance Manual──LG936L Wheel Loader

3. The loader must be maintained and lubricated periodically.

4. Drive the loader until the brake pressure reaches 0.4MPa after the engine starts.

5. Put some hot water or vapor in front of the engine for preheating it. Preheat the engine until

30~40

℃

before starting if the environmental temperature is lower than -5 .

℃

6. There is no need to stop the machine or step on the brake pedal in changing the forward

levers during driving. When changing the speed from low to high, release the accelerator a

little and operate the Gear Control Lever at the same time, and step on the accelerator; when

changing the speed from high to low; release the accelerator first and then change the

transmission slowly.

7. After the lift-arm and bucket are moving to the required position, release the control valve

lever to the middle position.

8. Change the forward or backward driving direction after stopping the loader.

9. Full load work is allowed until the water temperature of the engine is above 60 and the

℃

mobile temperature of the engine is above 50 . But the water temperature of

℃

the engine

should not be over 95 and the mobile temperature of

℃

the engine should not be over 120 ,

℃

otherwise stop the loader to cool it.

10. Never lift the bucket to the highest position to transport material. The lower hinge of the lift

arm should be 400 ～ 500mm above the ground to ensure stable driving during the

transporting process.

11. A diesel engine is used in the machine. The power of the diesel engine will go down as the

altitude, environmental temperature and relative temperature goes up. So please pay attention

to the environmental conditions and calculate the real power under the current environmental

condition according to the power correcting table in

Diesel Engine Usage and

Maintenance User Manual

3.2 Starting

3.2.1 Check before Starting

z Check the bottom and surrounding of the machine to see whether there are lost of bolts, dirt, oil,

coolant leak, or broken parts. Check the status of accessories and hydraulic parts.

z Check before Starting:

Check the fuel in the fuel tank. Refer to

3.6.2 Adding Fuel to Fuel Tank

in this chapter.

Check the hydraulic oil in hydraulic oil tank. Refer to

3.6.5 Adding Oil to Hydraulic

Oil Box

in this chapter.

Operation & Maintenance Manual──LG936L Wheel Loader

1) Check the engine oil in the engine oil pan. Refer to

3.6.1 Fuel Supplying of Engine

this chapter.

2) Open the water tank cover to check the water level in the water tank.

3) Check the brake oil in the oil bowl of the brake booster pump.

4) Check the seal ability of the oil pipe, water pipe, air pipe and other parts.

5) Check the seal ability of the hydraulic pipes and the surrounding pipes.

6) Check the wire connection of the storage battery.

7) Check the pressure of the tire to see whether it is normal. Please refer to

CHAPTER II

8.1 Performance

8) Check the control levers (or handles) to see whether they are sensitive and in the neutral

position.

9) Adjust the seat position to sit comfortably. Please refer to

1.2.10 Adjustment of Cab’s

Seat

in this chapter.

10) Check the safety belt (if assembled) and other safety equipment for good working order.

11) Start the full checking list the engine only after completing.

3.2.2 Engine Starting

z Make sure all the control levers are in the neutral position before starting; make sure the gear

control lever is in neutral position, and put the switch in its original position.

z Step on the accelerator slowly when starting to prevent breaking parts.

z Follow the correct starting steps to start the engine.

z Refer to

Diesel Engine Usage and Maintenance User Manual

for other operations of

diesel engines.

Steps of starting engine:

z Put the shifting control lever to the neutral position

z Turn the start key clockwise to the ON position. Connect the power switch and ring the horn.

z Turn the starting key to the ON position. Connect the power switch, and press the accelerator

slowly. Then turn to the START position. After releasing the starting key, it will go back to the

ON position automatically. The starting time is not more than 5~10 seconds, (the engine starting

effort not be more than 15 seconds).

z Try again if the machine does not start the first time. But the alternation time should be more than

1 minute. If the engine does not start after these tries, please check the machine and solve the

problem.

3.2.3 After Starting of Engine

z Lowers the speed of the engine, and examine the reason if engine oil pressure gauge is not in the

Operation & Maintenance Manual──LG936L Wheel Loader

normal position. After that, start again, otherwise there may be some problem.

z When the engine oil pressure does not reach the designated value, the high running speed of the

engine will induce a high temperature and the turbo charger may be broken.

z Use the equipment control levers to let the preheated hydraulic oil circle in hydraulic tank and

pipes, so that way the hydraulic parts can warm quickly.

z Keep the engine at an idle speed for several minutes after starting. Increase the speed to

1000~1200r/min gradually, and then enter the partial load running status. Pay attention to the

value of the gauge.

z Do not let the engine run at high speed or low speed more than 20 minutes in the idle status.

z If the engine has to run at idle status, the machine should be loaded from time to time or the

engine should run at the middle speed.

3.3 Running

3.3.1 Driving

Make sure there is no other person in, on or around the

machine or around to prevent accident. And keep the

machine under control.
z Raise the lift-arm. Keep the bucket backwards, and

keep the motor running.

z Put the gear control lever at forward I or backward I

position.

z Press the brake pedal; press the parking brake level

to release the brake status.

z Release brake pedal, and step on the accelerator

pedal slowly to drive the machine forward or
backward.

z It is safe to drive only when the brake pressure is

over the specific value of 0.45MPa.

Operation & Maintenance Manual──LG936L Wheel Loader

Never lift the bucket to the highest position while transporting material. The lower hinge of the
arm working equipment should be 400～500mm above the ground to ensure stable driving in the
transporting process.

△

NOTICE

z Never run at high speed if the machine goes on a slope or

uneven ground.

z Select the proper transmission gears when go down a slope

and never change the gears during that time.

z Never run over speed while driving on a slope, and use the

foot brake pedal to slow the speed (if the double brake
pedals are assembled, the left one should not be used).

3.3.2 Gearshift. Changing between Forward and Backward

z Press the accelerator properly when shifting gear to avoid sharp speed increase.

z It is best to change the running direction (from forward to backward or from backward to forward)

after stopping the machine to get the best driver comfort and prolonging the life of the engine.

z No need to stop and brake the machine to shift gears while running. Release the accelerator and

operate the transmission lever at the same time when changing the speed from low to high and

when changing the speed from high to low, release the accelerator first and then change the

transmission slowly.

3.3.3 Turning

z Turn the steering wheel to the desired direction. The machine will turn.

z The machine takes the articulated pin at the center. And the front and rear frames turn by rotating

its waist.

△

WARNING

z Never turn suddenly or turn on a slope at high speed.

z When driving straight, the machine can not turn if the engine

stops

Content .. 17 18 19 20 ..