Instruction Manual

Caterpillar: Non-Confidential
Replace the Return Filter
Element of Hydraulic Tank
1. Raise the boom and at the same time
put the bucket in the rack back position.
Use the support against the boom to
prevent the work tool falling. Position the
work tool control lever in the neutral
position. Apply parking brake and stop the
engine.
2. Unscrew the mounting bolts of filter
cover on the side of tank and remove the
cover. The cover might come off because
of the spring. When taking off the bolts, the
cover should be pressed down.
3. Take off the spring, then remove filter
element.
4. Mount the new filter element, spring
and cover.
5. When installing the cover bolts, press
the cover and tighten the bolts evenly.
6. Check the oil level and add the oil if
necessary.
7. Check the filter cover for leaks.
Tires
It is necessary for to use special equipment
and special techniques to maintain,
remove, repair and install the tires and rims.
So ask the tire repair shop or people with
special training to repair and follow all the
related safety regulations. It is
recommended to fill tire with N
2
. If the tire
has original air, it is suggested that
nitrogen is used to adjust the pressure.
The nitrogen can be mixed with air.
Inflating tires with nitrogen gas can prevent
the tires from exploding because of N
2
’s
inflammability. The nitrogen is helpful to
preventing oxidation, rubber aging and rim
parts corrosion. Check and adjust the tire
inflation pressure after the tire cools down.
The tire pressure is the same for both
nitrogen and air filled tires. Caterpillar
(Qingzhou) Ltd. suggests choosing the tire
inflation pressure according to application:
Tire Spec.：17.5-25
Tire Inflation Pressure (MPa)
Front Wheel: 0.343
Rear Wheel: 0.294
Attention: If the machine travels for a long
distance and at high speed, park the
machine for 30 minutes every 45 km in
order for the tire to cool down.
Bucket Limitation Device
The machine has a bucket automatic
leveling function. Operate the bucket
automatic leveling function reasonably to
increase the production effectively.
Adjust the Bucket’s
Automatic Leveling Device
1. Park the machine on a flat surface. Put
the transmission control knob in the neutral
position. Operate the control knob of
working valve to make the bucket level to
the ground. Pull the parking brake lever
and stop the engine. Install the lock pin to
the frame.
2. Loosen the arrow bolt. Move the arrow
to the middle of the fitting body of tilt
cylinder rod end. Tighten the arrow bolt.
3. Remove the fixed lock pin from the
frame after finishing. Start the engine and
check that adjustment is suitable.
Parking Brake
The parking brake should be often
checked to guarantee parking safety and
the braking performance of emergency
braking.
1. Adjust the tire pressure to the
regulated value. The bucket is leveled at
about 300mm away from ground. And
confirm that the service break works well.
2. Start the engine and allow the machine
to face a slope of 18% (angle is
10°12′) .The road should be flat and dry.
3. Step on the service brake pedal and
stop the machine. Put the transmission
control knob in the neutral position and
then stop the engine.
4. Pull the parking lever button, loose the
service brake pedal slowly and check if the
machine moves or not.