Instruction Manual

Caterpillar: Non-Confidential
insert the key into the ignition and turn
clockwise to 1 gear position, turn on the
machine power; toggle the transfer switch
of the air-conditioning system to the warm
position.
2. Manually turn the engine water inlet
pipe valve to the ON position (when in the
ON position, valve handle and the pipe are
in the same direction).
3. Open the radiator filler cap, fill the
coolant slowly, until the coolant level is at
the high level mark of the radiator tank,
and maintain the level for ten minutes.
Attention: When filling the coolant, the air
must be vented from the lines of the engine
cooling system.
4. Keep the radiator filler cap open, start
engine, run engine for 5 minutes at low idle
speed, then another 5 minutes at high idle
speed, and enable the coolant temperature
to go above 85 °C.
5. Check the coolant level again. If
necessary, continue to fill coolant to the
high water level mark of the surge tank.
6. Check the sealing of the water radiator
filler cap and change the filler cap if it is
damaged.
Attention: If the coolant leakage is caused
by the user, for any subsequent losses
resulting from decreases in anti-freeze fluid
density, Caterpillar (Qingzhou) Ltd. will not
take any responsibility.
Clean Cooling System
Every 2,000 service hours or two years
(whichever occurs first), completely
replace the coolant and clean cooling
system. Before this, if the coolant becomes
contaminated, the engine overheats or
there are some bubbles in the radiator,
clean the cooling system. Use the following
steps to clean cooling system:
1. Turn the power to the negative switch;
insert the key into start switch and turn
clockwise to 1 gear position, turn on the
machine power; toggle the transfer switch
of the air-conditioning system to the warm
position.
2. Turn the manual valve of the engine
water inlet pipe to the ON position (when in
the ON position, valve handle and the pipe
are in the same direction).
3. Start engine, run the engine for 5
minutes at idle speed, then stop engine.
Turn the start switch to the first gear
position again, turn on the machine power;
toggle the transfer switch of the
air-conditioning system to the warm
position, make sure the electromagnetism
water valve in open position.
4. Wait until the temperature of the
engine coolant drops to below 50°C, then
remove the radiator filler cap slowly in
order to relieve pressure.
5. Open the drain valve under the
radiator and the drain valve of engine
lubricating oil cooler, drain the coolant to a
container.
6. After draining the coolant, close the
drain valve under the radiator and drain
valve of engine lubricating oil cooler.
7. Check all water pipes and the clamps
of the cooling system for damages, make
replacement if necessary. Check the
radiator for leaks, damage and dirt, clean
and repair if necessary.
8. Fill the engine cooling system with
cleaning fluid, which is mixed by the water
and the sodium carbonate, the proportion
of mixture is in every 23 liters of water add
0.5 liters sodium carbonate. The fluid level
should be at the engine normal fluid level,
and remain stable after ten minutes.
Attention: When filling the cleaning fluid,
the air must be vented from the lines of the
engine cooling system. During the entire
cooling system cleaning process, the
engine is running with the radiator filler cap
open.
9. Keep the radiator filler cap open, start
engine, when coolant temperature
increases to more than 80C, run the
engine for another 5 minutes.
10. Stop the engine and drain cleaning
fluid.
11. Fill the engine cooling system with
clean water to the normal level, and keep
for ten minutes. Keep the water radiator