How to Replace and Check Caterpillar TH360B Telehandler cooling system coolant
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WARNING
Personal injury can result from hot coolant, steam and alkali.
At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.
Remove filler cap slowly to relieve pressure only when engine is stopped and radiator cap is cool enough to touch with your bare hand.
Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.
NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog"for tools and supplies suitable to collect and contain fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
If the coolant in the machine is changed to another type of coolant, consult your Caterpillar dealer.
1. Allow the engine to cool.
2. Loosen pressure cap (1) from the coolant tank slowly in order to release pressure. Remove the pressure cap.
3. Loosen drain valve (2) that is located at the bottom right corner of the radiator. Drain the coolant into a suitable container.
4. Remove coolant drain plug (3) that is located in the engine block above the starter. Drain the coolant into a suitable container.
Note: Check the threads of the drain plug for damage.
Check the sealant on the drain plug for damage. Thedrain plug can be reused if threads are not damaged and the sealant is not damaged.
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5. Loosen hose clamp (5) that is located on the hydraulic oil cooler. Remove hose (4). Allow the coolant to drain into a suitable container.
6. If the machine is equipped with a cab heater, turn the heater control that is located inside the cab to the HOT position. Loosen hose clamp (6). Remove hose (7). Allow the coolant to drain into a suitable container.
7. Flush the cooling system with clean water until the draining water is transparent.
8. Close drain valve (2).
9. Reinstall coolant drain plug (3) in the engine block above the starter. Tighten the plug.
10. 10. Reinstall hoses (4) and (7). Tighten clamps (5)
and (6).
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NOTICE
Add the coolant solution at a maximum rate of five liters per minute. This will reduce the chance of trapping air inside the engine block. A large amount of trapped air can cause localized heating to occur upon start-up.
Localized heating may result in engine damage, which may lead to failure of the engine.
11. Add the coolant into the coolant tank. Refer to Operation and Maintenance Manual, "Capacities
(Refill)"
12. Start the engine. Operate the engine without the pressure cap for the coolant tank until the coolant temperature regulator opens and the coolant level stabizes.
13. Maintain the coolant level up to the FULL mark on the coolant tank.
14. Inspect the gasket of the pressure cap. If the gasket is damaged, replace the cap.
15. Install the pressure cap on the coolant tank.
16. Stop the engine.
17. WARNING
Personal injury can result from hot coolant, steam and alkali.
At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.
Remove filler cap slowly to relieve pressure only when engine is stopped and radiator cap is cool enough to touch with your bare hand.
Do not attempt to tighten hose connections when the coolant is hot, thehosecan comf causing burns.
Park the machine on level ground. Fully retract the boom and fully lower the boom. Move the transmission control to the NEUTRAL position and ensure that the parking brake is engaged. Shut off the engine.
The coolant tank for the cooling system is located in the engine compartment.
Check the coolant level while the engine is cold. The coolant level should be maintained to the "FULL" line on the coolant tank.
