Caterpillar Caterpillar Backhoe Loader 422E 422E

WARNING: Pressurized system: Hot coolant can cause serious burn. To open cap, stop engine, wait until radiator is cool. Then loosen cap slowly to relieve the pressure.

NOTICE: Mixing ELC with other products will reduce the effectiveness of the coolant. This could result in damage to cooling system components.

Note: This machine is shipped with Extended Life Coolant. Extended Life Coolant is recommended for use.

Flushing the Extended Life Coolant From the Cooling System

Has the cooling system been flushed with clean water?

Flushing a Standard Coolant From the Cooling System

Has the cooling system been flushed with a Caterpillar cleaning agent?

Has the lift cylinder brace been installed?

Note: A qualified service person should perform the valve lash check and/or the valve lash adjustment. Special tools and training are required.

Refer to your machine's Service Manual for complete instructions.

Was the valve lash check successful?

If not successful, describe the issues found.

Sign off on the 1000 Hourly Backhoe Loader Maintenance

Engine Crankcase Breather - Replace

Loosen the clamp (9) and remove the hose (10) from the connector (12)

Remove the setscrews (8) and remove the connector (12) from the cylinder head. Remove the gasket (13). Remove the O-ring seal (11) from the connector. Discard the gasket (13) and the O-ring seal (11)

Remove the cover (1) from the valve mechanism cover (5)

WARNING: Personal injury can result from parts and/or covers under spring pressure. Spring force will be released when covers are removed. Be prepared to hold spring loaded covers as the bolts are loosened.

Remove the screws (2). Remove the plate (3)

Remove the diaphragm (4) and the cap (6). Remove the spring (7). Discard diaphragm (4)

WARNING: Improper assembly of parts that are spring loaded can cause bodily injury. To prevent possible injury, follow the established assembly procedure and wear protective equipment.

Install the spring (7), the cap (6), and a new diaphragm (4)

Always recycle a battery. Never discard a battery.

Always return used batteries to one of the following locations:

• An authorized battery collection facility

Battery or Battery Cable - Inspect/Replace

1. Turn the engine start switch to the OFF position. Turn all switches to the OFF position.

2. Disconnect the negative battery cable from the frame.

Warning: This maintenance check requires trained personnel with PPE!

Cooling System Water Temperature Regulator - Clean/Replace

Thermostat replaced regularly to avoid unscheduled downtime and cooling system problems

Thermostat replaced after the cooling system has been cleaned

Cooling system coolant drained to a level that is below the thermostat housing when replacing the thermostat

Caterpillar engines incorporate a shunt design cooling system. It is mandatory to always operate the engine with a thermostat.

Hose removed from the thermostat housing assembly