0433462 JOHNSON SENDING UNIT ASSY.

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide", for tools and supplies suitable to collect and contain fluids in Caterpillar machines.Dispose of fluids according to local regulations and mandates.
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the attachments have been lowered, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
At operating temperature, the engine coolant is hot and under pressure.Steam can cause personal injury.Check the coolant level only after the engine has been stopped and the fill cap is cool enough to touch with your bare hand.Remove the fill cap slowly to relieve pressure.Cooling system conditioner contains alkali. Avoid contact with the skin and eyes to prevent personal injury.
Hot oil and hot components can cause personal injury. Do not allow hot oil or hot components to contact skin.At operating temperature, the engine coolant is hot and under pressure.Steam can cause personal injury.Check the coolant level only after the engine has been stopped and the cooling system pressure cap is cool enough to touch with your bare hand.Remove the cooling system pressure cap slowly to relieve pressure.Cooling system conditioner contains alkali. Avoid contact with the skin and eyes to prevent personal injury.
1. Drain the coolant from the cooling system. The capacity of the cooling system is 56 L (15 US gal). 2. Disconnect hose assembly (1) from the radiator assembly.3. Loosen four hose clamps (2). Slide hose (3) towards the front of the machine. 4. Loosen the hose clamp and disconnect hose assembly (4) from the radiator header tank.5. Loosen four hose clamps (6). Slide hose (5) towards the front of the machine. 6. Loosen the hose clamp and disconnect hose assembly (4) from the radiator assembly. Remove hose assembly (4). 7. Remove bolt (7), the nut and the washers.8. Loosen two hose clamps (9). Slide hose (8) towards the front of the machine. 9. Loosen hose clamp (10). Remove bolt (12), the nut and the washers. Separate tube assembly (11) from the radiator hose. 10. Disconnect hose assemblies (13) and (14) (if equipped) from the bottom of the radiator assembly. 11. Disconnect hose assemblies (15) and (16) (if equipped) from the bottom of the radiator assembly.12. Disconnect hose assembly (17) from the bottom of the radiator assembly. 13. Remove 12 bolts (18) and the washers that hold the upper and lower fan guards to the radiator assembly. Remove the upper fan guard from the machine. 14. Attach a hoist and suitable lifting chains to the existing eye bolts on the radiator assembly, as shown. 15. Remove two bolts (19), the washers and cap (20) from both sides of the radiator assembly. 16. Remove four bolts (21) and the washers. Remove four mounts (22). 17. Carefully remove the radiator assembly from the machine. The weight of the radiator assembly is 229 kg (644 lb).