WRENCH 5409863 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A - Distilled Water -
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 cooling system pressure cap slowly to relieve pressure only when engine is stopped and allow sufficient time for the cooling system to cool.Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.
Drain the coolant below the level of the diesel exhaust fluid module. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the correct draining and filling procedures.
Illustration 1 g06302351
Remove bolts (1) and plate (2).
Illustration 2 g06303012
Remove bolts (3) and guard (4).
Illustration 3 g06303014
Remove bolts (5) and cover (6).
Illustration 4 g06312483Note: Do not attempt to pry or pull the tabs out of the connections on hose assemblies (7) as damage will occur.Note: Refer to Special Instruction, REHS8231, "Removal Procedures for Diesel Exhaust Fluid (DEF) Connectors" for the correct removal procedure for hose assemblies (7).
Disconnect hose assemblies (7).
Loosen the clamps and disconnect hoses (8).
Illustration 5 g06312485
Cut cable straps (9) and disconnect harness assembly (10).
Illustration 6 g06312488
Remove screws (11) and manifold (DEF heater) (12).
Illustration 7 g06312491
Loosen clamp (13) and remove filter assembly (14).
Illustration 8 g06312493
Remove screws (15) and retainer (16).
Illustration 9 g06312494
Remove filter assembly (17).Installation Procedure
Install manifold (DEF heater) (12) in the reverse order of removal.
Illustration 10 g06312697
Tighten screws (11) to a torque of 5 1 N m (44 9 lb in) in the tightening sequence shown in Illustration 10.
Tighten screws (11) again to a torque of 5 1 N m (44 9 lb in) in the tightening sequence shown in Illustration 10.
Apply Tooling (A) to the O-ring seals inside hose assemblies (7).