C15 and C18 On-Highway Engines Water Temperature Regulator Housing - Remove and Install Caterpillar


Water Temperature Regulator Housing - Remove and Install
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C15 and C18 On-Highway Engines [UENR3300]
COOLING SYSTEM
LINES GP-WATER
C15 and C18 On-Highway Engines Water Temperature Regulator Housing - Remove and Install
1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
207-1601  Rubber Lubricant 
221-8647  Seal Installer   


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 containing fluids.

Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.

Dispose of all fluids according to local regulations and mandates.


  1. Drain the coolant from the cooling system into a suitable container for storage or for disposal. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the correct draining and filling procedures.


    Illustration 1g02160354

  2. Remove tube assembly (1).

  3. Remove bolt (3) and the clip.

  4. Disconnect harness assembly (4).

  5. Remove bolts (5).

  6. Remove the water temperature regulator housing (2).


    Illustration 2g02827396

  7. Remove bolts (6) and remove housing (7).

  8. Remove tube (9) and remove O-ring seals (8).


    Illustration 3g02827479

  9. Remove and discard seal (11). Remove water temperature regulators (10).


    Illustration 4g02827497

  10. Remove lip seals (12). Note the orientation of the lip seals for installation purposes.

Installation Procedure

  1. Install water temperature regulator housing (2) in the reverse order of removal.

    1. Apply Tooling (A) to the seal run surface of lip seals (12). Use Tooling (B) to install lip seals (12).

    2. Apply Tooling (A) O-ring seals (8) and tube assemblies (1).

    3. Tighten water temperature sensor (2) to a torque of 20 ± 3 N·m (177 ± 27 lb in).

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