793C Off-Highway Truck Power Train Caterpillar


Relief Valve (Torque Converter Inlet) - Remove and Install

Usage:

793C 4GZ

Removal Procedure

Start By:

  1. Install the truck body retaining cable. Refer to Disassembly and Assembly, "Truck Body Retaining Cable - Remove and Install".


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.


------ WARNING! ------

At operating temperature, the oil in the power train is hot and under pressure. Hot oil can cause burns. Remove the breather filter cap when the engine is stopped and the breather cap is cool enough to touch by hand.

Slowly loosen the breather filter cap in order to release any pressure in the oil tank. Be careful of hot hydraulic oil when any lines are disconnected from the components of the power train.


------ WARNING! ------

The space between the body and the frame becomes a zero clearance area when the body is lowered. Failure to install the retaining cable can result in injury or death to personnel working in this area.



NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.




    Illustration 1g00507941

  1. Remove four bolts (2), the four washers, and torque converter inlet relief valve (1) from the torque converter. The torque converter inlet relief valve weighs approximately 6 kg (13.2 lb).


    Illustration 2g00507947

  2. Remove O-ring seal (3) (not shown), O-ring seal (4) (not shown), and O-ring seal (5) from the valve.

Installation Procedure

Note: Inspect the O-ring seal. Replace any O-ring seals that are worn or damaged.

Note: When the O-ring seals are installed, lubricate the seals with the same fluid that is being sealed.



    Illustration 3g00507947

  1. Install O-ring seal (5), O-ring seal (4) (not shown), and O-ring seal (3) (not shown) on the valve.


    Illustration 4g00507941

  2. Install torque converter inlet relief valve (1), four washers, and four bolts (2). The torque converter inlet relief valve weighs approximately 6 kg (13.2 lb).

End By:

  1. Remove the truck body retaining cable. Refer to Disassembly and Assembly, "Truck Body Retaining Cable - Remove and Install".

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