SEAL 8J4386 - Caterpillar

Removal Procedure
Start By:
Remove the transmission hydraulic control relief valve. Refer to Disassembly and Assembly, "Relief Valve (Transmission Hydraulic Control) - Remove".Note: Cleanliness is an important factor. Before you begin the removal procedure, the exterior of the components should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
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, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g01209596
Remove bolts (1), cover (2), and the gasket.
Illustration 2 g01209597
Remove torque converter inlet relief valve (3) .
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Remove O-ring seal (4) .Installation Procedure
Note: Cleanliness is an important factor. Before assembly, thoroughly clean all parts in cleaning fluid. Allow the parts to air dry. Do not use wiping cloths or rags to dry parts. Lint may be deposited on the parts which may cause trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. Dirt and other contaminants can damage the precision component. Perform assembly procedures on a clean work surface. Keep components covered and protected at all times.Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the components, if necessary.
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, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Illustration 4 g01209614
Install O-ring seal (4) .
Illustration 5 g01209597
Install torque converter inlet relief valve (3) .
Illustration 6 g01209596
Position the gasket and cover (2). Install bolts (1) .End By: Install the transmission hydraulic control relief valve. Refer to Disassembly and Assembly, "Relief Valve (Transmission Hydraulic Control) - Install".