KIT-SEAL 3509173 - Caterpillar

Disconnect hose assembly (4). Disconnect harness assembly (1). Remove bolts (3) and modulating valve (2) .
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Remove seal (5) from modulating valve (2) .
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Remove nut (6) and coil assembly (7) .
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Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Remove cartridge assembly (8) from valve body (9) .
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Remove O-ring seals (10) from cartridge assembly (8) .
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Remove spool assembly (11) and spring (12) from valve body (9) .Installation Procedure
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 Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
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Install spool assembly (11) and spring (12) into valve body (9) .
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Install O-ring seals (10) onto cartridge assembly (8) .
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Improper assembly of parts that are spring loaded can cause bodily injury.To prevent possible injury, follow the established assembly procedure and wear protective equipment.
Install cartridge assembly (8) into valve body (9). Tighten cartridge assembly (8) to a torque of 50 5 N m (37 4 lb ft).
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Install coil assembly (7) and nut (6). Tighten nut (6) to a torque of 13 2 N m (10 1 lb ft).
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Install a new seal (5) on modulating valve (2) .
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Position modulating valve (2) and install bolts (3). Tighten bolts (3) to a torque of 30 4 N m (266 35 lb in). Connect harness assembly (1). Connect hose assembly (4) .End By: Install the cab. Refer to Disassembly and Assembly, "Cab - Install".