TA22 Transmission Caterpillar

Modulating Valve (Transmission Clutch) - Remove and Install

Usage:

Removal Procedure

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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.

Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.

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Illustration 1	g01269500

Disconnect harness assembly (4).
Remove bolts (1), modulating control valve (2), and O-ring seal (3).
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Illustration 2 g01265571
Remove nut (5) and washer (6).
Remove coil assembly (7).
Remove cartridge (8) and remove O-ring seal (9).
Repeat steps 1 through 5 for the remaining modulating control valves.

Installation Procedure

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Illustration 3	g01265571

Lubricate O-ring seal (9) with lubricant that is being sealed. Install O-ring seal (9).
Install cartridge (8). Tighten cartridge (8) to a torque of 50 ± 5 N·m (37 ± 4 lb ft).
Install coil assembly (7).
Install washer (6) and nut (5).
Tighten nut (5) to a torque of 13 ± 2 N·m (10 ± 1 lb ft).
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Illustration 4 g01269500
Install O-ring seal (3).
Install modulating control valve (2) and install bolts (1). Torque bolts (1) to a torque of 30 ± 4 N·m (22 ± 3 lb ft).
Connect harness assembly (4).
Repeat steps 1 through 8 for the remaining modulating control valves.