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TUBE AS 3598778 - Caterpillar



3598778 TUBE AS Caterpillar parts TUBE
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31
Alternative (cross code) number:
CA3598778
359-8778
3598778
Caterpillar 3598778 TUBE AS

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Oil Flow in the Astern Position
OIL FLOW IN THE ASTERN POSITION 1 Selector valve body.2 Load piston.3 Stop.4 Orifice.5 Check valve.6 Directional spool valve.7 Port to sump.8 Port to sump.9 Port to astern clutch.10 Pressure regulating springs.11 Ball check valve.12 Port to oil cooler.13 Port to ahead clutch.14 Oil inlet port.15 Port to sump.16 By-pass valve.With the engine running and the directional valve (6) in the astern position, the oil flow through the selector valve body (1) is as follows:Pressure oil from the filter flows through the by-pass valve (16), through the directional spool valve bore and to the astern clutch port (9). Oil which leaks by the spool valve is returned to the sump in the same manner as in the ahead clutch.The regulation of oil pressure is the same as in the ahead position, except that the ball check valve (11) is held at the opposite end of its bore.Removal and Installation
1-Outlet oil line. 2-Selector valve. 3-Inlet oil line.
REMOVING SELECTOR VALVEDisassembly and Assembly
1-Valve body. 2-Cover. 3-Pin. 4-Lever.Install the selector valve in reverse order of removal using new O-ring seals.
2-Cover. 5-Detent.
Use extreme care when removing valves from the valve body. Nicked or scratched valves can cause improper operation of the selector valve.
6-O-ring seals. 7-Pressure regulating springs. 8-Spacers. 9-Load piston.
REMOVING BY-PASS VALVE
10-O-ring seals.Use new O-ring seals (6) and (10) when assembling the selector valve.
11-Ring. 12-Retainer. 13-Spring. 14-Damping valve. 15-By-pass valve.
16-Check valve. 17-Stop. 18-Seal and bushing.Inspect seal and bushing (18) and replace if worn or damaged.
REMOVING DIRECTIONAL VALVEInspect all of the valves and replace if they are worn or damaged.Oil Filter And Oil Filter By-Pass Valve
Removal and Installation
1-Cover. 2-Housing.
3-Spring. 4-By-pass valve.
REMOVING OIL FILTERWhen replacing the filter cover (1), inspect the O-ring seal and replace if damaged.Install in reverse order of removal using a new oil filter element.Filter By-Pass Valve Disassembly and Assembly
1-By-pass valve. 2-Ring.
3-Washer. 4-Spring. 5-Valve.Inspect valve


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