CORE AS-RADIATOR 3876051 - Caterpillar

Assembly Procedure
Inspect all parts and clean all parts. If any parts are worn or damaged, use new Caterpillar parts for replacement.
Inspect all seals. Damaged seals must be replaced. Use new Caterpillar seals for replacement.
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Install two O-ring seals (20) and (22). Install retainer (24), ball (23), seat (21) and plug (19) into the pump body.
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Install seal (18) in bushing (16). Be sure that the flat or the smooth side of the seal faces the bushing. Install seal (17) in the bushing. Smooth the seal in place with your finger. Do not reuse a seal that falls freely into the pocket in the bushing.
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Position bushing (16) into the control housing and install retaining ring (15) .
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Install centering spring kit (14). Be sure that the springs are centered.
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Put a thin coat of oil on control spool (11) and sleeve (12). Install control spool (11) in sleeve (12). Control spool (11) should turn freely in the sleeve.
Install pin (13) that holds control spool (11) and sleeve (12) together. Pin (13) should be flush on each side of sleeve (12) after installation.
Position the control housing in a vertical position. Install thrust bearing assembly (10) .
Install the spool and sleeve assembly. Rotate the assembly and gently push the assembly into the housing. Pin (13) should be kept nearly horizontal. The spool and sleeve assembly should be flush with the metering edge of the housing (side with fourteen holes in the end). Be sure that the spool and sleeve assembly turn freely in the control housing.
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Install spacer plate (5). Be sure that the bolt holes in spacer plate (5) align with the tapped holes in the control housing.
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Install the O-ring seal onto gerotor housing (4) .
Position gerotor housing (4) over spacer plate (5) .
Install drive (6). Be sure that the slot in drive (6) engages with pin (13) .
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The Steering Control Valve must be timed. This requires the correct relationship between pin (13), gerotor (7) and gerotor housing (4). One end of pin (13) will point to the largest clearance between the gerotor and the gerotor housing. The opposite end of pin (13) will point to the least clearance between the gerotor and the gerotor housing. Pin (13) cannot be seen after drive (6) is installed. Therefore, it will be necessary to make a mark on the gear end of drive (6) for proper alignment.
Install rotor (7) in gerotor housing (4). Put the gerotor in position on the spacer plate. There should be a parallel relationship of the components. Align all bolt holes. Be sure not to disengage the gerotor from the drive.
Install spacer (8) in gerotor housing (4) .
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Position end cap (2) and install seven bolts (1) .
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Torque Sequence
Tighten seven bolts (1) to an initial torque of 17 N m (13 lb ft). Tighten seven bolts (1) to a final torque of 31 N m (23 lb ft).End By: Install the metering pump. Refer to Disassembly and Assembly, "Metering Pump (Steering) - Install".