VALVE AS-CHECK 1436971 - Caterpillar

Installing the Cover on the 204-4945 Unit Injector Hydraulic Pump Gp and the 232-3912 Unit Injector Hydraulic Pump Gp
Install the two new 239-2402 Seals (10) on the back face of the HEUI pump (1). Refer to Illustration 9.
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(1) HEUI pump (10) 239-2402 Seals
Install a new 179-8128 Seal (11) on the cover (16). Refer to Illustration 15. Use 1U-6396 O-Ring Assembly Compound in order to hold the seal in place during assembly. Ensure that the seal is completely seated.
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Rear view of cover (11) 179-8128 Seal (16) Cover
Prior to removing the service bolt, ensure that the pump is properly clamped into the vise. Refer to Illustration 6. Remove the service bolt and position the cover (16) on the HEUI pump.
Install the four tie bolts (8). Tighten the four tie bolts (8) to a snug fit by using Tooling (C) .
Install the three mounting bolts (7). Tighten the three mounting bolts (7) to a torque of 4.0 0.2 N m (35 2 lb in) by using Tooling (B) .
Prior to the final tightening of the bolts, adjust the pump to the position that is shown in Illustration 4.
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204-4945 Unit Injector Hydraulic Pump Gp and 232-3912 Unit Injector Hydraulic Pump Gp (1) HEUI pump (4) Drive gear (5) 227-5904 O-Ring Seal (7) Bolts for the cover (8) Tie Bolts (9) Location for service bolt (15) 185-3241 O-Ring Seal (16) Cover
Tighten bolts 1 through 4 in a numerical sequence to a torque of 28 5 N m (21 4 lb ft) by using Tooling (C). Refer to Illustration 17.
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Tightening sequence for installing the cover
Tighten bolts 5 through 7 in a numerical sequence to a torque of 8.0 0.4 N m (70 4 lb in) by using Tooling (B). Refer to Illustration 17.Note: Do not overtighten the bolts. The aluminum housing of the pump could be damaged.
In order to ensure that the gasket completely compresses, repeat Step 7 through Step 8.
Stamp the back of the HEUI pump with rework code "CV". Also stamp the left side of the HEUI pump with rework code "CV". Refer to Illustration 18.Note: The identifier must be visible on the engine for future identification.
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(14) Location for stamping the rework code onto the HEUI pumpReinstalling the HEUI Pump
Install the HEUI pump on the engine. Refer to the Disassembly and Assembly Manual for the correct procedure. Ensure that the system does not have any leaks.Note: Two new O-ring seals are provided in the 262-5465 Check Valve Kit and the 266-4455 Check Valve Kit . Use the appropriate seal for your individual application. Use the new 227-5904 O-Ring Seal (5) on the 232-3911 Unit Injector Hydraulic Pump Gp and the 232-3912 Unit Injector Hydraulic Pump Gp . Use the new 185-3241 O-Ring Seal (15) on the 204-4944 Unit Injector Hydraulic Pump Gp and the 204-4945 Unit Injector Hydraulic Pump Gp . Refer to