ROLLER & BEARING AS 5071286 - Caterpillar

Start By:
Remove the valve cover.
Do not open the high pressure fuel system without allowing the fuel system to purge. After the engine has shut down, allow the fuel system to purge for ten minutes. This operating fuel system contains high pressure. Exposure to high pressure fuel can result in personal injury.
Note: Use Tooling (B) to cap tube assemblies, fittings, ports, and any openings in the fuel system in order to prevent contamination.Note: Do not remove all the quills in order to maintain the alignment of the rail. Remove one at a time and replace before the removal of the next. If necessary, replace with new quill.
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Remove bolt (3) and the washer. Remove tube assembly (1). Disconnect harness assembly (2).
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Apply clean engine oil to Area (X). Repeat for the opposite collar. Remove bolts (4) and bolts (6). Remove tube assembly (5). Note: Replace with new bolts (4) and (6).
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Disconnect harness assembly (7) from electric unit injector (8). Remove bolt (9) and the washer.
Place an identification mark on electronic unit injector (8) for installation purposes. Each electronic unit injector must be reinstalled in the original location. Use Tooling (A) to pry electronic unit injector (8) out by the retaining collar.
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Check O-ring seals (10) and (11) on electronic unit injector (8). Installation Procedure
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If necessary, install new O-ring seals (10) and (11) onto electronic unit injector (8). Apply clean engine oil to O-ring seals (10) and (11).
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Check the cleanliness of the sealing surface for the unit injector in the cylinder head. If necessary, use Tooling (C) to clean the sealing cone on the unit injector.
Install electronic unit injector (8). Tighten bolt (9) to a torque of 30 - 50 N m (22 - 38 lb ft).
Remove bolt (9). Hand tighten bolt (9) and the washer. Tighten bolt (9) to a torque of 10 N m (89 lb in). Connect harness assembly (7) onto electronic unit injector (8).
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Apply clean engine oil to Area (X). Repeat for the opposite collar. Apply clean engine oil to the ends of tube assembly (5). Install tube assembly (5). Install new bolts (4) and new bolts (6) hand tight. Evenly tighten new bolts (4) to a torque of 20 N m (15 lb ft). Evenly tighten new bolts (6) to a torque of 20 N m (177 lb in). Note: Do not rotate new bolts (4) and (6) more than 90 degrees at a time.
Tighten the injector bolt to a torque of 100 2 N m (74 1 lb ft). Evenly tighten new bolts (4) to a torque of 40 N m (30 lb ft). Evenly tighten new bolts (6) to a torque of 40 N m (30 lb ft). Note: Do not rotate new bolts (4) and (6) more than 45 degrees at a time.
Illustration 9 g02087086
Connect harness assembly (2). Replace the O-ring seals on both ends of tube assembly (1). Install tube assembly (1). Install the washer and bolt (3).
Perform “fuel rail leakage - check”. Refer to Testing