HOSE ASSEM. 5S5642 - Caterpillar

Removal Procedure
Start By:
Remove the high-pressure fuel rail.
Table 1
Required Tools
Tool Part Number Part Description Qty
A 339-9352 Cap Kit(1) 1
265-2256 Lint Free Wipes 1
(1) Discard cap after single use.
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.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
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 (A) to cap tube assemblies, fittings, ports, and any opening in the fuel system to prevent contamination.Note: Do not remove all the quills at one time. To maintain alignment, leave least two quills attached to the fuel rail at all times. If necessary, replace with new quill.
Illustration 1 g02087086
Remove bolt (3) and the washer. Remove tube assembly (1). Disconnect harness assembly (2).
Illustration 2 g02087089
Apply clean engine oil to Area (X). Repeat for the opposite collar. Remove bolts (4) and (6). Remove tube assembly (5). Note: Replace bolts (4) and (6) with new bolts.
Illustration 3 g02087090
Remove flow limiter (7) from the fuel rail. Note: Apply protective caps to flow limiter (7 ) to prevent contamination. Clean Tooling (A) before using to avoid contamination in the fuel system.Installation Procedure
Note: Carefully remove Tooling (A) to prevent contamination.
Illustration 4 g02087090Note: Use a clean plastic squirt bottle to apply clean engine oil. Do not apply clean engine oil by hand.
Apply clean engine oil to the sealing face of flow limiter (7) and the fuel rail.
Install flow limiter (7) into the fuel rail.
Illustration 5 g02087089
Illustration 6 g01285695
Apply clean engine oil to Area (X). Repeat for the opposite collar. Apply clean engine oil to the ends of tube assembly (5). Replace external O-ring seals on tube assembly (5) and lubricate the O-ring seals on the tube assembly with clean engine oil. Install tube assembly (5).
Replace bolts (4) and (6) with new bolts and install hand tight. Tighten bolts (4) evenly to a torque of 20 N m (177 lb in).
Tighten bolts (6) evenly to a torque of 20 N m (15 lb ft).
Tighten bolts (4) evenly to a final torque of 40 5 N m (30 4 lb ft).
Tighten bolts (6) evenly to a final torque of 40 5 N m (30 4 lb ft).
Illustration 7 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). End By:
Install the high-pressure fuel rail.