PLATE 3631159 - Caterpillar

Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.Problem
Presence of fuel in the tool box may occur due to the refueling system. Clean the interior of the tool box and the pump to improve leak detection accuracy.When the tool box and refueling system is clean and dry, refuel the machine using the refueling pump with a minimum of half the tank capacity (to be drained if needed).Solution
Note: During any disassembly or assembly, ensure that no debris enters the fuel circuit.This procedure should be used to find out the common causes of leaks for the following:
Fittings
Foot valve
Clamps
Front cover
Inner lip seal
Illustration 1 g03392096
(1) Foot valve (2) Pump harness terminal (3) Refueling pump (4) Clamps
Illustration 2 g03392098
(5) Fittings (6) Cover (7) Cover screws and lock washers
Illustration 3 g03392100
(8) O-ring
Illustration 4 g03392101
(9) Drain holeRecommended Actions
Fittings
Specifically check the inlet and outlet fitting unions (5) for leakage.The 229-1859 Refueling Pump and Motor Gp and the 368-5216 Fuel Transfer Pump Gp may develop leaks due to insufficient torque applied on fittings, fitting conformity, pump thread machining issue, or washer conformity.Ensure that correct torque is applied on the 2 fittings by tightening the fittings to 128 N m (94 lb ft). If a leak reoccurs, replace the appropriate parts using service kits.Leaks may occur on the 165-4962 Refueling Pump and Motor Gp due to insufficient torque applied on fittings, fittings conformity, pump thread machining issue, or lack of sealant into the threads.Replace the one 006-5707 Pipe Elbow and the two 229-1861 Hose Connectors . Before you assemble the parts, apply a sealant on the threads (Loctite 11415). Tighten both straight connectors to 80 N m (59 lb ft) and the elbow by turning 1 1/2 turn after hand tight.The 272-0709 Fuel Pump leaks may occur because of insufficient torque applied on fittings, fitting conformity, pump thread machining issues, or washer conformity.Replace the elbow and the two fittings (5) that consists of two 301-2524 Hose Connectors and two 301-2527 Washer Seals . Tighten both fittings to 50 N m (37 lb ft).Foot Valve
Despite the check valve in the suction end of the line, some fuel may go out through that way. If a seepage or leak is noticed, the foot valve will have to be replaced.Clamps
Three hose clamps (4) should be checked (foot valve, inlet, and outlet hose ends). The torque value of the clamps should be 7.5 N m (66 lb in). The hose integrity should be verified nearby clamps. In case of doubts, disassemble the clamp and cut the hose 4 cm (1.57 inch) from the end and reassemble with a torque value of 7.5 1 N m (66 9 lb in)Front Cover
Remove the three screws (7). Disassemble the front cover (6) and check the O-ring seal (8) cleanliness. Then reassemble the cover and tighten the three screws to 7 0.2 N m (62 2 lb in). Replace the appropriate parts using