COVER AS 3377070 - Caterpillar

Damaged Filter
A damaged filter could cause irreparable failures to the pump by allowing debris (or some pieces of the filter) to enter the pump. That could jam the pump vanes, deteriorating significantly the pump performances. If any damage is noticed or suspected, the affected parts must be replaced. Ensure that there is no debris inside the fuel circuit.Pump Having Run Dry
The refueling pump may run dry. This could be caused by an empty barrel or the start switch unintentionally pushed.
Remove the three screws (5) of the front cover (4) and remove the cover and check the following:
The O-ring seal (6) cleanliness.
If the rotor (7) can turn by hand.
After having removed the rotor (by axial movement outwards), check the integrity of the vanes (8) .
Replace the appropriate parts using service kits. Reassemble the parts and tighten the 3 screws to 7 0.2 N m (62 1.8 lb in).Electrical Circuit
Note: When testing, never activate the pump without fuel
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Problem
Presence of fuel in the tool box may occur due to the refueling system. It is recommended to 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
Internal lip seal
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(9) Foot valve (10) Pump harness terminal (11) Refueling pump (12) Clamps
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(13) Fittings (14) Cover (15) Cover screws and lock washers
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(16) O-ring
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(17) 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