TECHNICAL INFORMATION BULLETIN
August 9, 2005
Component Code(s) 1274
SUBJECT: FUEL DELIVERY PROBLEMS ON THE LARGE SOIL COMPACTORS
Large Soil Compactor reports indicate fuel delivery problems resulting in low power, smoking, rough running, hard starting, and stalling. Pressure checks have shown very low fuel pressure at the fuel injection pump inlet. The Olive assembly on the fuel tube from the lift pump to the fuel filter may be installed incorrectly, allowing air to enter the system or the olive to restrict the flow.
The correct installation procedure is shown below.
- Put male backnut (2) on tube (1) as shown in Figure 1.
- Put olive (3) on tube (1) so 2-3 mm of the tube end (4) is sticking out past the olive (3) as shown in Figure 2.
- Push nut (2) up to the olive (3) as shown in Figure 3 and insert tube assembly into its housing location until back nut reaches threads. DO NOT PUSH TUBE IN ANY FARTHER.
- Hand tighten the nut 2 turns and then push tube in until it bottoms out. Tap tube lightly to ensure tube is bottomed out. Torque back nut to 9 N.m (7 lb ft).
- When assembly is complete, pull on tube lightly to make sure the seal/connection is good
- When finished assembling the water separator connection of the tube, proceed back to instruction #1 for the lift pump connection of the tube.
NOTE: Inspect the fuel lines, fuel cooler, transfer pump, and fuel filters for plastic shavings in the system.
NOTE: If a black residue is found in the filter, inspect the fuel gauge float for possible damage.
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