Section V. MAINTENANCE OF FUEL SYSTEM

Table 4-2. Organizational Maintenance Troubleshooting Chart--Continued

Corrective action

Probable

cause

Malfunction

b. Slight leak in diaphragm.

b. R e p l a c e d i a p h r a g m ( p a r a 4 - 1 8

through 4-20 ).

c. Replace diaphragm pot (para 4-18

c. Cracked diaphragm pot.

through 4-20 ).

a. Replace plunger bearings (para 4-

a. Plunger bearing defective.

4. Pump is noisy

18 through 4-20).

b. Adjust spring length (para 4-20).

b. Plunger spring length too long,

allowing plunger to strike pot.

c. Debris caught in diaphragm pot.

c. Clean pot of debris.

a. Replace wheel.

a. Wheel

defective.

5. Wheels fail to turn or turn with

b. Straighten or replace axle (para 4-

b. Axle bent.

difficulty.

22 through 4-24).

Section V. MAINTENANCE OF FUEL SYSTEM

4 - 1 0 . Disassembly

4-9. Description

Disassemble the fuel tank, lines, fittings, and fuel

The fuel system consists of the fuel tank, fuel

strainer in the sequence shown in figure 4-1. Drain

strainer with shutoff valve, and the fuel lines and

t h e fuel tank prior to removing it from the

fittings. The fuel tank is mounted with straps which

secure it to brackets that are bolted to the pump

e q u i p m e n t . Unless chain or cap is damaged

val of permanently secured cap is unnecessary.

assembly.

4-3