TM 3-4230-218-30&P
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 3.
Check for slipping clutch.
a.
With engine running at a constant speed, examine water pump
drive pulley for erratic rotating speeds.
b.
If speeds are erratic, clutch is slipping and is defective.
c.
If clutch is defective, replace clutch (refer to page 2-33).
d.
If clutch is not defective, proceed to step 4.
Step 4.
Check for defective manometer assembly.
If proper unit set up is made and water is flowing from accessories
but no pressure is indicated, replace water manometer assembly
(refer to page 2-71).
12. NO HEATER FUEL PRESSURE.
Step 1.
a.
b.
c.
d.
e.
f.
g.
h.
i.
Step 2.
Check for defective or leaking fuel pump.
Verify fuel pump turns freely.
If fuel pump does not turn freely, replace fuel pump (refer to
page 2-56).
Set up and start unit.
Verify no leaks.
If leaks are observed at pump inlet or outlet, tighten fittings.
With unit still running, carefully lift fuel lines from fuel can
and observe return fuel line fuel flow.
If no flow is observed and no pressure is indicated on control
panel fuel pressure gage, pump is defective.
If fuel pump is defective, replace fuel pump (refer to page
2-56).
If fuel pump is not defective, proceed to step 2.
Check for slipping clutch.
Refer to MALFUNCTION 11, step 3.
2-9
