TM 10-4320-344-24
Item
No.
7
8
9
10
11
12
Table 2-3.
Preventive Maintenance Checks and Services
for Pumping Assembly Model US636HCCD-1.
(Continued)
Interval
Quarterly
Semi-
annually
Semi-
annually
Semi-
annually
Semi -
annually
Semi -
annually
Location
Item to
Check/Service
ENGINE - CON’I’
Starter Assembly
PUMPING ASSEMBLY
Control Panel
Assembly
ENGINE
Engine
Intake and
Exhaust Manifolds
Rocker Arm
Assembly
Fuel Transfer
Pump Assembly
Procedure
Inspect for damage and
loose or missing mounting
hardware or wires.
Tighten
wire connections and
mounting hardware.
Replace
missing mounting hardware.
Replace starter as required
(para 2.21.18).
Remove fuse and check for
signs of burned element.
Remove four mounting bolts.
Remove control panel cover
(para 2.16.2). Check for
leaks,
loose wires, and
corrosion.
Replace damaged
or inoperable gauges. If
fuse element is burned,
r e p l a c e i t.
If wires are
loose, tighten them.
Replace or repair damaged
wiring harness (para
2 .1 6 . 6 ).
Inspect for cracks or
leaks.
Tighten loose
mounting hardware.
Replace
missing mounting hardware.
If engine is damaged or
leaking, notify direct
support maintenance.
Inspect for cracks and
leaks.
Replace intake or
exhaust manifold as
required (para 2.21.37 or
2 .
21 . 3 8 ).
Check and adjust valve
clearance as required (para
2 .
21 . 5 0 ).
Inspect for loose mounting
hardware and fuel line
connections.
Inspect fuel
transfer pump for cracks
and leaks.
Tighten loose
mounting hardware and
connections.
Service fuel
transfer pump as required
(para 2.21.16). Replace
fuel transfer pump as
required (para 2.21.6).
Not Fully Mission
Capable if:
Missing mounting
hardware.
Damaged starter.
Class III leak.
Damaged wiring
harness or hoses.
Class III leak.
Damaged or
cracked engine.
Damaged or
missing mounting
hardware.
Damaged or
cracked manifold.
Improper valve
clearance.
C l a s s I , I I , or
III leak.
Damaged or
cracked fuel
transfer pump.
Missing mounting
hardware.
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