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TM 10-3930-671-24
SECTION 4
PARTS INSPECTION
A.
GENERAL INSPECTION
Dirt is the greatest enemy of the fuel injection pump
Keep the work area clean.
Parts must be washed in a suitable solvent and then
placed in a clean pan containing fresh fuel or calibrating
oil.
B.
DETAILED INSPECTION
Examine all parts in accordance with instructions which
follow: Discard flexible retaining ring, all O-rings, seals
and gaskets. Replace with appropriate Roosa Master
gasket kits. Examine all springs for fretting, wear,
distortion or breakage. Clean and carefully check all
bores, grooves and seal seats for damage or wear of any
kind.
Replace damaged or worn parts as necessary.
Housing & Housing
X
X
X
X X
X
X
See Supplementary Inspection 1
Drive
Drive Shaft
X
X
X
X X
X
X
Hydraulic Head Hydraulic Head
X
X
X
X X
X
& Rotor
Vent Wire Assembly
X
X
See Supplementary Inspection 2
Discharge Fittings
X
X
X
X X
X
Inside diameter of discharge fittings,
sealing area for wear, nick & scores
Distributor Rotor
X
X
X X
X
X
X
See Supplementary Inspection 3
Delivery Valve
X
X
X
X
X
X
See Supplementary Inspection 4
Plungers
X
X
X
X
X
See Supplementary Inspection 5
Cam Rollers Shoes
X
X
X
X X
X
See Supplementary Inspection 6
Leaf Spring(s) & Screw(s)
X
X
X
X
X
See Supplementary Inspection 7
Cam
X
X
X
X
X
X
See Supplementary Inspection 8
Governor Weight Retainer X
X
X
X X
Where weights pivot in retainer rocket,
also E ring area for wear, loose pins
Governor Weights
X
X
X
X X
See Supplementary Inspection 9
Governor Thrust Washer
X
X
X
X X
X
Contact areas for excessive wear
Governor Thrust Sleeve
X
X
X
X X
Points of contact with governor arm for
excessive wear
Transfer
End Cap
X
X
X
X
Pump
Inlet Screen
X
X
X
Screen and soldered area for breakage
End Plate Adi. Plug
X
X
Tighten es in regulator, plugged orifice,
loose plate
Regulating Piston
X
X
X
X X
Regulator
X
X
X
X X
X
Inside diameter of regulator
Blades
X
X
X
X X
See Supplementary Inspection 10
Liner
X
X
X
X
Inside diameter in high-pressure area for
wear
Rotor Retainers
X
X
X
X
Governor
Pivot Shaft
X
X
X
X
X
Chipped or worn knife edge
Arm
X
X
X
X
X
X
Points of contact with sleeve & pivot
alt for extreme wear
Metering Valve
X
X
X
X X
X
Contact area body for excessive wear
Metering Valve Arm
X
X
X
X
X
X
Inspect pin for wear or looseness
Linkage
Linkage Hook
X
X
X
X X
X
X
X
Metering valve pin hole
Advance
Piston
X
X
X
X
X
Cam Advance Screw
X
X
X
X X
X
X
Plugs
X
X
X
X X
X
X
X
Bore for excessive wear
Head Locating Screw
X
X
X X
X
Orifice
F-232
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