TM 5-3805-281-24-2
Fuel System
INSTALL FUEL INJECTION PUMP
IMPORTANT: Nippondenso "A" injection pumps must
be installed straight (upright) on the
engine to assure correct alignment of
fuel shutoff solenoid linkage.
Misaligned linkage will bind and not
allow shutoff solenoid to operate
properly, if pump is incorrectly
installed. Pump is correctly aligned if
linkage can be moved freely back and
forth.
Preparing Injection Pump for Installation
NOTE: Place injection pump drive gear in timing gear
A--Pointer
housing (if previously removed) with chamfered
B--Drive Hub
side of gear toward injection pump. Chamfer is at
C--O-Ring
outer edge of bore for easier installation of gear to
D--Bearing Plate
E--JDG886 Timing Pin
pump drive hub.
1. If engine was rotated after injection pump was
removed, rotate flywheel until timing pin enters flywheel
at No. 1 cylinder's "TDC" compression stroke.
NOTE: When No.1 cylinder is at "TDC" compression
stroke, intake and exhaust valves for No. 1
cylinder will be closed and both rocker arms will
be loose.
2. Rotate injection pump drive hub until marks on drive
hub (B) and pointer (A) are aligned.
NOTE: It may be necessary to rotate pump hub slightly to
get timing pin (E) to enter bearing plate.
3. Thread JDG886 Timing Pin (E) into drive hub, as
shown, and tighten until it bottoms against bearing
plate (D).
4. Install a new O-ring (C) on pump mounting hub. Lightly
lubricate O-ring with AR54749 Soap Lubricant to aid in
pump installation and prevent O-ring damage.
Continued on next page
RG,RG34710,1300
1923OCT971/5
