Chrysler 1991 Service Manual Supplement page 121

14 - 24
FUEL SYSTEM
Fig. 11 Rotating Engine with Barring Tool
J9114-57
F i g . IS Timing Pin—Cylinder No. 1
CAUTION: During engine assembly by the manufac-
turer, the timing pin is positioned to correspond
with the compression stroke TDC position of cylin-
der number one. If the timing pin or gear housing is
removed,'the timing pin location will not be correct
when reinstalled.
(16) Locate TDC position (compression stroke) for
No. 1 cylinder by slowly rotating the engine with the
barring tool while lightly pushing in on the timing
pin. Stop when the timing pin engages the index hole
in the camshaft gear.
(17) Disengage the timing pin from the camshaft
gear.
Check the timing marks on the flange of the
injection pump (Fig. 14). Each pump and engine
have unique marks, i t is not possible to ex-
change pumps and use the same marks for
alignment.
J9114-58
Fig. 14 Injection Pump Timing Marks
The injection pump has a lockscrew. The lockscrew
is used to hold the injection pump shaft in place once
TDC has been located. New and rebuilt injection
pumps should be received with the shaft locked in
place by the lockscrew.
(18) Loosen the injection pump shaft lockscrew. It
is located below the injection pump mounting nut.
Remove washer from injection pump (Fig. 15). At-
tach washer to injection pump with wire tag for
use during installation.
(19) Tighten lockscrew.
(20) Use a T-bar puller to separate the gear from
the pump shaft. Use M8 X 1.24 mm screws to attach
T-bar to shaft. Pull the injection pump gear forward
until it separates from the injection pump shaft (Fig.
16). The injection pump gear cannot be removed
from the engine through the oil fill opening in
the timing case cover.
CAUTION: Do not allow the drive gear key-way to
drop into the gear housing cover when removing
the pump.
(21) Remove the injection pump mounting nuts.
(22) Remove injection pump. Clean gasket surfaces
on block and injection pump.