Dodge D250 1990 Service Manual page 450

Fuel System
DODGE Turbo Diesel
Fuel System Replacement Procedures
Page 14-31
Note; The shaft of a new or reconditioned pump is locked so
the key aligns with the drive gear keyway when Cylinder ^ m
Number 1 is at TDC on the compression stroke.
Install the pump. Make sure the key does not fall into the gear
housing.
Caution: If the alignment key drops into the gear train it
must be removed. mmA
Finger tighten the three mounting nuts. The pump must be free 0£k f
to move in the slots. '
22mm
Caution: Do not overtighten. This is not the final torque.
Install the pump drive shaft nut and spring washer. The pump
will rotate slightly because of gear helix and clearance. This is
acceptable providing the pump is free to move on the flange
slots and the crankshaft does not move.
Tighten the drive shaft nut.
Torque Value: 15 to 20 N-m [11 to 15 ft-lbs]
13mm
If Installing the original pump, rotate the pump to align the
timing marks.
Tighten the flange mounting nuts.
Torque Value: 24 N-m [18 ft-lbs]