3 - 4 3 . FUEL INJECTOR PUMP DRIVE SHAFT REPLACEMENT (Cont).
l Drive shaft (1) is retained by retaining clip on 1984 model trucks. Drive
shaft is retained by spiral-shaped retaining ring (4) on 1985-87 model
l Drive shaft (1) and retaining clip on 1984 model trucks are not
provisioned, If drive shaft is removed from 1984 model truck, 1985-87
model truck drive shaft assembly must be used for installation.
Rotate drive shaft (1) until one of raised portions of retaining clip is visible through top of fuel
injector pump housing (5). Using long, thin, hook-shaped tool, hook retaining ring and pull
slightly to rear. Using needle nose pliers, remove and discard retaining clip.
Rotate drive shaft (1) until dowel pin (6) is on top. Pull drive shaft from fuel injector pump
housing (5) using rotating motion, Remove and discard dowel pin if damaged. Discard 1984
model truck drive shaft.
Ensure that any pieces of retaining ring (4) that have broken off inside fuel
injector pump housing (5) are removed before installation. Failure to
follow this caution may result in damage to fuel injector pump
Remove and discard retaining ring (4) from drive shaft (1).
Remove and discard 2 black seals (2) and red seal (3).