I-Mark L4-1.8L 4FBI DSL (1982)
Shift Fork: Technical Service Bulletins
Manual Transmission - Shift Fork Update
SB85-05-003
May 31, 1985
TRANSMISSION
5-SPEED TRANSMISSION REPLACEMENT SHIFT FORKS
VEHICLES AFFECTED
All Isuzu I-Mark (PF), Impulse and P'UP models equipped with 5-speed manual transmission.
SERVICE INFORMATION
Replacement shift forks have been designed to increase strength in the shift arm spring pin area. Note:
the raised area in the shift fork on the right in the photograph below. There is a similar raised portion on the opposite side of the shift arm hole. When
using the new forks, use the new, longer double roll pin. DO NOT REUSE THE ORIGINAL SINGLE ROLL PIN WHEN USING REDESIGNED
SHIFT FORKS.
PARTS INFORMATION
The part numbers below correspond to the redesigned shift forks and double roll pin.
Top/3rd
Low/2nd
Double
Shift Fork
Shift Fork
Roll Pin
8-94173-694-0
8-94173-695-0
8-94171-541-0
Original and redesigned shift forks are interchangeable. However the new double roll pin must be used with the new forks. Again do not reuse the
original pin when replacing earlier style shift forks with the new, redesigned forks.
If the original shift forks are to be reused, a new single roll pin, P/N 9-09678-543-0, must be used.
SERVICE PROCEDURE
Follow the procedure as outlined in the appropriate workshop manual.
