Latest Chain Cover And Gasket Change (No Reverse) - ATSG AXOD Update Handbook

COMPLAINT: After overhaul,vehicles built after 1999, equipped with the AX4S or AX4N transmissions
may exhibit a "no engagement" in Reverse.
CAUSE:
The cause may be, that the Previous Design Channel Plate Gasket, was used on a Late
Design case as shown in Figure 103. When this happens, Reverse apply pressure will be
exhausted back into the case because of the gasket hanging over the case casting.
CORRECTION: AX4S-Refer to Figure 103 to identify the correct Channel Plate Gasket for the application of
vehicle you are working on.
AX4N-Refer to Figure 104 to identify the correct Channel Plate Gasket for the application of
vehicle you are working on.
AXODE/AX4S "PREVIOUS"
built "before" August of 1999
LATE CASE
Technical Service Information
FORD AX4S/AX4N
NO REVERSE
"AX4S" CHANNEL PLATE GASKET I.D.
DESIGN CHANNEL
PLATE GASKET
REVERSE
PASSAGE
AUTOMATIC TRANSMISSION SERVICE GROUP
EARLY CHANNEL
PLATE GASKET
PLATE GASKET USED ON A LATE
REVERSE APPLY CIRCUIT TO AN EXHAUST
Figure 103
119
AXODE/AX4S "LATE"
DESIGN CHANNEL
PLATE GASKET
built "after" August of 1999
A PREVIOUS DESIGN CHANNEL
DESIGN CASE WILL OPEN THE
Copyright © 2002 ATSG
REVERSE
PASSAGE