Subsection 13 (GEARBOX AND 4X4 COUPLING UNIT (WITH EXTERNAL SWITCHES))
Replace oil seal if brittle, hard or damaged.
Replace O-rings if brittle, hard or damaged.
Check splines of coupling sleeve for wear or other
damages.
vmr2006-022-030_a
1. Inspect splines
Measure the coupling sleeve groove width.
vmr2006-022-031_a
A. Groove width
COUPLING SLEEVE GROOVE WIDTH
NEW
5.25 mm to 5.35 mm
(.207 in to .211 in)
SERVICE LIMIT
5.50 mm (.217 in)
Check coupling fork claw thickness.
vmr2006-022-032_a
1. Coupling fork
2. Micrometer
COUPLING FORK CLAW THICKNESS
NEW
4.95 mm to 5.05 mm
(.195 in to .199 in)
SERVICE LIMIT
4.80 mm (.189 in)
Clean housing split surface and especially the
bearing areas from metal particles or other con-
tamination.
Installing the Output Shaft and
Coupling Mechanism
Reverse the removal procedure. However, pay at-
tention to the following.
Install thrust washer, bearing, O-ring and coupling
sleeve onto the output shaft.
Install distance ring, thrust washer and ball bear-
ing.
NOTE:
O-ring and distance sleeve are not in-
stalled at this time.
Place the output shaft into the center housing.
Use soft hammer to put bearing exactly in place
against center housing.
vmr2012-019-011_a
1. Soft hammer
Clean the bearing cover location then attach bear-
ing cover with oil seal to the housing.
Temporarily install the right housing with the four
(4) M8 TORX screws beside bearing seats.
NOTE:
Prior to tightening the TORX screws, tap
on the gear end of output shaft with a soft ham-
mer to take up all gear free play.
Verify output shaft backlash. Refer to
OUTPUT
SHAFT BACKLASH PROCEDURE
in this subsec-
tion. Adjust as required.
16
vmr2016-422