Copyright Meritor, Inc., 2022
MM-0861 / Revised 06-22
Page 67
Printed in USA
7 Assembly
6. Install the yoke, washer, and locknut. Tighten the lock nut to
700-900 lb-ft (949-1220 Nm).
7. Use a dial indicator to check the end play on the rear upper
output shaft. Refer to "End Play Check and Adjustment" on
page 67. The end play must be 0.002-0.004” (0.051-
0.102 mm). To adjust the end play, remove the rear output
shaft and outer bearing cone and add or remove shims, as
necessary, to achieve the correct end play.
NOTE:
The end play for the MTC-4213X upper rear output
can be completed before installing the rear case half onto the
front case half.
End Play Check and Adjustment
Shim Pack Starting Thickness Requirements
End play must be checked and adjusted at all shaft positions before
final assembly.
NOTE:
Reuse the existing yoke nuts during end play preliminary
measurements. Install new yoke nuts only on final assembly.
NOTE:
Unless otherwise noted, all 29 fasteners must be installed
and tightened to the specified torque prior to checking end plays.
Start with the following shim pack thicknesses to begin this
process.
• MTC-4213X input shaft starting thickness must be equal to
or greater than 0.056”.
• MTC-4213X upper output starting thickness is 0.039”.
• MTC-4213X begins by setting the upper rear output end
play first with a starting shim pack size of 0.039”. Set the
end play to 0.002-0.004” (0.051-0.102 mm). After setting
the MTC-4213X upper rear output, rotate the transfer case
and set the input shaft end play to 0.002-0.004” (0.051-
0.102 mm). All other MTC-4213X shaft end plays are
0.001-0.005” (0.025-0.127 mm).
• MTC-4208X/XP/XL/XLEV/XLEC and MTC-4210X/XP/XL/
XLEV/XLEC input shaft initial starting shim pack thickness
is 0.036”.
• MTC-4208XP and MTC-4210XP upper rear output yoke
does not require an end play check.
For all other locations, determine the starting shim pack size by
cleaning and measuring the thickness of shims removed from the
respective bearing cup location. Use new shims to obtain the same
thickness as the original shim pack. This will be the starting shim
pack thickness to use when setting the respective shaft’s end play.
MTC-4208X/XL/XP/XLEV/XLEC and MTC-4210X/XL/XP/
XLEV/XLEC Lower Rear Output Shaft End Play
Determine the rear output shaft bearing end play before final
assembly. Seals should not be installed until the end plays are set.
1. Install the rear output shaft yoke. Temporarily tighten the yoke
nut to 700-900 lb-ft (949-1220 Nm).
2. Rotate the output shaft several times to seat the bearings.
3. Use a dial indicator to check output shaft bearing end play.
Center the dial indicator over the shaft.
NOTE:
For accuracy, place a ball bearing into the recess found
on the end of the shaft, then place the tip of the dial indicator
on top of the ball bearing. Figure 7.22 and Figure 7.23.
MTC-4213X REAR OUTPUT YOKE SHOWN
4000209a
Figure 7.22
4012328a
BALL BEARING
RECESSED AREA
SHAFT
Figure 7.23
