Meritor MTC-4208X Series, Service Manual, Page: 73 / 120

Copyright Meritor, Inc., 2020 Printed in USA
MM-0861 / Revised July 2020
Page 69
6 Assembly
Final Assembly
1. Lubricate and install the o-ring into the rear cover push rod
journal. Use a light coat of lithium-based grease, Meritor
specifi cation O-668, prior to cover installation. Figure 6.30.
Figure 6.30
MTC-4208XL/XLEV & MTC-4210XL/XLEV
HIGH RANGE
PORT
4007107a
O-RINGS
LOW
RANGE
PORT
2. Apply Loctite 518 sealant to the case-to-cover fl ange. Apply a
1/8” (3 mm) bead of sealant around the entire fl ange between
each bolt hole making sure to encircle each hole.
3. Reinstall the rear cover over the front case. Guide the high and
low shift shaft and push rod through the cover as necessary.
Verify the cover is aligned with the locating dowel pins and
correctly seated.
4. If the capscrews are not pre-covered, apply Loctite 272 sealant to
the fi rst three threads of the cover-to-case capscrews.
5. Install all cover-to-case capscrews and fl at washers. Tighten the
capscrews to 60-75 lb-ft (81-102 N∙m).
6. Recheck the end play. Repeat the end play measurements on all
shafts. Repeat the adjustment procedures as required.
High and Low Shifter
1. Grease all o-ring seals. Use a light coat of lithium-based grease,
Meritor specifi cation O-668. Refer to Figure 6.31 for shifter
component arrangement.
Figure 6.31
MTC-4208XL/XLEV AND MTC-4210XL/XLEV
HIGH RANGE
PORT
4007107a
O-RINGS
LOW
RANGE
PORT
2. Install o-rings onto the inside diameter and outside diameter of
the inner piston. Install the inner shift piston and snap ring onto
the shift shaft. Figure 6.32.
Figure 6.32
4000193b
INNER
SHIFT
PISTON
3. Install o-rings onto the inside diameter and outside diameter of
the outer piston. Install the outer shift piston with the o-ring end
fi rst to ensure the piston is facing the correct direction.