Carrier Assembly - Meritor 18X Maintenance Manual

2 Maintenance
3. Calculating the Pinion Shim Pack Value.
Original Ring Gear & Pinion with REFERENCE NUMBER
NOT AVAILABLE and Shim Pack with REFERENCE NUMBER
AVAILABLE OR NOT AVAILABLE
If you can't find the
same shim that you measured in Step 1. In case the shim pack
used is not available it is possible to use the average of
Manufacturer's Adjusted Shim Pack value which is 0,6 mm for
the 18X carrier. Check tooth contact pattern and adjust the shim
pack thickness as necessary to achieve the correct contact
pattern.

Carrier Assembly

If a new ring gear and drive pinion are to be installed,the correct
thickness of shim pack required between the inner bearing cup
and the carrier must be determined. Refer to Section 2, Ring
Gear & Pinion Adjustment. When the necessary calculations
have been completed and the correct shim pack has been
identified continue with the carrier assembly detailed below.
CAUTION:
Do not attempt to assemble the carrier assembly before
establishing the correct shim package requirements.
1. Where applicable, use a suitable press and correct size sleeve,
to install the dust shield (deflector) onto the companion flange
(Fig.2.8).
IMPORTANT:
The spigot bearing has a larger radius on one side. This
larger radius must be positioned facing the head of the
pinion (Fig.2.9). The bearing part number should face
towards the operator.
2. Using a suitable service tool, press the spigot bearing on the
nose of the drive pinion until the bearing is flat against the gear
head (Fig.2.10). Ensure the tool locates correctly on the
bearing, applying force to the inner ring only.
18 Meritor Differential Carrier 18X
number or it is unreadable, re-install the
Fig. 2.8
Fig. 2.9
Fig. 2.10