
Copyright Meritor, Inc., 2020
MM-0861 / Revised July 2020
Page 86
Printed in USA
7
Power Takeoff (PTO)
PTO Assembly
1. Rotate the transfer case in the repair stand so the output shaft to
the PTO is facing UPWARD.
CAUTION
THE CUPS MUST FIT SECURELY IN THE HOUSING BORES.
DAMAGE TO THE COMPONENTS CAN RESULT.
2. Assemble the PTO components by performing the following steps.
a.
Install the bearing cups into the PTO bearing cage housing.
This is an interference fi t. Freeze the bearing to −65°F
(−54°C) and position the two cups into the housing bores.
Figure 7.8.
If the cups are loose after the cup warms:
Replace the housing.
Figure 7.8
BEARING
CUP
4000222a
b. Preheat the fi rst bearing cone to 200°F (93°C). Support the
shaft and slide the heated cone in place onto the output
shaft. Figure 7.9.
Figure 7.9
4000223a
HOUSING
BEARING
CONE
SHAFT
c.
Install the shaft assembly into the housing. Slide the bearing
spacer onto the splined end of the shaft.
d. With the bearing spacer in position, the second bearing cone
can be heated to 200°F (93°C) and installed onto the shaft.
Figure 7.10.
Figure 7.10
4000224a
SPACER
BEARING
CONE
e.
Support the shaft and apply a press of 50-60 lbs (23-27
kg) to the bearing cone to set the bearing in place while the
bearing cools.
f.
Apply a light fi lm of SAE Grade full-synthetic 40W or 50W oil,
Meritor specifi cation O-81.
g. Assemble the shift fork to the clutch collar. Install this unit
into the bearing cage housing.
h. Install the push rod into the housing and through the shift
fork assembly.
i.
Apply 20-30 lbs (9-14 kg) of pressure to insert the piston
into the housing. Figure 7.11.
Figure 7.11
4000225a
CLUTCH
COLLAR
SHIFT
FORK
COVER
PLATE
PUSH ROD
PISTON
j.
Install the cover plate with the o-ring seal in place.
k.
Lightly lubricate all parts with SAE Grade full-synthetic 40W
or 50W oil, Meritor specifi cation O-81.
l.
Install the 1/4-20 screws using Loctite 242 sealant. Tighten
the screws to 10-14 lb-ft (14-19 N∙m).
Содержание MTC-4208X Series
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