
Copyright Meritor, Inc., 2020
Printed in USA
MM-0861 / Revised July 2020
Page 85
7
Power Takeoff (PTO)
Test the Transfer Case with the PTO
Assembly Installed
CAUTION
THE AIR PRESSURE MUST NOT EXCEED 10 PSI (0.69 BAR).
DAMAGE TO COMPONENTS CAN RESULT.
1. Connect a regulated air pressure line to the air transfer case
breather. Figure 7.7.
Figure 7.7
REAR OUTPUT
POSITION
PTO
LOCATION
4004233h
BREATHER
REAR COVER
2. Verify the air pressure line fi ttings are installed correctly.
3. With the correct fi tting installed into the breather port, apply a
pressure of 8-10 psi (0.55-0.69 bar).
4. Turn the air supply OFF. Check the pressure.
If the pressure decreases by more than 2 psi (0.14 bar) in
10 minutes:
Check for external leaks at the fi ttings. Correct any leaks. Recheck
the pressure.
5. Install the breather.
PTO Disassembly
Once the PTO has been removed according to the procedure in Section
4, use the following procedure for disassembly.
WARNING
TAKE CARE WHEN REMOVING THE SPRING-LOADED PTO
CAP. SERIOUS PERSONAL INJURY AND DAMAGE TO COM-
PONENTS CAN RESULT.
1. Carefully remove the spring-loaded PTO cap by turning each bolt
a few turns at a time until all the bolts can be removed at once.
2. Remove the capscrews from the cover of the declutch piston.
Remove the cover.
3. Remove the PTO piston push rod and the return spring. Remove
the o-ring seal from the PTO piston.
4. Remove the o-ring seal on the cover. Discard the seal. Remove
the shift fork and clutch collar.
5. Remove the oil and dirt seals from the bearing cage assembly.
Discard the seals.
6. Press the shaft out of the bearing cage. Remove the bearing
assembly.
7. Remove the bearing cups as a unit with the bearing spacer by
pressing the cups out of the bearing cage. NEVER separate these
parts. They are a matched set.
Summary of Contents for MTC-4208X Series
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