NMC-WOLLARD 2021Truax Blvd., Eau Claire, WI 54703, Phone (715) 835-3151, Fax (715) 835-6625
M100 Tow Tractor Manual No. 46052
DECEMBER 15, 2013
PAGE 180
CHAPTER 5 MANUFACTURER’S INFORMATION
GM 4L70 TRANSMISSION
Propeller Shaft Main Flange Yoke Oil Seal Replacement
Tools Required
J 21426 Extension Housing Seal
Installer
J 36850 Transjel Lubricant
Removal Procedure
1. Raise and suitably support the vehicle
as required. Refer to manufacturer’s
instructions regarding Lifting and
Jacking the Vehicle.
2. Place a drain pan under the vehicle.
3. Remove the propeller shaft. Refer to
your vehicle manufacturer’s instructions
regarding Propeller Shaft Replacement
4. Remove the Case Extension Assembly
(7). Refer to Case Extension Assembly
Seal Replacement.
5. Remove the speedometer reluctor
wheel (4) by carefully using a gear puller
to remove it from the main flange shaft.
6.
Remove the main flange snap
ring (5) and bearing assembly
(6).
7. Remove the main flange (12)
from the extension housing.
8. Remove the case extension
housing rear oil seal (11). Use a
flat-bladed tool and carefully pry
the seal from the housing.
9. Inspect the case extension
housing bushing for damage.
Replace the extension bushing or
housing as necessary.
Installation Procedure
1. Lubricate the inside diameter of
the new seal (11) with J 36850
Transjel lubricant.
2. Use the J 21426 extension
housing seal installer with a soft
faced mallet to install the seal.
3. Install the seal (11) to the
extension housing (7). Metal
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