TM-9-2320-273-34
TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1980
TM-9-2320-273-34 - Page 706 of 801
TM 9-2320-273-34
(8)
Using a knife blade, lift the loading seal (5) out of the
groove
in the front cover.
(9)
Removing the loading seal from the rear cover following the same procedure as described
in step
(8)
above.
(10)
Remove the retaining ring (12) from the shaft seal cavity in the front cover, Use internal
Truarc type snap ring pliers.
(11)
Clamp the front cover in a vise, flat side up, and drive the shaft seal (2) out of the cavity.
Use a screwdriver approximately 3/8 in. wide at the end held at a 45 degree angle.
b. Inspection.
(1)
Clean and dry all parts.
(2)
Inspect the drive gear for damaged splines.
(3)
Inspect both drive and driven gears at bearing points, sides and tooth faces for rough
surfaces and signs of excessive wear.
(4)
If damage or signs of excessive wear are noted, the gears must be replaced.
(5)
Inspect the inside diameter of the bushings in both covers for scoring. If the bushings are
scored or badly pitted, the cover must be replaced. (Bushings are not available as separate items. )
NOTE
As the motor is used, the inside diameter
of the bushings will change from-dull gray
to bronze in color. Ignore any variation
in color.
(6)
Check the inside gear pockets of the body for signs of excessive wear and scoring. If there
are grooves which would allow leakage past the ends of the gear teeth, the body must be replaced.
(7)
It is not necessary to inspect the seals or thrust plates for wear or damage, These parts
must be replaced each time the motor is disassembled.
c. Assembly.
(1)
Install the shaft seal (2) in the front cover. Using a seal driver (a socket with an outside
diameter of approximately 1-5/8 in. works well), press the shaft seal in until the snap ring groove is barely
exposed. Do not press further than is necessary as the seal will close off part of the bearing drain hole.
If this does occur, remove the seal and begin again.
(2)
Install the retaining ring (12) in the shaft seal cavity using truarc type snap ring pliers. Be
sure the retaining ring is completely seated in the groove.
(3)
Install the loading seals (5) in the seal groove in the front and rear covers. Hold the seal
in place over the groove and tap it into the groove with a plastic mallet. Do not use a steel hammer as it
will dent the face of the cover and cause damage to the seals.
(4)
Place the sealing rings (4) in the grooves in the front and rear covers.
(5)
Aline the scribed mark on the body with the scribed mark on the rear cover. Push down on
the body to engage the dowel pins (11). It may be necessary to tap each dowel alternately with a plastic
mallet until the body and the rear cover come almost together.
20-23
Back to Top
