TM-9-2520-246-34
TRANSMISSION MODEL 3052, NSN 2520-00-347-4520
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT; MAINTENANCE MANUAL
MAY 1978
TM-9-2520-246-34 - Page 86 of 153
Figure 4-36. Rear Output
Exploded
Shaft Disassembly —
View.
37.) Place support bars beneath
and press idler shaft high-speed
TM 9-2520-246-34
the high-speed gear,
gear and rear bearing
from the shaft. Remove high-speed gear woodruff key.
(3) Place the idler shaft assembly in an arbor
press with low-speed gear and front bearing up. (See
fig. 4-37.) Place support bars beneath the low-speed
gear. Press idler shaft low-speed gear and front
bearing from the idler shaft. Remove the low-speed
gear woodruff key from the idler shaft.
c.
4-23. Disassembly and Assembly of
Subassemblies.
a. Rear Output Shaft Assembly.
NOTE
Before pressing the gear and bearings on
the rear shaft, coat the shaft with white
lead pigment, Fed Spec TT-W-261C. When
assembling the rear output shaft assembly,
install parts separately so as not to damage
the front and rear bearings.
(1) Place rear output shaft assembly in an arbor
press with front tapered roller bearing cone (fig. 4-36)
up. Place support bars beneath the cone. Press the
cone from the shaft.
(2) Place the rear output shaft assembly in an
arbor press with the rear output shaft gear up. (See
fig. 4-36.) Place support bars beneath the rear output
shaft gear and press the gear free of the shaft.
Removal of the rear output shaft gear in this manner
will also push the rear output shaft rear bearing from
the shaft. Remove the woodruff key from the shaft.
b. Idler Shaft Assembly.
NOTE
Before pressing the gears and bearings on
the idler shaft, coat the shaft with white
lead pigment, Fed Spec TT-W-261C. When
assembling the idler shaft assembly, install
parts separately so as not to damage front
and rear bearings. Discard the old capscrew
locking plate and replace it with a new one.
(1) Using a suitable tool, bend the rear bearing
and gear locking plate ears away from capscrews and
remove the two capscrews, locking plate, and the rear
bearing gear-lock. (See fig. 4-37.)
(2) Place the idler shaft assembly in a press with
the high speed gear and rear bearing up. (See fig. 4-
Figure 4-37. Idler Shaft Disassembly —
Exploded View.
Input Shaft Assembly.
NOTE
Visually inspect synchronizer for broken,
nicked, or worn gear teeth. If any of these
conditions prevail, the synchronizer must
be replaced. For replacement, use
synchronizer part number 7346755.
NOTE
Before pressing the bearing into the gears,
and the gears on the input shaft, coat all
installation surfaces with white lead
pigment, Fed Spec TT-W-261C.
(1) Remove the shifter shaft fork from the
synchronizer assembly. (See fig. 4-38.)
(2) Remove the input shaft rear bearing snapring
from the end of the input shaft. (See fig. 4-38.) Place
the input shaft assembly in an arbor press with the
rear bearing and high-speed gear up. Install a suitable
puller around the input shaft high-speed gear and
press the high-speed gear free from the shaft. Removal
of high-speed gear in this manner will push the gear
bearing spacer; gear bearing, thrust washer, and rear
bearing from the input shaft.
4-25
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