TM-9-2520-246-34-1
TRANSMISSION MODEL 3053A; TRANSMISSION TRANSFERS MODEL T-136-21 AND MODEL T-136-27; POWER TAKEOFFS MODEL WN-7-28, MODEL WND-7-28 AND MODEL P-136-C
TECHNICAL MANUAL; MAINTENANCE, DIRECT SUPPORT AND GENERAL SUPPORT LEVEL
JANUARY 1981
TM-9-2520-246-34-1 - Page 76 of 418
TM 9-2520-246-34-1
c.
Countershaft Assembly.
FRAME 1
NOTE
Readings must be within limits given in table 2-10. If
readings are not within given limits, throw away part
1.
2.
3.
4.
5.
Measure
Measure
Measure
Measure
Measure
and get a new one.
inside diameter of bearing (1).
thickness of thrust washer (2)
drive gear bore (3).
fifth gear bore (4).
diameter of countershaft journal (5).
GO TO FRAME 2
Table 2-10.
Countershaft Drive and Fifth Gear Wear Limits
Index Number
1
2
3
4
5
Item/Point of Measurement
Bearing inside diameter
Thrust washer thickness
Drive gear bore
Fifth gear bore
Countershaft journal
diameter
Size and Fit
of New Parts
(inches)
1.7332 to 1.7337
0.0598
1.995 to 2.0005
2.2495 to 2.2505
1.7317 to 1.7322
Wear Limit
(inches)
0.001
0.007
None
None
0.002
2-56
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