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 200 of 418

TM 9-2520-246-34-1

FRAME 2

NOTE

Readings must be within limits given in table 2-20. If read-

ings are not within given limits, throw away part and get a

new one.

1.

Measure width of two countershaft keyways (1).

2.

Measure diameter of two countershaft gear surfaces (2).

3.

Measure diameter of two countershaft bearing surfaces (3).

GO TO FRAME 3

Index Number

1

2

3

Table 2-20.

Countershaft Wear Limits

Size and Fit

of New Parts

Item/Point of Measurement

(inches)

Countershaft keyway width

0.4990 to 0.5010

Countershaft gear surface diameter

2.3765 to 2.3775

Countershaft bearing surface diameter

2.0010 to 2.0015

Wear Limit

(inches)

0. 5028

2.3755

2.0005

2-180