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 223 of 418

TM 9-2520-246-34-1

FRAME 2

NOTE

Readings must be within limits given in table 2-42. The

letter L indicates a loose fit and the letter T indicates a

tight fit. If readings are not within given limits, throw

away part and get a new one.

1.

Measure fit of two gears (1) on countershaft (2) in two places.

2.

Measure fit of two keys (3) in two countershaft keyways (4).

3.

Measure fit of two keys (3) in two gear keyways (5).

END OF TASK

Index Number

1 and 2

3 and 4

3 and 5

Table 2-42.

Countershaft Assembly Fits and Tolerances

Size and Fit

of New Parts

Item/Point of Measurement

(inches)

Fit of gear on countershaft

0.0005 to 0.0025T

Fit of key in shaft keyway

0.000T to 0.0032L

Fit of key in gear keyway

0.0028 to 0.0004L

Wear Limit

(inches)

O.OO1OL

0.0052L

0.0024L

2-203