Table 2-12. Countershaft Assembly Fits and Tolerances

TM 9-2520-246-34-1

FRAME 3

NOTE

Readings must be within limits given in table 2-12.

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.

Measure fit of drive gear (1) on countershaft journal (2).

Measure fit of fifth gear (3) on countershaft journal (4).

Measure fit of bearing (5) on countershaft journal (6).

Measure fit of bearing (7) on countershaft journal (8).

END OF TASK

Table 2-12.

Countershaft Assembly Fits and Tolerances

Size and Fit

of New Parts

Wear Limit

(inches)

Index Number

Item/Point of Measurement

0.0005T to 0.0025T

None

Fit of drive gear on counter-

1 and 2

shaft journal

3 and 4

None

0.0005T to 0.0025T

Fit of fifth gear on counter-

shaft journal

0.0005L to 0.0015L

Fit of bearing on counter-

None

5 and 6

shaft journal

Fit of bearing on counter-

0.0002L to 0.0002T

7 and 8

None

shaft journal

2-58