Table 2-9. Mainshaft Second and First-Reverse Gear Fits and Tolerances

TM 9-2520-246-34-1

FRAME 5

NOTE

Readings must be within limits given in table 2-9. 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 synchronizer (1) on sleeve splines (2).

Measure fit of sleeve bore (3) on mainshaft journal (4).

Measure fit of second gear (5) on mainshaft journal (6).

Measure fit of first-reverse gear (7) on mainshaft splines (8).

Measure fit of bearing (9) on mainshaft splines (10).

END OF TASK

Table 2-9.

Mainshaft Second and First-Reverse Gear Fits and Tolerances

Size and Fit

Wear Limit

of New Parts

(inches)

Index Number

Item/Point of Measurement

1 and 2

0.004L to 0.007L

Fit of synchronizer on

0.0106L

sleeve splines

0.003T to 0.018T

Fit of sleeve bore on main-

3 and 4

None

shaft journal

Fit of second gear on main-

0.010L

0.0035L to 0.0045L

5 and 6

shaft journal

Fit of first-reverse gear

7 and 8

0.016L

0.006L to 0.012L

on mainshaft splines

0.0002L to 0.0002T

None

Fit of bearing on mainshaft

9 and 10

splines

2-55