Table 2-8. Mainshaft Fifth and Third Gear Fits and Tolerances

TM 9-2520-246-34-1

FRAME 4

NOTE

Readings must be within limits given in table 2-8. 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 internal gear (1) on synchronizer (2).

2. Measure fit of synchronizer (2) on mainshaft splines (3).

3. Measure fit of fifth gear (4) on sleeve (5).

4. Measure fit of sleeve bore (6) on mainshaft splines (3).

5. Measure fit of third gear (7) on mainshaft journal (8).

GO TO FRAME 5

Table 2-8. Mainshaft Fifth and Third Gear Fits and Tolerances

Size and Fit

of New Parts

Wear Limit

Index Number

(inches)

Item/Point of Measurement

(inches)

1 and 2

Fit of internal gear on

0.004 to 0.009

0.018

synchronizer

2 and 3

Fit of synchronizer on main-

0.0041 to 0.0076

0.010L

shaft splines

4 and 5

Fit of fifth gear on sleeve

0.004L to 0.005L

0.008L

6 and 3

Fit of sleeve bore on main-

0.000 to 0.001T

None

shaft splines

Fit of third gear on main-

7 and 8

0.0035L to 0.0045L

0.010L

shaft journal

2-54