Table 1-2. Transmission Forward Speed Backlash Wear Limits

TM 9-2520-246-34-1

FRAME 2

NOTE

Readings must be within limits given in table 2-1. The

letter L indicates a loose fit. If readings are not within

given limits, throw away both gears and get new ones.

Some gears on the countershaft cannot be taken off. If

these gears are damaged, throw away countershaft and

get a new one.

Measure backlash between input shaft gear (1) and countershaft drive gear (2)

Measure backlash between fifth gear (3) and countershaft fifth gear (4).

Measure backlash between third gear (5) and countershaft third gear (6).

Measure backlash between second gear (7) and countershaft second-reverse

gear (8) .

GO TO FRAME 3

TA 087802

Transmission Forward Speed Backlash Wear Limits

Table 2-1.

Size and Fit

of New Parts

Wear Limit

Index Number

Item /Point of Measurement

(inches)

Input shaft gear to counter-

1 and 2

0.016

0.006 to 0.012

shaft gear

0.006L to 0.012L

Fifth gear to countershaft

3 and 4

0.019L

fifth gear

0.006L to 0.012L

Third gear to countershaft

5 and 6

0.016L

third gear

Second gear to countershaft

7 and 8

0.006L to 0.012L

0.019L

second-reverse idler gear

2-4