Table 3-2. Repair and Replacement Standard Points of Measurement for Transmission Mainshaft Assembly

TM 9-2520-246-34

Figure 3-48. Repair and Replacement Standard Points of Measurement

for Transmission Mainshaft Assembly.

Table 3-2. Repair and Replacement Standard Points of Measurement for Transmission Mainshaft Assembly

Fig.

Ref

Size and Fit

Point of Measurement

Wear Limits

Letter

of New Parts

No.

Fit of synchronizer and shaft splines

.004L-.007L

.010L

3-48

A-M

.150-.152

Thickness of thrust washer

3-48

.010

Fifth gear to countershaft

3-48

fifth gear (backlash)

.006L-.012L

.019L

3-49

Inside dia of fifth gear

2.1250-2.1255

3-48

.001

Outside dia of sleeve

2.1205-2.1210

.001

3-48

Fit of fifth gear on sleeve

0.004L-0.005L

D-E

.008L

3-48

Third gear to countershaft

3-48

third gear (backlash)

.006L-.012L

.016L

3-49

1.9680-1.9685

Inside dia of third gear

.004

3-48

Fit of synchronizer and sleeve splines

H-J

.004L-.007L

.0106L

3-48

Second gear to countershaft

3-48

second-reverse idler gear (backlash)

.006L-.012L

3-49

.019L

2.0780-2.0785

Inside diameter of second gear

3-48

(*)

1.7500-1.7505

Dia of shaft at journal

3-48

(*)

1.9640-1.9645

Dia of shaft journal

.004

3-48

Fit of third gear on shaft

0.0035L-0.0045L

.010L

G-N

3-48

Diameter of shaft journal

2.0740-2.0745

3-48

(*)

0.0035L-0.0045L

Fit of second gear on shaft

.010L

L-P

3-48

Q-R

Fit of first-reverse gear on shaft

3-48

splines

.006L-.012L

.016L

1.5748

Inside dia of bearing

3-48

(*)

First-reverse gear to

3-48

countershaft first gear (backlash)

.008L-.014L

.019L

3-49

First-reverse gear to reverse

3-48

idler gear (backlash)

.008L-.014L

.019L

3-50

Dia of shaft journal

1.5746-1.5750

3-48

(*)

Fit of bearing on shaft

0.0002L-0.0002T

S-U

3-48

(*)

1.9688-1.9698

Dia of shaft journal

3-48

(*)

Dia of shaft journal

1.0908-1.0913

.001

3-48

1.9680-1.9685

Inside dia of synchronizer sleeve

3-48

(*)

X-V

Fit of synchronizer sleeve on shaft

0.003T-0.0018T

3-48

(*)

1.7495-1.750

Inside dia of sleeve

3-48

(*)

Fit of sleeve on shaft

0.000-0.001T

3-48

M-Y

(*)

Fit of main shaft in

3-48

F-E

bearing rollers, and input shaft

0.00261L-0.0044L

3-47

.0059L

3-23