TM-9-2520-246-34-1

TRANSMISSION MODEL 3053A; TRANSMISSION TRANSFERS MODEL T-136-21 AND MODEL T-136-27; POWER TAKEOFFS MODEL WN-7-28, MODEL WND-7-28 AND MODEL P-136-C

TECHNICAL MANUAL; MAINTENANCE, DIRECT SUPPORT AND GENERAL SUPPORT LEVEL

JANUARY 1981

TM-9-2520-246-34-1 - Page 333 of 418

TM 9-2520-246-34-1

FRAME 1

2-28. WEAR LIMIT INSPECTION. The following paragraphs give instructions for

checking the minimum and maximum wear limits for each subassembly to which a part

or parts may be worn before a new part is needed.

a.

Reverse Gear Shaft Assembly.

NOTE

Readings must be within limits given in table 2-58. If

readings are not within given limits, throw away part

and get a new one.

1.

Measure inside diameter of two bearings (1).

2.

Measure outside diameter of reverse gear shaft (2).

3.

Measure thickness of two new thrust washers (3).

4.

Measure inside diameter of reverse gear (4).

GO TO FRAME 2

Table 2-58. Reverse Gear Shaft Assembly Wear Limits

Index Number

1

2

3

4

Item/Point of Measurement

Bearing inside diameter

Shaft outside diameter

Thrust washer thickness

Gear inside diameter

Size and Fit

of New Parts

(inches)

1.2510 to 1.2520

1.2495 to 1.2505

0.061 to 0.063

1.252 to 1.253

Wear Limit

(inches)

0.001

0.003

None

None

2-313