Assembly-continued -706880974

TM 5-4210-233-14&P-1

5-43. FORWARD TANDEM AXLE AND DRIVE UNIT-Continued

Example

Inch

Thickness of Piece No.1

0.504

12.800

Thickness of Piece No. 2

0.506

12.852

Total Thickness

1.010

25.652

Divide By Two (2) To Get

Average Thickness

0.505

12.826

Add 0.004 inch (0.100 mm)

To Get Thickness of Spacer

0.509

12.926

(17)

Use a press and sleeve to completely install the helical gear (77) on the drive pinion (73). Sleeve

must fit inside of pinion bore. Press the gear (77) on drive pinion (73) unfit gear contacts spacer.

(18)

Install the correct size spacer (74) as determined above on shaft of pinion on top of helical gear

(79). Install the outer bearing cone (76) on drive pinion shaft (73).

(19)

Use a press to apply two tons of pressure on bearing cone (76) to press cone on shaft. Move the

differential carrier (9) in both directions to pivot carrier on drive pinion white installing cone to make

sure cone is correctly installed. Release the pressure, remove wood block and install carrier in the

stand.

(20)

Measure the outside diameter of the washer (72) and install washeron drive pinion (73) and secure

with nut (71). Tighten nut (71) to a torque' of 1200 to 1500 lb ft (1625 to 2035 N m).

(21)

Check preload of bearings.

(a) Wind a cord around the washer (72) under the nut (71) on the drive pinion (73). Attach a spring

scale to cord.

(b) Putt the spring scale in a horizontal direction white checking the reading on the spring scale.

Divide outside diameter of washer (72) by two to obtain radius dimension. Multiply radius by

reading on spring scale to get preload of bearings.

5-304