TM-9-2320-272-23-3

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 3 OF 5

SEPTEMBER 2012

TM-9-2320-272-23-3 - Page 1029 of 1469

REPAIR - Continued

9.

Using abrasive cloth, remove rust from seal surface of spindle (Figure 3, Item 2).

10.

Disconnect air line (Figure 3, Item 1) from steering knuckle (Figure 3, Item 3).

WARNING

Eyeshields must be worn when cleaning with compressed air. Compressed air source will

not exceed 30 psi (207 kPa). Failure to comply may result in injury or death to personnel.

11.

Using external air source, blow dirt and debris from surface of spindle (Figure 3, Item 2) by forcing air through

steering knuckle (Figure 3, Item 3).

WARNING

Solvent cleaning compound is flammable and toxic. Do not use near an open flame and

always have a fire extinguisher nearby when solvents are used. Use only in well-ventilated

places, wear protective clothing, and dispose of cleaning rags in approved container. Failure

to comply may result in damage to equipment, injury, or death to personnel.

12.

Clean entire surface of spindle (Figure 3, Item 2) with cleaning compound.

13.

Connect air line (Figure 3, Item 1) to steering knuckle (Figure 3, Item 3).

CAUTION

Avoid filing too deeply into seal surface of spindle. Excessive filing may result in permanent

damage to spindle.

14.

Remove deep scratches by carefully filing seal surface of spindle (Figure 3, Item 2) in a circular motion.

NOTE

It is unnecessary to remove the circular depression of a groove, only the raised portion or lip.

15.

Using abrasive cloth, remove light surface scratches from seal surface of spindle (Figure 3, Item 2).

TM 9-2320-272-23-3

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