Setion VI. REPAIR INSTRUCTIONS

SECTION VI

REPAIR INSTRUCTIONS

b. Apply a thin film of lubricating oil OE-10, Military

6-1. GENERAL.

Specification MIL-L-2104, to contact surfaces of bearing

and bearing seats before installation.

6-2. This section contains instructions for repairing the

major components and accessories of the truck. The

c. Carefully align bearing with bearing seat before

need for repair or replacement of parts is determined by

installing to avoid cocked or distorted bearings.

performing the inspections and checking the dimensions

specified. If the serviceability of a worn or damaged part

d. Carefully press bearings into their seats with an

cannot be restored by the repair procedures specified in

arbor press or appropriate removing and replacing tool.

the following text, install a new part. The general

Always apply pressure to the race which determines the

instructions are applicable to each' assembly being

fit when installing bearings.

repaired and/or reassembled unless otherwise specified

in the text. Where repair instruction for a part or unit is

e. If bearing must be tapped into its seat, use a

not covered, the part or unit is not subject to rework and

rawhide hammer or cushion the bearing with a block of

defective parts must be replaced with new ones. Where

wood to prevent damage.

related to reassembly, checks for clearances, backlash

and lubrication are included in the text.

6-6. REPAIRING DAMAGED THREADS. If slight

thread damage is found on any threaded surface, repair

6-3. LUBRICATION. Before installing or assembling

the threads with a tap or die of the correct size, as

internal metal parts, coat each part with a thin film of

follows:

lubricating oil OE-10, except where such application

would impair operation of the assembled unit. Such

a. Correct internal or tapped thread damage by

lubrication provides easier installation, reduces the

carefully turning the correct size tap into existing threads.

possibility of damage during installation, and assures

Carefully remove tap and inspect threads again to see if

immediate lubrication of the assembly when the

thread damage is obvious. If so, the damage is too

equipment is first started.

extensive to repair and the part must be discarded.

CAUTION

b. For damage to external threads, select a die of

correct size and carefully turn die onto existing threads.

Never apply OE-10 lubricating oil to rubber

Remove die and inspect threads. If damage is still

parts, electrical contacts, or internal parts of

obvious, the part must be discarded.

the hydraulic brake system.

6-7. PAINTING.

6-4. GASKET REPLACEMENT. Use new gaskets

throughout when reassembling. Soak cork gaskets in

6-8. Overhaul procedures will include painting as a

lubricating oil OE-10, or clean, fresh water for fifteen

necessary step in the completion of the procedure.

minutes before installing.

Apply approved gasket

Before the paint is applied, prepare the surface to be

cement to one side of paper gaskets, when required.

painted in accordance with paragraph 6-10.

6-5.

INSTALLATION OF BEARINGS.

Exercise

6-9.

SOLVENT HANDLING.

Solvents used for

extreme care when installing or removing ball, roller or

removing paint are generally toxic and volatile. Avoid

needle bearings. Failure to comply with installation and

inhaling the vapor and take precautions to keep such

removal procedures listed below could result in damaged

compounds from coming in contact with unprotected

bearings and consequent malfunctioning of an

areas of the face or body. Confine the use of such

assembled unit.

compounds to a well ventilated room, or apply out-of-

doors.

a. Make sure bearings, bearing seats, and tools are

thoroughly cleaned before attempting to install bearings.