TM-9-2320-273-34

TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

DECEMBER 1980

TM-9-2320-273-34 - Page 428 of 801

TM 9-2320-273-34

10-4. Cleaning.

a.

Ground or Polished Surface Parts.

WARNIN G

Exercise care to avoid skin rashes, fire

hazards, and inhalation of vapors when

using solvent-type cleaners.

Do not use gasoline. Do not clean these

parts in a hot solution tank or with water

and alkaline solutions, such as sodium

hydroxide, orthosilicates, or phosphates.

Do not steam clean assembled drive units

after they have been removed from the

housing. When this method of cleaning

is used, water is trapped in the cored

passage of the castings and in the close

clearances between parts as well as on the

parts. This can lead to corrosion (rust)

of critical parts of the assembly and the

possibility of circulating rust particles in

the lubricant. Premature failure of bear-

ings, gears and other parts can be caused

by this practice, Assembled drive units

cannot be properly cleaned by steam

cleaning, dipping or slushing. Complete

drive unit disassembly is a necessary

requisite to thorough cleaning.

(1)

parts having ground and polished surfaces, such as gears, bearings, shafts and collars,

should be cleaned in SD-2 dry cleaning solvent (item 12, App A).

(2)

clean all mating surfaces where fiber or liquid gasket material is used. It may be necessary

to use a scraper to completely remove gasket materials. Be careful not to damage mating surfaces.

b.

Rough Parts.

WARNING

Exercise care to avoid skin rashes and in-

halation of vapors when using alkali cleaners.

10-20

CAUTIO N