Section IV. OPERATORS MAINTENANCE

TM 10-3930-609-12

compound, protective grease, etc.; prepare parts

connections is usually evidenced by too much

as required (oil seals, etc.); and for those parts

play (lash or lost motion). It includes illegibili-

requiring lubrication, apply the lubricant pre-

ty as applied to markings and data plates, and

scribed in the lubrication order.

printed matter.

d. General Cleaning. Any special cleaning in-

e. General Precautions in Cleaning.

structions required for specific mechanism or

(1) Dry-cleaning solvent and volatile min-

parts are contained in the pertinent section. Gen-

eral spirits are inflammable and should not be

eral cleaning instructions are shown in (1)

used near an open flame. Fire extinguishers

through (4) below.

should he provided when these materials are

(1) Use dry-cleaning solvent or volatile

used. Use only in well ventilated places.

mineral spirits to clean or wash grease or oil

(2) These cleaners evaporate quickly and

from all parts of the truck.

have a drying effect on the skin. If used without

(2) A solution of one part grease-cleaning

gloves, they may cause cracks in the skin and,

compound to four parts of dry-cleaning solvent

in the case of some individuals, a mild irritation

or volatile mineral spirits may be used for dis-

or inflammation.

solving grease and oil from chassis, mast and

other parts. Use cold water to rinse off any solu-

(3) Avoid getting petroleum products, such

tion which remains after cleaning.

as dry-cleaning solvent, volatile mineral spirits,

(3) After the parts are cleaned, rinse and

engine fuels, or lubricants on rubber parts as

dry them thoroughly. Apply a light grade of oil

they will deteriorate the rubber.

to all polished metal surfaces to prevent rusting.

(4) The use of diesel fuel oil, gasoline, or

(4) Before installing new parts, remove any

benzene (benzol) for cleaning is prohibited.

preservative materials, such as rust-preventive

Section IV. OPERATORS MAINTENANCE

tions and services outlined in the preventive

3-8. General

maintenance checks and services (table 3-1) and

Instructions in this section are published for the

the general services outlined in paragraph 3-7 c

information and guidance of the operator to

through 3-7 e. Refer to the applicable refer-

maintain the fork lift truck.

enced paragraphs for the corrective action re-

3-9. Operators Maintenance

quired and the performance of the specific main-

tenance service.

Operator maintenance is limited to the inspec-

Section V. TROUBLESHOOTING

ponents. Malfunctions which may occur are

3-10. General

listed in table 3-2. Each malfunction stated is

This section provides information useful in di-

followed by a list of probable causes of the

agnosing and correcting unsatisfactory operation

trouble. The corrective action recommended is

described opposite the probable cause.

or failure of the fork lift truck and its com-

Table 3-2. Troublerhooting

Probable cause

Corrective action

Malfunction

a. Charge or replace (para 3-46).

a. Dead battery.

Truck will not start or develop

b. Replace (para 3-51).

b. Fusetron blown.

full power.

c. Replace plug or receptacle (para 3-

c. Defective battery plug or receptacle.

51).

d. Clean or replace contacts (para

d. Contacts dirty, worn, or broken in

relay.

3-49).

e. Dirt in relay causing mechanical re-

e. Clean relay throroughly.

striction.

f. Replace accelerator master assembly

f. Snap switches malfunctioning in

(para 3-56).

accelerator master assembly.

3-4