Section I. REPAIR PARTS, SPECIAL TOOLS, AND EQUIPMENT

TM 10-3930-611-35

CHAPTER 2

GENERAL MAINTENANCE INSTRUCTIONS

Section I. REPAIR PARTS, SPECIAL TOOLS, AND EQUIPMENT

2-1. Special Tools and Equipment

Direct Support, General Support, and Depot

Maintenance Parts are listed in TM 10-3930-611-35P.

No special tools or equipment are required to perform

2-3. Specially Designed Tools and Equipment

the repair operations described in this manual.

2-2. Direct Support, General Support, and Depot

No specially designed tools and equipment are required

Maintenance Repair Parts

to perform maintenance on the forklift truck.

Section II. TROUBLESHOOTING

2-4. General

may occur are listed in table 2-1. Each malfunction

stated is followed by a list of probable causes of the

This section provides information useful in diagnosing

trouble.

The corrective action recommended is

and correcting unsatisfactory operation or failure of the

described opposite the probable cause.

forklift truck and its components. Malfunctions which

Table 2-1. Troubleshooting

Malfunction

Probable cause

Corrective action

1. Brake pedal goes to floorboard

a. Oil or grease on brake lining--------------------

a. Replace brake shoe (para 3-23).

or is spongy.

b. Boot and gasket in master cylin-

b. Replace boot and gasket. (para 3-22).

der damaged or worn out.

c. Brake shoes out of adjustment-----------------

c. Adjust (para 3-23).

d. Defective wheel cylinder-------------------------

d. Replace cylinder (para 3-23).

2. Brakes are dragging (either or

a. No return bleeding in master

a. Adjust pushrod (para 3-22).

both sides).

cylinder.

b. Brake shoes out of adjustment-----------------

b. Adjust (para 3-23).

c. Broken or loose brake shoe

c. Replace or adjust (para 3-23).

springs.

d. Shoe mounting plate loose----------------------

d. Tighten (para 3-23).

e. Brake drum out-of-round. Spindle

e. Replace (para 3-23).

bent.

3. Parking brake or seat brake

Brake shoes soaked with oil or

Replace brake shoes (para 3-24).

does not hold.

grease.

4. Failure to drive (forward or re-

a. Foot brake switch defective ---------------------

a. Replace (TM 10-3930-611-12 para

verse).

3-29).

b. Battery interlock switch defec-

b. Replace (TM 10-3930-611-12 para

tive.

3-31).

c. Seat switch defective-----------------------------

c. Replace (TM 10-3930-611-12, para

3-28).

d. Emergency switch defective--------------------

d. Replace (TM 10-3930-611-12 para

3-30).

e. Directional switch defective ---------------------

e. Replace (TM 10-3930-611-12 para

3-22).

f. Accelerator switch defective---------------------

f. Replace (para 3-5).

g. Line contactor defective -------------------------

g. Replace (para 3-6).

h. Forward and reverse contactor

h. Replace (para 3-6).

defective.

i. SCR defective --------------------------------------

i. Replace (para 3-6).

2-1