STEERING LINKAGE ADJUSTMENT

TM 10-3930-623-12

5-39. CHASSIS MAINTENANCE.

5-40. STEERING LINKAGE ADJUSTMENT (see figure

1-5).

1. Road test truck to see that equal turning angle is

obtained in either direction of turn.

2. If turning angle is not equal, adjust by raising truck

and adjusting length of drag link as given below.

Lengthening drag link increases angle in left turn;

shortening it increases angle in right turn within the limits

of range permitted by the stops on the steering axle.

3. Loosen both clamps shown on figure 1-5, at the

ends of the drag link without disconnecting the tie rod

ends.

NOTE

Tie rod ends on drag link have

opposing threads (one right-hand

threaded,

the

other

left-hand

threaded). Do not remove them from

pitman arm or steering axle for this

adjustment.

4. Turn drag link as necessary (to screw tie rod ends

in or out) until turn angle is equal in either direction of

turn, and retighten clamps to secure adjustment.

5-41. BLEEDING SERVICE BRAKE SYSTEM. The

hydraulic brake system must be bled to expel air that

enters when the lines have been broken or

disconnected.

The need is generally indicated by

springy or spongy brake pedal action.

CAUTION

1. Remove fill cap from brake master cylinder and

connect a pressure brake bleeder to the master cylinder.

Hydraulic brake fluid bled from the

Be sure the brake bleeder tank contains enough of the

brake system must not be reused.

specified brake fluid, and enough air pressure to

complete the job.

5-42. LUBRICATION.

2. Clean the bleeder screws (13, figure 4-6) at each

5-43. LO 10-3930-623-10 for the fork lift truck gives the

wheel. Attach one end of bleeder hose to bleeder screw

and place other end of hose in clean container partially

type of lubricant, lubricating time interval and location of

filled with hydraulic brake fluid. Be sure end of hose is

lubricating points. The service intervals specified in the

submerged in the hydraulic fluid.

LO are for normal operation where moderate

temperature, humidity and atmospheric conditions

Turn bleeder screw counterclockwise three-

prevail. Reduce the service intervals when operating the

quarters of a turn. Hydraulic fluid containing air bubbles

truck under unusual conditions to compensate for

should be forced through the bleeder hose into

container.

abnormal or extreme conditions.

4. Continue until the fluid flows in a steady solid

5-44. TROUBLESHOOTING.

stream without air bubbles. Close bleeder screw by

turning in clockwise direction. Remove bleeder hose.

5-45.

The following table contains troubleshooting

information

concerning

troubles

that

may

5. Repeat the bleeding procedure at the other wheel.

encountered on the fork lift truck. Each symptom is

Replace filler cap. Hydraulic brake fluid bled from the

followed by a listing of possible causes and suggested

brake system must not be reused.

remedies. To isolate the possible cause, proceed in a

systematic manner to determine the faulty component.

5-15