CHECKOUT - TM-55-1740-200-140056

TM 55-1740-200-14

d. Before installing front steering hydraulic cylinder

4-40. CHECKOUT. Start engine and test operate front

(9) adjust to 33-1/4 inches between centerlines of anchor

and rear steering with tractor stationary. Detailed rear

bracket ball stud and lower front steering bell crank (10)

steer testing is outlined in adjustment procedures.

ball stud with the cylinder (9) piston in the center

position.

4-41. ADJUSTMENT. See figure 4-1 and adjust the

steering system as follows:

NOTE

a. After steering gear (3), steering column (4) and

To obtain center position of cylinder (9),

steering wheel (5) are installed in the tractor, turn the

extend piston fully and retract 6 inches.

steering wheel (5) to the left as far as it will turn. Turn

the steering wheel (5) to the right as far as it will turn,

e. Adjust link (2) between cab rear steer lever (1) and

counting the number of turns of the wheel to the closest

cam and valve assembly lever (18), to 16-3/4 inches

1/8 turn. Turn the steering wheel (5) to the left 1/2 the

centerlines of ball joints before installation.

foregoing number of turns and install the steering gear

lever (pitman) arm (16) onto the steering gear shaft in a

f. Before installing rear steer link assembly (8)

vertical position.

between cam (35) and left rear wheel link bracket, adjust

to 42 inches centerlines of ball joints.

b. Adjust front steering valve and drag link assembly

(11) to 22-1/4 inches centers between ball studs before

g. Adjust rear axle hydraulic cylinder (6) to 33-1/4

attaching to pitman arm (16) and front steering bell crank

inches between centerlines of anchor bracket ball stud

(10). To adjust front steering valve and drag link assembly

and rear axle ball stud bracket (7) ball stud with cylinder

(11) loosen rod ends and lengthen or shorten by turning

(6) piston in center position.

rod ends on threaded rod as appropriate.

c. Adjust front axle drag link (12) to a length of

NOTE

36-1/4 inches centers between ball stud of front axle ball

stud bracket (13) and ball stud on front steering bell

To obtain center position, extend cylinder (6)

crank (10).

piston fully and retract 6 inches.

NOTE

h. After installation of pitman arm stop bracket (14),

and with engine running, steer front wheels only, to full

This dimension is extremely critical for proper

right and full left and adjust pitman arm stop screws (15)

steering.

1. Lever

16. Arm

30.

Roller

2. Link

17. Cotter Pin

31.

Rod

3. Gear

18. Lever

32.

Nut

4. Column

19. Nut

33.

Ball Joint

5. Wheel

20. Nut

34.

Nut

6. Cylinder

21. spool

35.

Cam

7. Bracket

22. Valve

36.

Lever

8. Link

23. Elbow

37.

Nut

9. Cylinder

24. Bushing

38.

Bracket

10. Bell Crank

25. Spring

39.

Spring

11. Drag Link

26. Clamp

40.

Spring

12. Drag Link

27. Nut

41.

13. Bracket

28. Adapter

42.

Cotter Pin

14, Bracket

29. Pin

43.

15. Screw

Figure 4-1. Steering system adjustment schematic (sheet 1 of 2)

4-4