Front Spring Replacement

TM 9-2320-363-34-1 · Chapter 9 — Suspension Maintenance

This task covers: a. Removal b. Cleaning c. Inspection d. Installation

Tools and Special Equipment:                           General Safety Instructions:

Shop Equipment, SC 4910-95-CL-A31
Tool Kit, SC 5180-90-CL-N05                                              WARNING
                                                               Shim(s) is used to adjust
References:
                                                               caster alinement. Failure to
TM 9-2320-363-10                                               install shim(s) correctly will
                                                               cause hard steering, and could
Equipment Condition:                                           result in injury to personnel.

Reference                      Condition Description
TM 9-2320-363-10               Front Wheel Removed

1. USING SUITABLE LIFTING DEVICE, LIFT AND SUPPORT FRAME (1) AND FRONT AXLE (2) TO RELIEVE WEIGHT FROM SPRING (3).

Axle stop is offset to one side to aline with frame. Note position of axle stop prior to removal to aid in installation.

2. REMOVE FOUR NUTS (4), FOUR WASHERS (5), TWO U-BOLTS (6), AND AXLE STOP (7) FROM FRONT AXLE (2) AND SPRING (3).

3. REMOVE STOP CUSHION (8) FROM AXLE STOP (7).

4. REMOVE GREASE FITTING (9), TWO NUTS (10), TWO WASHERS (11), TWO SCREWS (12), TWO WASHERS (13), TWO WEAR PLATES (14), FOUR SHIMS (15), AND PIN (16) FROM REAR END OF SPRING (3).

5. REMOVE GREASE FITTING (17), TWO NUTS (18), TWO WASHERS (19), TWO SCREWS (20), TWO WASHERS (21), TWO SHACKLES (22), TWO WEAR PLATES (23), FOUR SHIMS (24), AND PIN (25) FROM REAR SPRING HANGER (26).

6. REMOVE GREASE FITTING (27), FOUR SCREWS (28), FOUR WASHERS (29), AND TWO SADDLE CAPS (30).

7. LOWER FRONT AXLE (2) TO ALLOW SPRING (3) TO CLEAR FRONT SPRING HANGER (31). REMOVE TWO WASHERS (32) AND PIN (33) FROM FRONT OF SPRING (3).

l Perform step 8 on M915A2 only.

8. REMOVE SPRING (3), SPACER (34), SHIM(S) (35), AND PIN (36).

9. REMOVE SPRING (3) FROM FRONT AXLE (2).

Use general cleaning methods to clean all parts (page 2-30).

Inspect all parts for wear or damage.

l Procedure is the same for all vehicles except as noted. M915A2 is shown.

l Perform step 1 on M915A2 only.

1. INSTALL PIN (1), SHIM(S) (2), SPACER (3), AND SPRING (4) ON FRONT AXLE (5).

2. INSTALL SPRING (4) ON FRONT AXLE (5).

Install pin so that grooves line up with holes in shackle, allowing screws to be installed.

3. INSTALL PIN (6) AND TWO WASHERS (7) IN SPRING (4).

4. USING SUITABLE LIFTING DEVICE, RAISE FRONT AXLE (5) SO THAT FRONT END OF SPRING (4) IS POSITIONED IN FRONT SPRING HANGER (8). INSTALL TWO SADDLE CAPS (9), FOUR WASHERS (10), FOUR SCREWS (11), AND GREASE FITTING (12). TIGHTEN SCREWS TO 50 LB-FT (68 N.m).

5. INSTALL PIN (13), FOUR SHIMS (14), TWO WEAR PLATES (15), TWO SHACKLES (16), TWO WASHERS (17), TWO SCREWS (18), TWO WASHERS (19), TWO NUTS (20), AND GREASE FITTING (21) IN REAR SPRING HANGER (22).

6. POSITION SPRING (4) IN TWO SHACKLES (16) AND INSTALL FOUR SHIMS (23), TWO WEAR PLATES (24), AND PIN (25).

7. ALINE GROOVES IN PIN (25) WITH HOLES IN TWO SHACKLES (16) AND CHECK END PLAY. END PLAY SHOULD BE NO MORE THAN 1/32 IN. (0.8 mm). ADD SHIMS TO CORRECT END PLAY. IF POSSIBLE, ADD SAME NUMBER OF SHIMS ON EACH SIDE OF PIN (25).

8. INSTALL TWO WASHERS (26), TWO SCREWS (27), TWO WASHERS (28), TWO NUTS (29), AND GREASE FITTING (30).

Incorrect installation of axle stop will cause damage to axle and frame during use.

9. INSTALL AXLE STOP (31 ) IN POSITION NOTED DURING REMOVAL. INSTALL TWO U-BOLTS (32), FOUR WASHERS (33), AND FOUR NUTS (34). TIGHTEN NUTS TO 380-460 LB-FT (515-624 N.m).

10. INSTALL STOP CUSHION (35) IN AXLE STOP (31).

Install front wheel (TM 9-2320-363-10).