Rear Suspension Crossmember Replacement

TM 9-2320-363-34-1 · Chapter 8 — Frame and Towing Attachments Maintenance

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

Applicable Configuration:                           Equipment Condition (Cont):
M915A2                                              Reference               Condition Description
Tools and Special Equipment:                        TM 9-2320-363-20        Rear Quick-Release
                                                                            Valve Removed
Tool Kit, SC 5180-90-CL-N05
                                                    Page 20-3               Fifth Wheel Removed
Personnel Required: (2)
                                                    Page 9-8                Rear Spring Hangers
References:                                                                 Removed
TM 9-2320-363-20                                    Page 9-14               Torque Rods Removed

Equipment Condition:
Reference                 Condition Description
TM 9-2320-363-20          Rear Anti-Lock Brake
                          System (ABS) Air
                          Solenoids Removed
TM 9-2320-363-20          Rear Tractor Protection
                          Valve Removed
TM 9-2320-363-20            Rear Relay Valve
                            Removed

TM page 8-63

Illustration from TM 9-2320-363-34-1 (PDF page 601)

1. REMOVE TWO NUTS (1), TWO WASHERS (2), AND TWO CLAMPS (3) AND SET HOSE (4) ASIDE.

2. REMOVE TWO NUTS (5), TWO WASHERS (6), AND TWO CLAMPS (7) AND SET TWO HOSES (8 AND 9) ASIDE.

TM page 8-64

Illustration from TM 9-2320-363-34-1 (PDF page 602)

3. REMOVE FOUR NUTS (10), FOUR WASHERS (11), FOUR CAPSCREWS (12), AND FOUR WASHERS (13) FROM TWO REAR SUSPENSION CROSSMEMBERS (14 AND 15).

4. REMOVE 12 NUTS (16), 12 WASHERS (17), 12 CAPSCREWS (18), 12 WASHERS (19), AND REAR SUSPENSION CROSSMEMBER (14).

5. REMOVE 12 NUTS (20), 12 WASHERS (21), 12 CAPSCREWS (22), 12 WASHERS (23), REAR SUSPENSION CROSSMEMBER (15), AND 2 GUSSETS (24 AND 25).

NOTE Mark left and right gussets prior to removal to aid in installation.

6. REMOVE FOUR NUTS (26), FOUR WASHERS (27), FOUR CAPSCREWS (28), FOUR WASHERS (29), AND LEFT GUSSET (30).

7. REMOVE FOUR NUTS (31 ), FOUR WASHERS (32), FOUR CAPSCREWS (33), FOUR WASHERS (34), AND RIGHT GUSSET (35).

TM page 8-65

Illustration from TM 9-2320-363-34-1 (PDF page 603)

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

Inspect all parts for wear or damage.

1, INSTALL RIGHT GUSSET (1), FOUR WASHERS (2), FOUR CAPSCREWS (3), FOUR WASHERS (4), AND FOUR NUTS (5).

2. INSTALL LEFT GUSSET (6), FOUR WASHERS (7), FOUR CAPSCREWS (8), FOUR WASHERS (9), AND FOUR NUTS (10).

3. INSTALL 2 GUSSETS (11 AND 12), REAR SUSPENSION CROSSMEMBER (13), 12 WASHERS (14), 12 CAPSCREWS (15), 12 WASHERS (16), AND 12 NUTS (17).

4. INSTALL REAR SUSPENSION CROSSMEMBER (18), 12 WASHERS (19), 12 CAPSCREWS (20), 12 WASHERS (21), AND 12 NUTS (22).

5. INSTALL FOUR WASHERS (23), FOUR CAPSCREWS (24), FOUR WASHERS (25), AND FOUR NUTS (26) ON TWO REAR SUSPENSION CROSSMEMBERS (13 AND 18).

TM page 8-66

Illustration from TM 9-2320-363-34-1 (PDF page 604)

6. POSITION TWO HOSES (27 AND 28) AND INSTALL TWO CLAMPS (29), TW0 WASHERS (30), AND TWO NUTS (31).

7. POSITION HOSE (32) AND INSTALL TWO CLAMPS (33), TWO WASHERS (34), AND TWO NUTS (35).

NOTE Follow-on Maintenance: Install rear tractor protection valve (TM 9-2320-363-20). Install rear relay valve (TM 9-2320-363-20). Install rear quick-release valve (TM 9-2320-363-20). Install fifth wheel (page 20-3). Install rear spring hangers (page 9-8). Install torque rods (page 9-14). Install rear Anti-Lock Brake System (ABS) air solenoids (TM 9-2320-363-20).

TM page Change 1 8-67

Illustration from TM 9-2320-363-34-1 (PDF page 605)

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

Applicable Configuration:                           Equipment Condition:

All except M915A2                                   Reference              Condition Description

Tools and Special Equipment:                        TM 9-2320-363-20       Rear Relay Valve
                                                                           Removed
Tool Kit, SC 5180-90-CL-N05
                                                    TM 9-2320-363-20       Rear Quick-Release
Personnel Required: (2)                                                    Valve Removed
                                                    Page 20-6              Fifth Wheel Removed
References:
                                                    Page 9-14              Torque Rods Removed
TM 9-2320-363-20

                                               NOTE
                                   Step 1 is for right side only.

1.   REMOVE NUT (1) WASHER (2) AND CLAMP (3).

TM page 8-68

Illustration from TM 9-2320-363-34-1 (PDF page 606)

NOTE Step 2 is for left side only.

2. REMOVE NUT (4), WASHER (5), AND CLAMP (6).

3. REMOVE TWO NUTS (7), TWO WASHERS (8), AND TWO CLAMPS (9) FROM TOP RIGHT GUSSET (10).

TM page 8-69

Illustration from TM 9-2320-363-34-1 (PDF page 607)

4. REMOVE FOUR NUTS (11), FOUR WASHERS (12), AND EIGHT CLAMPS (13), FROM TWO LOWER GUSSETS (14 AND 15).

5. REMOVE SEVEN NUTS (16), SEVEN WASHERS (17), SEVEN CAPSCREWS (18), AND SEVEN WASHERS (19) FROM REAR SUSPENSION CROSSMEMBERS (20 AND 21).

6. REMOVE 16 NUTS (22), 16 WASHERS (23), 16 CAPSCREWS (24), 16 WASHERS (25), REAR SUSPENSION CROSSMEMBER (20), AND CROSSMEMBER BACKING PLATE (26).

NOTE Mark left and right gussets prior to removal to aid in installation.

7. REMOVE 16 NUTS (27), 16 WASHERS (28), 16 CAPSCREWS (29) 16 WASHERS (30), REAR SUSPENSION CROSSMEMBER (21), AND 2 GUSSETS (10 AND 31).

TM page 8-70

Illustration from TM 9-2320-363-34-1 (PDF page 608)

8. REMOVE TWO NUTS (32), TWO WASHERS (33), AND TWO CLAMPS (34).

NOTE Mark left and right gussets prior to removal to aid in installation.

9. REMOVE SIX NUTS (35), SIX WASHERS (36), SIX CAPSCREWS (37), SIX WASHERS (38), AND LOWER LEFT GUSSET (14).

10. REMOVE SIX NUTS (39), SIX WASHERS (40), SIX CAPSCREWS (41), SIX WASHERS (42), AND LOWER RIGHT GUSSET (15).

TM page 8-71

Illustration from TM 9-2320-363-34-1 (PDF page 609)

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

Inspect all pans for wear or damage.

1. INSTALL LOWER RIGHT GUSSET (1), SIX WASHERS (2), SIX CAPSCREWS (3), SIX WASHERS (4), AND SIX NUTS (5).

2. INSTALL LOWER LEFT GUSSET (6), SIX WASHERS (7), SIX CAPSCREWS (8), SIX WASHERS (9), AND SIX NUTS (10).

TM page 8-72

Illustration from TM 9-2320-363-34-1 (PDF page 610)

3. INSTALL TWO CLAMPS (11 ), TWO WASHERS (12), AND TWO NUTS (13).

4. INSTALL 2 GUSSETS (14 AND 15), REAR SUSPENSION CROSSMEMBER (16), 16 WASHERS (17), 16 CAPSCREWS (18), 16 WASHERS (19), AND 16 NUTS (20).

TM page 8-73

Illustration from TM 9-2320-363-34-1 (PDF page 611)

5. INSTALL CROSSMEMBER BACKING PLATE (21), REAR SUSPENSION CROSSMEMBER (22), 16 WASHERS (23), 16 CAPSCREWS (24), 16 WASHERS (25), AND 16 NUTS (26).

6. INSTALL SEVEN WASHERS (27), SEVEN CAPSCREWS (28), SEVEN WASHERS (29), AND SEVEN NUTS (30) ON REAR SUSPENSION CROSSMEMBERS (16 AND 22).

7. INSTALL EIGHT CLAMPS (31 ), FOUR WASHERS (32), AND FOUR NUTS (33) ON TWO LOWER GUSSETS (1 AND 6).

8. INSTALL TWO CLAMPS (34), TWO WASHERS (35), AND TWO NUTS (36) ON TOP RIGHT GUSSET (14).

TM page 8-74

Illustration from TM 9-2320-363-34-1 (PDF page 612)

NOTE Step 9 is for left side only.

9. INSTALL CLAMP (37), WASHER (38), AND NUT (39).

NOTE Step 10 is for right side only.

10. INSTALL CLAMP (40), WASHER (41), AND NUT (42).

NOTE Follow-on Maintenance: Install rear relay valve (TM 9-2320-363-20). Install rear quick-release valve (TM 9-2320-363-20). Install fifth wheel (page 20-6). Install torque rods (page 9-14).

TM page Change 1 9-1

This chapter illustrates and describes procedures for maintenance of the suspension and related parts. A list of tasks contained in this chapter is shown below.

Page

Front Spring Replacement . . . . . . . . . . . . . . . . . . . 9-2

Front Spring Hangers Replacement . . . . . . . . . . . . 9-8

Rear Spring and Saddle Assembly Replacement . . 9-12

Torque Rod Replacement ................... 9-14

Rear Spring Hanger Replacement . . . . . . . . . . . . . 9-18

Equalizing Beam Replacement (M915A2) ....... 9-22

Equalizing Beam Replacement (All Except M915A2) 9-28

TM page 9-2