Midships Alligator 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:
M915A2                                              Reference              Condition Description
Tools and Special Equipment:                        TM 9-2320-363-20       Left Side Platform
                                                                           Removed
Shop Equipment, SC 4910-95-CL-A31
Tool Kit, SC 5180-90-CL-N05                         TM 9-2320-363-20       Personal Gear Storage
                                                                           Box and Mounting
Personnel Required: (3)                                                    Bracket Removed

References:                                         TM 9-2320-363-20       Air Dryer Removed

TM 9-2320-363-20                                    TM 9-2320-363-20       Rear Platform Removed
                                                    TM 9-2320-363-20       Right Rear Fender
                                                                           Removed
                                                    Page 20-3              Fifth Wheel Removed
                                                    Page 8-15              Rear Crossmember
                                                                           Removed

TM page 8-47

Illustration from TM 9-2320-363-34-1 (PDF page 585)

NOTE Procedure is done on right side of vehicle.

1. REMOVE FOUR NUTS (1), FOUR WASHERS (2), FOUR CAPSCREWS (3), AND FOUR WASHERS (4).

2. REMOVE FOUR NUTS (5), FOUR WASHERS (6), FOUR CAPSCREWS (7), FOUR WASHERS (8), AND TWO BRACKETS (9). SET BRACKETS (9) ASIDE.

3. REMOVE EIGHT NUTS (10), EIGHT WASHERS (11), EIGHT CAPSCREWS (12), EIGHT WASHERS (13), AND TWO GUSSETS (14).

4. REMOVE NUT (15), WASHER (1 6), CAPSCREW (17), AND WASHER (18) FROM LIFTING BRACKET (19).

TM page 8-48

Illustration from TM 9-2320-363-34-1 (PDF page 586)

NOTE Loosen nuts only enough to allow removal of midships alligator crossmember.

5. LOOSEN SIX NUTS (20) ON CAB ALLIGATOR CROSSMEMBER (21).

TM page 8-49

Illustration from TM 9-2320-363-34-1 (PDF page 587)

6. REMOVE SIX NUTS (22), SIX WASHERS (23), SIX CAPSCREWS (24), AND SIX WASHERS (25) FROM SUSPENSION CROSSMEMBER (26).

7. REMOVE EIGHT NUTS (27), EIGHT WASHERS (28), EIGHT CAPSCREWS (29), AND EIGHT WASHERS (30) FROM MIDSHIPS ALLIGATOR CROSSMEMBER (31).

8. INSTALL HYDRAULIC SPREADER AT ANGLE GOING FROM INSIDE LOWER CORNER OF LEFT FRAME RAIL (32) TO INSIDE UPPER CORNER OF RIGHT FRAME RAIL (33).

NOTE It may be necessary to further loosen nuts loosened in step 5 if frame rails will not spread far enough apart to allow removal of midships alligator crossmember.

9. SLOWLY SPREAD TWO FRAME RAILS (32 AND 33) ENOUGH TO ALLOW MIDSHIPS ALLIGATOR CROSSMEMBER (31) TO BE TILTED AT ANGLE OPPOSITE OF HYDRAULIC SPREADER.

CAUTION To prevent possible damage to frame rails, spread frame rails only enough to allow removal of midships alligator crossmember.

10. CONTINUE TO SPREAD TWO FRAME RAILS (32 AND 33) UNTIL MIDSHIPS ALLIGATOR CROSSMEMBER (31) CAN BE REMOVED.

11. REMOVE MIDSHIPS ALLIGATOR CROSSMEMBER (31).

TM page 8-50

Illustration from TM 9-2320-363-34-1 (PDF page 588)

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

Inspect all pads for wear or damage.

NOTE Procedure is done on right side of vehicle.

1. INSTALL MIDSHIPS ALLIGATOR CROSSMEMBER (1) AT ANGLE OPPOSITE OF HYDRAULIC SPREADER BETWEEN TWO FRAME RAILS (2 AND 3).

2. SLOWLY RELEASE PRESSURE ON HYDRAULIC SPREADER, AND AT SAME TIME, KEEP MIDSHIPS ALLIGATOR CROSSMEMBER (1) ALlNED WITH TWO FRAME RAILS (2 AND 3).

3. REMOVE HYDRAULIC SPREADER FROM TWO FRAME RAILS (2 AND 3).

4. INSTALL EIGHT WASHERS (4), EIGHT CAPSCREWS (5), EIGHT WASHERS (6), AND EIGHT NUTS (7) ON MIDSHIPS ALLIGATOR CROSSMEMBER (1) AND TWO FRAME RAILS (2 AND 3).

TM page 8-51

Illustration from TM 9-2320-363-34-1 (PDF page 589)

INSTALL SIX WASHERS (8), SIX CAPSCREWS (9), SIX WASHERS (10), AND SIX NUTS (11) ON SUSPENSION CROSSMEMBER (12).

6. TIGHTEN SIX NUTS (13) ON CAB ALLIGATOR CROSSMEMBER (14).

TM page 8-52

Illustration from TM 9-2320-363-34-1 (PDF page 590)

7. INSTALL WASHER (15), CAPSCREW (16), WASHER (17), AND NUT (18) ON LlFTG BRACKET (19).

8. INSTALL TWO GUSSETS (20), EIGHT WASHERS (21), EIGHT CAPSCREWS (22), EIGHT WASHERS (23), AND EIGHT NUTS (24).

TM page 8-53

9. INSTALL TWO BRACKETS (25), FOUR WASHERS (26), FOUR CAPSCREWS (27), FOUR WASHERS (28), AND FOUR NUTS (29).

10. INSTALL FOUR WASHERS (30), FOUR CAPSCREWS (31), FOUR WASHERS (32), AND FOUR NUTS (33).

NOTE Follow-on Maintenance:

Install left side platform (TM 9-2320-363-20). Install personal gear storage box and mounting bracket (TM 9-2320-363-20). Install air dryer (TM 9-2320-363-20). Install rear platform (TM 9-2320-363-20). Install right rear fender (TM 9-2320-363-20). install fifth wheel (page 20-3). Install rear crossmember (page 8-15).

TM page 8-54 Change 1

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       Fuel Tank Drained

Shop Equipment, SC 4910-95-CL-A31                   TM 9-2320-363-20       Rear Fender Removed
Tool Kit, SC 5180-90-CL-N05
                                                    Page 11-34             Hydraulic Winch Frame
                                                                           Removed
Personnel Required: (3)
                                                    Page 3-263             Transfer Case Removed
References:
                                                    Page 20-6              Fifth Wheel Removed
TM 9-2320-363-10
TM 9-2320-363-20                                    Page 8-25              Overslung Crossmember
                                                                           Removed
                                                    Page 8-20              Rear Crossmember
                                                                           Removed

TM page 8-55

Illustration from TM 9-2320-363-34-1 (PDF page 593)

NOTE Procedure is done on right side of vehicle.

1. REMOVE FOUR NUTS (1), FOUR WASHERS (2), FOUR CAPSCREWS (3), AND FOUR WASHERS

2. REMOVE FOUR NUTS (5), FOUR WASHERS (6), FOUR CAPSCREWS (7), FOUR WASHERS (8), AND TWO BRACKETS (9). SET BRACKETS (9) ASIDE.

3. REMOVE EIGHT NUTS (10), EIGHT WASHERS (11), EIGHT CAPSCREWS (12), EIGHT WASHERS (13), AND TWO GUSSETS (14).

4. REMOVE NUT (15), WASHER (16), CAPSCREW (17), AND WASHER (18) FROM LIFTING BRACKET (19).

TM page 8-56

Illustration from TM 9-2320-363-34-1 (PDF page 594)

NOTE Loosen nuts only enough to allow removal of midships alligator crossmember.

5. LOOSEN EIGHT NUTS (20) ON CAB ALLIGATOR CROSSMEMBER (21).

TM page 8-57

Illustration from TM 9-2320-363-34-1 (PDF page 595)

6. REMOVE SIX NUTS (22), SIX WASHERS (23), SIX CAPSCREWS (24), AND SIX WASHERS (25) FROM SUSPENSION CROSSMEMBER (26).

7. REMOVE EIGHT NUTS (27), EIGHT WASHERS (28), EIGHT CAPSCREWS (29), AND EIGHT WASHERS (30) FROM MIDSHIPS ALLIGATOR CROSSMEMBER (31).

8. INSTALL HYDRAULIC SPREADER AT ANGLE GOING FROM INSIDE LOWER CORNER OF LEFT FRAME RAIL (32) TO INSIDE UPPER CORNER OF RIGHT FRAME RAIL (33).

NOTE

It may be necessary to further loosen nuts loosened in step 5 if frame rails will not spread far enough apart to allow removal of midships alligator crossmember.

9. SLOWLY SPREAD TWO FRAME RAILS (32 AND 33) ENOUGH TO ALLOW MIDSHIPS ALLIGATOR CROSSMEMBER (31) TO BE TILTED AT ANGLE OPPOSITE OF HYDRAULIC SPREADER.

CAUTION To prevent possible damage to frame rails, spread frame rails only enough to allow removal of midships alligator crossmember.

10. CONTINUE TO SPREAD TWO FRAME RAILS (32 AND 33) UNTIL MIDSHIPS ALLIGATOR CROSSMEMBER (31) CAN BE REMOVED.

11. REMOVE MIDSHIPS ALLIGATOR CROSSMEMBER (31) AND TWO SPACERS (34) FROM TWO FRAME RAILS (32 AND 33).

TM page 8-58

Illustration from TM 9-2320-363-34-1 (PDF page 596)

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

Inspect all parts for wear or damage.

Procedure is done on right side of vehicle.

1. INSTALL TWO SPACERS (1) ON TWO FRAME RAILS (2 AND 3).

2. INSTALL MIDSHIPS ALLIGATOR CROSSMEMBER (4) AT ANGLE OPPOSITE OF HYDRAULIC SPREADER BETWEEN TWO FRAME RAILS (2 AND 3).

3. SLOWLY RELEASE PRESSURE ON HYDRAULIC SPREADER, AND AT SAME TIME, KEEP MIDSHIPS ALLIGATOR CROSSMEMBER (4) ALINED WITH TWO FRAME RAILS (2 AND 3).

4. REMOVE HYDRAULIC SPREADER FROM TWO FRAME RAILS (2 AND 3).

5. INSTALL EIGHT WASHERS (5), EIGHT CAPSCREWS (6), EIGHT WASHERS (7), AND EIGHT NUTS (8) ON MIDSHIPS ALLIGATOR CROSSMEMBER AND TWO FRAME RAILS (2 AND 3).

TM page 8-59

Illustration from TM 9-2320-363-34-1 (PDF page 597)

6. INSTALL SIX WASHERS (9), SIX CAPSCREWS (10), SIX WASHERS (11), AND SIX NUTS (12) ON SUSPENSION CROSSMEMBER (13).

FUEL TANK NOT SHOWN FOR CLARITY

7. TIGHTEN EIGHT NUTS (14) ON CAB ALLIGATOR CROSSMEMBER (15).

TM page 8-60

Illustration from TM 9-2320-363-34-1 (PDF page 598)

8. INSTALL WASHER (16), CAPSCREW (17), WASHER (18), AND NUT (19) ON LIFTING BRACKET (20).

9. INSTALL TWO GUSSETS (21 ), EIGHT WASHERS (22), EIGHT CAPSCREWS (23), EIGHT WASHERS (24), AND EIGHT NUTS (25).

TM page 8-61

Illustration from TM 9-2320-363-34-1 (PDF page 599)

10. INSTALL TWO BRACKETS (26), FOUR WASHERS (27), FOUR CAPSCREWS (28), FOUR WASHERS (29), AND FOUR NUTS (30).

11. INSTALL FOUR WASHERS (31), FOUR CAPSCREWS (32), FOUR WASHERS (33), AND FOUR NUTS (34).

NOTE Follow-on Maintenance:

Fill fuel tank (TM 9-2320 -363-10). Install rear fender (TM 9-2320-363-20). Install hydraulic winch frame (page 11-34). Install transfer case (page 3-263). Install fifth wheel (page 20-6). Install overslung crossmember (page 8-25). Install rear crossmember (page 8-20).

TM page 8-62