TM-9-2320-260-34-2

TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; VOLUME 2 OF 2

JULY 1994

TM-9-2320-260-34-2 - Page 141 of 863

15-26. RETRACTABLE BEAM REPLACEMENT

THIS TASK COVERS:

a. Removal

b. Installation

INITIAL SETUP

APPLICABILE MODELS

M820, M820A1, M820A2

TOOLS

General mechanic’s tool kit

(Appendix B, Item 1)

MATERIALS/PARTS

Two locknuts (Appendix D, Item 195)

Seal (Appendix D, Item 445)

Seal (Appendix D, Item 441)

Seal (Appendix D, Item 442)

REFERENCES (TM)

TM 9-237

TM 9-2320-260-10

TM 9-2320-260-34P-2

EQUIPMENT CONDITION

●

Parking brake set (TM 9-2320-260-10).

●

Van body sides fully expanded and secured

(TM 9-2320-260-10).

●

Retractable beam rollers removed (para. 15-27).

●

Retractable beam driveshaft and lock removed

(para. 15-25).

CAUTION

Remove and install retractable beam slowly from underframe.

Failure to do so may result in damage to retractable beam.

1. Break welds between side panel (1) and side panel support ( 13) (TM 9-237) and remove retractable

beam (12) frorn side panel (1).

2. Remove retractable beam (12) from underframe (3) at channel (4) by sliding under side panel (1).

3. Remove two locknuts (6), washers (7), screws (11), seven screws (10), retainer (9), and seals (8), (2),

and (5) from underframe (3). Discard locknuts (6) and seals (8), (2), and (5).

1. Install new seals (5), (2), and (8) and retainer (9) on underframe (3) with seven screws (10), two

screws (11), washers (7), and new locknuts (6).

2. Install retractable beam (12) in underframe (3) at channel (4) by sliding under side panel (1).

3. Weld side panel (1) to side panel support (13) (TM 9-237).

15-80

TM 9-2320-260-34-2