Frame Maintenance Instructions (Cont)
13-19. REAR TANDEM GUSSETS REMOVAL/INSTALLATION (M977, M985, M985E1 , M978).
This task covers:
a. Lower Left Gusset Removal
f. Lower Right Gusset Installation
b. Lower Left Gusset Installation
g. Upper Right Gusset Removal
c. Upper Left Gusset Removal
h. Upper Right Gusset Installation
d. Upper Left Gusset Installation
i. Follow-on Maintenance.
e. Lower Right Gusset Removal
M977, M985, M985E1 , M978
TM or Para
Rear tandem crossmember
TM 9-2320-279-20 Left and right rear brake
relay valves removed.
TM 9-2320-279-20 Tractor protection valve
Ties, cable, plastic, Item 65, Appendix C
Special Environmental Conditions
MOS 63W, Wheel vehicle repairer (2)
General Safety Instructions
Level of Maintenance
a. Lower Left Gusset Removal.
l Remove and install hose brackets, clips, and plastic cable ties as required.
Mark position of screws before removing.
Remove two locknuts (1), screws (2), and No. 3 axle stop (3).
Soldier A and Soldier B remove 17 locknuts (4) and screws (5).
Remove two locknuts (6) and screws (7).
Remove locknut (8) and screw (9).
Remove lower left gusset (10) and two spacers (11 and 12).
b. Lower Left Gusset Installation.
(1) Soldier A and Soldier B install lower left gusset (10), 17 screws (5), and locknuts (4).
(2) Install spacer (12), two screws (9), and locknuts (6).
(3) Install spacer (11), screw (9), and locknut (8).
(4) Install No. 3 axle stop (3), two screws (2), and locknuts (1).