TM-9-2320-285-24-1
TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1
TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1985
TM-9-2320-285-24-1 - Page 22 of 987
TM 9-2320-285-24-1
1-26.
FRAME AND TOWING ATTACHMENTS
1.
FRAME.
Two welded box section steel flange
beams extend the length of tractor; provides mounting
facilities for engine, transmission, axles, cab deck, and
fifth wheel boom.
2.
SPARE TIRE CARRIER.
Located at right hand
side of vehicle, under battery box.
Pivoting hangers
allow carrier to be lowered for spare tire removal.
3.
FIFTH WHEEL.
Mounted on fifth wheel boom,
supports towed trailer; includes jaws for securing trailer
kingpin; fifth wheel pivots around bushings in brackets
welded to fifth wheel boom.
1-27.
SPRINGS AND SHOCK ABSORBERS
1.
SPRINGS AND SPRING SEATS.
Two semi-
elliptical leaf springs attach front axle to frame; springs
are attached to front axle through spring pads and
attached to frame by shackles.
2.
SHOCK ABSORBERS.
Two, mounted between
springs and frame.
Shock absorbers, together with
springs, frame-mounted rubber blocks, and rubber cab
mounts cushion cab from jolts and bumps.
1-28.
CAB AND BODY
1.
BODY.
Includes cab deck, side step, rear
platform, rear cab guard and heat shield, bumper and
grille guard, and hood and rear enclosure.
2.
CAB.
Provides enclosure for operator; mounted
on cab deck through rubber mounts, includes door with
window and arm rest, windshield, right side and rear
windows, rear window guard, and operator’s seat.
1-13
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