TM 9-2330-356-14
(8) Connect eight hoses to brake air chambers on
5-17. Bogie Assembly M967A1, M969A1, and
M970A1 including M970 SN TC-0843, TC-0844, and
both axles as tagged. Manually release the fail-safe springs
TC-103 thru TC-178).
a.
Removal.
(9) Remove jacks and supports, and lower
(1) Position semitrailer on hard, level surface
semitrailer to ground.
with front resting on landing gear.
5-18. Engine and Pump
Assembly
(2) Jack up rear of semitrailer and support under
frame securely until weight of semitrailer is removed from
NOTE
The engino and pump assembly is re-
moved and installed as a unit power plant.
(3) Release air from both air reservoirs by
Removal of the complete module is neces-
sary to remove the engine.
(4) Tag and disconnect eight hoses from brake air
The pump can be removed without remov-
chambers on both axles. Manually release the fail-safe
ing the complete module.
a.
(5) Position a jack under the trunnion tube close
to the inside of each trunnion hanger to support weight of
(1) Disconnect negative, then positive battery
trunnion tube.
cables from batteries (l).
(6) Remove four nuts, four washers, and four
(2) Remove self-tapping screws from muffler
bolts which fasten the trunnion hanger to the mounting
bracket. Repeat for opposite side.
(7) Remove jacks from under trunnion tube.
from the alternator to get clearance for removal of
Raise semitrailer until there is enough clearance to roll
throttle cable.
the bogie assembly and wheels out from under rear of
(4) Loosen wing screws and remove panel door
(8) Lower semitrailer onto supports or cribbing
(5) Remove -inch oil pressure tube (7) for oil
pressure gage from oil adapter. Remove -inch fuel
b.
Installation.
pressure tube (6) from primary filter. Cut the tie straps,
then pull oil pressure tube and fuel pressure tube from the
(1) Raise rear of semitrailer to allow bogie
engine compartment.
assembly to roll under frame from rear. With front of
bogie assembly toward front of semitrailer, roll bogie
(6) Disconnect control panel wiring harness plug
assembly into position under mounting brackets for the
(8) from junction box on engine frame by turning
trunnion hangers.
counterclockwise with hook-type spanner wrench.
(2) Position a jack under trunnion tube as close as
possible to the inside of each trunnion hanger.
CAUTION
(3) Lower the semitrailer to within l-inch of the
Ensure that fuse has been removed first to
trunnion hangers.
prevent damage.
(4) Aline holes in mounting bracket with holes in
(7) Disconnect electrical lead for hose reels
trunnion hanger.
(M969, M969A1, M970, and M970A1) above and to right
(5) Install four capscrews, four washers, and four
nuts. As the nuts are tightened, jack up trunnion tube to
disconnected above, and remove two nuts and capscrews
securing conduit mounting plate to middle of engine
seat the trunnion hanger. Tighten nuts to 90 lb.-ft.
frame behind engine.
(6) Tighten two trunnion capscrews and nuts.
(8) Remove split couplings, and disconnect pump
inlet and outlet lines from the centrifugal pump (10).
(7) Repeat steps (4) through (6) for opposite side.
Change 3