TM 5-2590-512-13&P
SECTION V. UNIT MAINTENANCE PROCEDURE
4-19 Chain Adjustment.
This task covers:
a. Adjustment.
Initial Setup
Tools:
Equipment Conditions:
General Mechanic's Tool Kit
Front Safety Cover Removed (para. 4-17).
5180-00-177-7033 is
Materials and Parts:
Rags.
WARNING
Hydraulic
pressure
remaining after SEE engine
is
off
could
cause
unexpected auger rotation
resulting in death.
Depressurize
system
by
shutting off SEE engine
and
operating
auger
controls thru full range of
motion.
a. Adjustment
1.
Depressurize hydraulic system.
2.
Disconnect two hydraulic hoses at
quick-disconnect fittings (1). Use
rag to catch drippings.
3.
Loosen four motor plate nuts (2).
4.
Loosen two lock-up nuts (3).
5.
Turn two adjusting rod nuts (4)
until motor plate (5) will slide in
its slots and chain (6) is loose.
CAUTION
The drive chain is adjusted
when there is 1/8 inch slack
at midpoints on both sides
of
sprocket.
Do
NOT
overtighten chain. This
will
cause
shafts
and
sprockets to fail and void
warranty.
6.
Turn adjusting rod nuts (4) until chain slack is 1/8 inch (6). Adjust both sides of motor plate (5) equally. If
necessary, repeat steps until correct adjustment is attained.
7.
Hold adjusting rod nut (4) and tighten lock-up nut (3) equally on both sides.
8.
Tighten four motor plate nuts (2) to 63-75 Ib. ft. (88-102 N•m). Re-check for correct 1/8 inch slack in chain
on both sides of sprocket. Repeat adjustment if necessary.
FOLLOW ON TASKS.
Install front safety cover (see para. 4-17).
Connect hydraulic hoses at quick-disconnect fittings at Auger Drive Unit. Use rag to catch drippings and clean
connections.
END OF TASK.
4-20
