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Page Title:
OPERATING/ADJUSTING HYDRAULIC JACK STANDS - CONTINUED |
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 TM 5-2410-233-23
GROUND HANDLING PROCEDURES - CONTINUED
0178 00
OPERATING/ADJUSTING HYDRAULIC JACK STANDS - CONTINUED
b.
If hydraulic cylinders (4) are fully retracted, but
4
8
item is not lowered completely, close control
1
valve on hydraulic pump.
c.
Operate hydraulic pump until a hole in extension
tube (1) and jack stand are in alignment. Install
2
pin (7) in this hole for each jack stand.
d.
Open control valve on hydraulic pump to retract
hydraulic cylinders (4). Remove pin (8) from
above each collar (2).
e.
Close control valve on hydraulic pump. Operate
7
pump to extend hydraulic cylinders (4) and raise
collars (2). Do not extend cylinders completely.
Cylinders must be extended to remove weight
3
from lower pins (7).
THROTTLE
VALVES
CONTROL
VALVE
HYDRAULIC PUMP
386-679
f.
Install pins (8) in first hole above collars (2).
g.
Operate hydraulic pump to lift item so lower pins (7) can be removed.
h.
Repeat steps a through g until weight of item is completely off jack stands.
i.
Remove hydraulic jack stands.
RAISING TRACTOR OFF GROUND
WARNING
Ground guide assistance is required to position tracks of tractor on wood blocks. All other personnel must
stand clear, to prevent serious injury or death.
1.
Put four wood blocks in front of each track. Drive tractor up on wood blocks so that both front and rear of tractor are
totally supported by blocks.
WARNING
Tracks must be securely blocked so that tractor will not move backwards when front of tractor is lifted with
hydraulic jack stands.
2.
Engage parking brake. Put wood blocks behind tracks at rear of tractor.
0178 00-4
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