Quantcast INSPECTION/REPAIR - TM-9-2350-238-20-20221

 

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MAINTENANCE OF BOOM CYLINDER HYDRAULIC LINES AND FITTINGS.
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TM-9-2350-238-20-2 Crane (CAB) Components Recovery Vehicle Full-Tracked: Light Armored M578 (
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INSTALLATION - TM-9-2350-238-20-20222
TM
9-2350-238-20-2
NOTE
8 Remove  two  hexagon  head  capscrews
(21), two hexagon plain nuts (22), two
The vehicle hydraulic system is of
Iockwashers
(23),
and
angle
bracket
(24)
the open center type and has
pressure  only  when  the  hydraulic
from
boom
cylinder
tube-to-hose
manifold (3).
pumps are operating.
1 Disconnect
two
boom
cylinder
hose
as-
9 Remove  eight  hexagon  head  capscrews
(25),  eight  Iockwashers  (26),  and  four
semblies (1) from two boom control
split-flange
clamp
halves
(27)
securing
cylinder  assemblies  (2)  and  boom  cylinder
two  counterbalance  manifold  tube  as-
tube-to-hose
manifold
(3).
semblies (28) to manifold assembly
2 Remove
two
tube
nipples
(4),
two
pre-
counterbalance
(29).
formed
packings
(5),
two
tube
nipples
(6),
10 Disconnect
two
counterbalance
manifold
and two preformed packings (7).
tube assemblies (28) and remove two
preformed  packings  (30)  from  manifold
3 Disconnect
two
boom
cylinder
hose
as-
assembly
counterbalance
(29).
semblies (8 and 9) from two boom control
cylinder
assemblies
(2).
4 Remove
two
tube
elbows
(10),
two
tube
DISASSEMBLY
fitting locknuts (11), two packing retainers
(12), and two preformed packings (13)
Refer
to
for
complete
disassembly
from two boom control cylinder assem-
of all hydraulic lines and fittings.
blies (2).
5 Disconnect
boom
cylinder
hose
assembly
INSPECTION/REPAIR
(8) from tube elbow (14). Remove tube
fitting locknut (15).
1 Check
for
broken,
damaged,
or
missing
parts.
6 Remove
four
hexagon
head
capscrews
(16),  four  Iockwashers  (17),  and  two  split-
2 Repair  is  by  replacement  of  authorized
flange  clamp  halves  (18)  securing  manifold
parts  (TM  9-2350-238-24P-2).
to elbow tube assembly (19) to boom
cylinder tube-to-hose manifold (3).
REASSEMBLY
7 Disconnect manifold to elbow tube assem-
bly (19) from boom cylinder tube-to-hose
Refer
to
for
complete
reassembly
manifold (3). Remove preformed packing
of all hydraulic lines and fittings.
(20).

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