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TM5-2420-222-34
14-10.
BACKHOE STABILIZER AND BUCKET VALVES REPAIR (Con’t).
NOTE
Valve and valve body are a matched set. If either part is damaged, both must be
replaced.
7.
Inspect valve for burrs and rough spots.
8.
Inspect all other metal parts for cracks, breaks, and abnormal bends. Inspect threaded parts for damaged
threads.
c.
REPAIR
1.
Remove rough spots or burrs from valve (12) using 600 grit abrasive cloth.
2.
Restore damaged threads using pipe threading or screw threading set.
d.
ASSEMBLY
1.
Install fluid flow restrictor (22) in place on spring (23).
2.
Coat fluid flow restrictor (22) and spring (23) with hydraulic
fluid. Install in place on valve (12).
3.
Coat new preformed packing (21) with hydraulic fluid and
install in place on spool plug (13).
NOTE
Ensure that sealing surfaces are
clean
before
applying
thread
sealing compound to spool plug.
4.
Apply thread sealing compound to threads of spool plug
(13).
5.
Wrap valve (12) in clean rags and place in vise with caps.
TA701583
14-53
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