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TROUBLE SHOOTING
TROUBLE
PROBABLE CAUSE
POSSIBLE REMEDY
1 Ruptured "0" ring or porous
1 Replace "0" ring or complete
1 External leakage through
casting.
valve assembly.
valve cap vent hole.
2 Spool stuck in spool cap
2 (A) Replace spool assembly.
2 Failure to tilt forward.
direction.
( B ) Inspect orifice for
obstruction; clean out
o r i f i c e or replace body.
3 Chatter during forward tilt.
3 Oversize orifice.
3 Replace entire assembly.
Fig. 13342
5-93
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