REPAIR STACK VALVE AND STACK VALVE WIRING HARNESS - Continued.
INSTALL - Continued.
New seals and packings are distorted
during installation. Use care during
installation to prevent damage to seals,
preformed packings, and seal grooves.
Bypass leakage can result from poor
Be careful not to damage preformed
packing when sliding over threads.
Sharp edges of thread can cut or
damage preformed packing. Damaged
preformed packing will cause leakage
and affect performance.
Lubricate preformed packings (15 through 30)
and packing retainers (31 through 40) with
Install preformed packings (15 through 30) and
packing retainers (31 through 40) on valve spool
(8, 9, 10, or 11), safety relief valve (12), or check
valve (13 or 14).
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