Service Manual
14
Small Rock Valve
Locking Bolt
Tension Nut
Tension Nut
Setting Disc
Replacement of Cutting ring and
Kidney seal
CAUTION!
Under no circumstances should you
allow the kidney seal to be run with a dry hopper.
This will destroy the kidney seal and is the
primary cause of premature wear encountered at
the outlet side of the Rock Valve. If you will be
repairing the Rock or troubleshooting a problem,
always fill the hopper with water to the top of the
Rock Valve before switching.
1. Remove the Locking Bolt from the Tension
Nut.
2. Loosen the Tension Nut.
NOTE: It’s ok to remove the Tension Nut with
a wrench, but it must never be tightened more
than hand tight.
3. Remove the Tension Nut.
4. Remove the Setting Disc.
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Summary of Contents for SP ROCK
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