Service Manual
12
Small Rock Valve
B
Inlet Housing Lining
Cutting Ring
Rock Valve
Pressure Spring
Cording MUST be to
outside when installed
Put seam on top
Mounting a New Pressure Spring
If the Pressure Spring has to be replaced, remove
the old spring and clean the vacant area
thoroughly to clear it of concrete residue. If dust
and residue is ignored, the new spring cannot be
installed correctly, and the flow of concrete could
pull it out of the groove. Furthermore, the high
pretension resulting from reassembling with
concrete residue in the area of the spring leads to
premature wear of the Cutting Ring and Housing
Lining.
NOTE: Slightly grease the new Pressure
Spring when installing it. The same applies to
the Kidney Seal. Do not use too much grease,
because grease accumulating in the spring
chamber operates as a spacer, increasing the
spring pretension.
Although these components will withstand a
great deal of hard usage, the Pressure Spring
and Kidney Seal should be inspected when-
ever the Cutting Ring is replaced.
Summary of Contents for SP ROCK
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