12
Effective June 2016 -
REPLACING GRINDER IMPELLER AND
SHREDDING RING
“RADIAL CUTTERS”
Note: This is the only disassembly operation permitted in the field.
All other repairs must be performed at an authorized service center or the factory.
STANDARD TOOLS REQUIRED:
Standard socket wrench set.
Standard set of open end wrenches.
Hammer.
Vise grip pliers.
Allen head socket set.
Screwdrivers.
Wire brush.
CAUTION
– Disconnect all power and control wires to motor at the control panel before starting
the disassembly operations. Do not rely upon opening the circuit breaker only.
IMPORTANT
– Pump should be sanitized with bleach before starting work.
Pump should be thoroughly cleaned of trash and deposits before starting
disassembly operations.
Wear protective gloves and clothing.
Always use a rag on the impeller when turning to prevent cutting hands on the
sharp edges of the shredding ring.
DISASSEMBLY OF SHREDDING RING AND GRINDER IMPELLER
1. Hold the grinder impeller by prying against the impeller cutting bar and remove the allen head cap
screw from the end of the shaft.
2. Use a large screwdriver in the slot end of the shaft and tap (counterclockwise) on one of the large cutter
vanes with a hammer. Tap in a counterclockwise direction (thread is right hand).
3. If the impeller removes easily, clean and replace if worn.
4. Make sure the pump impeller has not loosened when the grinder impeller was removed. This can be
checked on reassembly of grinder impeller and shredding ring. The tips of the impeller cutter vanes
should extend 1/8” below the bottom of the shredding ring. If the distance is greater, the pump impeller
has loosened. If the distance is less, the shredding ring is not properly seated.
5. After the volute case has been removed, insert screwdriver in slot end of shaft and tap hammer against
the outer vane of the ductile iron pump impeller (clockwise) to ensure it is threaded tight against
shoulder on shaft.
6. Use large screwdriver to tap stainless steel cutter ring from cast iron volute.
7. Clean all threads with a wire brush and file smooth any nicked threads. Use NEVER-SEEZE or other
graphite compound on threads before replacing grinder impeller.
Summary of Contents for K(H)GS2
Page 15: ...15 Effective June 2016...
Page 16: ...16 Effective June 2016 REPAIR PARTS LIST...
Page 17: ...17 Effective June 2016...
