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GENERAL MAINTENANCE
ARM MAINTENANCE
Check for wear of the replaceable cutters (dg3 and dg4). If the cutters no longer touch,
they must be replaced. The diagram below shows new (CY) and worn (CZ) cutters.
FRAME MAINTENANCE
Inspect frame welds for cracks or other deformities.
FRAME CRACK REPAIR
1. Drill 3/16” (5 mm) hole through the plate at the end of the crack to prevent further
crack propagation.
2. Grind out the crack and weld as shown. Use AWS E7018 or equivalent welding rod.
3a. For plate sizes up to 3/4” (20 mm) thick, use the weld joint shown below:
3b. For plate sizes over 3/4" (20 mm) thick, use weld joint shown below:
4. Grind weld flush as shown:
22 – Direction of Grinding
23 – Direction of Principle Stress
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