Maintenance - Page 73
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Replacing jaws guide plates S-JAW, M-JAW
RD2019 A-JAW, D-JAW, S-JAW, M-JAW
REMOVAL OF GUIDE PLATES
Welding must occur in a workshop with proper welding tools. If you must weld
the crusher when it is installed in carrier, consult your carrier dealer for
precautions during welding.
Warning! Support the crusher jaw to prevent it from closing unexpectedly
during maintenance.
1. Position the attachment on level ground.
2. Support the crusher jaws.
3. Check the clearance between crusher jaw and guide plates. Change guide plates
if clearance is more than specified.
4. Cut off the worn part by carbon arc gouging or by gas cutting at the base. Note:
Connect earth cable to the part to be repaired.
5. Repair parent by filling it with welding rod, and finish the surface by grinding.
6. Make edge preparation on the body side.
INSTALLATION OF GUIDE PLATES
1. Tack the new part with welding rod. Note: Connect earth cable to the part to be
repaired.
2. Preheat the jaw and the part to 100 °C (212 °F)...150 °C (302 °F).
3. Perform welding.
4. Close the crusher jaws to make sure that the clearance between guide plates and
upper jaw are right, use grinding machine if necessary.