MHP Operating & Maintenance Manual
19
MAINTENANCE
BUILD UP & WEAR PLATES
As the jaws become worn from use, the worn areas
will need to be built up to prolong the life of the
attachment. Some areas of the jaw have wear plates
that protect commonly worn surfaces and reduces the
need to build up and hard-surface.
• Wear safety equipment when welding. This
includes eye protection, hard hat, steel
toe shoes, gloves, hearing protection and
respirator.
• Do all work in a well ventilated area.
CHECKING AND REPLACING WEAR
PLATES
Wear bars are welded into the jaw and must be
replaced after they have worn down to 1/4 their
original thickness.
Using the MHP parts manual, ensure you have
ordered the proper wear plate kits.
Installing Wear Bars
1.
Preheat the area around the wear bar to 250° to
300° F.
2.
Remove the worn wear bar.
3. Fit the new wear bar into the receptacle.
Note: Wear bars are pre-cut to length and must be
formed to the jaw in the field.
4. Weld the wear bar into place.
5. Cover the weld with a heat blanket and allow it to
cool slowly.
WEAR PLATE LOCATIONS
Figure 24
