16 | MDP Operation & Maintenance Manual
JAW TEETH MAINTENANCE
When the jaw teeth are worn or cracking, performance is decreased and the teeth need to be replaced. MDP
can have Swift-Lock Teeth or Weld-In Teeth, depending on model.
Wear personal protection equipment at all times. This
includes eye protection, hard hat, steel toe shoes,
leather gloves and hearing protection.
Jaw Teeth are very heavy. DO NOT remove a tooth if it is
not supported. The tooth may fall and cause injury.
Replacing Swift-Lock Teeth (MDP 20/27/35/50)
1. Locate at, hard ground and place the attachment on
the ground.
2. Remove the washers on each side of each tooth,
using a grinder.
Note: The washers are welded into place.
3. Use a soft metal drift and a mallet to drive out the
tooth pin.
4. Remove the tooth from the receptacle.
Note: The retainer ring may fall out when removing the
teeth. Do not lose the retainer ring.
5. Insert the retainer ring in its place and insert a new
Swift-Lock tooth.
6. Insert the tooth pin and weld the washers in place.
Note: Insert the tooth pin so that the pin groove will line
up and seat in the retainer ring.
Replacing Weld-In Teeth (MDP 90)
1. Locate at, hard ground and place the attachment on
the ground.
2. Preheat the area around the tooth receptacle to 250°
to 300° F.
3. Using carbon-air arc gouging, remove the weld
material holding the tooth in place.
4. Remove the tooth. Fill and sand gouges, then clean
the tooth receptacle.
5. Fit the new tooth into place.
6. Weld the tooth into place.
7. Cover the weld with a heat blanket and allow it to cool
slowly.
TOOTH PIN
RETAINER
RING
WASHER
Swift-Lock Teeth Removal
FIGURE 17
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