MDP Operation & Maintenance Manual | 27
4. Using a crane, slowly lower and raise the Upper Jaw. If shimmed properly, the Upper Jaw will move with a slight bit of
“drag”. If the Upper Jaw does not move, or has too much drag, replace the .005 inch shim removed on step 1.
5. Measure and shim the left hand end cap using Figure 34.
6. Install the left hand End Cap and torque the Main Pivot Group bolts.
Model Torque
MDP 20/27/35 403 Ft. Lbs. (546 Nm)
MDP 90 693 Ft. Lbs. (940 Nm)
7. Install the front cylinder pin. Use Loctite 263 on the cylinder pin bolt.
CHECK END PLAY
1. Grease each tting on the Main Pivot Group (See “Lubrication” on page 17).
2. Set a dial indicator against the Upper Jaw and zero it.
3. Using a pry-bar, pry the left hand side of the Upper Jaw towards the thrust washer, as shown in Figure 36.
4. Pry against the right hand side of the Upper Jaw. The dial indicator should not move more than .005 inches.
Shim Right Hand Side
FIGURE 35
Pry-Bar Location
FIGURE 36
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