Remove the sliding tool changer and turret assembly covers.
Change Parameter 76 from 500 to 50000 (so you will not trip on a low air pressure alarm).
Remove the air line.
Put a 3/4" wrench on the bolt at the end of the air cycle. Pull down (-X) until the turret is fully unclamped.
Place a block snugly between the back of the turret shaft and the casting to keep the turret shaft from shifting.
Caution: If the shaft moves back when the turret is disconnected the ball bearings in the turret cam may fall and have to be replaced before the turret can be reassembled.
Remove the four or eight bolts from the turret retainer and remove the retainer.
Note: If a shaft extension is available install it at this time. Using the extension gives you greater movement of the turret and allows you to remove and easily install the key, washers and needle bearings.
Caution: The turret is heavy and could be slippery.
Remove the turret from the shaft.
The two washers, needle bearing, and key should be removed from the shaft and put aside at this time.
Put a small amount of grease on one side of the washers.
Place the washer on the surface of the turret and center it using your fingers. Be sure to keep grease off the surface facing the needle bearing.
Put a small amount of grease on both sides of the second washer.
Place the washer on the spring retainer on the lip of the turret shaft. Clean any grease that may have gotten on the shaft.
Place the needle bearing on the lip and stick it to the washer. Be sure the other surface of the bearing is clean and free of grease.
Put a small amount of grease on the turret key to hold it in place.
Place the turret on the shaft. (align the turret key)
Note: Check that the turret key did not fall off. Check that the washer is centered on the turret. Check that the washer and needle bearing are still on the shaft lip.
Slide the turret fully on the shaft.
Replace the turret retainer and snug the four bolts.
Note: Check the turret "0" ring. If you can see either the washer or the needle bearing they have slid off the shaft. Return to step 7 of the turret removal section.
Tighten the four or eight turret retainer bolts.
Remove the brace from between the turret shaft and the casing.
Connect the air. The turret should clamp.
Change Parameter 76 back to 500.
Exercise the tool changer to verify proper operation.
Replace the turret assembly and sliding tool change covers.