Enerpac NC-Series - Manual (Page 3)

3
POSITIONING THE CUTTER HEAD
Incorrect Correct
Figure 1
3.0 DESCRIPTION
All Enerpac Nut Splitters are single-acting, hydraulic-advance,
spring-return units. Hydraulic power can be supplied by hand,
electric, or air-powered pumps capable of 10,000 psi output
pressure.
Enerpac Nut Splitters consist of a two-piece threaded body, cutting
blade, return spring, plunger, oil seal, and CR-400 coupler half.
Spare setscrews, a spare blade and wrenches for removing and
replacing the blade, are included with the nutsplitter. Each blade
is made of high quality steel and can be re-sharpened using a
grinding tool.
4.0 OPERATION
1. Connect the nut splitter coupler to the hose coupler.
2. Firmly tighten the couplers to prevent restricted oil flow.
NOTE: Pump vent/fill cap must be in the “VENT” position for
proper pump functioning.
3. Close the pump release valve.
NOTE: To remove air trapped in the pump, hose, or cutter,
freely advance and retract the cutter blade several times.
4. Place the nut splitter head over the nut.
NOTE: The flat surface of the cutter must rest flush against
one of the nut flats, and the head must rest on a flat surface.
See Figure 1 for correct and incorrect placements.
CAUTION: Improper placement of the nut splitter on
the nut may cause the head to fail.
WARNING: To prevent injury, keep fingers away from
the cutter blade during
splitting operations.
5. Hold the nut splitter in proper position.
6. Operate the pump until the cutter blade cuts through the nut.
NOTE: To avoid damage to the bolt thread, turn off the pump
as soon as the nut is split. See Figure 2 for correct cutter blade
stopping point.
7. Open the pump release valve to retract the cutter blade.
8. Lift the nut splitter off the split nut.
9. Repeat the cutting process on the other side of the nut (180°
from the first cut).
Figure 2
10. Once the nut is completely split, retract the cutting blade.
11. Remove the nut splitter and split nut.
NOTE: Apply a suitable cutting fluid to stainless steel and
hardened steel nuts before splitting to reduce cutter blade
wear and breakage.
5.0 BLADE REMOVAL/REPLACEMENT
1. Open the pump release valve to remove hydraulic pressure
from the nut splitter.
2. Disconnect the hose and nut splitter coupler halves.
3. Remove the setscrew from the side of the nut splitter body.
4. Remove the smaller setscrew from the same hole in the side
of the nut splitter body.
5. Note the position of the blade angle for correct installation
later.
6. Pull the blade out of the cutter body.
7. Inspect the blade edge for cracks, large nicks, and sharpness.
8. Replace the blade if it is damaged.
NOTE: The edge can be resharpened, but avoid removing
more than 1/16" of material and maintain the original cutting
angle.
9. Apply a coat of grease to the blade shaft.
10. Insert the blade shaft-first into the cutter body.
11. Align the blade to the position noted in step 5.
12. Insert the small setscrew and tighten.
13. Insert the larger setscrew and tighten firmly.
14. Connect the cutter and hose couplers.
15. Check cutter operation by advancing and retracting the blade
several times.