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Disassembly and Reassembly of the Clutch
UOW-T60 Clutch
Disassembly
1. Separate the hammer casing from the hammer casing connector and remove the clutch assembly.
2. Remove the clutch spring, spring retainer, and backup ring from cam guide.
3. Carefully slide the cam ring up and remove the four balls from under it. Now remove the cam ring.
4. Lift the hooked end of the band spring out of the hole in the cam guide and slide it around the cam
guide until the end of the notch pin is exposed. Now remove the notch pin. CAUTION:Do not
bend or stretch the band spring.
5. Remove the retaining ring from the back of the cam guide.
6. Slide the cam and pilot pin out of the cam guide. Remove the pilot pin from the cam.
7. Remove the ball and spring out of the cam guide.
8. Clean all parts thoroughly.
Inspection
1. Cam:Inspect the cam lobes for grooving where they push the balls out against the cam ring.
2. Pilot Pin:Inspect the shoulder that is pushed up against the notch pin for rounding.
3. Notch Pin:Inspect the ends for rounding.
4. Cam Ring:Inspect the inside surface where the balls ride for pitting and grooving.
5. Balls:Inspect for pitting.
6. Spring:Inspect all springs for tension.
7. Replace all worn parts.
Assembly
1. Press the “G” pin into the pilot pin and install the pilot pin into the cam with the square-end up.
2. Put the spring and ball into the cam guide and slide the cam into the cam guide.
3. Install the retaining ring into the back of the cam guide.
4. Install the notch pin into the cam guide and slide the band spring back into place. Now rotate the
cam and make sure the notch pin is pushing the band up.
5. Put a small amount of grease into each of the holes in the cam guide and install the balls.
6. Slide the cam ring down onto the balls.
7. Put the backup ring and spring retainer down onto the cam ring.
8. Install the clutch spring and set the clutch assembly back in the tool.
9. Test the tool.
