Removing And Installing Groove Roll Sets - RIDGID 920 Manual Del Operador

920 Roll Groover
Removing and Installing
Groove Roll Sets
NOTE! As groove dimensions are determined by the roll
set geometry, specific roll sets are required
when grooving the following:
2" - 6" Schedule 10, 40
8" - 12" Schedule 10, 40
14" - 16" Standard Wall (.375)
18" - 20" .250" Wall
22" - 24" .250" Wall
2" - 8" Copper Tubing (Types K, L, M, DWV)
WARNING Make sure power drive is unplugged from
power source before changing the roll sets.
Guards should not be removed to change groove rolls.
1. Loosen the chuck on the 300 Power Drive but do not
remove. This will allow the drive shaft to spin freely so
the stop pin can be engaged.
2. Back off the # 1 / - 20 set screw in the upper roll hous-
4
ing three turns (Figure 18) with the long T-handled hex
wrench provided. DO NOT REMOVE SET SCREW.
Figure 18 – Loosening Set Screw In Upper Roll Housing
NOTE! It may be necessary to lower the upper roll
housing slightly by actuating the pump handle.
This will allow the guard to open enough to
remove the upper roll shaft. It may also be nec-
essary to retract the stabilizer.
3. Lightly tap the upper groove roll shaft from behind out
of the upper roll housing until it clears the guards.
4. Remove the upper roll shaft and upper roll (Figure
19). Be sure the upper groove roll is supported. The
groove upper rolls weigh up to 14 pounds and could
drop suddenly.
Figure 19 – Removing Upper Roll Shaft
5. Engage the locking pin in the drive shaft by manually
spinning the drive shaft (Figure 20). Loosen the
draw bolt (
drive roll.
Figure 20 – Engaging Lock Pin and Removing Drive Roll
Figure 21 – Loosening The
6. Install the desired lower drive roll. Engage the locking
pin in the drive shaft. Tighten the
approximately 150 ft. - lbs. (finger tight plus
Ridge Tool Company
15 / hex) (Figure 21) and remove the
16
/ " Draw Bolt
5
8
5 /
5 /
8
draw bolt to
8
3 / turn).
4
13