Changing Roll Sets - RIDGID 918 Manual

Hydraulic system may need air bled after changing fluid.
To bleed hydraulic system, position ram lower than pump
by tipping the machine on its side. Extend and return the
cylinder piston several times to permit air to return to the
pump reservoir.

Changing Roll Sets

NOTI E When changing roll set, always make sure
drive roll and groove roll markings match. Mismatched
parts can make improper grooves and cause leaks. Always
change rolls as sets – do not mix rolls from different sets.
If installed, remove the roll groover from power drive or
threading machine and place on a stable workbench.
Properly support the rolls and shafts while replacing.
Changing Groove Roll
1. Fully retract the groove roll.
2. Fully retract the stabilizer wheel.
3. Loosen groove roll set screw (Figure 24). Grasp
groove roll and remove upper shaft and groove roll
from groover (Figure 25).
4. After changing drive shaft/drive roll, reverse steps to
install. Make sure parts are clean to keep dirt out of
bearings. Lubricate bearings before use.
Figure 24 – Loosening Grooving Roll Set Screw
999-998-946.10_REV. C
918 Roll Groover
Figure 25 – Removing Retaining Shaft and Groove Roll
Changing Drive Shaft/Drive Roll
The 918 has two styles of drive shaft. A one piece drive
shaft (used on the 2"-6" and 8"-12" sizes) and the two
piece unit consisting of a drive shaft and interchangeable
drive roll (used for the 1", 1
sizes). See Figure 26.
Drive Roll Drive Shaft
Figure 26 – One Piece Drive Shaft (Top), Two Piece Drive
Shaft (Bottom)
1. Remove the groove roll.
2. Manually rotate the drive shaft while applying pressure
to the spindle lock pin until the lock pin engages the
spindle lock hole in the driveshaft.
Changing Drive Shaft
3. With the spindle lock engaged, use the box wrench to
remove the drive shaft bearing retaining nut (Figure
27).
4. Release pressure on the spindle lock pin, allowing to
retract.
5. Remove the drive shaft from the front of the groover.
6. Reverse steps to install. Make sure parts are clean to
keep dirt out of bearings. Lubricate bearings before
use.
1 / " to 1 1 / " and 2"-6" Copper
4 2
Bearing
Bearing
Retaining Nut
Hex Bolt
17