HydraMaster RX20 NEXTGEN 120 VAC, Owner'S Manual, Page: 51 / 57

Owner’s Manual: 9-4
Ensure the rod is fully seated in the pocket of the
LATCH PLATE.
9. Apply Loctite(B1) to the threads of the SCREW,
¼-20 UNC DOG POINT SET (000-143-735)
and thread the screw into the center hole of the
COLLAR, ROD LOCKING – RX20
(000-020-076) ensuring that the dog point of the
set screw completely enters the blind hole in the
rod. Torque the set screw to 45-55 In-lbs.
(see Figure 9-5)
10. Actuate the locking mechanism several times by
pulling up on the knob and releasing it to ensure it
operates smoothly without binding.
11. Using a pair of needle nose plyers, insert a PIN 1/16” X ½” LG COTTER S/S
(000-103-021) into one of the two holes in the center tower of the COLLAR, ROD
LOCKING – RX20 (000-020-076) to lock the SCREW, ¼-20UNC DOG POINT SET (000-
143-735) into the COLLAR. The two holes are different distances from the rear of the set
screw. Use whichever hole is closest to the rear of the set screw, but will allow the cotter
pin to be inserted all the way through the lock collar. Once installed, bend the ends of the
cotter pin over so it will not fall out.
TRANSPORT AND/OR STORAGE
Whenever your RX20 is transported or stored, it is recommended that the cleaning head
(star assembly) be removed. The machine will then sit flat on the floor and remain more
stable, especially during transport.
Figure 9-5. Reinstall dog point
set screw