22
PI-078
June 2021
6.2 ASSEMBLY
1. Ensure the new mandrel (3a), flange bushing (3c), and rotor (5) are
clean.
2. Apply a light coat of o-ring lube to o-rings to reduce friction and
ease installation. Install new o-rings (3f, 3g) onto the flange
bushing (3c). See Figure D for proper orientation of o-rings when
installed.
NOTE:
O-ring (3g) color subject to change.
Figure D
3. Wet o-rings (3f,3g) on the flange bushing (3c) very lightly with
water or grease. Slide the flange bushing (3c) into the rotor (5). The
head of the flange bushing (3c) should now be flush up against the
back of the rotor (5) with no gap between them.
4. Place the thrust washer (3b) over the flange bushing (3c) on the
bottom surface of the rotor (5).
5. Install the new mandrel o-ring (3e) onto the mandrel (3a).
6. Insert the mandrel (3a) completely into the body (4). It may require
a twisting motion.
7. Install the rotor (5) into the mandrel/body assembly. To ensure
thrust washer (3b) stays in proper location, install with nozzle ports
facing downward and sliding mandrel/body into rotor (5).
8. Install thrust bearing (3d) into groove on front of rotor (5).
9. Screw tow ring (7) onto the threaded end of mandrel (3a). While
holding the mandrel (3a) in place with a ¼” hex key, tighten tow
ring (7) to 25 lbs. ft.
10. Apply Vibra-Tite VC-3 (or similar removable threadlocker) to set
screw (8) and install into threaded hole on side of tow ring (7) using
3/32” hex key.
11. Install the nozzles and plugs in the ports on rotor (5) using a 3/16”
hex key and tighten to 50 lbs. in.
NOTE:
Excessive torquing of nozzles will not enhance seal.
