Flowserve QX Limitorque User Manual
Page 39
39
Limitorque QX Electronic Actuator FCD LMENIM3314-00 – 5/11
flowserve.com
NOTE:
Drive sleeve assembly must be removed before inserting washer (#1-8) and small needle bearing (#1-9).
See section 4-8-1 step 1 for drive sleeve removal and section 4-8-2 step 3 for remounting of flat washer and needle
bearing.
Step 2
NOTE:
Before inserting worm shaft the drive sleeve assembly must be assembled per section 4-8-2.
Insert worm shaft into housing meshing with drive sleeve and bottoming out in needle bearing installed in step 1. Note
worm shaft should rotate freely with the drive sleeve and needle bearing.
Step 3
(Special tools required, contact factory for ordering information)
NOTE:
Before pressing in needle bearing (#2-2) rotate worm so the drive is in mid position and off of the stops. If
the drive sleeve touches stops when pressing in needle bearing damage to drive sleeve, stops and/or housing could
accrue.
Lubricate needle bearing (#2-2) and place in housing and around worm shaft.
Using special tools from Flowserve lightly press needle bearing into housing until tool bottoms out. Needle bearing
should be even with housing counter bore. Check that the worm shaft rotates freely and has freedom to be moved in
and out.
Step 4
(Special tools required, contact factory for ordering information)
Lubricate thrust bearing (#2-3) and slide on end of worm shaft with the bigger ID bearing washer going on first.
Place washer (#2-4) over end of worm shaft making sure that the chamfer on washer is facing out (Away from thrust
bearing).
Using special tools from Flowserve slip on round retaining ring (#2-5). Retaining ring must engage in worm shaft
round groove and fit inside the chamfer on washer (#2-4).
Step 5
Place ball bearing (#2-8) in housing bore for clutch shaft assembly. Place plate (#2-6) over end of worm shaft and
align cut out notch with housing bore with bearing (#2-8). Fit the screws (#2-7) in plate holes and tighten. Place gear
(#2-10) on worm shaft end and insert key (#2-9). Using retaining ring pliers secure gear and key with retaining ring
(#2-11).