Flowserve QX Limitorque - Manual (Page 41)

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Limitorque QX Electronic Actuator FCD LMENIM3314-00 – 5/11
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4.8.1 Drive Sleeve, Mechanical Stops, Encoder Shaft Removal.
NOTE: Baseplate (#3) must be removed to remove drive sleeve, see step 4-6-1. Washer ((#1-8) and needle bearing
(#1-9) removed in section 4-7-1 step 2 when removing worm shaft.
Step 1, Drive sleeve removal.
c WARNING: Potential to operate while dangerous mechanical parts are exposed during subassembly removal.
To prevent injury, turn off all power sources to actuator before removing drive sleeve assembly. Power sources
may include main power or control power.
Grab drive sleeve and while rotating back and forth pull out drive sleeve (#1-11). If needed remove insert (#1-10) by
using inserting a screw driver down the center of the insert and prying out the insert.
Step 2, Stop removal.
Loosing screws (#1-14) using a M3 hex key. Using a flat head screw driver rotate the mechanical stops CCW to
remove.
Step 3, Encoder shaft removal.
NOTE: The encoder must be removed before this step. (See Section 5 - Encoder Assemblies)
Using retaining ring pliers remove retaining ring (#1-7). Grab the encoder shaft (#1-6) from the terminal block side of
the housing and pull out. Remove ball bearings (#1-5).
Table 4.19 - Multi-turn Encoder Shaft Subassembly (Item 1-6)
ITEM NUMBER DESCRIPTION QTY.
1 ENCODER SHAFT 1
2 PINION 1
3 ROLL PIN 1
Figure 4.22 - Multi-turn Encoder Shaft Subassembly (Item 1-6)
Step 4 – Encoder shaft seal.
If replacing encoder shaft seal (#1-3) the seal must be pried out using small screw driver.
NOTE: Be careful not to damage the seal bore of the unit housing (#1-1). Seal will not seal correctly if housing seal
bore is damaged.