DeZURIK
D10456 Page 14 August 2012
Replacing Handwheel or Wrenching Square with
Chainwheel
Refer to Figure 7 for component identification.
G_-6A and G_-12A (3” - 12” valves)
1. Support the actuator shaft with a solid surface, drive out the pin (B2), and remove the
handwheel (B3) or wrenching square (B11) from the actuator shaft.
2. Slide the collar (B7) onto the actuator shaft
3. Assemble the bearing (B6), chain guide (B5) and the chainwheel (B4) onto the actuator shaft.
4. Align the second pin hole in the actuator shaft and the pin hole in the chainwheel hub. Support
the hub of the chainwheel with a solid surface and drive the connecting pin (B2) into position.
See Figure 7 for location of connecting pin.
The connecting pin securing the chainwheel hub to the actuator shaft could
potentially shear allowing the chainwheel to disengage from the actuator shaft
and cause personal injury or equipment damage.
A retaining pin at the end of the actuator shaft must be in-place to insure the
chainwheel can not disengage from the actuator shaft.
5. Support the hub of the chainwheel with a solid surface and drive the retaining pin (B2) into the
remaining pin hole at the end of the actuator shaft. See Figure 7 for location of retaining pin.
6. Slide the collar (B7) up to the bearing (B6) and tighten with set screw (B8).
7. Feed the chain (B9) over the chainwheel (B4) and through both openings in the chain guide
(B5).
8. Connect the ends of the chain (B9) with closing link (B10).
G_-12A (14” - 20” valves)
1. Support the actuator shaft with a solid surface, drive out the pin (B2), and remove the
handwheel (B3) or wrenching square (B11) from the actuator shaft.
2. Remove the plastic plugs from the mounting holes on the shaft side of the actuator housing.
3. Slide the adaptor (B16) onto the actuator shaft. Tighten with screws (B17) and lockwashers
(B18).
4. Slide the collar (B7) onto the actuator shaft
5. Assemble the bearing (B6), chain guide (B5) and the chainwheel (B4) onto the actuator shaft.
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