Valve Stem Connector; Rack Subassembly; Screw - Johnson Controls Y20EBD Series Technical Bulletin

Valve Stem
Connector
Mounting
Linkage
As received, the valve stem connector (mounted in the spring housing of
the rack subassembly) accommodates a 1/4 inch stem valve. If the valve
has a 3/8 inch stem, replace the connector with the 3/8 inch connector
furnished separately. To change the valve stem connector:
Figure 13: Valve Stem Connector
1. Remove the spring clip and pin from the spring housing as shown in
Figure 13.
2. Insert the connector nut so that the holes line up with the holes in the
spring housing.
3. Replace the pin and spring clip.
Note: It is a good idea to verify which valve stem connector is inserted
prior to installation.
To mount the gear housing and rack assembly to the motor actuator and
valve, proceed as follows:
Gear
Housing
Y20A1-12
Figure 14: Gear Housing Assembly
1. Loosen the two gear cover screws and remove the gear cover and gear
from the gear housing as shown in Figure 14.
M Motor Actuators
Spring
Housing
Pin
Valve Stem
Y20 A1 -1 1
Connector
Hole for

Rack Subassembly

Gear
Y20EBD Valve Linkage for M100 Motor Actuators
—
Spring Clip
Gear
Cover
Gear Cover
Screws
15