Genie GCL-MJ&MH Manual page 12

Chain Couple
For Hollow Counterbalance Door Shaft:
1) Use non-threaded hole in door shaft sprocket as a guide and
drill a 3/8" diameter hole through one side of the door shaft.
Fig. 6A.
2) Insert clevis pin through sprocket and shaft to hold sprocket
in position.
3) Drill through opposite side of shaft to obtain proper hole
alignment. Fig. 6B.
4) Insert clevis pin through both holes and secure with cotter pin.
Fig. 6C.
For Solid Counterbalance Door Shaft:
1) Insert key into door shaft keyway.
2) Slide sprocket into place and secure with set screws.
To Complete the Installation:
If needed, realign operator sprocket with door sprocket. If you have
excessive door shaft movement, an optional chain tension plate is
available. Fig. 7A & 7B, pg 4.6.
GCL-MJ&MH
Medium Duty Operator
www.geniecompany.com
I
Figure 6A
L
Figure 6B
Figure 6C
08-12
4.5