Mueller Roll-Up Door C250 - Manual (Page 14)

14 877-2-MUELLER
3/8˝ x 3/4˝ Bolt
3/8˝ Washer
Mounting
Bracket
Door
Header
Door
Jamb
Chain Hoist
Assembly
Axle Support
Mounting
Plate
Guide
Hand
Chain
Gear
Set Screws
Inside View of
Chain Hoist
Assembly
Chain Hoist
Assembly
Side View
Door
Assembly
STEP 17: CHAIN HOIST DRIVE END
(OPTIONAL) (N/A FOR L250 MODEL)
A Reposition chain hoist assembly on door axle so that the
gear on the chain hoist assembly fully engages the door
ring gear.
B Tighten the two set screws, on the top of the chain hoist,
so that they engage the axle and prevent the chain hoist
from shifting on the axle.
C Feed hand chain over pocket wheel and through hoist.
Connect ends of hand chain, being careful not to twist
chain. Hand chain may be lengthened or shortened as
necessary.
D Install hand chain keeper.