Chamberlain C2405C Manuel D'installation page 10

Assembly
STEP 4 Install the Chain
1. Pull the cable around the idler pulley and toward the trolley.
2. Connect the cable to theretaining slot on the trolley, as shown. (Figure1)
a. Push pins of master linkbar through cablelinkand trolley slot.
b. Push master linkcap over pins and past pin notches.
c. Slide the closed end of the clip-on spring over one of the pins.
Push the open end of the clip-on spring onto the other pin.
3. With the trolley against the screwdriver, dispense the remainder of the cable/chain along
the rail toward the motor unit around the sprocket and continuing to the trolley assembly.
The sprocket teeth must engage the chain. (Figure 2)
4. Check to make sure the chain is not twisted, then connect it to the threaded shaft with the
remaining master link.
5. Thread the inner nut and lock washer onto the trolley threaded shaft.
6. Insert thetrolley threaded shaft through the hole in the trolley. Be sure the chain is not
twisted. (Figure 3)
7. Loosely thread theouter nut ontothetrolley threaded shaft.
8. Remove the screwdriver.
Threaded Shaft
c.
b.
a.
Figure 1
10
HARDWARE
Sprocket
Figure 3
Master Link
Inner Nut
Lock Washer
Threaded
Shaft
Outer Nut
Master
Link
Figure 2
Master
Link