854DX Electric Bender
Greenlee / A Textron Company
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
12
Service Instructions
(cont’d)
d. Re-zero the bender after bender assembly is
complete minus the shoe:
• Position the drive sprocket so that the spoke
with two holes is around the 3 o’clock position.
• Accurately align the hole now at the 12 o’clock
position with the round centering hub behind
the sprocket.
• Set the zero point to memory by pressing and
holding the CLEAR button on the pendant and
then pressing the JOG button simultaneously.
Motor
1. Remove the outer control box (refer to previous
instruction).
2. Pull off the two motor leads from the circuit board
noting their orientation.
3. Disconnect the SealTite connector at the motor.
4. Remove the four screws attaching the motor to
the gearbox. (If access to the front inside screw is
not attainable with a 7/16" flex socket or stubby
wrench, access can be gained by removing the front
sprocket assembly and the front guard backing
plate.)
5. Pull off the motor while feeding the motor leads out
of the SealTite conduit.
6. Reassemble in reverse order noting the following:
a. Fitting the keyway between the motor and
gearbox may require staking it to keep it in
place.
b. For easiest fitting of the SealTite connector,
rotate the motor into the connector before fitting
the motor mounting screws.
Gearbox (Option 1)
1. Remove seven screws and rear chain guard.
2. Remove connecting link and rear chain.
3. Loosen the two set screws securing the drive
sprocket on the gearbox and push the sprocket
inward.
4. Slide the collar inward and pry off the C clip.
5. Remove the collar and sprocket.
6. Loosen the four screws securing the gearbox to the
frame.
7. Slide the gearbox downward (gravity may have
already done this) and remove it by pulling the
screw heads through the keyholes in the frame.
8. Reassemble in reverse order noting the following:
Slide the gearbox fully upward after installing the
chain and tighten the mounting screws to tension
the chain.
Note: The gearbox and motor can be removed as a unit
by removing the two inner motor mounting screws and
following the instructions for disconnecting the motor at
the control box.
Gearbox (Option 2)
1. Remove seven screws and rear chain guard.
2. Remove connecting link and rear drive chain.
3. Loosen the two set screws securing the drive
sprocket on the gearbox and push the sprocket
inward.
4. Slide the collar inward and pry off the C clip.
5. Remove the collar and sprocket.
6. Remove the inner chain guard (refer to previous
instruction).
7. Support the gearbox, remove the four screws secur-
ing the gearbox, and remove it.
