Motor Disassembly; Bender Head Disassembly; Greenlee Textron - Greenlee 855 Instruction Manual

Bender Head Disassembly (cont'd)
SQUEEZE ADJUSTMENTS
Proper squeeze adjustment for most 1-1/2" and 2" EMT
and IMC conduit is when the squeeze adjustment arm
(74) is vertical (at middle hole). But variation in conduit
can result in wrinkling or side marking of conduit. If
wrinkling or excessive ovalness occurs, increase
squeeze one position (hole) counterclockwise. If loading
conduit is difficult or if excessive side marking occurs,
decrease squeeze one position (hole) clockwise.
BRAKE
1. Remove eleven screws securing motor cover and
remove cover.
2. Loosen two set screws securing brake rotor and
remove rotor.
3. Remove power supply leads.
4. Remove four screws securing brake housing and
remove housing.
5. Reassemble brake housing and power leads.
6. Use shims to set the brake rotor gap at .002" to
.015" and tighten.
7. Replace motor cover.
OPTICAL ENCODER
1. Remove four screws securing top cover and remove
cover.
2. Remove seven screws securing front guard and
remove guard.
3. Remove nine screws securing motor cover and
remove cover.
4. Rotate motor until both hub set screws are
accessible.
5. Loosen two set screws in the drive hub.
6. Unplug encoder from I/O board.
7. Remove two mounting screws and round plastic
spacers securing encoder and pull off encoder.
Note: Attach a wire or string to the encoder plug at
the I/O board to serve as a retrieval line to pull the
new wire and plug up through the unit.
8. Reassemble in reverse order, noting the following:
• Torque hub set screws to 22 inch-ounces.
• Jog motor and check Quad 1 and Quad 2 LEDs
for ON/OFF pulsing.
Greenlee Textron / Subsidiary of Textron Inc.
855 Smart Bender™

Motor Disassembly

1. Remove optical encoder (see optical encoder
removal).
2. Remove chain (see chain removal).
3. Remove brake (see brake removal).
4. Loosen motor sprocket set screws and remove
sprocket and key.
5. Disconnect motor leads at relay and the ground
wire.
6. Remove five motor mounting bolts and nut.
7. Remove motor.
Note: Attach a wire or string to the motor leads at
the power generation board to serve as a retrieval
line to pull the new wire through the unit.
8. Assemble in reverse order.
37 4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070