Sigma 880 Projector User Manual


 
4.13
MAINTENANCE INSTRUCTIONS
Place the drive wheel in the lower half of the control crank housing making sure the spacer
rings are between it and the wheel bearings if applicable.
Assemble the two brake jaws, brake bearing and brake arm. The angled sides of the brake
jaws should be facing the retract side of the control crank housing.
Place the upper control crank housing over the assembly while keeping them level and press
them together.
Check the control crank mechanism is properly assembled by turning the shaft. It should
spin freely.
Check the operation of the friction brake while holding both halves of the control crank
housing together tightly. If it does not function correctly, check for faulty assembly or
excessively worn brake jaws.
As applicable, mount the control crank housing on the frame or handle with the four bind
head screws and stop nuts. Secure the crank arm to the shaft using the
5
/
16in washer
and hex bolt.
For reel type controls, secure the odometer cover to the mounting plate with two bind head
screws. Secure the odometer's reset knob to the shaft by tightening the two Allen head
screws, leaving clearance between the knob and the cover.
After assembly, perform a check to ensure the control crank will turn freely. Set the brake
lever to the ON position and attempt to turn the handle using moderate pressure. Do not
apply excessive force. Run a section of the control cable through the control crank to ensure
the control crank operates easily without snags or resistance.
If applicable, make sure the odometer turns when the crank handle is turned.
If the odometer does not function during this test, check for improper assembly or
damaged parts.
11 Clean the 661 safety connector assembly using a brush and solvent. Ensure the movable
jaws of the safety connector are not excessively loose or worn where they swivel in the clevis
pins. Examine the connector collar for bent or loose connecting pins and excessive wear on
the inner-mating surface. Examine the face of the connector body where the control cable
protrudes and verify that long-term usage has not chamfered the area.
Re-assembly of the remote control unit:
Reattach the remote control conduits to the safety connector assembly. Attach the EXPOSE
sheath to the EXPOSE side of the control crank assembly.
Lay the remote control conduits out in a straight line or a wide loop. Feed the end of
the control cable into the conduit as far as it will go. As the control cable is being fed into
the remote control conduits, feel for any resistance that indicates damage of the remote
control conduit.
Turn the control crank handle in the RETRACT direction until the end of the control cable is
protruding. Screw the safety stop spring onto the end of the control cable approximately
2in (50mm) from the end.
Connect the RETRACT control housing to the control crank housing. Retract the control cable
fully, watching for any binding that may indicate damage to the control housing.
If applicable, reset the odometer to zero with the control cable fully retracted.
Replace the protective rubber cap over the end of the safety connector assembly.