SIGMA 150Ci - Manual (Page 42)

MAINTENANCE INSTRUCTIONS
4.12
Clean the interior of both remote control conduits by pouring 4-5oz (100ml) of clean
solvent into one end. Use compressed air to blow the solvent through the entire length of
conduits into a clean white cloth attached to the opposite end. Repeat this cleaning process
until the solvent blown through the conduit comes out clean. Use the compressed air
to thoroughly dry the interior of the conduit. Residual solvent left in the remote control
conduit will dilute the lubrication applied to the remote control cable diminishing the
protective qualities.
Check the swage fittings to ensure the threads are not stripped and are clean. Using your
hands, attempt to twist or rotate the swage fittings off the control conduits. If any
movement is possible, the control conduit must be removed from service and new swage
fittings must be installed.
10 Remove the crank arm from the control crank assembly by removing the
5 /
16
in
hex bolt and washer.
While wearing safety glasses, carefully remove the control crank assembly from the handle
or frame by unscrewing the four bind head screws from the stop nuts.
Separate the two halves of the control crank housing.
CAUTION
Ensure the cable adapters stay in the bottom control crank housing during separation.
Care should be taken to avoid losing control of the tensioned wear strip that may fly out
during separation of the control crank housing. This is the reason why safety glasses
must be worn.
Disassemble and degrease the drive wheel, wear strip, the two cable adapters, the two
brake jaws, the two halves of the control crank housing and brake bearing. The wheel
bearings may be left in the control crank housing during cleaning, but care should be taken
not to lose the spacer rings that fit between the wheel bearings and the drive wheel as
applicable. Clean and inspect all parts for damage or wear and replace as necessary.
If applicable, remove the reset knob of the odometer by loosening the two Allen set screws,
then remove the odometer cover by removing the two bind head screws that fasten it to the
mounting plate. Do not disassemble the odometer.
Clean the helical gear of the odometer with solvent using a brush to dislodge any material
between the gear teeth. Check the odometer for proper operation: turning the gear should
turn the odometer but the odometer shaft should still be able to turn when the gear is held
fixed (for zeroing the odometer).
Clean the drive wheel in solvent using a brush to dislodge any dirt between gear teeth.
Inspect the drive wheel's gear teeth looking for broken or bent teeth. If the drive wheel has
broken or bent teeth, use a file to grind the tooth flush with the drive wheel. Up to three
consecutive teeth can be missing from the drive wheel before a replacement is required.
Light rust may be removed from the wear strip using fine sandpaper and machine oil.
Lightly grease the drive wheel hub, wheel bearings and the wear strip before reassembling.
Place one of the cable adapters in the lower control crank housing. Place one end of the
wear strip against the cable adapter then fit the rest in the track of the housing. Fit the
other cable adapter in place to retain the wear strip.
CAUTION
Wear safety glasses when inserting the wear strip. It will be under tension and could
suddenly fly out during assembly.