The air cylinder is held in with two clevis pins. Remove these two pins and remove the air cylinder.
The limit switch can be removed by removing the fasteners holding it. Open the box and mark the wires.
Disconnect the electrical wire from the terminal.
Disconnect the electrical cable clamps holding the limit switch cable to the exhaust inlet housing. This will allow
the removal of the housing without damaging the cable.
The temperature probe is screwed into a collar. Turn the probe out carefully without damaging the control cable.
A flow switch is mounted in the housing. Remove it taking care not to damage the control cable.
The exhaust elbow above the exhaust inlet housing must be removed to remove this housing. Remove it following
the tear down procedures in the operators manual.
The exhaust inlet housing is bolted in place around the bottom flange. Remove the fasteners in this flange.
Remove the housing.
The exhaust shutter is bolted to the damper rod. Remove the bolts that hold it to the rod. Loosen the lock collars
on the flange bearings and the rod can be removed. Note the position of the actuator arm on the damper rod. It
must be in the same position when assembled.
Remove the flange bearings by removing the two fasteners holding each in place.
Clean all components so that they can be inspected.
Inspect the devises and pins for wear. Repair worn parts or replace as required.
Inspect the damper rod activator that the air cylinder clevis pins to. Check the damper rod bolt holes that hold the
exhaust shutter. The holes may be elongated or damaged.
Repair or replace the damper rod if necessary.
Clean the external parts of the air cylinder. Disassemble the cylinder according to the instructions in Section 3-5-
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