Piper Dakota - Functional Check of Ice Detector Probe; Installation of Ice Detector Probe; Removal of Ice Detector Probe

REMOVAL OF ICE DETECTOR PROBE (figure 71-5)
1. Remove engine cowl.
2. Probe is mounted in carburetor just below throttle valve. Remove safety wire and unscrew probe
carburetor. Measure and note how far probe extends into carburetor.
3. Where wires for probe come off engine mount, remove wire insulation sleeves; make note of
respective interconnects and disconnect wires. Remove wire clamp.
4. If engine is to be operated with probe removed, install a suitable plug.
INSTALLATION OF ICE DETECTOR PROBE (figure 71-5)
1. If a plug has been installed, remove plug from carburetor housing.
—CAUTION—
Do not bend probe components.
2. Insert probe into carburetor housing and tighten finger tight, then 1/4 turn more with a 3/8 inch short
handle open-end wrench.
—NOTE—
When tightened, index mark on probe housing should face
towards carburetor air inlet. This will position probe face into
carburetor air stream. It may be necessary to use a certain
number of AN960-416L shim washers to position probe properly.
3. Connect appropriate wires and position sleeves over connectors. Tie sleeves with #6 electrical lacing
twine.
4. Position wire clamp and secure with appropriate hardware.
5. Secure probe with MS20995-C32 safety wire.
FUNCTIONAL CHECK OF ICE DETECTOR PROBE
1. Set aircraft master switch ON.
2. Set ice detector system ON.
3. Adjust sensitivity knob until red ice light goes out.
4. Turn the ice detection system OFF, then ON. The red light should flash on then off indicating all
components are operating normally.
71 - 60 - 00
Page - 71-15
Reissued: August 1, 1986
2I6
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL