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MODEL 182 & T182 SERIES SERVICE MANUAL
15-16.
REMOVAL AND INSTALLATION OF COM-
as tubing is removed from wing.
The tubing may be
PONENTS.
(See figure 15-2.)
To remove pitot
removed intact by drawing it out through cabin and
mast, remove four mounting screws on side of con-
right door.
When replacing components of pitot and
nector (18) and pull mast out of connector far enough
static pressure systems, use anti-seize compound
to disconnect pitot line (6).
Electrical connections
sparingly on male threads on both metal and plastic
to heater assembly (if installed) may be disconnected
connections.
Avoid excess compound which might
through wing access opening just inboard of mast.
enter lines.
Tighten connections firmly, but avoid
Pitot and static lines are removed in the usual man-
overtightening and distorting fittings.
If twisting of
ner, after removing wing access plates, lower wing
plastic tubing is encountered when tightening fittings,
fairing strip and upholstery as required.
Installation
VV-P-236
(USP Petrolatum), may be applied sparing-
of tubing will be simpler if a guide wire is drawn in
ly between tubing and fittings.
15-17.
TROUBLE SHOOTING--PITOT-STATIC SYSTEM.
TROUBLE
PROBABLE CAUSE
REMEDY
LOW OR SLUGGISH AIRSPEED
Normal altimeter and vertical
Straighten tube, repair or replace
INDICATION.
speed - pitot tube deformed,
damaged line.
leak or obstruction in pitot
line.
INCORRECT OR SLUGGISH
All three instruments - leaks
Repair or replace line.
RESPONSE.
or obstruction in static line.
Alternate static source valve
Close for normal operation.
open.
15-18.
TRUE AIRSPEED INDICATOR.
A true air-
stallation, before tightening mounting screws (7),
speed indicator may be installed.
This indicator,
calibrate the instrument as follows: Rotate ring (10)
equipped with a conversion ring, may be rotated until
until 105 knots on adjustable ring aligns with 105 knots
pressure altitude is aligned with outside air tempera-
on indicator.
Holding this setting, move retainer (9)
ture, then airspeed indicated on the instrument is
until 60°F aligns with zero pressure altitude, then
read as true airspeed on the adjustable ring.
See
tighten mounting screws (7) and replace decorative
figure 15-2 for removal and installation.
Upon in-
cover.
SHOP NOTES:
15-9
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Troubleshooting
