Piper PA-34-200T Seneca II, Service Manual

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PIPER SENECA II SERVICE MANUAL
CAUTION: OIL WHICH REACHES THE DEICERS WILL CAUSE RAPID DETERIORATION
OF THE RUBBER. IN COLD WEATHER, EXTREME CARE MUST BE TAKEN
TO SEE THAT ENGINE OIL DOES NOT COLLECT IN CRITICAL PARTS OF
THE SYSTEM AND CONGEAL. CONGEALED OIL WILL CAUSE STICKING OF
THE CONTROL VALVE AND DISTRIBUTOR VALVE. IF STICKING OF THESE
PARTS IS ENCOUNTERED, REMOVE FROM AIRPLANE, CLEAN OUT AND
REPLACE.
NOTE: This operation may be omitted if the boots were installed on the airplane subsequent to the
last previous 100 hour check. On the other hand, if operations are being conducted under
cold weather conditions below 10°F (12°C), the air filters should be cleaned out at each
100 hour check, or more often if difficulties are encountered with valves sticking due to
congealed oil.
14-49. REMOVAL OF BOOTS.
WARNING: CEMENTS AND SOLVENTS USED TO REMOVE AND INSTALL DEICERS ARE
EXTREMELY FLAMMABLE AND TOXIC. EXTINGUISH OPEN FLAMES. AVOID
SPARKS. USE IN WELL-VENTILATED AREA. AVOID SKIN CONTACT AND/OR
PROLONGED BREATHING OF VAPORS. CONSULT MSDS FOR ADDITIONAL
SAFETY INFO.
CAUTION: DISPOSE OF UNUSED MEK AND OTHER CHEMICALS AND SOLVENTS IN A
MANNER CONSISTENT WITH LOCAL LAWS AND/OR ENVIRONMENTAL
PROTECTION AGENCY REGULATIONS.
NOTE: These instructions address the installation, maintenance and repair of the Goodrich standard
Neoprene deicers installed as original equipment in these airplanes. If the newer Estane deicers
have subsequently been installed, consult the appropriate vendor publication.
NOTE: Goodrich Black Standard Pneumatic De-Icer Installation, Maintenance & Repair Manual, ATA
Report No. 30-10-31, provides approved, alternate procedures for removing and installing
Goodrich deice boots. Reference to it is highly recommended. It can be obtained online at
http://www.goodrich.com/TechPubs.
The removal of deicer boots should be done in a well ventilated area to avoid difficulty from the fumes
of the solvents. Materials required to remove the boots are: Turco 388 dried cement remover, Kelite 21,
and a pressure handle squirt can. Proceed as follows:
NOTE: Disconnect line fittings from boot fittings.
a. Starting at one corner of the upper trailing edge of the deicer, apply a minimum amount of solvent
to the seam line while tension is applied to peel back the corner of the deicer.
b. Using a pressure handle squirt can filled with solvent, separate the deicer boot from the surface for
a distance of 4 inches all the way along the upper trailing edge.
c. The area between the deicer and the wing which has now been separated will act as a reservoir for
the solvent, therefore, the deicer can be pulled down towards the leading edge with a uniform
tension.
d. From the center line of the leading edge to the lower trailing edge of the deicer, use the pressure
handle squirt can to soften the bond between the deicer and the wing skin.
e. Use Kelite 2l or Turco 388 to clean the dry cement off the exposed wing area and clean the area
thoroughly with MEK (MethylEthylKetone).
XIV - ACCESSORIES AND UTILITIES 01/01/09
3B22