Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 629 / 1956

PAGE 1
Feb 28/07 3G13
28-40-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
INDICATING
NOTE: Serial numbers (S/N’s) 4636021 and up incorporate Integrated Engine Instrumentation
Systems. See Chapter/Section 77-40-00 for more information.
1. Fuel Quantity Senders
NOTE: Two fuel quantity senders are mounted in each fuel tank and transmit electrically the quantity of
the fuel in each tank, to the fuel quantity gauge/indicator mounted in the instrument panel.
The senders are located within the wing tank at W.S. 125.00 and 195.50. Both units are mounted on
pedestals which are part of the forward access covers in the lower surface of the wing tank.
A. Removal
CAUTION: IN S/N’S 4636021 AND UP , INBOARD AND OUTBOARD FUEL QUANTITY
SENDERS IN EACH WING MUST BE REPLACED AS A MATCHED SET.
IN S/N’S 4636021 THRU 4636379, ORDER KIT NO. 766-673 (L.H. WING) AND/OR
KIT NO. 766-674 (R.H. WING) AS REQUIRED. (EACH KIT CONSISTS OF ONE
INBOARD AND ONE OUTBOARD SENSOR.)
IN S/N’S 4636380 AND UP, ORDER KIT NO. 767-521 (L.H. WING) AND/OR KIT NO.
767-520 (R.H. WING) AS REQUIRED. (EACH KIT CONSISTS OF ONE INBOARD
AND ONE OUTBOARD SENSOR.)
NOTE: Kits No. 766-673 and 766-674 can be used in S/N’s 4636380 and up, but
must be installed using sealant as described for S/N’s 4636021 thru
4636379 under Installation, below.
(1) Drain all fuel from the wing tank being serviced.
(2) Ensure electrical power is “OFF”.
(3) Using a temporary marker or tape, mark the sender access cover to indicate aircraft forward.
(4) Remove the sender access cover as follows:
(a) In S/N’s 4636021 thru 4636379, remove the screws securing the access cover. With a
suitable tool, pry the access cover away from the wing, taking care not to damage the
mating surfaces - especially on the wing. When the access cover becomes free, carefully
lower the cover and sender out of the wing until the electrical connection can be reached
and disconnected.
(b) In S/N’s 4636380 and up, remove the screws securing the access cover and carefully
lower the cover and sender out of the wing until the electrical connection can be reached
and disconnected.
(5) Note the position of the sender unit to its mounting pedestal prior to removing the sender from
the access cover/pedestal.
B. Installation
(1) Install sender unit on its mounting pedestal on the bracket (if previously removed). Ensure the
sender unit is properly positioned on the bracket.
(2) Connect the electrical leads (from inside the tank) to the sender assembly.
CAUTION: ENSURE THAT WIRES ARE ROUTED ON FORWARD SIDE OF SENDER
PRIOR TO SECURING SENDER PLATE TO WING.
(3) In S/N’s 4636021 thru 4636379, ensure that the sender unit/access cover is properly
positioned in relation to the wing, apply Products Research Co. (PRC) PR1428-B-2 (or
PR1403G-B-2) sealant and install the sender unit/access plate on the wing with screws. Allow
sealant to cure 72 hours before refilling tanks.
(4) In S/N’s 4636380 and up, ensure that the sender unit/access cover is properly positioned in
relation to the wing, and install the sender unit/access plate with screws. Torque the screws per
Figure 1, 28-10-00.