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

Page: 197 / 1956

PAGE 3
Feb 28/07
1I19
12-10-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
C. MIL-I-27686 Fuel Anti-icing Inhibitors
CAUTION: ASSURE THAT THE ADDITIVE IS DIRECTED INTO THE FLOWING FUEL STREAM.
THE ADDITIVE FLOW SHOULD START AFTER AND STOP BEFORE THE FUEL
FLOW. DO NOT PERMIT THE CONCENTRATED ADDITIVE TO COME IN CONTACT
WITH THE AIRCRAFT PAINTED SURFACES OR THE INTERIOR SURFACES OF
THE FUEL TANKS.
CAUTION: SOME FUELS HAVE ANTI-ICING ADDITIVES PREBLENDED IN THE FUEL AT THE
REFINERY, SO NO FURTHER BLENDING SHOULD BE PERFORMED.
CAUTION: THIS ADDITIVE SHOULD NOT BE USED AS A REPLACEMENT FOR PREFLIGHT
DRAINING OF THE FUEL SYSTEM DRAINS.
The MIL-I-27686 Fuel Anti-Icing Inhibitor, primarily is an anti-icing agent , however it also has
excellent microbiological sludge deterrent characteristics. It is very soluble in water, and only slightly
soluble in fuel, which mandates that the blending with fuel be accomplished in a precise manner.
Such a device permits injection of the agent into a flowing stream of fuel to ensure even
disbursement. When blending the additive, the concentration should not be less than 0.10 percent
or more than 0.15 percent by volume. Except for the information contained herein and in the Pilot’s
Operating Handbook, the manufacturer’s mixing or blending instructions should be carefully
followed.
D. Draining Fuel System - Complete
Fuel may be drained from the system by opening the valve at the inboard end of each fuel tank. The
drain valve requires the drain cup pin to hold the valve open. The remaining fuel in the system may
be drained through the filter bowl.
3. Brake System
The brake system contains a hydraulic fluid reservoir through which the brake system is periodically
serviced. Fluid is drawn from the reservoir by the brake master cylinders to maintain the volume of fluid
required for maximum braking efficiency. Spongy brake pedal actions is often an indication that the brake
fluid reservoir is running low on fluid or air. When repairs to brake system components or bleeding the
system are required, refer to instructions in 32-40-00.
A. Filling Brake System Reservoir
The brake system reservoir must be filled with hydraulic fluid (MIL-H-5606) to the level marked on
the reservoir. The reservoir, located on the left side of the aft wall of the forward baggage
compartment, must be checked at every 50 hour inspection and replenished as necessary. Access
to the reservoir is through the door on the upper right portion of the nose section. If fluid level is low,
it must be filled with filtered hydraulic fluid (MIL-H-5606). No adjustment to the brakes is necessary,
but they must be checked periodically per instructions given in 32-40-00.
B. Draining Brake System
To drain the brake system, disconnect the supply hose from the fitting on the bottom of the cylinder
and open the bleeder valve at the top of the cylinder. This will empty the piston chamber. Pump the
desired brake pedal to clear the line of fluid. To clean system, flush with denatured alcohol.
NOTE: If brake system is drained, parts replaced, or line connections broken, pressure fill and
bleed system per procedure in 32-40-00. Procedure assures air is not trapped in system.