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

Page: 202 / 1956

PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
PAGE 8
Feb 28/07
1I24
12-10-00
8. Electrical System
Servicing the electrical system involves adding distilled water to the battery to maintain correct
electrolyte level (Dry-Charged Lead-Acid -
S/N’s 4636001 thru 4636374 ), checking for any spilled
electrolyte that would lead to corrosion and checking cable connections. The security of all electrical
connections should be checked, as well as the operation of all lights, general condition of the
alternator(s) and starter. All electrical wires should be inspected for chafing and bare wires. For detailed
information on this system, refer to Chapter 24 of this manual.
A. Battery (Dry-Charged Lead-Acid - S/N’s 4636001 thru 4636374 )
Access to the 24-volt battery is gained by opening the forward baggage door and removing the left
floor of the forward baggage compartment.
The battery should be checked for proper fluid level. DO NOT fill the battery above the baffle plates.
DO NOT fill the battery with acid - use water only. A hydrometer check will determine the percent of
charge in the battery.
Inspect overflow sump for presence of battery fluid. Fluid in the sump is not a normal condition and
indicates either a battery or charging system problem. If fluid is present, the electrical system must
be serviced to eliminate the cause and the neutralizer media in the sump jar replaced.
If the battery is not up to charge, recharge starting at a 4-amp rate and finishing with a 2-amp rate.
Quick charges are not recommended.
B. Battery (Valve-Regulated Lead-Acid - S/N’s 4636375 and up )
Access to the 24-volt battery is gained by opening the forward baggage door and removing the left
floor of the forward baggage compartment.
Gill valve-regulated non-maintainable batteries are fully charged when they leave the factory. Non-
maintainable means that this type of battery cannot be opened to add fluid. Periodic maintenance is
still required in the form of boost charging if the battery becomes discharged.
9. Power Plant
Regularly check the engine compartment for oil and fuel leaks, chafing of lines, loose wires and
tightness of all parts. Maintenance instructions for the power plant may be found in Chapter 71 of this
manual and in the appropriate manufacturer’s manuals.
10. Propeller
The spinner, back plate and propeller surfaces should be cleaned and inspected frequently for nicks,
scratches, corrosion and cracks. Minor nicks and scratches may be removed per instructions in
61-10-00 or the appropriate Hartzell Blade Manual (for composite blades see latest revision Hartzell
Composite Blade Manual No. 135). The face of each blade should be painted when necessary with a flat
paint to retard glare. To prevent corrosion, wipe surfaces with a light oil or wax.
In addition, propellers should be inspected for grease or oil leakage and freedom of rotation on the hub
pilot tube. To check freedom of rotation, rock the blade back and forth through the slight freedom allowed
by the pitch change mechanism. Lubricate the propeller at 100-hour intervals per the appropriate
Hartzell Owner’s Manual.
Additional service information for the propeller may be found in 61-10-00.