Form ASI-PC6-Engine Preservation (Engine Inactive for Periods Exceeding 90 Days)
Reissued: 2
Revision: 1
Date: July 2020
Page 2 of 3
NO.
DESCRIPTION
TASK NO.
MECH.
ENG. RII
(i) With ignition system OFF, fuel condition lever to GROUND-IDLE and
power control lever to TAKE-OFF, carry out normal motoring run until
all preservative oil is displaced. During motoring run, move power
control lever from TAKE-OFF to GROUND-IDLE and back to TAKE-
OFF and fuel condition lever from GROUND-IDLE to OFF and back
to GROUND-IDLE to displace fuel from system.
N/A
(j) After motoring run, check to see if preservative oil is coming from
opened fuel line. If not, repeat motoring cycle until preservative oil
flows from opened fuel line.
N/A
(k) Return power control lever to GROUND-IDLE and fuel condition lever
to OFF. Reconnect fuel supply to oil-to-fuel heater and fuel line to
flow divider inlet.
N/A
(l) Install caps, covers and plugs as necessary to prevent entry of
foreign material and accumulation of moisture.
N/A
Engine Inactive For Periods Exceeding 90 Days
2.
CAUTION:
OBSERVE STARTER MOTOR OPERATING LIMITS.
(REF. STARTER MANUFACTURER’S MANUAL).
(a) Close normal fuel supply shutoff valve and motor engine with starter
until oil pressure and Ng are indicated. Disengage starter.
N/A
(b) Place suitable container under the engine.
N/A
(c) Drain engine oil.
N/A
(d) With drains open, motor engine (Ref. 71-00-00,
ADJUSTMENT/TEST) to permit scavenge pumps to clear engine,
indicated by cessation of steady stream of oil from drains. To prevent
excessive operation with limited lubrication, limit rotation to shortest
possible time to do complete draining.
N/A
(e) Remove oil filter element (Ref. 79-20-02) and allow to drain.
N/A
(f) Let oil to drain to a slow drip, approximately one drip per half hour,
then install oil filter and close drains.
N/A
(g) Remove covers from accessory drive pads and spray exposed
surfaces and gearshafts with engine oil (PWC03-001). Replace cover
plates.
CAUTION:
COMPOUND MUST NOT TO BE APPLIED TO ANY
BOLT THREADS USED TO RETAIN ACCESSORIES.
THESE THREADS MUST BE COATED WITH
REGULAR ENGINE OIL AS REQUIRED BY NORMAL
TIGHTENING PROCEDURES. UNDER NO
CIRCUMSTANCES MUST THE COMPOUND BE USED
IN, OR PERMITTED TO ENTER ANY AREA WHERE IT
COULD CONTAMINATE THE ENGINE LUBRICATION
SYSTEM.
N/A
(h) Coat all external flanges, bolts, and studs with compound (PWC09-
003). In particular, pay special attention to the RGB and compressor
inlet case flanges.
N/A
(i) Install caps, covers and plugs, as necessary to prevent entry of
foreign material and accumulation of moisture.
N/A
(j) Tag oil filler cap with date of preservation and enter date and type of
preservation in engine log book.
N/A
(k) Install humidity indicator in air inlet and exhaust of engine
compartment. Cover with suitable airtight moisture barrier. Provide
inspection windows at each end for observation of humidity
indicators.
NOTE:
Inspection of a preserved unit should be carried out every two
weeks if aircraft is stored outside, or every 30 days if
aircraft is stored inside. If relative humidity, as indicated on
humidity indicator, is less than 40 percent, no further action
is required. If humidity indicated exceeds 40 percent,
desiccant bags must be replaced or reactivated (Ref. Para.
7. D.).
N/A
Содержание PILATUS PORTER PC6
Страница 2: ...MAINTENANCE PROGRAM PILATUS PC 6 DOCUMENT NUMBER SAP 27 REISSUE 2 REVISION 1 JULY 2020...
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