Turbocharger Decoking; Induction System Air Filter; Removal Of Air Filter; Exhaust Waste Gate Diagram - Piper Navajo Chieftain PA-31-350 Service Manual

TURN THIS SHAFT TO ADJUST FOR
CLOSED POSITION OF BUTTER-FLY
VALVE. SEE NOTE.
PIPER NAVAJO SERVICE MANUAL
2
NOTE: ALL ADJUSTMENTS TO WASTEGATE MUST START
FROM THE CLOSED POSITION FIRST THEN TO THE
OPEN POSITION.
TURN THIS SCREWTOADJUST FOR
OPEN POSITION OF BUTTER-FLY
VALVE. SEE NOTE.
VALVE
CLEARANCE
TIO440-
A AND J SERIES
MOUSE MILK OR WD-40
A
.023- .037
.730 -. 750
TI0-540-
F SERIES
.007 - .022
.730 - 750
Figure 8-9. Exhaust Waste Gate-
8-52. TURBOCHARGER DECOKING.
Mouse Milk, penetrating oil, or equivalent, may be used for decoking the turbine and compressor drive
shaft by the following procedure:
a. Disconnect the oil inlet and outlet lines from the turbocharger and allow all oil to drain.
b. Cap the oil outlet port on the turbocharger.
c. Pour the Mouse Milk into the oil inlet port of the turbocharger and allow the unit to soak overnight.
d. Drain all Mouse Milk from the turbocharger and flush the unit with engine oil.
e.
Prime the turbocharger in accordance with Paragraph 8-36.
8-53. INDUCTION SYSTEM AIR FILTER.
8-54. REMOVAL OF AIR FILTER.
a. Remove lower engine cowl. (Refer to Paragraph 8-6.)
b. Remove the filter attachment brackets located on the right, left and aft sides of the filter plenum by
removing the screws on the outside of the plenum and then remove the brackets from the inside of the plenum.
c. Remove the filter.
Reissued: 9/23/80
POWERPLANT
217