Propeller Owner's Manual
136
TESTING AND TROUBLESHOOTING
61-00-36
Page 4-3
Rev. 2 Feb/17
1. Operational Tests
CAUTION:
INSTRUCTIONS AND PROCEDURES IN
THIS SECTION MAY INVOLVE PROPELLER
CRITICAL PARTS. REFER TO THE
INTRODUCTION CHAPTER OF THIS
MANUAL FOR INFORMATION ABOUT
PROPELLER CRITICAL PARTS. REFER TO
THE ILLUSTRATED PARTS LIST CHAPTER
OF THE APPLICABLE OVERHAUL MANUAL(S)
FOR THE IDENTIFICATION OF SPECIFIC
PROPELLER CRITICAL PARTS.
A. General
(1) The propeller must be installed on an application that
uses a propeller governor.
(2) Perform the test after propeller installation and before
every flight.
(3) The propeller system must be purged of air and correct
operation verified.
B. Initial Run-Up to Purge Trapped Air
(1) Perform engine start and warm-up in accordance with
the Pilot's Operating Handbook (POH).
CAUTION:
AIR TRAPPED IN THE PROPELLER
HYDRAULIC SYSTEM WILL CAUSE THE
PITCH CONTROL TO BE IMPRECISE AND
MAY RESULT IN PROPELLER SURGING.
(2) Cycle the propeller control throughout its operating range
from low to high blade pitch (or as directed by the POH).
(3) Repeat this procedure at least three times to purge air
from the propeller hydraulic system and to introduce
warmed oil to the cylinder.
NOTE
: Pitch change response on the first operation
from low to high blade pitch may be slow, but
should speed up on the second and third cycles.
(4) Shut down the engine in accordance with the POH.
