Technical data

13773-001
61-20
Page 1
PROPELLER CONTROL
1. GENERAL
The Woodward Governor Assembly P/N D210760 is an engine RPM sensing device and high pressure oil
pump. Pressurized engine oil is directed to the propeller hydraulic cylinder or released from the hydraulic
cylinder in response to engine RPM change. Change in oil volume in the hydraulic cylinder changes the
blade angle and returns the propeller system RPM to the value set by the cockpit throttle/propeller control.
The governor is mounted on the lower left forward portion of the engine crankcase.
2. MAINTENANCE PRACTICES
A. Propeller Governor (See Figure 61-201)
(1) Removal - Propeller Governor
(a) Remove engine cowling. (Refer to 71-10)
(b) Disconnect governor control cable end from governor control arm.
(c) Place a drain pan beneath governor to catch oil spillage.
(d) Remove bolts, lockwashers, and washers, securing governor to crankcase.
(e) Remove and discard gasket.
(f) Remove governor from airplane.
(2) Installation - Propeller Governor
(a) Acquire necessary tools, equipment, and supplies.
(b) Lubricate governor shaft spines with engine oil.
(c) Install new gasket over studs on governor mounting pad.
(d) Install governor over studs on to gasket. Secure with washers, lockwashers, and nuts.
Torque nuts to 155-175 inch-pounds (17-19 N.m.).
(e) Install governor control cable to governor control arm.
(f) Install engine cowling. (Refer to 71-10)
(3) Adjustment/Test - Governor Rigging and Low-Pitch Stop Adjustment
(a) Remove engine cowling. (Refer to 71-10)
(b) Perform Throttle Control Adjustment/Test. (Refer to 76-10)
(c) Perform Mixture Control Adjustment/Test. (Refer to 76-10)
(d) Adjust the governor control cable jamnuts so the power control lever in the full forward
position causes the governor control arm to make contact with the governor low pitch con-
trol-arm stop.
(e) Ensure the power control lever has positive clearance to the console slot in both the full
forward and full aft positions.
CAUTION: Engine starting, and shut-down may only be performed by authorized per-
sonnel.
(f) Start and warm up engine. (Refer to Pilot’s Operating Handbook, Section 4)
Description P/N or Spec. Supplier Purpose
Engine oil. - Any Source Lubrication.
30 Nov 2000