CONTROLLING.
REMOVAL OF PROPELLER GOVERNOR.
The propeller governor is mounted on the lower left forward portion of the engine crankcase. Remove the
governor as follows:
1. Remove the lower cowl to gain access to the governor.
2. Disconnect the governor control cable end from the governor control arm.
3. Remove the governor mounting nuts and withdraw the governor from the mounting pad. Cover the
mounting pad to prevent foreign material from entering the engine.
INSTALLATION OF PROPELLER GOVERNOR.
1. Clean the mounting pad and the governor drive shaft thoroughly.
2. Coat the mounting gasket with Dow Corning release agent or equivalent.
3. Lubricate the drive shaft with engine oil and install the governor on the mounting pad.
4. Tighten the mounting bolts evenly and tighten to a final torque as shown in Figure 61-3.
5. Connect the control cable to the control arm. Check to be sure the attachment bolt does not contact the
governor body while moving the control arm through its full travel. Clearance should be .03 minimum.
RIGGING AND ADJUSTMENT OF PROPELLER GOVERNOR. (Refer to Figure 61-3.)
1. Start engine; park 90° to wind direction and warm in normal manner.
2. To check high RPM, low pitch setting, move the propeller control all the way forward. At this position
the governor speed control arm should be against the high RPM fine adjusting screw. With the throttle full
forward, observe engine RPM, which should stabilize between 2500 and 2575 RPM. A takeoff must be
conducted during which the engine RPM should reach 2575 RPM and remain steady.
3. If the engine RPM does not read 2575 RPM in flight, the high RPM setting must be adjusted as
follows:
A. Land, shut down the engine and remove lower cowl access plug.
B. Adjust the governor by means of the fine adjustment screw for 2575 RPM. To do this, loosen the
high RPM fine adjustment screw locknut and turn the screw in a clockwise direction to decrease
engine speed or in a counterclockwise direction to increase engine speed.
—NOTE—
One revolution of the fine adjustment screw will increase or
decrease the engine speed approximately 20 RPM.
C. Repeat Step 2 to ascertain proper RPM setting.
D. After setting the proper high RPM adjustment, run the self-locking nut on the fine adjustment
screw against the base projection to lock, and install the lower cowl access plug.
Effectivity 61-20-03
PA-28RT-201T Page 61-06
December 1, 1978
3B1
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
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