EN-1320
OPERATION AND INSTALLATION MANUAL
a) Move propeller control lever in cockpit such way, that governor lever “Rn” is not touching maximum
RPM stop.
b) Loose stop 15 - figure 12-29.
c) Loose the nut and adjust the maximum RPM by turning of max. RPM stop screw
15
.
Screw-in = decreasing of RPM
Screw-out = increasing of RPM
One turn (360°) of the stop screw change the RPM approx. about 20 RPM.
CAUTION: Maximum propeller RPM must not exceed 2080 rpm/min !
d) Move propeller control lever to maximum RPM position; governor lever "Rn" must be touching the stop
15. If clearance is found, adjust propeller control lever stop in the cockpit to distance 2-3 mm
(0,08-0,12 inch) from propeller control lever.
e) Secure the stop 15 by nut tightening and using lock wire.
f) Verify this adjustment at next flight.
g) Make a record in the logbook.
Figure 12-29 Maximum RPM stop adjustment
(2) Feather position adjustment
(for governor LUN7815.02)
Governor feather position adjustment is performed with feathering pump LUN7840 installed.
a) It is performed with adjusting the feather stop 16 when:
1 The lever "Rn" doesn’t reach angle position.
2 Time at "MANUAL FEATHERING" exceeds maximum value of 8 s (when feathering pump is
installed).
b) Perform the verification at engine ground test.
c) Remove seal and lock wire from the stop 16 - figure 12-30.
d) Move propeller control lever in cockpit to maximum RPM position, the lever "Rn" is at maximum RPM
stop 16.
WARNING:
BEFORE YOU WILL MOVE WITH PROPELLER CONTROL LEVER, VERIFY ENGINE CONTROL
LEVER, WHICH SHOULD BE AT IDLE STOP. VERIFY FEATHERING PUMP CIRCUIT BREAKER, IT
SHOULD BE SWITCHED OFF!
61-10-20
PROPELLER CONTROL SYSTEM
(Installation With Jihostroj LUN-Series Governor)
Page 12-31
2017-10-06
