OPERATION AND INSTALLATION MANUAL
EN-1320
g) Measure total clearance as follows:
Without gage 1531-042 press lightly the carbon block assembly to one side of the beta-ring (figure
12-16) and measure the total clearance using feeler gauge.
h) After adjustment and clearance measurement, tighten both nuts of the rod 32 and secure with lock wire.
(2) Axial clearance of blocking valve adjustment with element 37 and coupled connection 65.
(for propeller governor LUN7815.02)
a) Move the propeller condition lever in cockpit to position of maximum RPM. The governor lever "Rn"
move then to maximum RPM stop 15.
b) Verify whether rod "Sv" 65 is disconnected from the gate "Sv" (figure 12-17). If not, remove its nut and
pin from the rod yoke. Then eject the rod out from the gate "Sv".
c) Loosen rod "Sv" 65 fix to the governor to don’t obstruct at following works.
d) Move engine condition lever in aircraft cockpit into reverse position. Governor lever "Bc" thus moves to
position as shown on figure 12-18 (guideline at the lever aligns with reverse range at governor scale).
WARNING:
IT IS FORBIDDEN TO MOVE ENGINE CONDITION LEVER INTO REVERSE POSITION WHEN
PROPELLER CONDITION LEVER IS NOT IN MAXIMUM RPM POSITION.
IT IS FORBIDDEN TO MOVE PROPELLER CONDITION LEVER FROM MAXIMUM RPM POSITION
INTO FEATHER WHEN ENGINE CONDITION LEVER IS IN REVERSE POSITION.
e) Press fully the blocking valve with hand and measure clearance in between the cam and setting
element 37 on the lever "Bl" with feeler gauge. Specified clearance is 0,1-0,3 mm (0.004 to 0.012 inch),
as displayed in figure 12-18.
Figure 12-17 Rod “Sv” disconnection
f) If the clearance is not correct, adjust it:
- Loose the nut on element 37 . Hold the element 37 with a screwdriver.
- Adjust the axial clearance by turning element 37 and set it into position according to figure 12-18.
- After adjustment secure the element 37 with nut and safety washer.
g) Lubricate the cam travel with Aeroshell Grease 5, 6 or 22.
h) Move the engine condition lever in aircraft cockpit from reverse position back to minimum flight pitch.
61-10-20
PROPELLER CONTROL SYSTEM
(Installation With Jihostroj LUN-Series Governor)
Page 12-16
2019-03-04
