EN-1320
OPERATION AND INSTALLATION MANUAL
CAUTION: CATCH THE BLADES AT ITS SHANK, NEVER AT BLADE TIP.
NOTE:
It is recommended to move the lever "Rn" to feather stop 16, to facilitate servomechanism movement.
(17) Install the carbon block assembly (figure 12-6) onto the lever "Zv" and the beta-ring. Install the washer
and safety with cotter pin 1,6x10.
NOTE: Use new cotter pin each installation.
(18) Connect rod from RPM control system to the lever "Rn" (figure 12-9) and secure.
(19) Connect the control rod from engine to the lever "Bc" in its basic position and secure.
(20) Connect plug to the beta switch and secure.
(21) Adjust the governor according to procedure in this section.
C. Propeller Governor LUN7816
(1) Inspect the governor for damage. Shallow scratches in the governor housing and tool marks around
the mounting bolt areas are only acceptable provided that the governor function is not affected.
(2) Verify installation of spring on the lever "Rn" (figure 12-12).
(3) Verify locking devices of appropriate elements (figures 12-12, 12-13, 12-14).
NOTE: Secure turning bolt, tube cap nut, sockets and closing nut (figure 12-8) after tubing installation.
(4) Verify seals and securing (figures 12-12, 12-13).
CAUTION:
BE CAREFUL AT SECURING ELEMENT 32 (FIGURES 12-13 AND 12-14, LOCKING WIRE AND
COTTER PIN). LEFT THREAD IS MARKED WITH "L".
NOTE: Parts 15, 16, and 32 are adjustable.
(5) With "Bc" lever (figure 12-12) in basic position (guideline on the lever with cam aligns with minimum
flight pitch guideline on the governor scale and the control lever pin touches the stop), verify "Rn" lever
travel between stops 15 and 16.
(6) With lever "Rn" at maximum RPM stop 15 , verify lever "Bc" travel from basic position up to reverse,
when the guideline on the lever with cam is against reverse range on the governor scale. Then move
the lever "Bc" further to safety stop.
CAUTION: Lever "Bc" travel should be free.
(7) Verify the carbon block assembly (figure 12-6) for damage and completeness.
(8) Lubricate the carbon block assembly pins with Aeroshell Grease 5, 6 or 22.
WARNING: REMOVE DAMAGED ASSEMBLY FROM OPERATION!
(9)
Verify functionality of the microswitch "V" (figure 12-12) by moving lever "Zv" in the direction of arrow
(figure 12-13).
(10) Lubricate the bearings of elements 29, 32 and other appropriate surfaces with Aeroshell Grease
5, 6 or 22.
(11) Using a lint-free cloth, either dry or lightly dampened with MEK or acetone, clean the governor
flange and the gear box flange.
61-10-20
PROPELLER CONTROL SYSTEM
(Installation With Jihostroj LUN-Series Governor)
Page 12-11
2019-03-04
