ATA 61-08-54
Page 10
Original Issue
2021-08-13
5.
INSTALLATION AND OPERATION INSTRUCTION
a) If applicable: Remove old overspeed governor per aircraft service instructions.
Prepare new mounting gasket, P/N B-20024. Coat gasket with engine oil or equivalent before
installation.
b) Check that mounting studs project a minimum of 31,75 mm (1.250 inch) from face of engine pad.
c) Clean engine pad, studs and mounting hardware before installing new mounting gasket.
Insure overspeed governor drive spline mate correctly with engine accessory drive spline.
d) Attach mounting hardware and torque the (4) mounting nuts to 20-24 Nm (180-220 inlbs).
e) Reconnect cable connector.
f) Ground test check will verify proper RPM setting by pressing the test button. Record RPM. Tests
should be done in smooth air.
g) Also check for oil leaks
– none permitted.
5.1
GOVERNOR REMOVAL
a) Disconnect electric cable from the overspeed governor.
b) Remove mounting nuts and washers.
c) Pat on the overspeed governor to release it and then remove governor from engine pad.
Governor drive and engine pad must be without impurities (metal chips, etc.).
d) If it is necessary clean governor drive and engine pad by appropriate means.
e) Apply the gasket and transport cover to governor base.
f) Record the removal in governor installation record.
g) Perform preservation in accordance with section 8. to prepare for long-term storage.
h) Storage in accordance with section 8.
