Specifications

RotorWay International
Exec 162F Maintenance Manual
SERVICE NOTES:
1. Inspect the main drive sprocket for any noticeable wear around the teeth. First indication of wear will be an abnormal
amount of aluminum flakes and dust in the oil bath and oil lubrication. Contact the factory for further inspection and
instructions.
A. Check sprocket hub for backlash against the main drive shaft. This can be done by grabbing the main rotor shaft
and applying pressure against the standard rotation of the rotor system. Monitor the relationship of the main rotor
shaft to the sprocket hub for any movement. If any movement is apparent, contact the factory.
2. The secondary unit comes as a complete assembly and should not be tampered with or opened at any time. A visual
inspection and a lock up inspection of the overrunning clutch should be done during the pre-flight inspection. Any
other adjustments or work performed must be done by the factory service center at RotorWay, with the exception of
the following:
A. The upper bearing assembly (part no. E23-5001) should have 1 shot of Mystik JT-6 grease every 50 hours.
B. At the 100 hour inspection intervals, inspect the lower secondary shaft. This requires removal of the fan pulley, tail
rotor drive pulley and lower mount bearing from the secondary shaft. Both the fan pulley bearing and the lower
mount bearing should have been Loctited to the shaft during construction. A gear puller and heat will be needed
to remove these bearings. Excessive heat should be avoided, which may damage the shaft or other components
(the shaft can be damaged if shaft temperatures exceed 400 degrees Fahrenheit). Bearings should not be reused
on reassembly. The shaft should be visually inspected for surface imperfections and also by using a dye penetrant,
looking for surface cracks. Recommended penetrant inspection kits are Met-L-Check Penetrant Kit or Magnaflux
Spotcheck Test Kit, available from suppliers such as Aircraft Spruce. Either kit will last for many years. Your local
FBO may also be able to supply the kit or inspect the shaft.
3. The lower bearing, part no. E23-2552, is removed at 100 hour intervals for lower secondary shaft inspection. The
bearing must be replaced at 100 hours; do not re-use the old bearing. See Service Note 10-2B above.
4. Replace the main drive belts at 500 hours of operation, or at 5 years, or on condition, whichever comes first. Shelf life,
or time before entering service, is not included if the belts have not been exposed to the environment and have not
been affected by aging. Conditional replacement includes damage resulting from excessive slipping, oil absorption,
cracking, glazing, abnormal wear, or any other damage.
The main drive belts are replaced by following the procedures listed below. Pay close attention because you will follow
the reverse procedures for reassembly. See also Service Note 10-2B above.
A. Clean the new belts with a clean rag lightly saturated with acetone.
B. Cut old belts off with aviation shears or a sharp knife. Be careful not to damage any of the parts.
C. Remove the radiator assembly (refer to print E30-2000 and E37-2000). Remove the radiator hoses from the
radiator. Plug all water openings. Place the assembly out of the way until reinstallation.
D. Index the fan to the fan pulley assembly and remove the fan from the pulley. Remove the fan pulley assembly from
the shaft by loosening the set screws, removing the snap ring and lowering the pulley. The bearing was installed
with Loctite; use a puller and if necessary apply heat to the bearing to release it from the shaft. CAUTION: Too
much heat can damage the shaft or other components. See Service Note 10-6 for bearing replacement. Remove
any burrs on the shaft caused by the set screws, then remove the tail rotor drive pulley.
E. Remove the two bolts that hold the lower bearing flange to the square drive tube. Then remove the two bolts that
hold the lower bearing flanges together so you can lower the bottom flange, and move it from the square drive
tube.
F. Disconnect the torque link. Loosen the belt tension by backing out the all thread adjustment bolt (part no. E00-
2525) on the upper engine mount clevis. Remove bolts (part no. E00-2524) and lower the upper engine mount cup
(part no. E24-5100) into the upper engine pulley.
G. Remove bolts (part no. E00-2531 and E00-2416). Remove the upper engine mount clevis.
H. Take one of the four belts and slip the belt between the secondary unit and the square drive frame tube. Pull the
belt forward, up and over the pulley. CAUTION: Do not damage the belts. Repeat this procedure with the remaining
three belts. Align all belts in the correct order on both the engine and secondary unit pulleys.
I. Reassemble all parts by following the above procedure in reverse. Follow the belt tensioning procedures shown in
the Construction Manual.
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Rev. 5 6/04