Specifications
RotorWay International
Exec 162F Maintenance Manual
13
Rev. 1 7/98
Section 4: Tail Rotor Drive
The tail rotor drive of the EXEC 162F utilizes a V-belt design, rather than a drive shaft with gear boxes, to transmit power
to the tail rotor. This design provides a simple and effective drive train with low maintenance.
Reference print: E09-2000
SERVICE NOTES:
1. Remove the two bolts (part no. E00-2405) that attach the idler pulley assembly to the tail boom and slide the idler
pulley mount scissors down and out of the tail boom. (See note 2 below for inspection of idler pulley assembly.) Place
a small amount of grease on each of the mating surfaces and reinstall the pulley in its original position. Tighten the
nuts on the bolts only enough to hold the part firmly. The part should not swing loosely but require slight pressure to
move it. (Refer to Construction Manual.)
2. Tail Rotor Idler Pulley Assembly (part no. E18-2012)
A. Remove the pulley by removing bolt part no. E00-2604.
B. Remove two (2) snap rings.
C. Heat the pulley in an oven or other appropriate means to 225-275 degrees F. CAUTION: Do not exceed 300
degrees F or the heat treatment of the pulley will be affected.
D. Using appropriate tools, fixtures, and presses, press out the old bearing.
E. Let the pulley
air cool, then clean the inner mating service with acetone.
F. Clean the outer surface of the bearing with acetone and position the bearing ready for reinstallation.
G. Apply a thin even film of Loctite #609 to the outer surface of the bearing only. (Do not use your fingers.)
H. Install one snap ring.
I. Heat the pulley to 225-275 degrees and drop the bearing in place. If a press is necessary, use light pressure to
insure contact of the bearing to the snap ring. (When using a press, press only on the outer race of the bearing
and not the inner race.) Wipe off remaining Loctite.
J. Install the second snap ring and let the assembly cool.
K. Check to see that both snap rings have seated completely and that there is no play between the bearing and the
pulley.
L. Install the pulley, make sure the spacers are in their proper place and torque the bolt.
M. Rotate the pulley on its new bearing and check the feel with your fingers for smoothness and ease of rotation.
3. Inspect for wear and anodizing on the pulley. Also inspect for cables and wires that may have shifted or come loose in
the tail boom, allowing them to rub on the pulley.
4. Visually inspect and check tension of the tail rotor drive belts at every pre-flight and post-flight inspection. Detailed
procedures regarding proper installation, tension and maintenance of these belts are given in the Flight Manual and
in Section 25 of the Construction Manual (Rigging Procedures). Thoroughly inspect the condition of the belts every
100 hours.
Replace the tail rotor drive belts at 250 hours of operation, or at 2 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.
INSPECTION CHART
PART NO.
E18-6130 Idler Pulley Mounting Scissors 250 HR 2000 HR 4-1
E18-1131 Idler Pulley Bearing Assembly 250 HR 250 HR/OC 4-2
E18-2012 Tail Rotor Idler Pulley 100 HR 2000 HR/OC 4-3
E18-1150 Tail Rotor Belt Pre/post flight 250 HR/OC or 2 yrs 4-4
E18-1160 Tail Rotor Belt Pre/post flight 250 HR/OC or 2 yrs 4-4
DESCRIPTION
SERVICE
REFERENCE
INSPECTION
INTERVAL
R.C.O.