Specifications

RotorWay International

Exec 162F Maintenance Manual

Section 12: Fan Drive

The fan drive system is a series of pulleys and belts providing the proper speed reduction for the fan design.

Reference print: E31-2000

SERVICE NOTES:

1. A. Remove the fan assembly from the helicopter.

B. Loosen set screws from the locking collar, tap with hammer and punch in the opposite direction from the original

set position.

C. With a torch or heat gun, lightly heat the bearing so the Loctite will release the bearing from the shaft.

D. Clean the shaft and install new bearings (part no. E31-1120) on the shaft in the correct position. Loctite the new

bearings to the shaft, allowing time for the Loctite to cure before tightening the lock rings and set screws.

E. Reassemble the fan assembly on the helicopter following the procedures in the Construction Manual and print

E31-2000.

2. New belts should be cleaned with acetone and properly tensioned following the procedures outlined in the Construction

Manual.

Replace the fan 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.

INSPECTION CHART

PART NO.

E31-1120 Bearings 100 HR 500 HR/OC 12-1

E31-1130 Belt (Upper) 100 HR 500 HR/OC or 5 yrs 12-2

E31-1141 Belt (Lower) 100 HR 500 HR/OC or 5 yrs 12-2

E31-5100 Pulley (Upper) 100 HR 2000 HR/OC

E31-5120 Pulley (Lower) 100 HR 2000 HR/OC

E31-6100 Shaft 500 HR 2000 HR/OC

DESCRIPTION

SERVICE

REFERENCE

INSPECTION

INTERVAL

R.C.O.

Rev. 1 7/98