Install dipstick in transmission and check for security.
Close filler port cap and lockwire.
7-23. DRAINING - TAIL ROTOR TRANSMISSION
Disconnect wire lead, cut lockwire and remove chip detector and
self-closing valve. Allow sufficient time for oil to drain.
If damaged, replace chip detector and self-closing valve O-rings.
Install self-closing valve (50-60 in.-lb torque) and chip detector
(40-50 in.-lb torque). Lockwire valve to gearbox and detector to
valve.
7-24. FILLING - TAIL ROTOR TRANSMISSION
Transmission (gearbox) oil should be replenished when low.
Visually check oil level in sight indicator. Oil level should be above
ADD mark.
Cut lockwire and remove filler plug in top of sight gauge extension.
With aircraft at a level attitude, add oil through access hole at top of
sight gauge extension until oil level reaches the shoulder in the ac-
cess hole of the sight gauge extension.
Reinstall, tighten and lockwire plug in sight gauge extension.
7-25. REPLACING ENGINE FUEL FILTER AND AIRFRAME FUEL
FILTER
Refer to HMI.
Refer to Rolls Royce Operation and Maintenance Manual,
Publication No. 10W2.
To be performed by qualified maintenance personnel.
Handling, Servicing & Maint.
Pilot's Flight Manual
Schweizer RSG, LLC.
Model
269D
Helicopter
7-32
Reissued:
16
Jan 2019
Book 3.indd 194
8/4/19 1:25 PM