NOTE: On transmission input pinion gear oil seals with less than
two hours of operation, some seepage or wetting of adjacent
surfaces is normal until seal is wetted and worn in (seated). If
seepage continues at a rate of one drop per minute or less, seal may
continue in service. Check transmission oil level and observe
seepage rate after every two hours of operation. Shorter inspection
periods may be required if seal leakage appears to be increasing.
7-36. ENGINE OIL LEAKS
Refer to Rolls Royce Operation and Maintenance Manual,
Publication No. 10W2 for definition of permissible engine oil
leakage.
7-37. LANDING GEAR DAMPER - HYDRAULIC FLUID LEAK
NOTE: It is normal for a thin hydraulic oil film to remain on
damper piston as a result of wiping contact with piston seal. Newly
installed dampers may also have slight oil seepage from oil trapped
in end cap threads during assembly. Neither of these should be
considered damper leakage or cause for damper replacement.
Hydraulic fluid leakage from any landing gear damper is not
permissible. If leakage is present, damper assembly should be
removed and serviceable unit installed. If leaking landing gear
damper is not replaced when leakage is noticed, continuation of
damper in service can cause internal damage that may otherwise not
occur. Also, improper operation of damper(s) may cause conditions
conducive to ground resonance.
7-38. OVERRUNNING CLUTCH - OIL LEAKAGE
If oil leakage is noticed at overrunning clutch (sprag clutch),
corrective maintenance (HMI) should be performed before further
flight. Continuation in service with oil leakage may result in failure
of overrunning clutch and/or oil on drive belts.
Handling, Servicing & Maint.
Schweizer RSG, LLC.
Model
269D
Helicopter
Pilot's Flight Manual
7-39
Reissued:
16
Jan 2019
Book 3.indd 201
8/4/19 1:25 PM
