System And Component Servicing; Hydraulic System; Engine Oil System - Thrush Aircraft S2RHG-T65 TURBO THRUSH Maintenance Manual

THRUSH AIRCRAFT, INC – MODEL S2RHG-T65 TURBO THRUSH

SYSTEM AND COMPONENT SERVICING

Servicing procedures contained in this Section are confined to those maintenance actions
that occur with routine frequency and require a reasonably short period of time to
accomplish. Servicing practices and maintenance to aircraft systems and components
that require less frequent attention are contained in the appropriate Section of this
manual.
The hydraulic system consists of two master brake cylinders and the necessary hydraulic
lines connecting the master cylinders to the wheel brake cylinders. Applying toe pressure
on the rudder pedals actuates the master cylinders, which are located just aft of the pilot's
rudder pedals. Refer to Section Six for brake servicing procedures.
The oils that are specified for the lubrication system are detailed in the Pratt and Whitney
Canada Service Bulletin 13001. All oils listed in the bulletin are approved for flight
operation. It is recommended for all turbo aircraft that the oil should be changed every
400 hours. The oil system contains 13 U.S. quarts.
In cases where oils that are approved are not available, an operator must obtain prior
approval or recommendations for use of substitution oil from the Service Department,
Pratt and Whitney Canada Corp, 1000 Marie-Victorin, Longueuil, Quebec, Canada J4K
1A1. Phone: 1-800-268-8000 (U.S. & Canada) or 450-647-8000 (International).
A. OIL LEVEL CHECK
1. To avoid overfilling of oil tank, and high oil consumption, an oil level check
is recommended within 30 minutes after shutdown. Ideal interval is 15 to 20
minutes. If more than 30 minutes has passed, and the dipstick indicates
that oil is needed, start the engine and run at ground idle (low idle) for five
minutes, and recheck oil level.
Do not mix different brands, viscosity's, or types
of oil since their chemical structures may make
them incompatible. If different types of oil
become mixed, drain and flush the system.
Refill with new oil.
2. Unlock the filler cap and dipstick from the filler neck at the eleven o'clock
position on the accessory gearbox and remove the filler cap.
3. Check the oil tank contents against the markings on the dipstick. Service
as required.
The graduations on the dipstick indicate the oil level in U.S.
quarts below maximum capacity of the oil tank. The normal
2-8
AIRCRAFT MAINTENANCE MANUAL

HYDRAULIC SYSTEM

ENGINE OIL SYSTEM

Ref. Figure 2-8
** CAUTION **
* NOTE *
Effective 9/16/05