Thrush Aircraft S2R–T660 Maintenance Manual page 29

major oil companies that have been approved by Pratt and Whitney Canada. Service Bulletin
13001 will be revised periodically to include newly approved oils. Refer to Figure 2-8 for the
locations called out in the following procedure.
1. Place suitable containers or drip pan under the engine.
2. Remove lockwire from the main oil tank's drain plug #6 from boss on compressor
inlet case. Remove drain plug. Discard the preformed packing. Or drain oil at drain
port on left shin skin (on aircraft equipped with quick drain).
3. Remove the rear case drain plug #2 from the six o'clock position on the rear face of
the accessory gearbox housing. Discard the preformed packing.
4. Remove the chip detector #3 from the six o'clock position on the reduction gearbox
front case. Discard the preformed packing.
5. Examine the drained oil for the presence of foreign matter.
E. Refill the oil tank by accomplishing the following procedures.
1. Install the chip detector #3 with new preformed packing on the reduction gearbox.
Torque chip detector body #3 45 to 55 lb. in. and lockwire.
2. Install rear case drain plug #2 with new preformed packing in the accessory
gearbox housing. Tighten and torque to 215 to 240 lb. in. and lockwire.
3. Install the drain plug #6 with the new preformed packing in the bottom of the air
inlet case. Or simply install a cap on the drain port on the left shin skin (on aircraft
equipped with quick drain) and lockwire.
4. Fill the oil tank with the specified oil to the level of maximum graduation on the
dipstick.
F. Install the filler cap and dipstick assembly in the oil tank. Ensure that the cap is locked securely.
1. Start the engine and run at idle for approximately 2 minutes to circulate the oil
through the system.
2. Feather the propeller.
3. Shut down the engine.
4. Check the oil level in the tank. Replenish, as required, to the normal level on the
dipstick.
5. Install the filler cap and dipstick assembly in the oil tank. Ensure that the cap is
locked securely.
Effective: 12/17/03
THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
2- 11