Firewall Oil Shutoff Valve - Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual

SECTION 7 CESSNA
AIRPLANE AND SYSTEMS DESCRIPTION MODEL 208B 867 SHP
GARMIN G1000
ENGINE LUBRICATION SYSTEM
(Continued)
Breather air from the engine bearing compartments and from the
accessory and reduction gearboxes is vented overboard through a
centrifugal breather installed in the accessory gearbox. The bearing
compartments are connected to the accessory gearbox by cored
passages and existing scavenge oil return lines. A bypass valve,
immediately upstream of the front element of the internal scavenge
pump, vents the accessory gearbox when the engine is operating at
high power.
An oil dipstick/filler cap is located at the rear of the engine on the left
side and is accessible when the left side of the upper cowling is raised.
Markings which indicate U.S. quarts low if the oil is hot are provided on
the dipstick to facilitate oil servicing. The oil tank capacity is 9.5 U.S.
quarts and total system capacity is 14 U.S. quarts. For engine oil type
and brand, refer to Section 8.

FIREWALL OIL SHUTOFF VALVE

A firewall oil shutoff valve, located on the forward side of the firewall,
enables the pilot to shut off all oil flow from the engine to the oil cooler
in the event of an engine fire. With the oil cooler shutoff valve closed, oil
bypasses the oil cooler through an external oil line and relief valve and
dumps back into the engine. An additional check valve is placed in the
oil cooler return line to prevent bypassed oil from flowing back to the oil
cooler. The shutoff valve is controlled by a red push-pull knob labeled
FUEL/OIL SHUTOFF located on the right side of the control pedestal.
The push-pull knob has a press-to-release button in the center which
locks the knob in position when the button is released.
7-60 208BPHCUS-00
U.S.