CR-MM-1-0-00
PS-28 Cruiser
PS-28N Cruiser
CHAPTER 9 – FUEL SYSTEM
Date of issue: 2011-03-08
Revision No.: -
9 - 7
9.2 Description and operation
9.2.1 Fuel storage
Fuel is stored in airplane in the fuel tanks. The fuel tanks are welded from Al-alloy sheet and
their volume is 57 liters (
15 US gallons
) each. The tanks are located in the outer wings between
ribs No.4 and 6a in front of the main spar. Their shape fits with 3.2 mm (
1/8 in
) offset with outer
wing shape. The gap is filled with cork strips glued on the fuel tank. Cork strips protect the tank
from touching the skin and the wing spar. Each fuel tank has a filler neck (1, Fig. 9-2) with flush
head filler cap (2), venting tube (3), finger screen (4) and drain valve (5). Fuel is filled into the
each tank through the filler neck (1), which is located on the top skin close to rib No.6a. Fuel
drain from the tank is possible through the drain valve (5) located in the rear corner of bottom
skin close to the root fuel tank rib.
1 Filler neck
4 Finger screen
2 Filler cap
5 Drain valve
3 Venting tube
6 Fuel quantity sensor
Fig. 9-2
: Fuel tank, right
9.2.2 Fuel distribution
Fuel flows from the tank (1, Fig. 9-3.) and (2) through finger screens (3) to the fuel selector valve
(4) and from there to the gascolator (5), electrical fuel pump (6) to the mechanical fuel pump (7)
located on the engine. From there it is supplied through the fuel distributor to carburetors.
The fuel selector valve (4) is used also for interruption of fuel supply in case of engine fire or
after long-time parking airplane. The fuel selector valve is located on the middle console
between the seats in the cockpit. The gascolator (5) is located on the firewall in lowest point of
