Effectivity: 914 Series
Edition 2 / Rev. 0
d04278
page 67
July 01/2008
BRP-Rotax
INSTALLATION MANUAL
Fig. 36
13.4) Requirements on the oil- and venting lines
Oil lines
Oil circuit, engine (main oil pump)
- Temperature durability: mind. 130 °C (266 °F)
- Pressure durability: mind. 10 bar (145 p.s.i.)
- Bending radius: mind. 70 mm (2.75 in) *
* unless otherwise stated by the hose manufacturer
- Minimum inside dia. of oil lines in reference to total length
length up to... 1m (3 '3") min. 11 mm ø (.43")
length up to ... 2 m (6' 6") min. 12 mm ø (.47")
length up to... 3 m (10') min. 13 mm ø (.51")
- Length of a single oil line: max. 3 m (118,11 in.)
Oil circuit, turbo charger (suction pump)
- Temperature durability: mind. 130 °C (266 °F)
- Pressure durability: mind. 10 bar (145 p.s.i.)
- Bending radius: mind. 70 mm (2.75 in)*
* unless otherwise stated by the hose manufacturer
- Minimum inside dia. of oil lines in reference to total length
length up to... 1m (3 '3") min. 6 mm ø (.23")
length up to... 2 m (6' 6") min. 7 mm ø (.27")
Vent line of oil tank
- Route the line without kinks and avoid sharp bends.
◆ NOTE: Water is a by-product of combustion. Most of this water will dissipate
from the combustion chamber with the exhaust gases.
A small amount will reach the crankcase and has to be disposed
through the vent line of oil tank via oil return line.
- The venting line must be routed in a continuous decline or furnished with a drain
bore at it's lowest point to drain possible condensate.
- The vent line has to be protected from any kind of ice formation in the condensate.
Protection by insulation, or routing in a hose with hot air flow or by furnishing vent
line with a bypass opening (1) before passing through cowling (2). See Fig. 36.
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