Effectivity: 912 Series
Edition 1 / Rev. 0
d04055
page 71
May 01/2007
BRP-Rotax
INSTALLATION MANUAL
13.4) Requirements on the oil- and venting lines
Oil lines
Oil circuit, engine
- Temperature durability: mind. 140 °C (285 °F)
- Pressure durability: mind. 10 bar (145 psi.)
- 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.)
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. 43.
Fig. 43
09132
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2
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