Requirements On The Oil- And Venting Lines - Rotax 912 ULS 3 Installation Manual

13.4) Requirements on the oil- and venting lines

Oil lines
Oil circuit, engine
- Temperature durability:
- Pressure durability:
- Bending radius:
* unless otherwise stated by the hose manufacturer
- Minimum inside dia. of oil lines in reference to total length
- Length of a single oil line:
Vent line of oil tank
- Route the line without kinks and avoid sharp bends.
◆ NOTE:
- 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.
Effectivity: 912 Series
Edition 1 / Rev. 0
BRP-Rotax
INSTALLATION MANUAL
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')
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.
mind. 140 °C (285 °F)
mind. 10 bar (145 psi.)
mind. 70 mm (2.75 in) *
min. 13 mm ø (.51")
max. 3 m (118.11 in.)
1
2
Fig. 43
09132
page 71
May 01/2007