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Rotax 914 F User Manual

Rotax 914 F
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Reference
Modification no.
- 0 -
Page
46
Date
1997 02 01
Main
914 F
01476
9.3.2) Suction pump (Turbo charger lubrication circuit)
See Pic. 20.
The suction pump { is of the same design as the main oil pump } and sits
on the extended common pump shaft e.
The lubrication of the turbo charger shaft, supported on plain bearing is via a
separate oil line W from the main oil pump.
The pressure valve E at entry into turbo charger housing will prevent flooding
of turbo charger Q with engine oil by gravity due to ineffective suction pump
after engine stop.
Operation of the pressure valve:
Oil pressure (min. 1 bar (14,5 p.s.i.) will keep open the ball valve against the
low spring pressure and the oil will flow nearly unhindered to spot of
lubrication. Without oil pressure the valve closes and stops the oil flow.
â–  ATTENTION:Oil loss combined with heavy smoke at engine start strongly
indicates a defective pressure valve.
Emerging oil from the bearing spot accumulates in the oil sump Iand will be
pumped back to the oil tank by the suction pump { via hose nipple P and
separate line O.
â—† NOTE: The suction pump is also a trochoid pump and will be driven
as well as the main oil pump } by the common pump shaft
engaging in the cam shaft.

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Rotax 914 F Specifications

General IconGeneral
BrandRotax
Model914 F
CategoryEngine
LanguageEnglish

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