79-00-00
page 20
May 01/2007
Effectivity 914 Series
Edition 1 / Rev. 0
d02628
BRP-Rotax
Maintenance Manual
3.2) Pressure check valve (only on 914 Series)
See Fig. 79-14.
Remove banjo bolt (1) M8 with sealing rings (2) 8x13.
â—† NOTE: The valve housing (3) is only removed in the event of damage
or for cleaning.
Remove ball (4) 5.5 and pressure spring (5), 22 mm long, from the valve
housing.
â—† NOTE: The banjo bolt together with the ball and spring serve as a
pressure check valve. For further information, see 79-00-00
sec. 2.3.
Clean all components and inspect them visually.
Also check thread and flange surface of turbocharger housing.
If there is leakage at the valve seat (6), it can be reworked with valve lapping
paste or other suitable method. If necessary, replace banjo bolt.
Reassembly in reverse order.
Screw valve housing (3) with sealing ring (7) 12x18 into turbocharger housing
and tighten to 25 Nm (18.5 ft.lb).
â– CAUTION: If the ball (4) installed under the pressure spring (5), the oil circuit
is interrupted and the turbocharger will be destroyed.
Insert pressure spring (5) and ball (4).
The pressure oil line (8) is attached with the banjo bolt (1) and sealing rings (2)
on both sides. Tightening torque 10 Nm (90 in.lb).
Fig. 79-14
00075
6
7
8
1
2
3
4
5
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