Installation; Cylinder And Piston - Installation; Installation Of The Hydraulic Valve Tappet - Rotax 915 i A series Maintenance Manual

INSTALLATION

CYLINDER AND PISTON —
INSTALLATION
Preparation
• Clean all parts carefully.
• Lightly grease or lubricate press-in parts and
gaskets.
INSTALLATION OF THE HYDRAULIC
VALVE TAPPET
ATTENTION
If a hydraulic valve tappet has to be replaced, it
must be ensured that a hydraulic valve tappet
with a polished cam running surface is used.
ATTENTION
If operating faults occur, such as operation
with a non-purged hydraulic valve tappet, the
components (plate) in the hydraulic valve tap-
pet will be damaged.
NOTE
New hydraulic valve tappets are partially emp-
tied depending on the bearing and are pumped
full of oil during the starting process. The oil
passes through the bore into the hydraulic valve
tappet. The retaining ring holds the piston in po-
sition when the hydraulic valve tappet is
removed.
See Fig. 11 and Fig. 13.
Step Procedure
1 Lubricate the bearing bore for the hy-
draulic valve tappet in the crankcase and
contact faces with Engine oil.
2 Install the circumstantially lubricated hy-
draulic valve tappet in the corresponding
place in the crankcase.
Effectivity: 915 i A Series
Edition 0/Rev. 0
BRP-Rotax
MAINTENANCE MANUAL HEAVY
NOTE
The hydraulic valve tappet must rotate in the
crankcase without resistance.
Figure 9.16
1 Bore
Figure 9.17
Hydraulic valve
1
tappet
2 Retaining ring
2
Contact faces
72–30–10
Page 17
August 01 2018