RANS S-20 RAVEN
TEXT MANUAL
09/01/2013
03D-01
ROTAX 912ULS - LUBRICATION SYSTEM INSTALLATION
(FINAL INSTALL OF ENGINE)
ASSEMBLY
•
Oil Tank should be installed to center of firewall.
•
Oil Breather Tube is installed on Firewall
•
The engine needs to be installed to the airframe.
1.
Refer to the parts catalog and select the required components for
assembly.
2.
The Rotax 912ULS installation features an oil cooler mounted under the
engine mount.
CAUTION:
When working with the oil cooler take care not to induce
stress or over tighten fittings or bolts. Damage to the cooler may
result. When tightening the lines of the oil cooler it is necessary to
use a wrench to support the fitting.
3.
With a band saw or hacksaw, remove the mount tabs from the oil cooler
leaving a 1/16" lip past the Oil Cooler body.
4.
Inspect Oil Cooler threaded boss for nicks or burrs in O-ring contact area
that might cause O-ring failure. Inspect the Cooler port threads for any
buildup of coating. If needed, gently clean threads. Apply light petroleum
oil to port threads.
5.
Lubricate O-ring of fittings by coating with light petroleum oil and install the
O-ring onto the fitting. Install adaptor and fitting into the threaded boss on
Oil Cooler. Using two wrenches tighten fitting until hexagon face contacts
the face of the hexagon boss on Oil Cooler.
IMPORTANT:
Always use two wrenches to tighten fitting onto
cooler. Using only one wrench and cooler as leverage will cause
cooler to fail. Do
NOT
Over Tighten. Tighten to just snug. The O-
ring is the sealing component. This is not a pipe thread.
6.
Cut the provided Silicone Sheets to length to fit in the Oil Cooler Mounts.
Trim just short of the outer bolt holes to allow clearance with the threaded
bushings. Refer to
FIGURE 03D-06
. Install to the upper and lower oil
cooler mounts as shown in the PARTS MANUAL DRAWING. The sheets
provide vibration isolation and should extend past the forward and aft
edges of the oil cooler.
