RANS S-20 RAVEN
TEXT MANUAL
09/01/2013
03-01
ROTAX 912ULS - ENGINE MOUNT INSTALLATION
(AFTER FIT-UP OF FIREWALL & BOOT COWL)
ASSEMBLY
1.
Refer to the parts catalog and select the required components for
assembly.
2.
Position Firewall on forward side of Station 1.
3.
Lightly oil the (2) 1/4" bolts used to hold the top of the mount to the
firewall. Insert these with a thin washer under the head into the mount
lugs. Line up the mount in its proper position and insert the (2) bolts into
the top receivers on the fuselage.
NOTE: The mount may need some
"encouraging" to fit.
4.
The bottom attach points of the mount should be on the plate welded into
Station 1. Clamp the mount firm against the firewall. Drill through 1/4"
using the mount bushings as drill guides. Debur the holes.
5.
Before final installing Engine Mount be sure to place two 1/4" Thick
Washers between left side of Engine Mount and Firewall. These washers
will help set the engine offset.
6.
Remove the mount from the firewall. Completion of mount and engine
system will occur in final assembly.
(AFTER INSTALLING ALL ACCESSORIES ON FIREWALL)
FINAL INSTALLATION
7.
Bolt Engine Mount to Fuselage with Firewall in place. Be sure to place two
1/4" Thick Washers between left side of Engine Mount and Firewall to set
engine offset. Install nuts and washers and tighten to 5 to 7 ft. lbs.
8.
Place the Rubber Washers into the Engine Mount cups and install the 912
Engine Attachments, Bushings, Washers, and bolts. Do
NOT
tighten bolts
at this time.
IMPORTANT: Place the forward bolts with the heads down
for best cowling clearance.
9.
Rotate the water pump inlet on engine to the lower right position.
Re-tighten screws to 90 in. lbs.
10.
Suspend the engine from an engine hoist or winch.
