RANS S-20 RAVEN
TEXT MANUAL
09/01/2013
03F-01
ROTAX 912ULS - OPTIONAL MUFFLER HEATER INSTALLATION
•
The RANS Muffler Style Heater works well for most cases. If
additional heat is required from the Heater, wrap a long spring
around the Muffler before installing the Heater Wraps. Stretching
the spring to provide air gaps between coils will also aid in
efficiency. RANS uses spring #9664K48 from McMaster-Carr.
1.
Rivet a Heater Flange to each Heater Wrap.
NOTE: Apply high-temp
silicone to the Flange before riveting as a sealant.
2.
Install Heater Wraps to the Muffler using the hardware shown in the parts
manual.
NOTE: The Heater Wrap should fit tight around the Muffler. Shim
as required using the supplied Heater Wrap Shims.
Heater Wraps will
need to be formed around the Muffler for a tight fit.
3.
Install the Muffler Assembly to the engine as shown in the parts manual.
The Heater Wrap may be safety wired to an Exhaust Spring mount loop to
avoid rotation of the Heater Wrap in service.
4.
Bolt Angle Bracket to right side of engine gearbox.
5.
Secure Heater Duct Hose to inlet Heater Flange on Heater Wrap with a
Hose Clamp. Route Hose to Angle Bracket bolted to gear box and cut to
length.
6.
Slip Inlet Tube about half way inside Duct Hose and secure around Duct
Hose to Angle Bracket with Cushion Clamp.
7.
Locate hole in Firewall for Air Diverter Assembly. Refer back to
FIGURE
03A-02
.
8.
Install Reverse Cable Stop in end cap of Slide of Air Diverter. Orientate to
allow installation and access to the small Set Screws.
9.
Install Adjustable Cable Ferrule to bent end of Air Diverter. Allow room to
adjust the Cable Ferrule in and out.
10.
Cleco Air Diverter to Firewall. Opening should be orientated downward.
11.
Locate and secure Control Cable in Instrument Panel. Keep this in mind
when planning your instrument panel layout. Slip Control Friction Block
over Control Cable and slide to end of housing. The Socket Head Cap
Screw can be tightened to provide friction on the control wire to prevent
movement from vibration.
12.
Route Cable to Adjustable Cable Ferrule in Air Diverter and trim housing
to length.
CAUTION: Pull control knob out at least 5" before cutting to
prevent cutting control wire too short.
