RANS S-20 RAVEN
TEXT MANUAL
09/01/2013
01H-01
HYDRAULIC BRAKE INSTALLATION
(AFTER COVERING AND PAINTING OF FUSELAGE AND INSTALLATION OF
FIREWALL)
1.
Rudder pedals and floorboards must be installed and the airplane should
be on the main gear with wheel assemblies mounted.
2.
Modify Parking Brake Backing Plate per
FIGURE 01H-02
. Drill arm of
Parking Brake to 1/4".
3.
Obtain Firewall and locate holes for Parking Brake, Backing Plate, Brake
Reservoir and Bulkhead Tee per
FIGURE 01H-03
. Rivet Parking Brake
Backing Plate to Firewall. Do
NOT
install other items until Firewall
Soundproofing is attached.
4.
Drill hole in top of U-brackets to 5/16" for brake cylinder rod.
5.
Bolt U-bracket to cylinder attach bracket on Upper Toe Pedal Assembly.
Be sure to include the proper washers. U-bracket should be able to swivel
when bolted in place. Secure with cotter pin.
6.
Install fittings in the brake cylinders as per parts manual using thread
sealant. Refer to
FIGURE 01H-06
.
7.
Bolt brake cylinder to the fuselage tangs and to the rudder pedals via the
U-bracket as shown in the parts manual. Adjust the U-bracket up and
down as desired. Do
NOT
forget the cotter pins.
8.
Check that the pedals and the brake pedals move freely.
9.
Route brake lines and install to cylinders, park brake valve and “T” fitting
as per
FIGURE 01H-06
.
10.
Install 90-degree Bulkhead Elbow through Brake Line Exit Ring in
fuselage belly. Route brake lines from Park Brake Valve to 90-degree
Bulkhead Elbow.
11.
Connect lines to the fittings on the wheel assembly. Press into groove on
aft side of landing gear and connect to Bulkhead Elbow.
NOTE: Brake
Line pressed into groove of Gear Leg should NOT have a protective
plastic coating installed. If this coating is installed, carefully slit with a razor
knife and remove. Do NOT cut into the underlying stainless braid.
IMPORTANT
Use only aircraft-grade brake fluid.
MIL-H-5606 Red Hydraulic Fluid
Automotive brake fluid will destroy the seals in the system.
