Brake Fluid Refilling , Brake System Bleeding , Brake Pad Clearance Adjustament; Brake Fluid Refilling; Brake System Bleeding; Brake Pad Clearance Adjustment - Urban Air UFM – 13 LAMBADA Operating And Maintenance Manual

OPERATING AND MAINTENANCE MANUAL FOR ULTRALIGHT AEROPLANE
4.6. Brake fluid refilling, brake system bleeding, brake pad clearance adjustment

4.6.1. Brake fluid refilling

Add the SYNTOL HD 205 (Nom. 097 403) brake fluid (or equivalent) into the brake system
master cylinder located at the pilots control stick. Remove the cap from the master cylinder
to do it.

4.6.2. Brake system bleeding

1. Fill a syringe with brake fluid
2. Put the transparent brake hose (~ 300 mm length ) on the syringe outlet
3. Put the suitable pot below the Brake system master cylinder located at the control stick
4. Unscrew the Master cylinder cap
5. Loose the bleeding screw on the left wheel brake calliper
6. Put the transparent hose on the loosen left bleeding screw
7. Push/pull repeatedly the syringe lever to add brake fluid into the hydraulic cylinder and
bleed it. Repeat until no air bubbles are drawn
8. Tighten the left bleeding screw
9. Proceed on the right wheel. Loosen the bleeding screw, put the hose on, repeatedly
push/pull the syringe lever until no air bubbles flow into the brake system master cylinder
located in the cockpit. Overflow brake fluid runs into the pot placed below the master
cylinder or may be drawn by the syringe.
10. Add the brake fluid so that the level is 2 mm below the Master cylinder upper edge
11. Screw the Master cylinder cap
12. Check the system for function and leak

4.6.3. Brake pad clearance adjustment

You should take up the clearance of worn-out brake pads because the movement of the
hydraulic cylinder is then short and brake system efficiency is going to be unsatisfactory.
Measure the clearance using the feeler gauge. Insert the a thin sheet of required thickness
between the hydraulic cylinder and brake pad to take out the clearance. Two holes for M5
screw must be drilled through that thin sheet.

4.6.4. Brake pad replacement

Unscrew the brake pads and replace by the new ones.
Do not empty the brake fluid.
Document No:
Date of issue: 30.01.2008
UFM-13 Lambada
4-6