EV-97 Eurostar SL Microlight Maintenance Manual GEN/EUR/04 Issue 4
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When it is necessary to drain the coolant, disconnect the hose running from the radiator to the
pump, which is the lowest point of the system.
5.6
Brake System
5.6.1 Fluid Type
Only brake fluid meeting DOT4 and J 1703c standards (for medium or severe conditions) should
be used for the hydraulic brake system.
5.6.2 Brake fluid refilling
Brake fluid refilling is necessary when a loss of brake efficiency occurs, or due to wear on the
pads, or a fluid leak.
The brake fluid reservoir is mounted at the top centre of the firewall. Top up to a minimum of 1”
from the bottom of the reservoir.
5.6.3 Brake fluid emptying
Brake fluid absorbs water during aircraft operation and thickens. This condition causes brake
efficiency loss and system failures. It is not possible to determine when this may occur. The best
way to prevent trouble is to change the brake fluid every year. Bleed the system after re-filling.
Bleed nipples are provided on the brake calipers, see below.
5.6.4 Brake Pad Replacement
Brake pad replacement is only necessary when a pad is worn-out.
CAUTION
Due to the possibility of brake fluid leaking, it is advisable not to loosen the
hose fitting during brake pad removal. In the case of fluid loss in the brake
system, filling and bleeding is necessary.
Brake pad replacement procedure
1. Jack up the airplane; see Section 11.
2. Remove the split pin, unscrew the castellated M16 nut and remove the washer
from the axle.
3. Bend back the small tabs on the 3 washers and unscrew the M6 screws
connecting the brake disc to the wheel rim.
4. Remove the wheel and the distance ring from the axle.
5. Take the brake disc off (leave the brake on a main leg properly supported).
6. Remove the split pins, knock out the pins and remove the brake pads.
7. Mount a new brake pad, secure the pins with split pins (diam.
2mm, length14mm)
(P/N: 039300)
8. Put the brake disc on the wheel
9. Put the distance ring and the wheel on the axle (adjust the distance ring between
bearings)
10. Set tab washers (6x2, P/N: 038160) on the screws, apply Loctite and attach the
brake disc to the inner part of the rim. Bend the washer tabs to secure the screw
heads.
11. Put the washer on the axle, tighten the castellated nut and secure with a split pin
