PS-28 Cruiser
PS-28N Cruiser
CR-MM-1-0-00
CHAPTER 8 – LANDING GEAR
Revision No.: 7
Date of issue: 2013-10-09
8 - 26
8.5.5 Refilling / exchanging brake fluid
Draining brake fluid from brake system
Type of maintenance: line
Authorization to perform:
-
Sport pilot or higher
Tools needed:
-
wrench size 7/16”
(a) Disconnect the brake hose from the brake cylinder and let brake fluid drain into the
previously prepared can.
(b) You can accelerate brake fluid draining by compressing the relevant brake pedal.
Filing brake fluid into brake system
NOTE:
Brake fluid used by aircraft manufacturer is shown in Section 17.5.
(a) Fix the aircraft with help wedges.
(b) Release the parking brake.
(c) Bleed the hose of the filling equipment and connect it to the filling hole of the left wheel
brake.
(d) Unscrew the plug of the left brake cylinder with reservoir using the socket wrench.
(e) Slowly fill the brake system with hydraulic fluid.
(f) Repeatedly push the brake pedal.
(g) Check the brake hose from the point of view of occurrence of bubbles.
(h) Continuous occurrence of bubbles indicates a failure of the filling equipment.
(i) After the reservoir is filled up to the filler hole – stop the filling through closing of the filling
valve of the filling equipment.
(j) Disconnect the hose of the filling equipment.
(k) Suck off 20 ml of hydraulic fluid using the syrette.
(l) Screw down the closing plug using the socket wrench.
(m) Repeat the same procedure for the right brake cylinder.
(n) Check the proper resistance of pedals.
(o) Pull the parking brake.
By this way, both wheels must be braked equally.
(p) Remove the wedges.
Refilling brake fluid into brake system
For the refilling – use the procedure for filling (see above).
