HYDRAULIC CONNECTION
Connect the hydraulic brake line from the brake system on the towed vehicle to the brake
port on the AL-KO iQ7 actuator unit using a 3/8” UNF Brass Long Series Tube Nut.
Carefully fill the brake fluid reservoir by removing the filler cap. Always use new brake fluid.
Never attempt to reuse brake fluid. The reservoir is full when the fluid reaches the bottom of
the reservoir neck (the top of the sight glass).
Do not over fill the reservoir. Be careful not
to spill brake fluid between the reservoir and the front cover.
The brake fluid level must
never fall below the ‘minimum’ line indicated on the sight glass.
Bleeding
Bleeding instructions using AL-KO iQ7 Pressure Bleed Gun
1. Fill reservoir with clean Dot 4 brake fluid to just
below the top of the sight glass.
2. Place the pressure bleed gun (available from AL-KO
p/n 350045) socket gently over the neck of the
reservoir applying gentle pressure to locate the bleed
socket O Ring in
3. Do not push on with excessive force or damage
may be caused to the reservoir or the O ring on the
pressure bleed gun socket. Rub a small amount of
brake fluid around the inside of the reservoir neck to
assist fitting. Screw the cap fully closed.4. Attach
the bleed gun to the actuator fluid reservoir (as
shown in diagram 1.) and place the other end in a
bottle of new brake fluid
4. Attach the bleed gun to the actuator fluid reservoir
(as shown in diagram 1.) and place the other end in
a bottle of new brake fluid.
5. Open the bleed screw on the trailer brakes (start with the furthest calliper/brake) at
least one full turn. Place a clear flexible hose over the bleed screw and immerse the
other end into a container partially filled with brake fluid.
6. Squeeze the pressure bleed gun repeatedly (not too fast or cavitation may occur)
ensuring that the bulk brake fluid tank and the reservoir do not run out of brake fluid
or air will enter the hydraulic system. At no stage let the fluid level in the reservoir fall
below the minimum fluid level indicator.
3
Actuator
Actuator
Bow Post
Mounting bush
Rubber grommet
Over tightened
Correct
Brake Fluid
Reservoir
Master
Cylinder
Port
Pressure
Dump Valve
100mm
140mm
168mm
281mm
Diameter: 6.0mm of 1/4”
Maximum Fluid Level
Minimum Fluid Level
Diagram 1.
Attaching the
bleed gun to
the actuator.
Bleeding
(Diagram 2)
alko.com.au
