* NOTE: <#> is the reference number shown in the assembly diagram of the actuator located at the end of this manual
Page 7 of 13
HITCHING TRAILER (cont.)
10.
Resetting the Breakaway Lever:
Carefully loosen the brake line fitting going into the master cylinder. After the
pressure is gradually released, retighten the fitting. Then remove the two bolts at the front of the master cylinder,
which hold down the break-away catch spring <38>. With the two bolts removed, the break-away spring can be
set aside. If the lever is ratcheted forward, use locking pliers to grip the lever and rotate it forward. The break-
away catch pin <39> can now be lifted from the outer case. Let the lever fully return to its rest position as shown
in Figure 4. Place the break-away catch pin in the space between the lever's upper notch and the actuator case.
Replace the break-away catch spring in its original position and retighten the two master cylinder bolts using a
torque wrench to 108-132 inch-pounds of torque.
11.
Sway control devices that restrict operation of the actuator CAN NOT be used. The actuator must be free to
telescope in response to braking requirements.
BRAKE LOCKOUT MECHANISM
1
.
When your Aero 7500 is used with disc brakes or non free backing brakes, there are two alternatives to allow
normal backing of your trailer. Our solenoid back up valve < 4748800 > is a convenient choice. It is electrically
activated when the tow vehicle is shifted into reverse and prevents brake fluid from flowing to the trailer. There is
also a lock out lever which can be manually
engaged to prevent brake activation. See Figure 5.
2.
To use your lockout, check that no force is
being applied to the actuator. To achieve this,
position the towing vehicle and trailer on a flat
surface, or with the trailer downhill from the
tow vehicle. Set the vehicle's parking brake.
Make sure the actuator's coupler case
assembly <3> is pulled fully forward out of the
outer case <2>.
3.
Rotate the lockout assembly <40> (as shown in Figure 5) forward and up. Then push it back so that the hook on
the lock out lever engages the top of the outer case. The actuator is now locked out and will not apply noticeable
pressure to the trailer brakes as you back up. If you cannot rotate the assembly forward enough to reach the
notch, make sure the actuator's coupler case assembly <3> is pulled fully forward out of the outer case <2>.
4.
Back the trailer smoothly to the desired position.
Содержание AERO 7500
Страница 11: ...Page 11 of 13 AERO 7500 ACTUATOR PARTS DIAGRAM...
