Troubleshooting HydraStar Electric Over Hydraulic Actuator Clicking

Question

Question:

Brake away works fine but brake pedal in car only makes motherboard relay click any ideas ?

asked by: Gavin P

0

Expert Reply:

If your HydraStar Electric Over Hydraulic Actuator for Drum Brakes - 1,200 psi # HBA-12 is only clicking when you are putting your foot on the pedal there is some troubleshooting you can do. First, ensure your brake controller is compatible with electric over hydraulic brakes and if so, that your brake controller is in hydraulic mode (if it has one).

There are a number of other things you can do, starting with ensuring you have at least 8.5 volts reaching the black wire and making sure the white ground wire is not grounded only to the trailer - this ground wire must be run directly to your tow vehicle's battery ground.

Next, detach all but the blue, black, white, and yellow or blue with white striped wires on the HydraStar and disconnect it from any other wires going to the tow vehicle or breakaway switch/breakaway battery. Then use a separate 12 volt battery and connect the white wire to the battery's negative terminal and the black wire to the positive terminal. If the motor on the unit runs it indicates a fault in the unit and it will need to be repaired.

If it does run (which is normal), leave the white wire on the negative terminal but connect the blue and black wires together to the positive terminal; the motor should then run and it should pressurize; if it does not, again you will need to have it repaired.

Should this check out you can still leave the white wire on the negative terminal but this time connect the yellow wire or the blue with white stripe wire to the positive terminal and again, the unit should run and it should pressurize.

If this all checks out the last thing you will need to do is reconnect all of the wires at your trailer plug and repeat all but the last step. The results should be the same and if they aren't the issue is with your trailer wiring or brake controller.

expert reply by: Kyle S

0

Answer 1

It does sound like there is an internal problem with the Dexter actuator. There are no user serviceable parts on the inside so the only solution would be to send it in to Dexter to be repaired or purchase a new actuator. If you decide to go with a…

view full answer...

Answer 2

It sounds like you are looking for a bearing protector style of grease cap. We have a variety of bearing protectors in several different sizes but none with an outer diameter of 2.02 inches. The bearing protectors closest to your OD measurement of…

view full answer...

Answer 3

You should be able to make your Bearing Buddy Bearing Protectors #BB37SR fit by placing them in the freezer. The cold temperatures will cause the steel to shrink slightly but they will likely have to sit in the freezer overnight to ensure they get…

view full answer...

Answer 4

If your hub has a grease cap opening that measures 2.04 inch the correct Bearing Buddy is the part #BB2047 that you referenced. Or for a stainless steel version you'd want the part #BB2047SS.

view full answer...

Answer 5

Square axles can be tough to determine capacity. Often times the same spindle fits a range of axle capacities. The best way to determine the capacity is to get the inner and outer bearing numbers stamped into the metal of the bearings like you did.…

view full answer...

Answer 6

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures the…

view full answer...

Answer 7

Unfortunately, the bearing buddy cannot be expanded in any way. What you would want to do to ensure a good fit for your bearing buddy to the hub would be to measure the inner diameter of the hub bore with a dial caliper #PTW80157. Once you obtain the…

view full answer...

Answer 8

It is a good idea for both axles on a tandem axle trailer to have the same rating. Even if the 6,000 lb capacity of your axles is rated high enough for your trailer, if you have a load heavier than 2,500 lbs sitting over your 2,500 lb rated axle it…

view full answer...

Answer 9

The wiring colors and functions on both actuators are pretty standard so the wiring information for the HydraStar Electric-Hydraulic Actuator for Disc Brakes, #HBA16, will be the same as that for the Dexter Electric Over Hydraulic Brake Actuator,…

view full answer...

Answer 10

I can help you out with how to determine the correct hub and drum for your trailer, though I was unable to identify that part number. In order to find the correct replacement, there's a number of things you will need to know, starting with the…

view full answer...

Answer 11

If it is a 1000 psi then it would be the Hydrastar for drum brakes. The newest one is #HBA-10 and it has different wire colors, see picture. So you know that black is 12 volt power in and white is the ground. Blue/white goes to the break away switch.…

view full answer...

Answer 12

Most likely there's an extra wire that was intended to run up to the third brake light of a camper shell mixed in with your trailer wiring harness as this is very common with 2003 Silverados like yours. So your best option is to test all of the…

view full answer...

Troubleshooting HydraStar Electric Over Hydraulic Actuator Clicking

Product Page this Question was Asked From

Continue Researching