Ezgo rxv parking brake assembly

[Jerj7907]

Just to be clear Marathon Man you are talking about the 2 wire plug that plugs directly to the brake correct? If so I will check my cart with the peddle pushed and in a resting position just to double check what Ezgo says but could have swore I get 48 volts when I checked once upon a time.

[Marathon Man]

Suppose to check it with tow switch in tow and key switch in neutral position. The brake will be held open and cart will free roll. But yes two wires on the brake.

[Brandonmorris44]

Where can I buy a new parking brake assembly ?

[Marathon Man]

A local dealer or online? I've seen them on eBay.

[koshari]

we recently acquired an 2008 RXV which had brake issues.

I Can confirm our rear motor brake has 48v going to the coil checking on the unplugged plug whilst attempting to drive. but keep in mind with the brake coil in the circuit it may be less due to voltage drop of the actual coil in the brake.

I haven't tested the voltage with the actual brake in situ as its not easy to access the terminals.

Our brake was playing up and basically wasn't pulling the stationary brake plate inside the brake assembly away enough from the brake disc enough to disengage. after cleaning lubricating and adjustment of the lever on the spline and greasing the threaded lever shaft its working well.

this 2008 model has the lever, i dont know if the newer version of the brake is adjustable however.



the controller DEFINATELY needs to see the brake load in order to ramp up the drive. unplug the brake and this wont happen, I suspect you could put a high power resistor across the terminals of the same value resistance of the brake coil and it would attempt to drive, but i wouldn't be attempting this with the actual brake still attached to the motor as it defaults to the "Braked" position without power.

the brake is easily removed with 3 bolts with a 10mm socket.

next time i take it off i will check the coil resistance. i may also check the voltage across the coil whilst in situ if i can get my meter onto the terminals without breaking the cct whilst doing so which may require another plug/socket.

as per other posts our solenoid takes a little bit of time to click after selecting a direction as well. Maybe the slug in the solenoid may need some lubrication.

[HiTechRedNeck]

Hi RXV tech here..

Brake with handle is old style-- failure prone. i reccomend replacing it.

RXV does POST (power on self test)

one test is

1) apply park brake

2) command motor to turn 1/4 turn forward and reverse

3) did motor turn Yes-- fail no --Pass

if brake is bad from dragging (failure to fully release) or shattered disk,
cart will not move.

Attempting to JUMPER OUT brake WILL NOT WORK as cart will fain "TWIST TEST"

Attempting to jumper out brake can cause controller damage.
I do NOT recommend trying it.

if brake is old style and not working properly , best to just replace it with new style.

for "brake success" you may conceder these suggestions.

1) clean end of motor before installing new brake. brake should slip on easily.
2) use torque wrench to tighten bolts evenly. We use 10-15inch lbs
do not over-tighten (will cause brake failure)
3) brake on motor is "Parking/emergency" brake. pushing brake hard enough to lock tires on moving cart or switching key while cart is moving causes severe stress to brake
and seems to contribute to its failure.

Good luck

[HiTechRedNeck]

fail -- not fain

[koshari]

Originally Posted by HiTechRedNeck

RXV does POST (power on self test)

one test is

1) apply park brake

2) command motor to turn 1/4 turn forward and reverse

3) did motor turn Yes-- fail no --Pass

thanks for that info.

Attempting to JUMPER OUT brake WILL NOT WORK as cart will fail "TWIST TEST"

Very Interesting as our 2008 cart worked/drove with the non releasing brake electrically connected whilst physically disconnected from motor. I could only assume that the firmware on our 2008s brake test is not as comprehensive as more recent models?

Attempting to jumper out brake can cause controller damage.
I do NOT recommend trying it.

I agree however with the correct impedance load the controller wouldn't know the difference.

if brake is old style and not working properly , best to just replace it with new style.

Which is likely what I will do if we have any issues as my father is part owner in the cart and not very technically literate ( he is a retired pastry cook).

for "brake success" you may conceder these suggestions.

1) clean end of motor before installing new brake. brake should slip on easily.
2) use torque wrench to tighten bolts evenly. We use 10-15inch lbs
do not over-tighten (will cause brake failure)
3) brake on motor is "Parking/emergency" brake. pushing brake hard enough to lock tires on moving cart or switching key while cart is moving causes severe stress to brake
and seems to contribute to its failure.

So the service brake pedal basically actuates the electric park brake rather than letting the electric motor slow the cart with the regenerative braking?

Good luck

thank you

[Brady2]

From what I've been hearing about the RXV control system is this problem can have multiple causes,anything from 1 weak battery to input voltage or ground to controller, I would test voltage and do voltage drop test on grounds first. But your probably going to end up having to plug in a scanner and check inputs or you'll be throwing parts at it till it goes away.

[cgtech]

The service brake uses "regen" to slow the cart down... The motor brake (on the end of the motor) only is intended to hold a cart still after "regen" has brought it to a stop. The motor brake, under normal driving, is NOT supposed to be slowing a moving rxv.