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Topic: Rear ABS sensor install (Read 939 times) previous topic - next topic

Rear ABS sensor install

Can the rear ABS sensor be installed with only the tires removed, or does the rotor have to come off also.
I'm trying to decide if this can be done when I have tires replaced or if I should arrange for a higher level of competence at say Coach Care or Josam.

My ABS light came on and stayed on 3 or 4 years ago. Last year I found one of the rear cables cut in half (likely a squirrel gift).
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT

Re: Rear ABS sensor install

Reply #1 –
Dave, You might be able to replace that rear sensor with just the wheels off but it will be tough.  In the REAR that sensor is a 90 degree sensor, the STRAIGHT one will not fit. The sensor is hidden down behind the brake rotor and is affixed to the hub.  While you are in there clean off the serrated sensor wheel that is attached to the hub, it collects dirt and crap.  I gave up on the ABS a long time ago after spending countless hours trying to fix an obsolete system.
Have fun.
Gary B

Re: Rear ABS sensor install

Reply #2 –
I assume to clean the sensor the rotor DOES have to come off...
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT

Re: Rear ABS sensor install

Reply #3 –
Quote from: Dave Head –
I assume to clean the sensor the rotor DOES have to come off...

I mean the serrated wheel...
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT

Re: Rear ABS sensor install

Reply #4 –
Dave, To clean the serrated wheel get a can of brake cleaner and spry liberally. Watch your eyes.
Gary B

Re: Rear ABS sensor install

Reply #5 –
With the ABS not working in our coach the trans retarder also didn't work.  I metered the sensors at the control box and found the right front sensor bad.  Replaced sensor and all is well.  Dave, if there is enough wire left, I would try to solder the leads back  together and meter out the sensor before I would pull the wheels.
Tom and Linda
1995 U280SE #4636

Re: Rear ABS sensor install

Reply #6 –
Tried that. No luck. The coach is going in for a tire change anyway.
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT

Re: Rear ABS sensor install

Reply #7 –
Interesting. I had a sensor go out a few years ago and my Retarder still worked.  I just did not have ABS brakes.
2025 Wanderbox Outpost 32 on F600 Expedition Motorhome
2015 Born Free Royal Splendor on Ford 550 nonslide version  for sale
Former Coaches  covering. 360,000 miles
1999 34 U270
2000 36 U320
2001 42' double slide U320
2018 Jeep Rubicon

Re: Rear ABS sensor install

Reply #8 –
Ditto with me on the 1997 U 320 we had.
 Richard B.
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel

Re: Rear ABS sensor install

Reply #9 –
I think that different versions of ABS systems have been used over the years.  On my 95 the system was wired into the retarder, when ABS activated the retarder was inoperative.  And when the ABS was not performing the retarder was deactivated. I had to install a jumper in the control box to bypass the retarder circuit.  The system in mine was developed according the A rep that helped with me it for trucks in the UK and it was never very successful in the US.
Gary B

Re: Rear ABS sensor install

Reply #10 –
Gary,  Where do you put the jumper for the ABS bypass.  Good to know when the time comes that the ABS is not repairable.
Tom and Linda
1995 U280SE #4636

Re: Rear ABS sensor install

Reply #11 –
Tom, Here are the two documents that I have on file.  The wiring Diagram is what I used to find the connectors for the Retarder but after so long my brain has shut down and I can't remember what connectors were jumped
Gary B.

Michelle, You may want to add these to the files section.

Re: Rear ABS sensor install

Reply #12 –
Quote from: Gary Bouland –
Tom, Here are the two documents that I have on file. 
Michelle, You may want to add these to the files section.

Done - thanks!
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Rear ABS sensor install

Reply #13 –
Thanks Gary.  Good information.  I learned something new today.
Tom and Linda
1995 U280SE #4636