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  • Finally got round to printing some Wing mirror screw covers, quite impressed with the results 🤣


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  • NigelOBB thanked the user C4ix in the forum post, Newbie to the site and pscan tool
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  • NigelOBB replied to the topic ABS Testing in MGF/TF Pitstop

    SundanceUK wrote: My mate is a guy called David Bourne he is based in Staffordshire near to Uttoxeter. He was breaking a few ZT's and 75s last time I went up for bits, although he is finding them rarer to acquire now. He has a good selection of bits about him. I will be calling on him tomorrow as he has some nice nearly new tyres he is selling me.

    I replaced the rear discs today and also fitted new pads and shoes and clocked the old discs, one was running 0.2mm out, which I thought was a bit on the high side, new discs are all running at under 0.1 mm now. Not as good as my TF but I think they will be ok at that.

    I also removed the rear hubs and cleaned the ABS sensors and reluctor rings. Re fitting the hubs I managed to get one of the bearings to tighten up a little more as shown by the position of the dent in the stake nut. I had to re use the nuts temporarily as my replacements had not arrived. I did not swap them, as I rebuilt each side before stripping the other side down. New nuts will be fitted asap.

    I know this is a F and TF forum, but some of this info about the ABS signalling is relevant to our cars so I am hoping that some peeps are getting some useful data from my quest to clear up my ZT's ABS issue.

    I have not yet test driven the car yet, as it was getting on, so will see if there is an improvement tomorrow. The handbrake certainly is felling a lot more useful even without bedding it in!

    Sundance

    Here is a picture of the hub off the car showing the reluctor ring inductors


    Think I’ve met Dave or bought something from him years ago. I’ve had my 75 contemporary se for over 8 years love it. That bearing looks like the one I took of my old Connie.
    What are the back plates like? It might be worth changing them while your at it.


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  • NigelOBB replied to the topic ABS Testing in MGF/TF Pitstop

    SundanceUK wrote: Well the scope tells me there are no faulty signals from the reluctors, so I am thinking its time to look elsewhere. I have a mate who is very local and breaks 75s and ZT's he is a goldmine of parts and usually has in any spares I need. He also does carry a few new bits in stock too...he found a new lower engine mount for a tenner for me and when I needed some injectors, he was just throwing a couple of V6 engines away, so he told me to help myself. Got a few spare rails, seals and injectors. Top man!

    I will be replacing the rear discs and pads tomorrow, so will check the rear bearings out at the same time.

    Sundance


    Fingers crossed, who’s your mate?


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  • NigelOBB replied to the topic ABS Testing in MGF/TF Pitstop

    SundanceUK wrote: The sig gens work well, and they have the same plug fitting as the scope, so the same PSU can be used. Its not very clear which way the electrolytic capacitors are fitted on the board, I think if I remember correctly the -ve leg goes to the shaded part on the circuit board mimic. Use a google search photo just to make sure. Also when soldering the potentiometers, they have to be seated as close to the PCB as possible or the knob will foul on the box lid.

    I will be checking the wheel bearings when I do the discs. I have ordered some new stake nuts for them.

    Sundance


    Love the Chinese lol the board or schematic should be marked.

    Re the bearing, the one I changed seemed ok. It’s the magnetic ring that had deteriorated. I was very sceptical with the advice, if you do change it though it’s easiest to change the full hub assembly, but stay clear from cheap eBay set ups, either get a good low mile used part, or use rimmers dmgrs or brown and gammons


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  • NigelOBB replied to the topic ABS Testing in MGF/TF Pitstop

    SundanceUK wrote: Hi, All the reluctor rings and sensors are working ok, all have correct number of pulses with none missing so the ABS sensing is all ok. I have already fitted new front discs and pads, I now have new rear discs to fit next week while I am off work. They need changing anyway. I am hoping this will improve things a bit.
    I am going to recheck all the front discs with my DTI clock when I put the rears on next week, but they clocked ok when I fitted them originally.
    Fluid was replaced about a year ago along with the brake pipes all round, but it wont do any harm to re-bleed all round.
    Let you know if it works ok.

    The pedal pulsing is only slight but its there, not just quite right. Its possible the MOT tested may not even notice it.
    The little oscilloscope is a great bit of kit, I fully recommend one if you know how to use them. I also bought a signal generator project kit to test the scope with and just to play about with. At just under £7 its a snip and it gave me something to build up on a rainy day. It could also be used to generate a signal to operate a Tachometer or speedometer on the bench.

    www.ebay.co.uk/itm/XR2206-Function-Signa...p2060353.m2749.l2649

    Sundance


    Sounds like you are going through the exact same journey as I did a few years ago with my old Connie. Trikey and Marina Brian from the OC advised me it was the wheel bearing. Changed the hub for a low mile used one and prob solved

    Just bought one of those signal generators, they are cheaper than buying the components to make one.

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  • NigelOBB replied to the topic ABS Testing in MGF/TF Pitstop

    SundanceUK wrote: Yes the rears have the reluctor ring around the end of the bearing face, the sensor is in line with the drive shafts pointing in towards the bearing edge. Anyhow, all four reluctor rings test out perfect with all of them not missing any pulses. The front have a more conventional ring with serrations in. I am looking at the rear discs now, which I am hoping will cure the fault. I have fitted new discs on the front a couple of weeks ago ready for the upcoming MOT.
    The little hand held scope is a fantastic bit of kit for the money and worth having for the 20 quid it cost me.

    Sundance


    How are you getting on with the diagnoses


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  • NigelOBB replied to the topic ABS Testing in MGF/TF Pitstop

    SundanceUK wrote: Yes the rears have the reluctor ring around the end of the bearing face, the sensor is in line with the drive shafts pointing in towards the bearing edge. Anyhow, all four reluctor rings test out perfect with all of them not missing any pulses. The front have a more conventional ring with serrations in. I am looking at the rear discs now, which I am hoping will cure the fault. I have fitted new discs on the front a couple of weeks ago ready for the upcoming MOT.
    The little hand held scope is a fantastic bit of kit for the money and worth having for the 20 quid it cost me.

    Sundance


    I went through the same process as you it to a while to get an answer. Mine went through a couple of mots before I changed the hub assembly ( it’s easier than replacing the bearing ) and stopped the prob, the bearing has a magnetic ring built into the seal. It could also be a mucky sensor. There’s plenty of info on the 75 and ZT OC.


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  • NigelOBB thanked the user SundanceUK in the forum post, ABS Testing
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  • NigelOBB replied to the topic ABS Testing in MGF/TF Pitstop

    G0RSQ wrote:

    NigelOBB wrote:
    Great how to. It’s probably the off side wheel bearing. There’s a magnetic ring in the bearing


    Are you sure?

    ABS is usaly from a reluctor ring (a bit like a toothed gear) fastened on the outer driveshaft joint!


    Was the bearing on one of my 75s. There’s a few bits about it on the oc.


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