![]() In any event I suspect that front and rear valves (ABS or replacement) would be different due to the tie-in of the emergency brake in the rear. Some, like mine, are an integrated relay/ABS valve while others seem to have a relay valve with separate ABS valves between that and the wheel. Off the record one Haldex tech said I could replace it with any standard relay valve with a 4 psi break-open.įoretravel appears to have used several different brands of ABS (with different configurations) during the 90's. The leaking valve in my case was the front one - in this case a Haldex brand which incorporates all the ABS action within a single valve block. There is no single ABS valve, so no single answer. Quote from: Lon and Cheryl - September 11, 2018, 10:55:16 pm I have a leaking ABS valve on my 95, DO you have any info (part number, manufacturer) on the replacement non ABS part? thinking that dumbing out ABS was illegal). Then, even if he can find a non-ABS replacement he may have to cope with the same issue I did of going to 5 different places before someone knew DOT regs well enough not to refuse replacement due to fear (i.e. I pointed out the lack of replacement for the potential buyer to consider some form of stockpiling if he planned to keep a 2002 coach for some time because in 5 years he might be in the same boat. The bigger issue was parts availability combined with the reluctance of mechanics to replace the bad ABS valve (the valve had an internal leak which took the air down from 120 to 30-40 overnight). However, to be fair that coach also had a big CAT engine and Jake brake which would put the coach nose down if deployed on high. For 5 years prior to buying this rig I drove an older Vogue which had neither ABS nor disk brakes and had no trouble stopping that heavier coach. To embellish on the statement that I made in the OP's reference I, frankly, wasn't (and still am not) particularly worried about the ABS. Not intending to insult or embarrass or second guess any of our members - I'm just curious about the real value of ABS on big motorhomes. Have any members with ABS equipped coaches ever actually used the anti-lock feature? Is there any indication to the driver that the anti-lock is activated? What was the situation that required ABS? Did it prevent a crash? Could it have been avoided? However, I also realize that many Forum members have a great deal more time than I behind the (coach) wheel. It just seems to me, based solely on my almost 60 years of driving experience, that most emergency braking scenarios could be avoided by defensive driving techniques. Perhaps we are just lucky drivers, or we don't ever drive in the kind of traffic that requires "panic" stops that would lock the front wheels. Slight shudder through the brake pedal and a surprisingly abrupt stop - but that's it. In fact, I took it out in a parking lot one time and purposely locked up the brakes, just to see what it felt like. Our car has ABS, and in the 8 years we have owned it, I have never felt the ABS activate because I have never braked hard enough to need it. Our non-ABS coach has (in my opinion) excellent brakes, but I very seldom ever need to utilize their full stopping power. That was coming down a small hill, on rain-slick muddy pavement, in a camp ground, when we were going about 5 MPH. In the 5 years we have owned our coach, I have only felt the front wheels "skid" one time. But whenever I hear about "ABS" on a 15 ton motorhome, I always wonder how often such a feature is ever actually activated. ![]() I completely understand the frustration BillO must feel - being forced to disable a OEM safety feature on his coach because it can't be fixed. After posting here, beating the bushes, and calling every source I could find I had to replace that valve with an old style non-ABS version and disable ABS completely.I'm well aware of the "unobtainable ABS valve" problem from previous posts on the Forum. Quote from: BillO - September 10, 2018, 09:23:07 pm With my 1997 (along with another owner I'm aware of) I've had to disable the ABS because Haldex obsoleted the front relay valve with no replacement.
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