abs sensor gap

LT Rider

LT Rider

Joined
May 29, 2007
Messages
85
Location
idaho
I just did a tire change and everything looked good on the balancer, but I can hear the pulser ring contact the sensor for a second or two during each revolution when I spin the wheel by hand. The gap checks out okay except for that spot. I don't know if the sensor is fixed or has moving parts or if it is adjustable. All the 1100's I've ever worked on have always just bolted right back up and the gap was perfect. No wories.

Any ideas why I get this drag? I think I might put it back on the balancer and check for run-out, true, etc and do the same for the pulser ring.

?
 
Tom Mac 04a said:
TBMK the sensor is fix with no adjustment... are the spacers on the correct sides?
Click to expand...

Only spacer on that wheel is on the same side as the sensor and the service manual calls it a "right side collar". I gusss the speedo housing could be considered a left side collar, but the manual doesn't say. Both are there and from my take on things, there's no way to reverse them like on some other bikes I've had....especially a VFR. Like you, I think the sensor is fixed. I'll just remove everything and do it again once I check it on the stand. It was probably doing this before and I just assumed it was A-OK since I'd just ridden it about 1000 miles to get it home. (fly and buy) Just discovering issues with a used bike. It'll work out.
 
Hi,LT Rider.My understanding is that shim(s) are used to ensure the correct radial clearance between the sensor and the pulser ring.For my'97 abs2 1100 this is specified at 0.4-0.5 mm.Sensor is retained by two machine screws,allen key headed.(Info is for front sensor).Edward.
 
edwardgoodwin said:
Hi,LT Rider.My understanding is that shim(s) are used to ensure the correct radial clearance between the sensor and the pulser ring.For my'97 abs2 1100 this is specified at 0.4-0.5 mm.Sensor is retained by two machine screws,allen key headed.(Info is for front sensor).Edward.
Click to expand...

Thanks, Edward. I'm reluctant, for now, to loosen those allen screws. I've not read anything before about shims for those and I would like to know more. Is that in the Honda service manual? Owners manual? For now I loosened the sensor bolt like I do to remove it for a tire change and then re-torqued it with the feeler guage in place at the tightest point on the pulser ring. So far so good as far as free spinning is concerned, but I've yet to ride it. Rainy today and still have some other parts off for exploratory surgery. ---
 
I would guess that the sensor has not gone back in the same place exactly. I may not be doing it right but I have always taken the two screws out and lifted the sensor out. Doing this way I have not had a problem either with the sensor rubbing, or the getting the wheel back on without problems.
Mark
 
LT Rider,Hi.I think Bigmak 96 is showing us the way on this one.Although the mounting points for the sensor are pretty well non-adjustable,it is possible to get the small movement required to achieve the sensor to puser ring clearance of 0.4-0.5mm(FRONT) by biassing the two fixings as they are tightened.The shims fitted to my sensor are there I suspect as an orignally factory fitted item as it was not possible ,because of manufacturing tolerance variations ,to get correct setting.The single shim on my front is stainless & is not shown in any official documentation.Hope some of this helps.P.S.Assume tyre fitter has not damaged Pulser Ring.Edward.
 
Well I've been a few hundred miles now and all is well. Seems to be a couple of good ways to get that gap right and I appreciate everyones input. Good to know. Thanks all.
 
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