washmaster
New member
I have a two-year on-going intermittant problem with my LW4000. Here's what seems to be happening:
at the rear of the car, sometimes the arch goes to rt. limit ignoring the actual width of the car. The arch then rotates into the T-Bar causing a "arch rotate fail" error. Sometimes the arch rotates 75-80 degrees which is enough to pick up the arch prox and the bridge moves forward. The next rotation then fails as it can't push thru the T-bar to wind up pointing at the enterance of the bay.
This doesn't happend consistently or precitably. Sometimes it'll go several days without an error, sometime it'll be several times per day.
Here's what's been thrown at it:
new prox
new prox cable
new rollers
new pulse bars
new rails (old ones mgf defect)
bypassed festoon back to J1
Some of these things have been changed more than one time. The frequency of errors was most greatly reduced by the festoon bypass, but the problem is becoming more prevalent again.
Also, it should be noted that the correct witdth is maintained at the front of the vehicle at all times, and in the rear, it is maintained on the left. That is to say, it is creeping out from home to the correct postition based on the vehicle width which is being correctly measured by the ultrasonics. I can't say for certain whether it ignores the pulse bar on single rear passes, double rear passes or both.
What am i missing here?
at the rear of the car, sometimes the arch goes to rt. limit ignoring the actual width of the car. The arch then rotates into the T-Bar causing a "arch rotate fail" error. Sometimes the arch rotates 75-80 degrees which is enough to pick up the arch prox and the bridge moves forward. The next rotation then fails as it can't push thru the T-bar to wind up pointing at the enterance of the bay.
This doesn't happend consistently or precitably. Sometimes it'll go several days without an error, sometime it'll be several times per day.
Here's what's been thrown at it:
new prox
new prox cable
new rollers
new pulse bars
new rails (old ones mgf defect)
bypassed festoon back to J1
Some of these things have been changed more than one time. The frequency of errors was most greatly reduced by the festoon bypass, but the problem is becoming more prevalent again.
Also, it should be noted that the correct witdth is maintained at the front of the vehicle at all times, and in the rear, it is maintained on the left. That is to say, it is creeping out from home to the correct postition based on the vehicle width which is being correctly measured by the ultrasonics. I can't say for certain whether it ignores the pulse bar on single rear passes, double rear passes or both.
What am i missing here?
