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Working with a member on his A0 brakes. Considering deleting the Load Sensing Valve since the A1+ trucks including my A1R don't use it and seemingly have no issues without it. Here's the A0 pneumatic diagram and the A1R pneumatic diagram.
It would appear they simply deleted it. The later diagram has the Modulating Valves for the ABS but AFAIK the ABS has no ability to replace the function of the LSV.
We have already upgraded the rear brake cans to the A1R type 12 cans but are not really seeing the braking improvement that we expect based on my experience with my truck and the older style pedal assembly. Perhaps it could be the LSV needs adjustment but then - if the engineers just deleted it after the first generation of trucks and it's really not serving a useful purpose I would rather just get rid of it entirely.
It would appear they simply deleted it. The later diagram has the Modulating Valves for the ABS but AFAIK the ABS has no ability to replace the function of the LSV.
We have already upgraded the rear brake cans to the A1R type 12 cans but are not really seeing the braking improvement that we expect based on my experience with my truck and the older style pedal assembly. Perhaps it could be the LSV needs adjustment but then - if the engineers just deleted it after the first generation of trucks and it's really not serving a useful purpose I would rather just get rid of it entirely.
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