Search results

I am not sure it is listed in the manual, but I have measured service pressure and it was over 100PSI when I did it. But it was my grandson stepping on the pedal and I am not sure exactly how hard he was stepping on it and what the primary/secondary pressure gauge was reading at that instant as...

I said the pressure was greater in the front, as it receives full system air passed by the treadle at full depression. The diaphragms are the same size, but there are 4 actuators to fill in the back vis the 2 actuators in the front... IE: if the cans are equal size, 2 cans at 3XPSI = more air...

Interesting. Because of the proportioning valve, and according to that chart, the pressure is a lot greater(3X?) on the front than on the rear, but the rear is twice the chamber volume, so it might take a little longer to release the front... did you lock them up while applying brakes...

Interesting, I would assume this would be with an empty truck, and not one with an extra ton or so of cargo in the bed, even though the initial set-up for the procedure doesn’t stipulate this...:) note the pressure diff between the 1078 and the 1080(cab and chassis only, about 2400# lighter) ...

That is what it sounds like. Did the procedure have you setting it for a particular pressure? unless they have some arbitrary pressure spec in mind, that doesn’t make a lot of sense for setting the proportioning valve. I mean the point of the valve is to byas the brakes for varying weight in...

How did you know it was the park brake? Did the park and emer brake lights illuminate in the indicator panel?