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you don't have to pull the transmission, but you will probably have to lift the subframe to get enough clearance to remove the P6 cover

oh darn... there are a few discussions on it including one couple's saga with their failure and repair(the failure wiped out the P6 casing)...

You must remove the inner battery pocket tray and replace it with a flat plate. You must cut the pockets out of the lid to make enough height to fit the group 31’s. If you cut carefully the bottoms of those pockets can be carefully cut to fit flush in the holes left when cutting the pockets...

But to what purpose? You still need the heavy cable to starter motor case, and it still must function properly, so the added cable battery to chassis serves what purpose, When there is already one battery to starter and a properly cleaned main ground connection strap starter motor to drivers...

Not sketchy, neglighent… The possible issue when doing this is that if something happens to the main ground lead between batteries and starter the starter will attempt to pull all its starter current thru the alternate ground path and the starter to frame ground, and the braided straps are not...

Awww cute little fella…:)

Appendix F in the operators manual…

Yes the fronts are inputs and must be vented so they don’t store air in the line and act like an input. IE you step on the brakes and they won’t release as the stored air in the line to the blue gladhand keeps brake pressure applied untill it leaks away, or y0u go to set the park brakes and...

The first pic looks like the front brake quick release valve. The second pic is the check valve that feeds back to the wet tank to charge the brake,system when towed. from th8e front red gladnand the line splits. One line goes thru that check to the wet tank, the other line goes thru the top...

Where is the noise coming from? There is a pressure safety relief on top, those sometimes leak, but air would have to be leaking back thru the check valve under the top center dryer output port… the only time you should see air out of the safety(pull/twist the knurled nozzle) is when the...

Yes, thats normal. The service tanks have a check valve on their input from the wet tank. This isolates them from the wet tank and each other(fed motor vehicle code)… the accessories fed from the wet tank do so via the air brake protection valve(looks like a regulator) which only opens to...

The only checks are at the outlet of the dryer and the inlets to the service tanks… you can see them in the photo you shared, or in the photos I shared of the re-plumb… the one on the dryer outlet is built into the top cover of the dryer… Unless the compressor output and sense lines have...

Me either, especially ctis as it uses wet tank air out the back side of the tank thru the protection valve(looks like a regulator)… That second line off the wet tank is the pressure sense line. how is the governor cutting off at 125PSI if the wet tank is not reaching 125 PSI?

Remove the T fitting on the back end of the fank and confirm the port that feeds the wet tank is not plugged. air flows from the compressor to the dryer, then from the top center dryer output down to that T on the back of the wet tank… unless someone has altered this plumbing pathway, I do...

Here are before and afters of my wet tank plumbing… swap 2 fittings and hoses and 100% of the air now goes thru the wet tank like it is supposed to…

I would say your drain valve is plugged/deffective as what you describe simply is not possible. Set it to the open position and probe the valve port, its a ball valve so you sh-uld be able to push a wire right thru into the wet tank… Is your fan disengaging? the street T fitting at the to- of...

Well C7 pressure still isn't a "health check" it just means it is trying to send pressure... You could also look at the diff-lock indicator signal, which it alters when the difflock is commanded by the transmission via the mode indicator signal. These trucks use that signal(trans wire 125) to...

there are a couple unused plugs under the pax dash. The trucks use a generic wire harness that supports different options that may or may not be installed in a particular vehicle... The A1 schematic table is not as complete as the A0(doesn’t show all the Plugs in the list) Message me and I...

well the A1 schematics are in the tech manual section here on SS. Forget what year your truck is?

All the flasher power passes thru the hazard switch(its powered all the time) the flasher output passes thru the turn signal switch. Here is a condensed lighting diagram I drew once upon a time:) if the hazard sw gets unplugged the TS wont flash… The cable should have a metal tag with a...