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On the A0, K24 is the starter lockout relay. It and K11 get powered when the main sw is turned on, and are de-energized when the oil pressure switch hits 15PSI. This enables the alternator and disables the start button/circuit. On the A1, K11 does double duty, energized it powers the start...

What is your oil pressure idiot light doing? K11 provides the power to enable the alternator when it is DE-ENERGIZED. On the A1, The neutral relay(K26) provides the power to energize K11, and the 15PSI oil pressure switch provides the path to ground to complete the circuit to energize K11 and...

I am sorry that is completely unacceptable. You need to deliver that mess to me immediately so I can see to a proper “disposition”…

Dont forget the slave receptical:)… They branched the 28V line to the slave receptical off of the disconnect sw and they split the output of the disconnect relay 28 to the starter and LBCD. On the A0 all 3 of those lines run to battery +28V…. My A0 had 6 leads total into the battery box. I...

The A1 moved some connections used in the A0 from the battery box to the A1 switch box. The single wire toward the cab is probably the main ground to the starter. The 3 wires to the switch box are probably ground for the slave connections and 12 and 24 to the manual disconnect.

That stud might be part of the manual/hand throttle mount on the A0…

Little thing on top of the gear case just outboard of the spool release lever? It is called a relief(part#13 on the 24P exploded diagram), it may be a vent for the gear case housing. I have not seen a spec for servicing the gear case, I am not sure how it is lubricated, but if you had a shaft...

The A1 and A1R are wired the same. You can find an A1 schematic in the manuals section here on SS. in the end pretty basic: 2 grounds a 12 and a 24 cable… One ground goes to the starter neg terminal(front of starter case). A second ground goes to the slave-jumpstart connector. One 12V goes...

4 temp sensors on an A0. 1. As mentioned for the ether system on the 1” crossover pipe that runs across and down to the trans cooler/heatexchanger. the information on this switch is conflicting, mine opens at 35F, so no ether above that temp. 2 For fan control, located on the upper radiator...

Actually you want restriction if any on the outlet/vent port, and personally I don’t think it needs it. Remember the fan works inverse. It applies air to release the clutch. Like driving a manual, you want to release the clutch quickly by stepping quickly on the pedal(applying air). And you...

Yea thats actually not a bad place for it…

I got on for the lugs as well. Works great, but it is a 1” drive and I didnt have a 1”drive socket that fit the hucks or a 1”-1/2” adapter…

I was going to try that up in the lift structure frame, but I didn't have the adapter/socket combination I needed to employ my multiplier. I did find, since it was dam difficult to cut them all off perpendicular in that lift channel, that any cut down thru the outer collar loosened its grip on...

We shouldn't even call them bolts. Huck rivets would be more appropriate IMO…:)

Either this guide is to push/pull the cable to a certain position to get it to clear an obstruction, or it is there to keep it from sagging. At any rate, I would try and position it so it keeps the cable as close as possible to its tensioned line of travel. If it is pushing the cable out of...

Park brake works in reverse. A capped emer glad-hand can keep you from setting the park brake, not releasing it. You could have a leak or a anti-compounding valve issue. Or a rusted brake shoe… The proper way to delete the front glad-hands is to bypass/remove the 3 two-way valves under the...

They may be for dump bed…

Yea the plugs he is referring to are under/behind the instrument panel. If you loosen the knob and raise/tilt the steering wheel as far up and back as it will go, you should be able to remove all the panel bolts and raise the top enough to access the wiring harness. You are looking for some...

The purge valve in the center of the truck beside the transmission is for the front axle. it will drain any air leaked from the wheel valves. i suspect you have already fixed this, as this sounds like another issue I commented on over on the FB group. A restriction in the line, in this case...

Oh ye Yes, Christians arduino based controller should work on any truck, same as the manual approach, as the original controllers used the same PCU control and pressure sensor pinouts on that cannon plug H is 28V, F is ground. R, B & C(to F) are the 3 solenoids. b,c & j are the PCU pressure...