P90 718 Firetruck-Woodway electrical unit - what is it ?

[Ulysses]

Hi all, we are doing a refit on a P90 718 Firetruck from the UK (Isle of Man). It has a Woodway Engineering electrical unit installed in it behind the drivers seat (RHD). We thinkthat it was a way to get 110V for main appliances (such as pumps ?) but are confused whether this is in fact what it did do, how it works and if it is a fully sperate system from the main Pinzgauer 12V electrics or whether they somehow share elements. Can someone please help us by answering any of the below questions.

1/ Does the pinzgauer P90 718 have a 12V or 24V alternator? How many Watts does it put out?
2/ If the alternator is 24V how does the battery get charged? (seems to be not get charged; 11,5V if engine is running)
3/ Can you tell us more about what the generator-box is (Woodway engineering model 2500 ) ? And if yes can you tell anything about the tech specs and how it works please?
4/ Can you tell me how the system of the generator is set ment to be up ? We can see cables from the generator to grey aluminum box underneath the car close to the alternator and from there to the Woodway engineering box in the back of the drivers seat.

Any and all answers are greatly appreciated. Essentially we are trying to either remove this unit completely, if it does offer benefits to us, or alternatively retask it to our current applications.

Many thanks

Philip

[Haf-e]

Looks like Woodway engineering only offers lighting type products according to their current website.

[VinceAtReal4x4s]

A fire service truck would not have electrically powered pumps on it as the amperage needs would be extreme.

If that's the same company that Haf-e found, it was likely a control unit for the (ex?) emergency/warning lighting. If so it would have either multiple outputs or a big, multi-plug that would have branched out to the lighting units.

The alternator would likely be 12v on a fire service vehicle but that's not set in stone. It should have a tag on it somewhere. Take it out and give it to an alt shop and let them check it out/rebuild it.

[David Dunn]

Philip
Usually all aftermarket conversions are done by an independent coachbuilder and are fitted with a plaque from them. This would definitely be the case with fire trucks, That company would have records to what they had done to a vehicle.

As for your Pinzgauer, though the vast majority of TD Pinzes are 24v, SDP did fill contracts for 12vdc trucks . I had a 12v 716K municipal truck made for Sweden.
The easiest (and obvious) way to find your truck’s voltage is to check electrical components ( lights, flashers, relays all have voltages on them).
TD Pinzes all originally had 100 amp Bosch alternators ( on both 12 or 24v trucks).

Your Woodway system is obviously an aftermarket system to meet the demands required by the fire service. Installation was more than likely done by the body company that did all the modifications.

I could speculate on what was done on your truck, but it would be just that. Best would be to take and post some low res pics from the engine bay and of the components in question.

European methods of accomplishing something isn’t always the same, and usually not how we’d do things in the US. Can attest to that with my MoD Land Rovers and my 716K… but after a pint or two, it all come together.

[Ulysses]

Thanks guys, really appreciate it.

[Ulysses]

Hi everyone. We ended up simply removing the unit, a little rewiring and we were back up and running.