New owner of Vintage Bus 1980

[Joe Camper]

thats a damn good looking bus. do it right.

[freds]

Hi Everyone

Been doing some research on my bus and reading the forum. I have gleaned from the forum that I should do the following action items:

1. Register as the current owner
2. Open an account for parts
3. Request the manual on CD disk

I have tried calling Prevost multiple times and wind up in telephone tag where they don't know what I am talking about or go into call back limbo.

Any suggestions?

Thanks

Fred

[Gil_J]

You can download all of documents from PrevostCar.com The older the model year the less likely you'll find clear copies of all of the documents.

[freds]

Just an update on the Jake Brake problem. It turns out their is level one and level two Jake brakes. I believe the level one (low) position involves a couple of cylinders per bank and level two does all the cylinders.

Anyway when you have level two the low position is to activate just one bank and the high position is activate both banks which requires the three position switch.

The wiring diagram for my bus indicated only one control wire from the front to the back, which is what you need for level one. More wires are needed for level two control. So the operator manual indicating a off/low/high switch was a red herring.

I found the wire from one bank hanging loose and not attached to the throttle buffer switch.

Before reconnecting I measured the resistance on the connected bank and the disconnected bank.

The connected bank was 16 Ohms and the disconnected bank was 24 Ohms.

Simply attaching the wire did increase the effectiveness, however still not a robust response or change in the exhaust sound when engaged.

However when I turn if off while engaged it is more a definite effect/feedback.



Looking from the back of the engine; yellow is a wire going to the left bank, red is a unused terminal and blue is a wire going to the right bank of the engine that isn't hooked to anything.

Below is picture of the wire coming out of the right bank and there is similar one on the left bank.

[freds]

Fixed the speedometer, got to looking at the circuit diagrams and it showed four wires for connections.

Pulled the speedometer and only three were hooked up!!! After tracing wires the missing wire was the power wire, fished around in the dash and couldn't find anything that looked like it would reach.

Anyway the previous owner stated that it used to work, but hasn't for the last couple of years, so a bit mystified as to how it could have previously functioned without a power wire.

Provided a replacement power wire and it immediately started working again.

[Gil_J]

Fred, great effort. Sometimes you just have to dismiss what a previous owner tells you.

[John L]

Fred right on, that's a fine looking classic Prevost. I like the older ones the best. Mine is a 96 but that's only cause I insisted on a Series 60. You're hitting the ground running hard, very cool.