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18 hp Vanguard wiring brand new never run

32K views 20 replies 7 participants last post by  Lionel  
#1 ·
I am installing a new Vanguard 18 in a frame that i am rebuilding for my loader. The frame is bare,zero wiring,switches,etc. I have completely rewired Cases before but they always had a Kohler with a starter/generator and a regulator with a starter solenoid. I have no experience with a Briggs and could not find a schematic in the manual section nor on the Briggs web site.
The engine is:Model 305775-Type 0128-E1-Code 07010911.
If you look at the picture, this what I have.
According to Briggs, the engine has a 13 Amp charging circuit.
Am I correct that the terminal on the bottom of the starter goes to the pos battery.
Instructions only said the purple wire goes to the ignition switch and should have 12 v when in the run position. Don't know where the red wire goes.
What I have read so far is that you DO NOT connect 12v to the coil for starting/stopping the engine?? Instead you de-energize the fuel solenoid?? On what wire or how does the charging current get back to the battery, hopefully you are not going to run 13 amps through the ignition switch.
I haven't bought any other parts for the electric system yet and I don't want to fry a rectifier before I even start.
Thanks for your help, if there was a schematic on this forum, I'm sorry, I couldn't find it.
Bill
 

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#4 ·
bbpits,
A few things need to be cleared up about your 18 Vanguard:
Your pic shows a horizontal shaft Vanguard engine, but the model number (305775) is not correct. An 18 Vanguard would be a 350 or 356 if a later model and 775 designates a vertical shaft engine, plain bearing pressure lubrication, electric starter only 12 or 24 volt gear drive. Based on the pic, which is a horizontal shaft engine with electric starter and alternator, your engine is likely a 350447.
 
#9 ·
For Bob Mac;
I have been working on the tractor and did not check out the discrepancy you observed on my new engine.
As I said, I bought this from Small Engine Warehouse and they modified it to fit a Case 444. When they reassembled it, could a fan shroud from a 18 hp vertical been installed instead of the original shroud?
I have looked at pictures on their site and a 18 hp vertical and horizontal look quite similar.
It would only make a difference later on if I would need parts and I would like to know the real serial number of my engine. Do you know if the serial number is stamped any where else?
Thanks for your help.
 
#5 ·
What are you using for a frame for a loader?
Your pic shows a horizontal shaft twin Vanguard with a starter motor, a regulator/rectifier and a relay. Older engines need battery power from the key switch for ignition. Newer engines such as the Vanguard make their own spark by cranking over. To shut them down, the primary side of the ignition coils needs to be grounded. The stud on the side of the blower housing, where the white wire is connected, does this and the white wire is connected into the relay. The relay is there so a standard battery power ignition switch can still be utilized. The regulator/rectifier shown is the usual for a 16 AMP charging system. The red wire from the R/R that is connected to the purple wire is the charging system output to the battery directly or thru the keyswitch. The red wire coming from the relay goes to the battery ignition terminal on the keyswitch. The black wire coming out of a hole in the cooling baffle and near the R/R is connected into the relay and is for the fuel shutoff solenoid in the carb. You do need a starter solenoid to operate this starter motor. Check out the pic of my 18 Vanguard repower in a 4018 that originally had been Onan P 218 powered.

 
#10 ·
Hi bbpitts,
The blower housing for a vertical shaft Vanguard has a different part number from a horizontal shaft Vanguard. Some Briggs engines have the model information acid etched on the engine, not sure if they all do. I don't see it on my 2004 vintage horizontal shaft 18 Vanguard. The data plate on your engine is for a vertical shaft 16 HP Vanguard, but you purchased a horizontal shaft 18 Vanguard supposedly. I would contact Small Engine Warehouse, explain the situation and request that they correctly identify the engine that you purchased and provide another blower housing with the correct data plate for the engine that you purchased. There is still a question as to if your engine is a 16 or 18 HP Vanguard.
There is a clamp and bracket available to mount a starter solenoid onto the starter motor, but regardless of where it is mounted, you will need a starter solenoid.

https://www.briggsandstratton.com/c...m/content/dam/briggsandstratton/na/en_us/Files/FAQs/2016_RepowerEngineSpecs.pdf
 
#7 ·
Gory and Bob
Thank you
Don't know about the engine numbers, I bought this from Small Engine Warehouse.
I sending a picture of the plate that is on the engine.
Thanks Bill
 

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#8 ·
Bob
To answer your other question about the loader frame. The frame is a 444.
The inside of the frame is boxed with 1/8 plate and the outside has a 1/8 by 3" plate welded from from mid engine position to the end of the frame. I have already purchased 4 lug hubs and axle stubs and I have not made a decision on the rest of the front axle yet. I also made a frame for a weight box that will be semi permanently bolted to the back.
if you look at my earlier post, I have already made the loader and it works great.
This is not intended for construction work, move a little dirt and a few bags of mulch.
I need a loader like I need a hole in my head, I just like to weld and make things.
Bill
 
#12 ·
Bob
now you got me scared, wondering if I'd been had. Here are the pictures.
Would it be possible to pull the plugs and measure the stroke?
16 hp has a 2.60 66mm stroke and a 18 hp has a 2.76 70.00 stroke.
Bill
 

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#14 ·
This morning I talked to Mark at Small Engine Warehouse and sent a picture of my tag,he was very helpful.The number 356447 and the serial number is stamped on the starter side valve cover. It is a horizontal 18.
He doesn't know if the shroud was switched or if it left Briggs factory that way.
He is still researching it to find out who screwed up.
Anyway, I have the engine I ordered with correct numbers so I can get back to working on the tractor.
I did buy an ignition switch for a Vanguard and I have a starter solenoid, to have it running by the weekend.
Thanks for your help
Bill
 
#15 ·
All horizontal shaft Vanguards have cast aluminum valve covers and I have never seen any that had the model numbers stamped into them.
The newer series of vertical shaft Vanguards are spinoffs of the commercial series engines and have stamped sheetmetal valve covers with the numbers stamped into the starter motor side valve cover.
On your bill of sale from SEW should be the numbers of the engine, they may be the wrong numbers or the correct numbers.
When I do a repower, I give the customer the numbers of the engine desired and have them order and receive it. This way the warranty is in their name as I am not a dealer and not authorized to retail engines.:geek:
 
#16 ·
I recently purchased a 2" tachometer that is settable for 1 to 10 cylinder.
The instructions say to connect the tach signal wire to the coil.
At Briggs site I found the following wiring diagram,

My though would be connect to the primary side of the ignition coil?
Also, if this is the correct wiring diagram and both plus are connected to the secondary side of the coil,then do both plugs fire at the same time or on each revolution?
thanks Bill
 
#17 ·
I recently purchased a 2" tachometer that is settable for 1 to 10 cylinder.
The instructions say to connect the tach signal wire to the coil.
At Briggs site I found the following wiring diagram, View attachment 119767
My though would be connect to the primary side of the ignition coil?
Also, if this is the correct wiring diagram and both plus are connected to the secondary side of the coil,then do both plugs fire at the same time or on each revolution?
thanks Bill
Hi Bill, I think some more info will be needed to help you out with the tach install. I'd suggest posting the tachometer info (website/hyperlink) from where it was purchased.

In regards to the coil, a vanguard engine uses magneto ignition, so the only primary wire should be the kill switch lead that goes back to your ignition switch. So when you shut the key off the primary winding in the coil is grounded. With the primary winding grounded voltage cannot be induced into the secondary coil winding to fire the spark plugs.

The info provided so far suggests you may have a tachometer for a battery ignition system, as those will monitor primary switching(on/off) at a coil terminal to determine RPM. Most common magneto ignition tachometers are an induction type. These will use a lead that is wrapped around the outside of the spark plug wire to detect secondary firing pulses to determine RPM.

Until you sort out what you have tachometer wise I would not hook it to the coil yet.
 
#18 ·
Can anyone here help an electrical idiot? I have a case 446 that I mounted the vanguard 18 from small engine warehouse (who are no help what so ever with tech support) and I have zero wiring on the tractor. Their instructions aren't helpful, I have a ground from the battery to the motor mount, a positive cable running from the battery to the solenoid and from the solenoid to the starter. I know I have to run a wire from the solenoid to somewhere on the key switch but no idea where, I picked up a new key switch that has the letters
On the back (no diagram in the box). The motor has a red and a purple wire hanging off the side, I do see a relay wired in if that helps. So if someone has some crayons and can draw me a picture i might be able to understand. I'm going to post this on the main page but this thread is the best information I've found anywhere.
 
#21 · (Edited)
Lets beat this up for a bit,,
Image

The only change I see to this diagram, would be the solenoid. Notice the solenoid is grounded to frame? Yours should not be that type. Yours should have 2 big posts, and 2 little posts. Lets pretend the ground on the solenoid is the 2nd little post,, that post should be connected the safety side of the clutch lever,, so that when the clutch lever is engaged, it "breaks the ground" thereby causing the motor, via the solenoid, not to start.

Let others correct what they see wrong with this schematic,,

If it was me, I'd work my way back on the motor.
Starter has what connected to it? Red wire? Which you've already connected
Rectifier, has what connected to it? Purple wire? I assume you have an owners manual that might help here?

What stops the motor? isn't it via the key switch, going to ground when turned off?
I do believe, the markings on this key switch, are the same as the ones you posted on another post? Seems to me to match anyways,

Here's a picture I pilfered from one of Bob's post, including his post,, (((Mackie is his user ID, and it would appear he has done several of these,, so might be worth a PM to Bob to attarct his attention?))))
I believe, he's talking about how to turn the motor off..
((Some info about original Vanguard powered Ingersoll tractors:
Vanguard engines as are all newer designed small engines produce their own spark just by turning them over. This means that to shut the engine off, the primary winding of the coil needs to be grounded to stop them from producing spark. The key switch has a terminal on it that when the key switch is turned to the off position it is grounded. This wire is in the connector that is plugged onto the rear of the key switch and in the wiring harness and comes out and connects to a terminal on the blower housing on the starter motor side of the engine, see the pic.
Gas Electrical wiring Wire Cable Telephone





Anyways, good to start as a discussion point.