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Negitive ground or positive ground

gimpyrobb

dumpsterlandingfromorbit!
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Yes, drink a beer, then refill can with gear oil from trans. You will know it was exactly 12oz. I say this because I drove a truck from Tx to Wi and had the same issue. Once I drained 12oz from the trans and cleaned the clutch, it didn't slip no more.
 

AMGeneral

Well-known member
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UNLESS possibly you have a World War 2 GMC "Jimmy" deuce with a 270 gasser inline 6 and a 5 speed,then it could possibly be positive ground,but it would also be 6 volt( 1 battery).

That would be the only situation I know of where a deuce would be positive ground.
 

USAFSS-ColdWarrior

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is battery one the front batt.or the rear batt.?????or is batt.2 the rear batt. or the front batt.???? oh, i'm sooooooo confused!!!!!
<sigh> Keep this up and we'll be having a little Assault and Battery around here. :deadhorse:

By the way, if this was FuzzyToaster's truck we could have a reason for his Fuzzy-ness. fat lady sings:idea:

Off hand, I just don't know much - but on the other hand... I still don't know much.

Pass the POPCORN please.
 

m16ty

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Drain 12oz out of the trans, remove the clutch inspection plate, and spray some brake cleaner up there. Should be good to go.
:ditto:

Gimpy is right. If you fill the trans up to the fill plug you have too much oil in it. There is no seal on the trans input and it will sling oil out at speed if it's over full.


Here's the way the batteries should be hooked up. Disregard the extra 12v in the diagram.
 

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greg2560

New member
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Yoakum Texas
ok got the battery deal fixed... was hooked up + ground got it - ground now works like a champ. Hey the blinkers work now!!!!!! lol auto flash not maunal flash hehehehe
 

rlwm211

Active member
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In general a dc motor in reverse polarity runs backwards. Your motor was running backwards if you started it with the polarity reversed. At least I would expect this is the case.

It is utterly amazing how a lack of "knowledge" can compound problems better than any other thing known to man.

It is equally amazing how adding some "knowledge" can shine a light on any problem and in general saves time and avoids propelling the individual into the parallel universe of ignorance.

RL
 

doghead

4 Star General /Moderator
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In general a dc motor in reverse polarity runs backward. Your motor was running backward if you started it with the polarity reversed. At least I would expect this is the case
When you reverse the polarity of both the field windings and the armature, the starter will still rotate in the correct direction.

If you reversed only the field windings, it would rotate the opposite direction.


Also, by design, most bendix drives will not work in the opposite direction.
 
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USAFSS-ColdWarrior

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When you reverse the polarity of both the field windings and the armature, the starter will still rotate in the correct direction.

If you reversed only the field windings, it would rotate the opposite direction.


Also, by design, most bendix drives will not work in the opposite direction.
DH:
You're QUICK ! You beat me to posting those thougt by 1/2 hour!
Were you a gunslinger in a prior life?

The reversing starter would never engage the flywheel and therefore probably sound more like an electric mixer than a malfunctioning Multi-Fuel Powerplant.

Glad to hear that the problem has been rectified as of the OP's last update.
:grd:
 

rlwm211

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I did not think about the bendix. DUH

I spent too many hours on the road yesterday and am still getting back up to speed...

RL
 

Barrman

Well-known member
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Giddings, Texas
To get the 12 ounces out of the transmission. You can go in through the fill plug and suck, siphon, scoop it out. Or, you can pull the drain and try to put the drain back on real fast.

I saw that truck just a week or so ago and the clutch wasn't slipping any. At least the tires were spinning and the engine was bogging down when he was trying to back up to me with it.

Having somebody hold the clutch pedal down while you spray brake cleaner on the clutch disc will get more oil off.

Oh, welcome to the fun. Lots of us in the area. Are you by chance an Aggie? Lots of us on here as well. '90.
 

USAFSS-ColdWarrior

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Another clutch slippage cause is OVERTIGHTENING of the bolts that go through the YOKES on the CLUTCH LINKAGE.

When we picked up The ARK, the VFD told us that the clutch was slipping. Trying to diagnose the problem was troublesome since it was intermittent and slippage circumstances were inconsistent.

Suddenly one day, while gearing up after a stop at a stop sign, I was about to grab 3rd or 4th gear and the CLUTCH PEDAL dropped to the floor and the CLUTCH would not disengage!

(NOTE: You CAN shift without the clutch, if you know how. You shouldn't JAM first gear without a clutch, but you can restart the engine while in first gear if you've had to make a stop.)

I was only a few blocks and one more stop sign from the house, so I called my wife and quickly explained my MAYDAY! MAYDAY! MAYDAY!... She cleared a "landing zone" at the curb in front of the house for me to coast in to. On approach, I popped the tranny into neutral and coasted in.

Crawling under the truck, the problem was obvious....

Where the Clutch Throw-Out Arm exits the Bell Housing, the Clutch Throw-Out Arm connects to a Rod that has a Yoke on each end. The forward Yoke on that Rod had the bolt at the pivot-point OVERTIGHTENED to the degree that the linkage could not "flex". Over time, the Rod was being bent back and forth like a paperclip.... eventually, the 1/2" STEEL ROD snapped at the aft end of the forward adjustment threads!

NO ROD = NO CLUTCH !

With the overtightened joint, before the catastrophic failure, the linkage would BIND and the clutch would slip.

Replacement of the Rod and properly pinning the pivot point, WITHOUT cinching it down, CURED the Clutch Slippage Problem.

RECOMMENDATION: Inspect linkage for free movement. Assure that linkage is not binding, thus restricting full pressure plate force application for complete clutch engagement. Lubricate linkage as required.

BTW - The Bell Housing weep hole still drips - less and less with time - so I think our tranny over-fill problem is almost cured too.

:driver:
 
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rlwm211

Active member
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Guilford, NY
Echoing USAFSS, I found a "regular" nut and bolt in my yoke when I got my truck.

I used a nylon stop nut to replace the nut on the bolt that passes through the yoke so does not come off and I can leave the bolt so it spins in the yoke when I am done. This ensuires that it is not overtightened.

Free moving linkage is important in accurately adjusting and operation of a clutch. Anything that interferes with the movement can make diagnosis much more difficult.

Just my 3-1/2 cents worth...(Inflation on 2 cents)

RL
 
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greg2560

New member
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Location
Yoakum Texas
The clutch will hold a slow speed just running in 5th gear going up hills can here the motor pick up rpms. Best i can tell all the linkage is good. Will work on that when get more time
 

stancanpara

Member
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Location
Montpelier VA
Is the duce a postive ground system or a Negitive ground. Mine is hooked up positive ground. And the guy said that the gen was bad. Humm
If he cant see the batteries are hooked up backwards, I'd hope you NEVER ask that guy anything about your deuce again....

Just do a search on this site and ignore the "little old ladies" that like to whine and nit pick.... Most people here mean well and there is a HUGE wealth of information to be had!!! Most times any "Sharp" responses are due to people just trying to get any issues "Clarified" so any info passed on will be the CORRECT information for your situation!

Glad your issue was easy to clear up and enjoy!:mrgreen:
 
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