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Some questions about a TEA20

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Toora Stephen

10-28-2007 19:41:05




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Hi everybody,

I got my new tractor working over the weekend. Now I have some questions!

First of all - starting. I have had a few problems getting the tractor started. One is a battery problem. I am not sure if the battery is on the way out or if the generator is not doing its job. How do I make sure the generator is working?

More importantly, sometimes when I push the lever to "S" there seems to be no connection. Sometimes I can jiggle it in and out a dozen times before it starts turning over. Is it possible there is a loose connection in there somewhere? Where do I look?

Secondly - how do I control the height of the slasher attached to the 3PL and PTO at the back? It seems to be very hard to get it to sit at a certain level?!

Third - is there any way of determining a reasonable estimate of fuel consumption? Mine seems to get through a LOT of fuel! Is unleaded fuel OK, or should I include a lead additive?

I'm sure there will be more questions, but if anyone can help out with these I would appreciate it!

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Toora Stephen

11-13-2007 17:40:40




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 Re: Some questions about a TEA20 in reply to Toora Stephen, 10-28-2007 19:41:05  
Thanks for all the replies, and apologies for not getting back sooner. I have been away and have not had time to look at the tractor much, but I have determined that there are some wiring issues (hence starting problems and possibly also charging problems).

I'll measure the voltages next time I have my multimeter handy.

Fuel consumption is not as bad as I at first thought. Unfortunately, when attempting to remove the air filter I snapped the bolt that holds it together. It is now tied on with string.third party image Any ideas where (in Australia, Vic) I might pick up another bolt or entire filter?

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Jerry/MT

10-29-2007 10:54:37




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 Re: Some questions about a TEA20 in reply to Toora Stephen, 10-28-2007 19:41:05  
If your generator"s working, you should measure about 1 volt above the battery"s nominal voltage (Just after start up)and the ammeter should show some charge current.
The starter switch may need adjustment or it"s contacts may be arced and corroded making for poor contact. A replacement switch is available and you"ll need instructions on how to replace it. Jeff(OH) just showed some pictures of the replacement he did a couple of weeks ago so look in the archives.
There is no position control for the TO"s unless you a) buy, or b) make a unit. Jeff(OH) has the plans and you can see the device in Parts and Pieces on the left. The cheaper method is to use a method reported my marlowe and available in the archives of this forum.

Excesive fuel burn could be caused by many things: incorrect timing, fouled plugs,low compression(worn rings),no thermostat or thermostat failed open, or wrong thermostat, buned valves(low compression again) or misadjusted valves, dirty aircleaner restrictiting the airflow and thus the power, wrong carburetor adjustment, dragging brakes, overloading the tractor, etc.

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Bob (Aust)

10-29-2007 03:44:15




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 Re: Some questions about a TEA20 in reply to Toora Stephen, 10-28-2007 19:41:05  
One other thought - hard starting and high fuel use may be due to an air cleaner clogged with 50 years accumulation of dirt and oil, the odd mouse nest etc.

Check the bottom air cleaner removable cup, if it has a heavy sediment in the bottom there is a fair chance dirt and grime may be restricting air in the top section. Clean out the top wire screen and bottom cup with diesel or kero, refil with clean engine oil to the level mark and re-assemble.

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Jeff-oh

10-29-2007 06:34:26




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 Re: Some questions about a TEA20 in reply to Bob (Aust), 10-29-2007 03:44:15  
To clean the air fliter, Remove the packing and soak as described. If the air filter packing is not removable, TE-20's were not, but later models were, then remove the entire air filter and soak it to clean.



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Bob (Aust)

10-29-2007 03:34:40




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 Re: Some questions about a TEA20 in reply to Toora Stephen, 10-28-2007 19:41:05  
1. The TEA20 was originally Positive (+) earth, although many have been changed to Negative (-) earth. Do you have the battery connected up correctly? The red ignition light should go out when the engine is revved up.If it gets brighter, the battery is connected backwards.

It is a very simple task to convert to either polarity. If you need to re-polarise the generator, ask here.

2. Is the earth lead still connected to a rusty old bolt behind the dash panel? If so, remove it, clean all connections, and re-connect to the top starter motor mounting bolt. That is very likely most of your problem.

3. The starter switch on top of the bell housing (below the battery) is adjustable, forwards and backwards by a very small amount. Loosen off the four nuts and slide it backwards (?) slightly.

4. The TEA20 does not have position control so you will not be able to precisely control the slasher height with the hydraulics. There are a number of options, use a solid toplink and jockey wheel; buy a Zang Thang position control; or use limiting chains.

"Zane", the Zang Thank's ingenious creator, posts on this forum.

Limiting Chains:>Link

5.>Link John (UK), our resident Ferguson expert, assures me you can run unleaded fuel in your Standard engine, without modification and without Lead Replacement additive (although I still use the additive).

The TEA is not normally "thirsty". I forget it's fuel consumption, maybe around 4 liters per hour in average use?

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