TD-14 Series 142

Texas Denny · Apr 18, 2011

I just bought a TD-14 Series 142. We started it today and it ran pretty good for 10 minutes. It then died. We discovered that someone had turned off a valve at the tank and we obviously drained the system running it. I have bled diesels before with good results but wasn't able to this time. I got excellent flow out of the bottom of the rear filter and somewhat less out of the front filter but no air from either. When I opened the top of the rear, I got nothing. When I opened the top of the front filter, I get nothing. Does anyone know the correct order of bleeding this tractor? Does it need to be running on gas to bleed it? Is there a pre-pump on the back of the injector pump that pushes the fuel through the filters? Never worked on a gas start diesel.

Sure could use some help. Thanks.

Texas Denny · Apr 18, 2011

Do we need to have the engine running on gas to bleed the fuel system? The gas hasn't been running for some long time. The owner always started it on diesel. We are trying to get it running enough to get it on the trailer to bring it home.

M Diesel · Apr 18, 2011

(quoted from post at 15:56:26 04/18/11) Do we need to have the engine running on gas to bleed the fuel system? The gas hasn't been running for some long time. The owner always started it on diesel. We are trying to get it running enough to get it on the trailer to bring it home.

Yes you basically need it running to do a full bleed. That lump on the rear of the injection pump is the primary (or lift) pump. One filter is gravity fed, the second is pressure. Normally the forward one is gravity. As you now know the filters will allow it to run for several minutes with the main tank shut off.

Another way to get it bled is to use air pressure at the tank or break the supply line and insert fuel/pressure there. It is only important to get the second filter filled artificially. Sometimes you can pour in fuel via the bleed bolt.

Almost always these have either bad spark or more likely the butterfly shaft that controls intake air flow will not close completely to divert the main intake through the carb.

Wardner · Apr 18, 2011

It may take awhile for fuel to bleed out the top of the filters. You can remove the bleeder petcocks and place a square cut hose on the threaded hole and suck. Shouldn't take long to get fuel.

Yes, there should be transfer pump on the end of the injection pump that draws fuel from the primary filter and sends it to the secondary filter.

I make this recommendation not knowing what the filter arrangement of the 142 series looks like so I may be wrong. But consider using vacuum somewhere.

Texas Denny · Apr 18, 2011

I think you may be right on. I wondered why there were two lines coming out of each filter base. Any information is very helpful. Your thoughts have helped me understand the system without having to dismantle. Thanks,

Ron in Nebr · Apr 19, 2011

In addition to the other posts- make sure the fuel level in the tank is high enough for it to gravity feed. Not sure about the 14 series but on others people have reported better luck with the tank almost full.

Of course, if you just want it to run long enough to load it you may not want to completely fill the tank. I've heard of people cutting a chunk out of an inner tube that includes the valve stem, and hoseclamping that over the filler neck, then giving it a SMALL shot of air pressure to help bleed.

Texas Denny · Apr 19, 2011

That inner tube trick is a very good one. It is way better than my plan was. It will make this tractor feel like the tank is 10 feet high. Tank is well over half full and I get great flow out of the bottom of rear filter - not much everywhere else.
Thanks!

TD-14 Series 142

Texas Denny

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M Diesel

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Wardner

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Texas Denny

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Ron in Nebr

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