1155 idle

Bill in Eastern WA · Nov 28, 2014

I see a lot of youtube videos of 1155 tractors that have a real lope to them. They kind of grunt when they are sitting there waiting to do something. I have read articles that refer to it and it seems really common. My 1155 has always had a pretty smooth idle. It doesn’t have this characteristic grunt or lope. I guess I am curious why it doesn’t have this trait. Was there a way to smooth them out back in the day? Here is a picture of the tractor a with a Massey 57 plow.

Robert Major · Nov 29, 2014

Hi
I got a perk 510 V8 here it has an inline pump on that should be the same design on the 1155.
on the rear at the back of the pump about half way up, mine has a big screw kinda thing on it about 1/2 to 5/8" diameter about 1 1/2" long from memory. I believe it is a governor damper adjusting screw, or anti stall device as I&T manual calls it. if you got that it is probably set as it should be. Mine doesn't lope either. But I have never messed with that screw, to see what happens, it runs good don't mess was my plan.
I&T also advises some tractors don't have it so that could be why they lope also
Regards Robert

MF rules · Nov 29, 2014

(quoted from post at 05:55:18 11/29/14) I see a lot of youtube videos of 1155 tractors that have a real lope to them. They kind of grunt when they are sitting there waiting to do something. I have read articles that refer to it and it seems really common. My 1155 has always had a pretty smooth idle. It doesn’t have this characteristic grunt or lope. I guess I am curious why it doesn’t have this trait. Was there a way to smooth them out back in the day? Here is a picture of the tractor a with a Massey 57 plow.

Some fuel injection shops will balance the fuel pump to take the galloping/surging out of the pump govenor setup. This may have been done to your pump at some point in time.
Don't know if you have owned your tractor since new but possibly at some point the injection pump may of been swapped for a combine pump, the 540 v8's in combines ran smooth cause all were balanced from factory as original equipment.

Dieseltech · Nov 29, 2014

The surge dampening screw Robert mentioned is 504116. Most will surge if you back it out. 1150 never had it but the plug could be removed to install one. The tractors that surge either don't have one or it's backed out a bit. If turned in too far will make the governor action less responsive.

Dieseltech · Nov 29, 2014

Combines had a totally different governor is why they did not have the surge problem.

Robert Major · Nov 29, 2014

Hi
The 510 I have is in my pulling tractor, and came from a fire truck, so is a truck spec motor from England. That could be why it has the damper. I know Perkins did some special stuff to it for performance like cop cars are tuned, and it had an auto trans when i got it.

I'm thinking surging at idle would not be good for it in traffic in a big town like london, England . with the auto trying to creep forward with the surging. Or it could be to do with not wanting a surge in water pump flow for fire fighting as well. i was told if i blew it up I would need another fire truck motor, as even a newer 540 wouldn't go as good,as this one.
Regards Robert

Dieseltech · Nov 29, 2014

The 1150 tractors came with the P5101 Simms pumps while the 1155 had the P5218 pump. Used to have broken pump camshafts on the 5101 as they came with ball bearings instead of tapered bearings like the later pumps had. Hope yours has been updated. Simms never had a center cam support bearing like most Bosch pumps have. I've also seen the tappet shim plate broken if the injector is stuck shut, or someone sets the opening pressure much too high. Another cause for surging is if the weight cage flex ring 503092 is broken, combine governor did not use it but the tractor governor did.

1155 idle

Bill in Eastern WA

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Robert Major

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MF rules

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Dieseltech

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Dieseltech

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Robert Major

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Dieseltech

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