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Messages - cobbadog

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Other Slow Speed Diesels / Re: Hatz E79 - Shop manual
« on: May 22, 2022, 11:45:03 AM »
Good idea with the oil or the Aerostart to find out the quickest way. Also it assumes that the fuel is free flowing all the way to the pump. no blockages inside the tank, tap (if fitted), or outlet of the filter bowl.
I had a McDonald Super Imperial Crude Oil Engine I rebuilt. It was never going to start off the crank and this is with new rings and gaskets etc plus overhauled hyvid bronz fuel injector. In the end I belted it to the PTO pulley on the tractor. That bought it to life and once running for quite some time. After killing every mosquito for a mile radius it now starts off the crank

Engines / Re: HR3 engine problems
« on: May 21, 2022, 11:57:22 AM »
Wish I could answer your questions on that. Spill timing is something I have only heard and read about but never had to do it. Maybe do a search here as it has been explained in th epast in simple terms with good outcomes.
Never tried to understand the internals of an injector, just free them up to make them work, sorry.
Soon enough someone with a lot more knowledge than I have will offer help. So get stuck into the fuel delivery system while a proper answer can be supplied.

Engines / Re: New take on an old camshaft
« on: May 21, 2022, 11:53:40 AM »
It's out of my fild of expertise but admire your attempts at making improvements. Do you think the torque would have changed or HP rating?

Engines / Re: Lister HR3 Bryce fuel pump help
« on: May 20, 2022, 12:20:49 PM »
It sure is as it is compression that heat the fuel air mix to ignite the diesel.

Engines / Re: HR3 engine problems
« on: May 20, 2022, 12:19:40 PM »
Go right back to basics. Is there rubbish inside the fuel tank, is the fuel tap clear and allow the fuel to flow free. Replace the fuel filter and check for free flowing fuel all the way to the pump. Make sure then that fuel pumps freely to the injectors rack and that fuel is making it to the injector. Finally make msure that all injectors are atomising the fuel.

After that check spill timing. Change air filter so that it can b reath as you need air to mix with atomised fuel to ignite. What is the compression like? This should keep you busy for a while. Don't rush over any stage of this as it only takes one thing to stop it. But it does sound like a fuel supply issue as it starts and runs for a short time but will restart and do the same.

Engines / Re: Lister HR3 Bryce fuel pump help
« on: May 17, 2022, 12:13:11 PM »
When cranking without using the decomp lever you do need to be serious about wanting to crank it over. Don't play with it mean to turn it over. Diesels rely on high compression to ignite the fuel air mix. If it was too easy to turn over compression it may not start. There is no shame when cranking to use the decomp levers when the weather or engine is cold or hot. It is just easier on you to start it up. Electric starts can do it without the use of a decomp lever when everything is in good working condition ie good battery and starter motor.

Engines / Re: SR2 starter replacement
« on: May 16, 2022, 11:57:06 AM »
Good thinking Hugh. Our Club used a lot of dry ice to help shrink the cyliner liner in the Clubs big Tangye engine. Even then it was stubbourn but got it out in the end.

Engines / Re: SR2 starter replacement
« on: May 15, 2022, 11:45:11 AM »
Very well done, looking better all the time.

Engines / Re: SR2 starter replacement
« on: May 14, 2022, 12:10:42 PM »
What way are you intending to freeze the shaft and warm the bearing? On a small shaft I was able to put it in a plastic bag and hid it in the freezer inside overnight. Never got caught either. Then when it was time I was able to get enough heat from a heat gun for stripping paint. You don't need a huge variance but enough to do the job.

Engines / Re: SR2 starter replacement
« on: May 11, 2022, 12:12:43 PM »
Try the local bearing shop as it is part of a bearing adjuster. Or have a look online at some nut and bolt shops, you never know what will turn up.

General Discussion / Re: Another Roadside Attraction
« on: May 09, 2022, 11:59:40 AM »
Okies. Did not know EdDee b ut I did know Glort ad we almost caught up one time as he travels past our front door when he travels up the coast. Un fortunately it never happened and I have a feeling I know why.

Engines / Re: Lister HR3 Bryce fuel pump help
« on: May 08, 2022, 11:50:52 AM »
You should be able to buy snap rings at the local bearing shop. Once back together,  bleed the fuel all the wy back through the fuel system from tank, filter, pumps to the injector. By doing this you eliminate having to crank the engine over for ages before being able to start up. I like to use my decompresion lever to hand crank it over to get a bit of momentum then drop the lever and away it goes.

General Discussion / Re: Another Roadside Attraction
« on: May 08, 2022, 11:44:27 AM »
Sorry dax021, not heard of the place

General Discussion / Re: Another Roadside Attraction
« on: May 07, 2022, 11:57:12 AM »
Cheers for the extra info. It is amazing at how many members from right around the world contribute here.

Engines / Re: SR2 starter replacement
« on: May 07, 2022, 11:55:50 AM »
Yes, I have been guilty of using the cold chisel on the final drives of the David Brown tractor but they were quite large in diameter as well. It came with all the warnings of how you MUST tighten them with a C spanner so they are very tight. Ignored and tightened them as tight as possible using the same tool they were undone with, a cold chisel but a blunt one.

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