The Old Machinery Magazine Forum

Forum Categories => Marine Engines => Topic started by: Netey on 19 May, 2021, 10:29:37 am

Title: Searching for information on a Ud42 Marine engine
Post by: Netey on 19 May, 2021, 10:29:37 am
Good Morning,
I was wondering if anyone could help. My partner and I have recently Purchased a old Ferro boat which is fitted with a Old Marine engine. I am having a lot of trouble locating any information or specs for this engine. Could anyone Help? The Plate Says UD Diesel Engine Model UD42 Type 1 Serial Number 22489 max output 165ps at 2200rpm Minsei Diesel Engineering co LTD. We are hopping to restore this engine if we can.
Any help would be greatly appreciated.
Thank you with much kindness.
Lynette
Title: Re: Searching for information on a Ud42 Marine engine
Post by: cobbadog on 19 May, 2021, 03:55:28 pm
Hi Lynette and welcome to the Forum.
Below is a company that I have source some old Seagull parts many years ago. It will be a long shot but always worth making contact either by phone or look up the website and email them.
Minards Diesel
Diesel Engines and Spare Parts Specialist. Minards Diesel P: (02) 4914 3800 F: (02) 4914 3888 1/20 SPIT ISLAND CLOSE MAYFIELD WEST, NSW 2304

Sounds like a very unusual engine and never knew that UD made marine engines. Another long shot is Nissan Australia which owns or owned UD so that is another option.

You also may find that parts may be interchangeable with many others so depending on what is needed they could be sourced from the usual places for rings and bearings and even gaskets if required can all be sourced locally and made as well. Injectors and pumps may be different but like many diesels that run similar pressures have similar parts.
What do you think you need so far?
Title: Re: Searching for information on a Ud42 Marine engine
Post by: Netey on 19 May, 2021, 08:52:38 pm
hi john & dee

this scott lynette's partner thankyou for the information i will give them a call tomorrow to see if we can get any information from them as at the moment we are trying to find the correct oil filter for the engine a the original one the lf4034 has been discontinued and so have any replacement filters we have found so far we are grateful for your suggestion and will let you know how we go

cheers scott & lynette
Title: Re: Searching for information on a Ud42 Marine engine
Post by: cobbadog on 19 May, 2021, 09:40:40 pm
Ok, Hi Scott.
With filters I go to a company an hour up the highway called Redpoint. They sell oils, filters battteries and so on. With some of the odd ball stuff we have I send them the details of what I have and the relevant sizes. So acurately measure the OD x ID x length and that can be a good cross reference for a supplier. With details like that usually most filkters can be sourced. Even Repco should be able to help you out or Google Ryco filters and you should find a bloody long chart of all sorts of filters with part # and then hopefully sizes and if no joy send an email to any filter company you can think of with the details that you have on the engine and the physical sizes.
Not sure if you need a spin on cartridge filter or not but if it is a spin on  then identify the size and pitch of thethread and most likely a metric thread being UD but stranger things can happen.
In this hobby of restoring and resurrecting old toys you often have to think outside the square. I wanted some front wheel bearings for our Cropmaster tractor and I knew these were rare on a good day. Local bearing supplier in Taree looked at them, then swore like I do, and said David Brown tractor. Yep it is, so he took the measurements and plonked a different set of wheel berings on the counter and not much dearer than a set of Holden ones.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: oldgoat on 19 May, 2021, 10:36:47 pm
I think if you are looking for parts try looking for UD43 parts which was the truck version of their 4 cyl  2stroke diesel. Maybe that will be more familiar to the parts man. Filters are still available because we bought one for our UD6 but I have been unable to find the invoice for it which had the filter no. on it.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: rustyengines on 20 May, 2021, 04:47:41 pm
It does not have to be the same filter
Was helping a chap a while back with an old car, no way was there a filter for it went in circles for months only to find he could buy one from Supercheap BUT it was 40mm longer than the original which made no difference to where fitted, had the room and the extra length made no difference to how it works
Ian
Title: Re: Searching for information on a Ud42 Marine engine
Post by: sak84 on 20 May, 2021, 08:03:50 pm
Hi all its scott
 We are going out to the boat on the weekend to attempt to change the filters we have and while we are there we will remove the oil filter and get all the measurements and will give the local filter shop in caboolture a call to see if they can find anything that will work to replace ours.

The motor has been sat for about 7 years now so i am hoping that if  we change all the filters and oil that it is going to play ball and fire up .
Is there anything else that anyone can think of that we should look at before we try to start her up for the first time after all these years

We will also be replacing the waterpump.

This is our first deisel inboard (first inboard ever lol)
So absolute beginner's on this only ever had outboards.
Thankyou for all the help in advance
Cheers
Title: Re: Searching for information on a Ud42 Marine engine
Post by: cobbadog on 20 May, 2021, 09:38:56 pm
Clean out the fuel tank and drain amd remove all old fuel. Once that is done with nice clean fuel you can then bleed any and all old fuel completley out of the fuel system, pump and lines.
Do your best to check the cooling system to see if any corrosion has made holes where you dont want them.
Have a very good battery with you and a possible back up spare or a jump start pack.
Just in case a fir extinguisher.
Plenty of coffee and abeer for when it fires up.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: cobbadog on 20 May, 2021, 09:42:21 pm
Forgot to say that if it does start up don't rev it too hard especially if it has not been run for a while the rings might have frozen and will need a little time to free up. If compression is down try a squirt of oil down the injector holes to help raise the compression. Avoid the start ya bastard if possible but it just might be what it needs just be carefull how much you use.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: oldgoat on 21 May, 2021, 07:54:39 pm
Take the side cover off the injection pump and check that the rack is free to move. It will start on full fuel so make sure you can jam something in the intake in case it runs away.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: oldgoat on 21 May, 2021, 08:06:09 pm
Just found the repair manual for your diesel so if you get stuck I can probably find the answer.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: winnock on 21 May, 2021, 08:28:33 pm
UD diesel engines were imported and supported by Macquarie Industries in Victoria for many years. They may no longer be in business but the following shows up in a Google search. https://udenginerebuildspecifications.com.au/ud-diesel-engines
Hugh
 
Title: Re: Searching for information on a Ud42 Marine engine
Post by: Netey on 22 May, 2021, 07:40:15 am
Thank you all very much for your replies. we are heading to the boat this morning so all this information is awesome. I went and got fire extinguisher yesterday before work. We do have start ya bastard and free ya bastard spray with us and thank you for the advice on only a small amount. (we made that mistake with our Ute last year). Would anyone happen to know the amount of oil the engine takes?

We found a repair manual on Board the boat for a UD6 but it does not have any basic information  just how to rebuild the engine as such, but again without knowing information on the motor I can't tell if it is the same for our UD42.

Thank you for the information on the import company also, I have been doing a lot of researching on this motor since we got it with not very much, I have even reached out to the Australian maritime museums in hope someone could help us, we are very thankful for all of the advice and suggestion.

We will Update you all once we get out there and try the already mentioned suggestions.
Lynette & Scott.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: cobbadog on 22 May, 2021, 09:19:13 pm
oldgoat may be able to look that up for you as to the quantity although by now you possibly have changed the oil. Look forward to hearing how you got on.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: oldgoat on 22 May, 2021, 09:55:36 pm
That is about the only thing that is not in the book. It covers everything else including a section with pictures of the special tools required.   
I guess you fill it to the full mark on the dipstick and check to see if you have oil pressure.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: sak84 on 22 May, 2021, 10:20:10 pm
Well good news we got her running no thanks to a seized throttle cable but after changing the deisel filter and priming her back up she fired straight uponly ran it at low revs and for a short time as did not find the correct oil filter so just tried with filter and oil that was in it but after checking all the lines and finding minimal signs of corrosion anywhere figured it was worth a try and after about a minute of cranking away she went.
It may seem like a strange question but would anyone know where the air intake would be as i could not for the life of me find where it was or find a air filter for it.
We are so thankfull for everyones help so far as we where running blind on this one.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: cobbadog on 23 May, 2021, 04:20:05 pm
That would be right old goat, everything you need to know except some simple facts like quantities.   ::)
Title: Re: Searching for information on a Ud42 Marine engine
Post by: asw120 on 23 May, 2021, 05:42:38 pm
I assume it has a blower, like a GM? Find that and follow the pipes.

Jarrod.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: cobbadog on 23 May, 2021, 08:57:03 pm
Follow your air intake manifold. If no air filter is found that maybe because it is a marine application where dust would be rare. Or it has been removed at some point but one can be adapted.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: oldgoat on 23 May, 2021, 09:38:05 pm
The air filter originally bolted on the square inlet on top of the blower left hand side looking from the flywheel. It had a paper element and an intake silencer on the front of it.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: sak84 on 24 May, 2021, 10:24:28 pm
Hi all
Thank you for the suggestions i will check when i get out there Saturday and let you know how we go.
I  would just like to check
When you say blower do you mean the fans they use to suck out the fumes out of the room or does a deisel motor have another type of blower i dont know about
Cheers
Title: Re: Searching for information on a Ud42 Marine engine
Post by: oldgoat on 24 May, 2021, 10:36:17 pm
It has a supercharger (Blower) on the left side of the block looking from the flywheel end which blows air into ports at the bottom of the cylinder. This is then exhausted through poppet valves at the top of the cylinder after the power stroke.                                                 
 If you like I would be prepared to swap the UD 6 book you have for the 3 and 4 cylinder one I have.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: Netey on 27 May, 2021, 08:39:19 am
Oldgoat our book is falling apart it isn't in the greatest condition, but I am happy to try and scan the pages and send you a copy if you like? And thank you for the advice on the blower Scott is going out on the weekend to do more work on it so its on his list to check it out, I am sure he will have plenty more questions. I found the filter and oil at our local truck hub so he can also do the oil change now still no wiser on the amount of oil we need so I guess that will just be a fill and check as he goes. I also found a lovely gentleman at cablecraft who unseized our throttle cable for us. so far everything is going in the right direction. :)
Enjoy your day
Lynette & Scott.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: Netey on 03 December, 2022, 04:48:52 pm
hi all

thankyou to all your suggestions it has been some time but the boat and motor has been completed and is now back in the water the only hassle we have is that the starter motor got some salt water in it in the floods when the boat went under on hardstand may i add lol
i was wondering if oldgoat or anyone else would have the part number or any details on the starter motor so i can get another one as i think this one may be stuffed as it is not working correct and squirting out water from the breather any help would be great

thank you scott/lynette
Title: Re: Searching for information on a Ud42 Marine engine
Post by: cobbadog on 03 December, 2022, 09:26:47 pm
Mate it would be a rare day that a wet starter motor has to be thrown away. Strip it and clean it up, shout it a set of new carbon brushes as they are dirt cheap then assemble and bolt it up. Make sure the bearings are in good shape and lubricated or replace them, again nanother cheap part.
Having said that I noticed that someone either on Fleabay or FaceAche advertised aftermarket starters for Listers. In this case it was for a SR1 but they do make them for multi cylinder Listers. A Google search or search on Fleabay should get results. You will need to mention if yours is clockwise or anticlockwise direction.
Glad your back on the water and not under it.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: oldgoat on 04 December, 2022, 12:26:59 am
According to the book your diesel uses a Hitachi s25-24 starter The trouble will probably be in the relay on the starter this throws the pinion into mesh and is the main contactor for the starter. It looks as if you can remove the plunger from the solenoid and a cleanup and lubrication might be all that is needed plus all the stuff that cobbadog said.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: oldgoat on 04 December, 2022, 12:56:29 am
Also found the sump holds 10 litres you just have to know where to look in the manual. Length of brushes 24mm wear limit 16mm. Looks like you can dismantle the solenoid and dress up the contacts there should be  0.2 to1.5 mm clearance between the pinion and the front bush when the solenoid is operated Oil pressure at 1200 rpm with the oil hot should be about 45psi. Check the injection pump oil occasionally with the dipstick.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: Netey on 20 December, 2022, 08:45:25 pm
hi cobbadog and oldgoat

thank you for all the info i pulled ours apart and it was full of sludge i tried cleaning it and it worked the first try but unfortunately failed the following weekend again you turn the key and it slow turns and stops then smells like electrical burning.
 so trying to find a replacement before Christmas but is not looking good as no one seems to be able to match it and i have tried looking up the hitachi s25-24 but have had no luck in finding one as yet appriate all your help with everything

cheers scott
Title: Re: Searching for information on a Ud42 Marine engine
Post by: cobbadog on 20 December, 2022, 09:30:52 pm
The starter might be worth still playing until ou get a replacement. If it is stuffed then it is stuffed but the smell of an electrical fault can be as simple as a loose wire when power is being drawn through it or a bare wire in the system.
Not sure what toys you have access to but pull it apart again and clean it up to be as new inside and out. This allows you to see clearly any faults. If you have a lathe do a light skim across the communtator to clean them up and I mean a light skim. Check bearinga front and rear or if bronze bushes a couple of drops of oil.  Check the brushes and replace if they are past the wear size as indicated earlier, new are 24mm worn out at 16mm. Double check the leads from the brushes are tight and not arcing out somewhere and the spring tension holds the brushes against the communtator.
The solenoid as stated earlier in aprevious post must also have clean flat contacts that meet evenly against one another and then their is an adjustment for a clearance between pinion and front bush of 0.2mm - 1.5mm. Worth a tryand all it will cost is a bit of time.
I know you mentioned you have oil b ut it is far cheaper to buy a 20ltr drum than smaller size containers to make up the 10 ltrs needed.
Title: Re: Searching for information on a Ud42 Marine engine
Post by: Netey on 20 December, 2022, 10:59:14 pm
I will pull it apart again tomorrow give it another clean out and see how i go and check the connections and wires inside i did not think to check them thank you i will admit that i have not tried cleaning a starter before this is all a first for me   
Title: Re: Searching for information on a Ud42 Marine engine
Post by: cobbadog on 21 December, 2022, 09:05:52 pm
Not as hard as you might think. Take lots of photos as you take it apart so it  goes back exactly the same way. If you cannot skim the communtator at least use some emery cloth to polish it up. Were the brushes within limits and was the pinion adjusted correctly?
Title: Re: Searching for information on a Ud42 Marine engine
Post by: cobbadog on 21 December, 2022, 09:07:23 pm
Also you can bench test it before fitting but make sure it is held down on the bech very well and then hit it up with the jumper cables.