[UGE]

Dear all,

I bought an OM352 engine, which had been earlier installed on a boat. Due to the external corrosion, the aluminum tag with the engine type and number is missing. Only thing visible in the engine, is the part number/casting numbers in the different parts. Judging from the shape of the oil pan, the engine is not from unimog. (in my unimogs the oil pan looks different)

I would need help,tips and advice to identify, which flywheel would fit the engine, so that I could run the starter to start the engine. Or if alternatively, there is a way to identify the engine model and type, so that it would be possible to get a right flywheel.

Visible numbers for the following parts in the engine are:

Engineblock: 352 011 09 01
Cylinder head: 352 016 06 01
Oilpump/filterfoot: 000 184 22 08
Injectionpump: Bosch PES6 A80 C 410 RS 2085 (702-67295)
Oil pan: (I could not find the part number)
Bellhousing: 322 251 05 01

I have done some research and it seems that there are several different flywheel diameters for OM352, such as 330mm, 360mm, 375mm, 380mm, etc.. There seems to be alternatives also, what is the flange diameter and number of bolts for the connnection between flywheel and crankshaft.

The startmotor is attached to the bellhousing. The radius between the starter motor shaft and center of the flywheel, multiplied two is the relatively accurate diameter of the flywheel. When I measure the radius, I only get approxim ate distance. However, as there are several flywheels in the "more-or-less" right diameter, I am not 100% sure.

If I could find information, which engine/vehicle the bellhousing with number 322 251 05 01 has been used, it would already take me further solving the problem. I have tried google, parts search, epc, but no luck.

if anyone have any ideas, tips or information to solve the problem, Im very grateful!

 

[TREBOR110]

The engine number may be stamped on the block, rear of the injector pump just bellow the cylinder head (it is on all my OM352A)

Rob

 

[tmodler]

The number of bolts matches the Crank. You need to pull the bell housing, if you have not.

If you cant find an engine number, cut out cardboard in the suspected size (diameter) and test fit them. With at least 1.5cm differences in diameter, only one will work with the starter motor.

Or, with the bellhousing removed, bolt up the starter and measure.

C.

 

[UGE]

Good evening,

Thank you Rob and tmodler.

I checked the engine block, but unfortunately there was no number. I found the spot and surface, which would be suitable, but surface was blank under paint.

Bellhousing is in place. I will need to take very exact measurement of the radius from center of flywheel to the middle of the bendix gear tooth. Engine is on a stand, so access is easy.

What makes the choise of the flywheel difficult, is the fact that depending the online-dealer, the same part number will return sometimes different diameter. So it is difficult to know how the diameter is measured; from the flywheel clutch friction area diameter or absolute maximum, i.e. tip of the start motor ring tooth. And to make it even more complex, some illustrative pictures show that ring radius is approx 10-15mm longer than what radius would be for flywheel itself.

Search continues...

 

[tmodler]

I think all the UNIMOG flywheels follow the DIN standard and maybe that they match up to an SAE#2 bellousing (starter location). At least thats what I found when I was looking at engine options for an SBU. I cant say that the 416 is the same, but there my be a reference you can use that is similar to narrow down the options.

Is there a breaker year you can go to nearby?

C.

 

[tmodler]

Sorry, should have clarified: I assume you are putting this is the 416 and that you have the 416 bell housing. If so, you can maybe just use the P/N from the EPC for your vin?

C.

 

[UGE]

Hi tmodler,

This is an extra engine I have and I have no particular vehicle right now where I would need to install it. However, I would like to make sure that engine starts and runs well, so I could use it for something if need be. Or if need be, I could renovate the engine as I dont know what condition it is.

I have done further research and flywheel from febi, model 17168 could be the right flywheel type. The absolute maximum diameter of the flywheel, from tip of the starter ring to another is 360mm. I contacted febi customer service asking if they could send technical drawings of the flywheel, so that I can confirm that flywheel would fit in all aspects, not only max diameter. So we'll see what they answer.

The flywheel costs few hundred euros, so I would like to be sure that it fits before ordering one.

Unfortunately I dont have any breaker-yeard for trucks nearby, where I could go.

I havent gotten any answer from official Mercedes dealer regarding the question of the bellhousing part number. I think that bellhousing comes from light mercedes truck 1117 or similar size with OM352.

The bellhousing I have attached in the mystery engine and the bellhousing in my two 416 look different. both 416 have identical bellhousing but mystery engine has larger and wider bellhousing. I suspect that larger bellhousing is needed to accommodate larger pressure plate and clutch.

 

[tmodler]

Maybe contact a UNIMOG dealer and orders the flywheel and bell housing you need for the 416. Likely a better investment than buying parts for the thing you dont want to use as is.

Just my .02.

C.

 

[UGE]

Update on the case.

The search has narroved down two options:

Option 1: A352 030 27 05 (up to engine 708449 year of manufacture 1982)
Option 2: A352 030 39 05 (from engine 708450 year of manufacture 1982-1990)


Option 1 is expensive to buy (Lowest price I found was around 1400 EUR) and part is hard to find online.
Option 2 is cheap to buy and widely available, like febi 17170, around 150 EUR

Does anyone know if the option 1 and 2 are interchangeable? what is the difference between option 1 and 2? Are the measurements different?

 

[tmodler]

Buy the 39 05 from somewhere you can return it and see?

C.

 

[UGE]

I guess thats what I ultimately have to do. In this country, the suppliers generally speaking do not offer very flexible terms. Spare parts are usually sealed in plastic and if the seal is broken, the product can not be refunded. And if I would be able to return the item, I have to pay the shipping, which for the 20kg item is hefty.

I try to look for ebay for supplier with flexible terms. Or if anyone has proposals for suppliers with flexible terms, Im happy to receive the ideas.

I have shoestringbudget for this project, so thats the reason why I need to find economical option for the flywheel.