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2.5di banana aux-belt noise.

Transit Mk3, 4 & 5(smiley front) Forum. All Transits 1986 - 2000

2.5di banana aux-belt noise.

Postby maartenh » Mon Jul 29, 2019 12:29 pm

Greetings from the Netherlands!

First, thanks for all the information already posted on the forum, it helped me a lot already to keep my smiley face 2.5 di motorhome up and running!

But i have noise from the engine bay which i don't know how to solve, so it was time to finally create an account and post something.
During a holiday trip in Italy, i heard anothe smiley face with the same noise.

Here is a video: https://www.youtube.com/watch?v=dpaVaes ... e=youtu.be
( is the video link working? )
what is already done:
Removed the aux-belt: no noise at all.
high-idle: no noise. (only normal engine noise :wink: )
Alternator rebuild (new bearings), and new vacuum pump: no change, still a lot of "rattle and rumble" . (could it be the wrong combination of vacuum pomp and alternator?)
Visco: No play at all, feels as new.

Visco-pulley-hub on the oil-pump-cover: bearing is not silent, needs replacement in the long term, but not "critical" yet. But could this make such a noise?

Is anyone familiar with changing the visco-hub-pulley-bearing? I think this is the part, but i can't find a how-to or information in the haynes:https://www.ebay.nl/itm/323261355963
Do i need to remove the timing belt, oil pump cover and use a press to replace the bearing?

Thanks!
maartenh
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Re: 2.5di banana aux-belt noise.

Postby blizard » Mon Jul 29, 2019 3:58 pm

Hi Maarten,

Welcome.
Hard to say where the rattling noise comes from, looks indeed a bearing, the wheen needs to stay, because it is part of the belt cyclus
I cut the Visco off and put an electric fan on. There was a hack about that at motomobil.com, but cannot find anymore
Transit MK3 1987
Chausson Motorhome
Engine 2.5TD of 2000 (last production year of the DI, I'm told)
Gearbox MT75
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Re: 2.5di banana aux-belt noise.

Postby maartenh » Mon Jul 29, 2019 6:02 pm

It is not the bearing of the visco, but the pulley the visco is mounted on. I can't find how to replace it.

What is a "wheen"?
maartenh
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Re: 2.5di banana aux-belt noise.

Postby V184 » Mon Jul 29, 2019 9:41 pm

maartenh wrote:It is not the bearing of the visco, but the pulley the visco is mounted on. I can't find how to replace it.

What is a "wheen"?


i think you will have to change the cover that incorporates the pulley, does it still make the noise if you dip the clutch ?
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Re: 2.5di banana aux-belt noise.

Postby maartenh » Tue Jul 30, 2019 10:51 am

Yes, it is not the clutch.

The oil pump cover is a 500 euro part :|
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Re: 2.5di banana aux-belt noise.

Postby maartenh » Wed Aug 07, 2019 2:50 pm

Both the alternator (rotor is loose on the main shaft?!) and the visco-auxbelt-pulley-bearing are making noise.

https://www.youtube.com/watch?v=HRJ_2Qi ... e=youtu.be

Ordered the parts, time to bring out the tools!
I am going to try to press a new bearing in the oil-pump-cover.
maartenh
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Re: 2.5di banana aux-belt noise.

Postby maartenh » Sat Aug 10, 2019 5:55 pm

Started today, now waiting for parts.

Bearing was easy to remove with a shop-press.


Image
Image
Image
maartenh
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Re: 2.5di banana aux-belt noise.

Postby blizard » Sat Aug 10, 2019 6:42 pm

Nice job!
I will go the same route, the plate behind that all has a tear jest behind the waterpump.
I am waiting for the plate from Ireland
Transit MK3 1987
Chausson Motorhome
Engine 2.5TD of 2000 (last production year of the DI, I'm told)
Gearbox MT75
blizard
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Posts: 133
Joined: Fri Apr 25, 2014 6:36 pm
Location: Groningen Netherlands

Re: 2.5di banana aux-belt noise.

Postby hetman » Thu Sep 12, 2019 7:36 am

THank you for posting the pictures and videos, Maarten.
Mike
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Re: 2.5di banana aux-belt noise.

Postby Wipeout » Wed Oct 26, 2022 10:33 am

maartenh wrote:Started today, now waiting for parts.

Bearing was easy to remove with a shop-press.


Thanks a lot Marten for sharing this pics..

Im having a similar problem but with the viscus fan flange, tis broken and I want to change for a new one...

Was the crankshaft pulley difficult to take out?? Did you change the crankshaft front seal before remounting ?

Thanks a lot for your answers !!
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