Eber - D3LC - Blower Motor

[Schuss39]

Sorry folks this is another Eber thread ........ on the Blower Motor part of the system.

I have been fault finding on a D3LC, model type 25 1822 01, 12 volt, built back in 1994.

The Blower Motor had started wirling and clanking over the last few days and heat output reduced before stopping. It is now stripped down!

It appears that the bearings in the Blower Motor may have gone as the spindle is very hard to rotate. When it should rotate freely.

Does anyone have any experience of stripping these blower motors down?
Replacing the bearings and where to get them from?
Are there any other replacable parts on these dc motors which I need to look at as well?

Or is just bite the bullet and replace it?


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I have already removed the plastic fan assemblies from both ends of the spindle - thats the easy bit.

It is nothing to do with the glow plug or screen, diesel fuel supply or pump or on the burner side of the system. It had a decoke and new service parts fitted back in late September and has worked fine since then until a couple of days ago. Just the blower motor spindle is hard to turn.
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Thanks

 

[pvb]

Does anyone have any experience of stripping these blower motors down?
Replacing the bearings and where to get them from?
Are there any other replacable parts on these dc motors which I need to look at as well?

No experience of doing this, but Eberspachers generally are fairly easy to take apart. The bearings will be standard size, available from ordinary bearing suppliers. You could check the brushes.

 

[VicMallows]

I rebuilt the (seized) motor of my 1985 DIL quite a few years ago. Getting it apart was not easy and involved some very careful drilling with a pillar drill. Once apart, the cause of the problem turned out to be a corroded mild-steel circlip which had broken loose from the shaft. Its only purpose appeared to be to accurately position one of the two pressed-on bearings. (I suspect it should have been removed during manufacture.....or should have been s/s).

Since it was apart, I replaced both bearings anyway (standard size from any bearing supplier) and it has works fine ever since.

So repair IS possible

 

[David2452]

It appears that the bearings in the Blower Motor may have gone as the spindle is very hard to rotate. When it should rotate freely.

May have gone? the thing is nearly twenty years old, replace the the air motor and work out the amortised cost, which will seem a lot but as an eighteen year investemenmt is not. The bearings in all these heaters are standard and available if you really want to but why? It is important that on an air motor replacement that the CO2 (burn efficiency) is checked and adjusted by a dealer equipped to do so BTW.

 

[Schuss39]

Thanks for the replies and information. Will give it a go and see how far I get with going down the bearing replacement route.

If that fails then it looks like a new blower assembly as the easy option. Although my technical training gives more satisfaction in fault finding down to the component level than just changing the box.

Point taken about the safety checks.

 

[David2452]

Although my technical training gives more satisfaction in fault finding down to the component level than just changing the box.

I might go that route to if it were my own unit but it would cost more in my time than a new one for a customer if I did, also the new motor carries at least some kind of warranty. You may as well have a go, what's to loose, it's already shot. Not sure on yours but some units use shims in the air motor to regulate the burn rate so you may want to look out for those.