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Old 01-20-2019, 08:01 PM   #1
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Allison 2500 filter change on Berk 38A?

Have heard its required to change transmission filter at 6000 miles but can't find verification in Op Manual or Op Manual schedules. The prognostics thing is gibberish to me. Is prognostics enabled on FR/Freightliner?
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Old 01-20-2019, 08:24 PM   #2
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I do not believe prognostics is enabled on our units.

It's in your transmission manual. (Download from WEB if your coach did not come with one....)

https://www.rvtechlibrary.com/transm..._operators.pdf

You have the 2500MH

Best I can tell there are TWO filters on ours. One is the internal main filter.... It is NOT replaced unless the tranny is rebuilt. (Page 56)

Then the book mentions the Auxiliary Lube, which appears to be optional, and not installed on ours.... There's what appears to be a decent discussion on that here:

http://www.irv2.com/forums/f125/lube...ere-60021.html

Here's an official Allison pub, and although it also LISTS the auxiliary lube filter (interval but not part #) for the 1000/2500 it doesn't talk any further about it there, but it DOES show it's location for the 3000/4000 series.

http://beamalarm.com/foretravel-link...e-sa5429EN.pdf

The other (the one you're talking about) is the external control filter. First at 5000 then every 50K/24months

https://dragonship.blog/external-tra...ontrol-filter/
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Old 01-21-2019, 05:07 PM   #3
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Yup, there it was, right there on page 56. ".initial filter change... during the first 8000 (5000 miles)" Thanks Oscar.
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Old 01-21-2019, 06:17 PM   #4
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My pleasure..... Yeah, that ones hiding. I knew about it from Camp Freightliner.
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Old 01-23-2019, 01:06 PM   #5
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Originally Posted by planopat View Post
Yup, there it was, right there on page 56. "….initial filter change... during the first 8000 (5000 miles)…" Thanks Oscar.
You have to drop the pan to change the Internal Filter. If it were me Id also change the fluid since yo have to drain it to drop the pan, or at lease replace the fluid I drained out with fresh fluid.

Id also change the Spin On filter as well.

Fluid/Filters are cheap, transmissions............ not so much.
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Old 01-23-2019, 01:13 PM   #6
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You have to drop the pan to change the Internal Filter. If it were me Id also change the fluid since yo have to drain it to drop the pan, or at lease replace the fluid I drained out with fresh fluid.

Id also change the Spin On filter as well.

Fluid/Filters are cheap, transmissions............ not so much.
BAD INFO ALERT.

What model BERK do YOU have?

There is on this model (Allison 2500) ONE internal filter and it is not changed unless rebuild.

There is ONE external filter, the one we're talking about and it is replaced once at 5000 and then with every fluid change 50K/24 months.
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Old 01-23-2019, 02:14 PM   #7
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[QUOTE=Oscarvan;2010810]BAD INFO ALERT.

Quote:
What model BERK do YOU have?
I have an Allison 1000, but their maintenance is very similar. I guess that unless you own the Precise Same RV or vehicle nobody should attempt to be helpful, is that your point

Quote:
There is on this model (Allison 2500) ONE internal filter and it is not changed unless rebuild.
That was old Allison info, as far as the 1000 went. Now they recommend to change the internal filter with every fluid change. This happened went they went from a simple screen to an actual filter. Small additional expense actually, but a bit of a PITA to have to drop the pan instead of using the drain valve only.

Quote:
There is ONE external filter, the one we're talking about and it is replaced once at 5000 and then with every fluid change 50K/24 months.
The reply I posted two stated his internal filter needed to be changed. This CANNOT be done unless you drain the pan and drop it. It seemed to be excessive to me to do so this early. Your referencing the external filter makes much more sense.

ALL that said.............Kindly take your sarcasm and wit elsewhere, it is neither wanted nor appreciated.
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Old 01-23-2019, 02:53 PM   #8
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Turns out that Oscar's info is 100% correct for the 2500 in a Berk. Don't know about the 1000. No need to be snarky. Peace.
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Old 01-23-2019, 04:27 PM   #9
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Turns out that Oscar's info is 100% correct for the 2500 in a Berk. Don't know about the 1000. No need to be snarky. Peace.
I agree just giving back what was given, in a nice manner
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Old 01-24-2019, 01:17 AM   #10
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[QUOTE=DouglasReid;2010871]
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Originally Posted by Oscarvan View Post
BAD INFO ALERT.

I have an Allison 1000, but their maintenance is very similar. I guess that unless you own the Precise Same RV or vehicle nobody should attempt to be helpful, is that your point
No they are not very similar. There are considerable differences in operation and maintenance. This is a brand specific page where people try to get information on various model Berkshires. The operation, maintenance and improvement of. And we have our hands full trying to keep it straight. People walking in and telling us non-specifically how to do things because that's what they do on their XYZ is not helpful at best, and potentially harmful at worst. And it doesn't matter wether you have a Prevost or a Popup. No sarcasm or wit in there.

That said, this caught my eye: "This happened went they went from a simple screen to an actual filter." So to make 1000% sure that we have our stuff straight I'll see if I can get someone at Allison on the horn to ask if they didn't do something similar to the 2500MH. (See, it's not just a 2500, it's a 2500MH) especially since the book is somewhat ambiguous.

I will report back. At the end of the day its' about what's right, not who's right.
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