Replacement interval for Donaldson filter elements

[cummo]

Just wondering what the consensus is with regard to replacing the primary and safety elements within the Perentie air filter housing (the Donaldson unit); wait till till the impedence indicator shows in the fitted Servi-Signal unit, or replace at set intervals e.g. 20k kms?
I've purchased a replacement primary and safety element (Fleetguard) to have on hand with the intent to replace the existing elements at some point in time. After removal I plan to try and have the existing units chemically cleaned by a local filter service firm to have as future replacements/spares.
Be interested to hear what others do; I had concerns (probably unfounded) that the Servi-Signal may be faulty and I'd never know.

Cheers, Dave

[TK_Co]

I believe it's a personal thing.
If you look at the EMEI it says to "clean" every 10,000 or 24 months.
Some filter experts say an air cleaner is most efficient at 80% plugged (blocked) so your better off going by the air filter restriction gauge.
Other people may clean it every day or every second day when working in very dusty conditions.
It really does depend on the environment your working in.
I personally would do it every 20k kms or earlier on condition.
Hope this helps

P.S. I know it's been posted on here before but I can't find it, does anyone have the filter cross Reference chart for the 4x4 and 6x6's filters for Donaldson ?

Thanks in advance,

Tristan H


Just catching the perentie bug.

1990 Perentie 6x6 Air Defence GS ARM 51867
1996 6X6 Infantry Carrier Hard Top ARN 202238
1991 4X4 Regional Force Surveillance Soft Top (RFSV) ARN51673

[cummo]

I pulled the air filter housing out the other night and removed the existing primary and safety elements (both Donaldson units). They were installed in late August 2011 based on the date scribbled in permanent marker on each. I was very surprised at what good condition both were in; certainly far cleaner than I would have expected for 4 years in service. Maybe Towsville-based vehicles didn't hit the dirt too much.
I installed a new primary and safety element (both Fleetguard units) in order to benchmark them, and reset the Servi-signal indicator.
I will hopefully get the Donaldson units chemically cleaned for use a spares/ next time replacement.
Cheers, Dave

[Bearman]

I believe it's a personal thing.
If you look at the EMEI it says to "clean" every 10,000 or 24 months.
Some filter experts say an air cleaner is most efficient at 80% plugged (blocked) so your better off going by the air filter restriction gauge.
Other people may clean it every day or every second day when working in very dusty conditions.
It really does depend on the environment your working in.
I personally would do it every 20k kms or earlier on condition.
Hope this helps

P.S. I know it's been posted on here before but I can't find it, does anyone have the filter cross Reference chart for the 4x4 and 6x6's filters for Donaldson ?

Thanks in advance,

Tristan H


Just catching the perentie bug.

1990 Perentie 6x6 Air Defence GS ARM 51867
1996 6X6 Infantry Carrier Hard Top ARN 202238
1991 4X4 Regional Force Surveillance Soft Top (RFSV) ARN51673




Tristan, Both 4x4 and 6x6 share the same secondary or safety element, but have different numbers for the primary one. Its actually the same filter with the plastic cyclone fin setup on the opposite end of the filter. I will post up the Donaldson part numbers on Saturday when I get back home.

[TK_Co]

Thanks Brian,
And I've found that the turbo and non turbo engines have different engine oil filters too which surprised me. I thought I was going to get away with carrying the same filters in the shed for all 3 vehicles.


Just catching the perentie bug.

1990 Perentie 6x6 Air Defence GS ARM 51867
1996 6X6 Infantry Carrier Hard Top ARN 202238
1991 4X4 Regional Force Surveillance Soft Top (RFSV) ARN51673

[Judo]

While we're on the topic, which Servi-signal indicator should I be using? Mine doesn't have one at all...

[Bearman]

Thanks Brian,
And I've found that the turbo and non turbo engines have different engine oil filters too which surprised me. I thought I was going to get away with carrying the same filters in the shed for all 3 vehicles.


Just catching the perentie bug.

1990 Perentie 6x6 Air Defence GS ARM 51867
1996 6X6 Infantry Carrier Hard Top ARN 202238
1991 4X4 Regional Force Surveillance Soft Top (RFSV) ARN51673

Yes, that's true. Yet a lot of the na truck engines had the setup same as the 6by.

[Bearman]

While we're on the topic, which Servi-signal indicator should I be using? Mine doesn't have one at all...

Hopefully someone will post up the Donaldson part number. I am away from home atm so don't have access to my manuals.

[TK_Co]

Hopefully someone will post up the Donaldson part number. I am away from home atm so don't have access to my manuals.

Hope your not working too hard Brian !! 😄


Just catching the perentie bug.

1990 Perentie 6x6 Air Defence GS ARM 51867
1996 6X6 Infantry Carrier Hard Top ARN 202238
1991 4X4 Regional Force Surveillance Soft Top (RFSV) ARN51673

[flagg]

While we're on the topic, which Servi-signal indicator should I be using? Mine doesn't have one at all...

I trip my 20" at any load, SteveG trips his 25" if he has his snorkel fitted.. I'm not sure if 30" is too much??

But here is where you can get them:

Accessories - Restriction Gauges - www.westernfilters.net (http://www.westernfilters.net.au/restriction-gauges/)

[rathgar]

....Some filter experts say an air cleaner is most efficient at 80% plugged (blocked) so......

Hi Tristan,

I had never heard this before do you have any more details or links to studies?

Thanks

[rick130]

Hi Tristan,

I had never heard this before do you have any more details or links to studies?

Thanks

Have a read through this thread. http://www.aulro.com/afvb/technical-chatter/50650-air-filter-tests-finally.html

Actually, everyone needs to read what Ben/isuzurover says regarding air filtration in this thread.

[rathgar]

Have a read through this thread. http://www.aulro.com/afvb/technical-chatter/50650-air-filter-tests-finally.html

Actually, everyone needs to read what Ben/isuzurover says regarding air filtration in this thread.

Thanks.

I had a skim through the 8 pages and there is lot of good information re filters (i think I have read it before).

The data in the graphs shows clearly that the K & N filters work better (at filtering dust) when partly clogged. But given that it also shows they aren't up to the job of actually filtering anyway, why bother using one. I haven't, and would never, use them where removing dust from the air was what you were after from an air filter.

The data (that I saw) doesn't show back to back tests of the same brand and model of other types (brands) of filters with regards to an improvement in filtering efficiency as they become clogged. It may be true but not shown in that data.

If it is true that as an air filter becomes clogged it is able to remove finer particles. This has to compared to the loss of airflow to the engine as it becomes clogged which I think the data shows (but there also seems to variables in the model of filters being compared).

[rick130]

Read what Ben says, he explains how an air filter works and how as it loads it increases efficiency (and I think it's somewhere in there how a fuel filter works differently !)

He's a filtration engineer, he designs and lectures on filtration systems and has worked on research for the big three, Mann-Hummel, Donaldson and Cummins/Fleetguard.

Of course it's always a trade-off between flow and efficiency, which is why pressure differential indicators were invented !

[rathgar]

Yes I read what he said I am just pointing out that there is a lot of comment in that discussion based a a couple of graphs that don't document the whole equation.
If you stop and think about the extreme, a 100% blocked filter, then off course there wont be dust particles getting through but that's because there is know airflow to carry them.

Regularly clean and or replace your filters - don't operate them at a base level of being 80% clogged. That is crazy.

[rick130]

Regularly clean and or replace your filters - don't operate them at a base level of being 80% clogged. That is crazy.

The point is that people clean or replace far too frequently, and cleaning has the downside of potentially damaging the media.

I can't be bothered looking, there's data somewhere, and IIRC that Donaldson element I supplied for that test had at least 20,000km of use on it already.
At the time I lived well out in the bush and travelled majority dirt roads everyday. The filter still had plenty of life in it, it was no where near its service life in terms of pressure drop.

[Bearman]

OK, here's the Donaldson (not land rover) part numbers for the air filter elements and service indicator for both 4x4 and 6x6.

4X4
inner.........P90-0434
outer.........P90-0433
Service indicator...RBX00-2252

6X6
inner........P90-0434
outer........P90-0611
Service indicator....RBX00-2251

[Judo]

OK, here's the Donaldson (not land rover) part numbers for the air filter elements and service indicator for both 4x4 and 6x6.

4X4
inner.........P90-0434
outer.........P90-0433
Service indicator...RBX00-2252

inner........P90-0434
outer........P90-0611
Service indicator....RBX00-2251

Assuming the second half of the post is for 6x6...

From those part numbers the 4x4 service indicator is a 25" and the 6x6 (with turbo) a 20". Seems around the wrong way? :confused:

How do you find your service indicator with a turbo?

[Bearman]

Assuming the second half of the post is for 6x6...

From those part numbers the 4x4 service indicator is a 25" and the 6x6 (with turbo) a 20". Seems around the wrong way? :confused:

How do you find your service indicator with a turbo?

Sorry Justin, yeah 6X6, have fixed it up. Those numbers are out of the army rps for both vehicles. Haven't tripped the indicator in either of mine yet even with an aftermarket turbo with 20psi boost on the 110 4x4.