Caterpillar Water Separator - The Full Story

[gxl_d4d Advanced Member Find all posts View Profile Close gxl_d4d]

Not sure. The standard cat filter that comes with the kit is 3.9 inches.

One way to shorten the assembly is to remove the bowl and replace it with just a drain plug. This will reduce the water holding capacity so the housing will need to be drained more often and checked more often as there'll be no visual indication.

[gxl_d4d Advanced Member Find all posts View Profile Close gxl_d4d]

I know. Asked the dealer a few times and got the usuall "don't need to change it until the light comes on". Just didn't get around to it till now. Will change it every 40 000km now that I know first hand how easy it is.

Geez gxl_d4d, that's a bloody lot of ks between changes don't you think? I changed my underbody oem filter 20000 k again.

Cheers

Wazza

[Dueler120 Senior Member Find all posts View Profile Close Dueler120]

I have a Donaldson filter & water trap, which was highly reccomended. I must admit that I am VERY relieved to have a pre filter & a watertrap on the common rail diesel.

Same here

[darrlowe Lurker Find all posts View Profile Close darrlowe]

Hi Krypto,
Like you, I used the bolt holes on the Engine bay adjacent to the existing filter. Mounted no problems, no drilling or modifications required.
My TT filter is tight, with only a few mm between the drain hole and the car body. To replace the filter I unbolt the whole unit from the engine bay. My unit has been on for approx 40,000km and no problems so far.

[darrlowe Lurker Find all posts View Profile Close darrlowe]

Swapped out the 31865 with a short version 31863. This gives you more clearance for swapping, only downside is there is no bowl installed to view if there is water in the system, but based on the driving I do this shouldn't be a problem.

[gxl_d4d Advanced Member Find all posts View Profile Close gxl_d4d]

Darrlowe
Does the bowl still screw into the shorter filter?

[darrlowe Lurker Find all posts View Profile Close darrlowe]

Hi gxl_d4d,

It does, I just need to screw it in... I did't realise when I installed it, I just need to find some time to do it.

[gxl_d4d Advanced Member Find all posts View Profile Close gxl_d4d]

Thanks
When you fit the bowl can you please measure the length of the new cartridge. I'm up for a new filter. The CAT ones are 3.6" long (cartridge only, exclude bowl). If the one you used is shorter I'll give it a go.

[Hazza Advanced Member Find all posts View Profile Close Hazza]

Your Prado is 'BUGGED'. http://www.dieselsolutions.co.nz/?gc...FcZfpgodlzgAbA

[darrlowe Lurker Find all posts View Profile Close darrlowe]

Hi gxl_d4d,

Will do. I will be able to swap it out in the next few days..sorry.
Googling - I get the following specifications

Standyne Fuel Filter 31863

30 micron pre-filter water seperator- 3.6" - FM100

Applications
•Cat- 100-6374
•JCB- 32/921001
•Massey Ferguson- 3780931M1
•Perkins- 26560920
•Stanadyne- 30226, 30727, 31863, 34178, 34250

Alternatives
•Fleetguard- FS19585, FS19530
•Donaldson- P550399
•Mann- WK8127, WK8122, WK8143

Hope this help. Looking at these spec's it appears it will be the same as the Cat one.

[darrlowe Lurker Find all posts View Profile Close darrlowe]

Photo’s attached of the bowl installed. With the 31863 there's about 15-20mm of clearance below the drain plug, which is a lot more than the 31865.

[krypto Avid PP Poster! Find all posts View Profile Close krypto]

Anyone know what the thread is on the connection coming out of the filter?

My fuel lines touch the firewall like in the picture above. I've put some armour on the fuel hose but I'd like to replace the straight barb with an elbow so the fuel line goes nowhere near the firewall.

[gxl_d4d Advanced Member Find all posts View Profile Close gxl_d4d]

Krypto,

The thread pitch is 1.25mm, the diameter is 13.7mm so M14 I think but double check. The thread is not tapered as the Cat pipe adapter is sealed with an o-ring.

[gxl_d4d Advanced Member Find all posts View Profile Close gxl_d4d]

Thanks for the pics with the tape measure. The filter you've got is the same length as the standard CAT filter, 156-1200.

I think I'll try a CAT 100-6374 which is the 30 micron version next.

[azzss Member Find all posts View Profile Close azzss]

Just a question about fitting the CAT filter (i'm about to do it), anyone notice any power drop off pushing fuel through a extra filter?. And am i better off fitting the 30 micron filter as gxl d4d mentioned above, or is the one it comes with ok?.
Cheers.