THE NEW HOLLAND JAC545440 FILTER may or may not acceptably fit my 1968 Sears Super Hydro-Trac 12. Please see notes and pics regarding longer gooseneck and different seating method and make your own decision.
Edit/warning: During and after installation, the neck on the New Holland filter is very probably not a good fit in the Sears hydro housing. That filter was tilting all over the place on the spring while trying to seat the pan/plate. I'm not confident I have the filter seated properly - maybe the filter tipped over?? And with this neck's fit, I doubt it would be possible to have confidence after installation. I've got the creeps about it. I may just pull the pan and see about modifying the neck or using the old filter.
I do not know if maybe this particular filter just has an out of spec top cap or what is going on.
A spate of pictures follows - some with a ruler for scale.
1.) The gasket stayed fully in one piece attached to the aluminum housing
2.) There was a slight haze of wear materials on the pan/plate - less than .005" thick
3.) I knew it would fit even under the tractor when I saw the PN Sawdust referenced inked on the old filter
4.) The gooseneck on the New Holland filter is slightly longer. IMHO, it will not be a problem but please see footnotes (*) and decide for yourself.
5.) The spring recess on the NH filter is less sharply formed; might take more balance during install
6.) The drain plug is trying to strip. Appears this is due to the plug itself having threads end too soon up by the head. I'll deal with it; no biggie.
7.) NO seal was present between the filter and the trans housing. I'm going to do that differently I think
8.) This particularly old filter did NOT fall apart on disassembly. While I want the old filter for a last resort spare, I went ahead and pulled on the end caps hard. I couldn't get it to come apart. So whatever metal fatigue or weld failures may be making some fall apart, this one hasn't done that.
I also tried crushing the old filter to the tune of maybe about 30 pounds; it doesn't flex and remains unharmed so the new filter with added spring pressure probably won't harm the sheet metal reinforced filter.
Maybe important: Whereas the fluid drain a few months ago took overnight to get the last quart out of the upper reaches, once the filter is removed, it drains FAST. Does this mean the filter was restrictive due to contaminants or design? I don't know. Just thought I'd mention it before someone else gets a faceful of fluid.
(*) Longer gooseneck discussion: Due to the shorter gooseneck, the old filter seated flat to flat - that is the top flat sheet metal of the filter to the flat surface in the housing. Whereas, the new filter with longer gooseneck seats the tapered neck into the bore - the flat surfaces do not touch. This makes the bottom/spring seat area of the new filter maybe 3/16" lower. That is, about 1-1/16" from filter spring seat to gasket flange instead of 1-1/4". The pan plate is very thick and the spring isn't particularly strong so it should deal with this added spring pressure ok as long as the filter doesn't collapse. I doubt the filter will collapse due to the sheet metal surround. The old filter showed some fine metal residue where it has been wearing flat to flat.
The spring wire is pretty thin so I don't think the added installed spring compression is going to create a problem. However, will having the gooseneck kind of wedged into the hole in the housing cause more or less fine metallic wear from vibes than the original? I don't know. I'm going to look for a neoprene or nitrile washer or O-ring that might seal better... and decide whether to use it - or NOT.
(edit: I'm questining this neck thing after installation. While trying to seat the pan, that filter was tilting all over the place. I hope it didn't flip sideways. Guess I'll know pretty quickly after startup! I'm beginning to wonder if this particular stamping is just out of spec.)
Because info was so scarce back when I searched prior to this thread, I took a LOT of pics. Probably excessive, but ya' know how that is.
Ok, back out to the garage to see if I can find a fat O-ring... that I may or may not use.
I may or may not try pushing the new filter up into place with some minimal force and twisting the filter to see if maybe the flats might touch - not that they need to. If I pull this gaff, I'll be sure to wipe out any metal created by this before final assembly.
Edited by MountainMichael, December 05, 2014 - 08:43 PM.