When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I've got a filter that appears to be in line with a tube that returns to the back of the transmission fluid pan. The filter includes the following letters/numbers: 3Z 7B155 BB. I suspect there are letters that precede the 3Z but I cannot make them out.
I've attached a picture (left is the front of the truck, right is the rear of the truck):
I would appreciate if someone confirms that this is a transmission filter. If yes, I would also appreciate if someone can tell me if this is a filter that can/should be replaced by the Magnafine transmission filters. I've also emailed Magnafine.
I realize I have an option to switch over to a more robust transmission filtering system (e.g., using Baldwin filters), but I'm not sure I use my truck enough to warrant the expense.
If the line exits that filter to the back of the trans, yes it is a trans fluid filter. Usually you'll see a Magnefine there. Ford installed them on the return line after a trans failure so any gunk stuck in the cooler will be safely cleaned up. I googled the partial number you had and it popped up lots of trans filter hits.
Any idea how much fluid I'll lose when I change filters (assuming I'm reasonably quick in changing the filter). Is the fluid under pressure when the truck is not running?
Any idea how much fluid I'll lose when I change filters (assuming I'm reasonably quick in changing the filter). Is the fluid under pressure when the truck is not running?
Magnafine makes them for Ford, and they are good for what they do.
Pop
Pop,
You were spot on with the amount of fluid loss. Do I need to replace the cup of fluid lost or is it insignificant if the transmission dipstick shows me in range?
I've linked some pictures of the inside of the old Magnefine filter:
Ford had a SB out instructing the use of the filter for remand units. Its since been superseded by a SB replacing the transmission cooler during remand installs (included in the delivery of the remanded units).
IMO: Any filter is better than none! But, if you have a chance one day, I would check the flow before the filter and after the cooler just to ensure the cooler is flowing to spec. I can't see ford producing a newer SB and requirement for a new cooler for no reason. They seem to be on top of things like that.
I did see a joke the other day: What's faster than a 350 Ford Cobra? GM Recalls lately
David... that filter you opened up... did it also have a magnet in there anywhere?
It is usually on the inlet side of the filter, and I didn't see a magnet, but since that filter is is not a true "Magnefine" filter (I suspect it is an SPX Filtran), I was wondering what they looked like inside. It also occurred to me that you might have opened the filter up on the outlet side, and the magnet might still deep inside your cut open cylinder, on the inlet side.
Which side did you open up, the outlet side or the inlet side? Do you mind taking the rest of it apart to see if that filter unit had any magnet at all?
David... that filter you opened up... did it also have a magnet in there anywhere?
It is usually on the inlet side of the filter, and I didn't see a magnet, but since that filter is is not a true "Magnefine" filter (I suspect it is an SPX Filtran), I was wondering what they looked like inside. It also occurred to me that you might have opened the filter up on the outlet side, and the magnet might still deep inside your cut open cylinder, on the inlet side.
Which side did you open up, the outlet side or the inlet side? Do you mind taking the rest of it apart to see if that filter unit had any magnet at all?
I cut open the inlet side along the grove that is visible in my first post.
I'll revisit in the morning to be sure I didn't miss something.
I had the sense that the magnet was bottom center of the third picture, but I'll confirm in the morning that what I thought is a magnet is in fact a magnet.
In making my original comment that there didn't appear to be anything worth noting when I opened up the filter, I was really focused on the absence of metal particulate in the filter. Then again, my guess (and I think this was whitetmw's point) is that debris is being trapped in the cooler.
I believe you don't have to "cut" them apart. I think the end actually screws into the body of the filter body, and they are o-ringed to seal. Pop
Pop. that is true for the Magnefine filters, the Ford rebranded Magnefine filters, and the Magnefine knock off filters labeled by Raybestos, Napa, and Wix...
But the filter in THIS thread is none of these. Ford moved away from Magnefine filters, going with a different supplier, but keeping the same basic part number (7B155), only changing the prefix and suffix to those part numbers.
Notice that the filter body in David's first post is smooth? That is not a Magnefine supplied filter. I suspect the filter supplier in this case is Filtran. The internal parts to this filter are different as well. For example, the bypass spring is much shorter on this filter, about half the length, as observed from the photos the OP later posted.
Ford issued a special service message articulating engineering's concern about inline filters leaking and not going into bypass mode... so it would not be unreasonable for Ford to have moved to a non-openable inline filter, before dropping them altogether.
Ive never personally seen the type of filter David has in real life, but it seems possible that in this case, this filter may not be as easily openable as the Magnefine.
The only question is... like a ship in the bottle, how did the filter media get into the pod WITHOUT it being openable? David's picture in his first post does show a groove on the left hand side of the filter housing. Could that be where it opens?
David, here is an example of the magnet in the Magnefine, that I removed from a Ford branded version the other day. The radial witness marks are the ferritic debris that gathered where the radial ribs of the magnet retainer contacted the magnet.
Some thoughts. There's a round rubber piece that I hadn't previously noticed that had fallen on the floor in the lower right of the first picture. I can't swear that it's even from this assembly but I suspect it is. In the various pictures, I tried to keep the parts in the order that I believe they should be assembled. What I thought was a magnet (shown copper color in picture 4) is not. However, there is a magnet and it is the sleeve inserted in the cylinder (and upon removal proved to have quite a bit of sludge - but no parts - attached to it). Though I doubt it would move as assembled, it freely rotated when I went to disassemble it. The last picture attempts to show how the inner parts are assembled. If you would like me to drop the assembly in a Ziploc and box it and mail it to you, I can do so.
Made the mistake of not logging the old filter first, but I'm seeing Transmission Fluid Temperatures of up to 175F with the new Magnefine filter. This was after a 45 minute run when I was conducting WOT tests.
I've got a stock cooler.
I know what has been reported as ideal for these transmissions, but I'll keep an eye on the temperature gauge in case there is an obstruction (which I don't think I can know other than by watching the transmission fluid temperature).
I didn't think I would get up to 175F that fast.
In the event there is a blockage, is there some type of bypass? If not, am I correct in assuming the fluid will simply blow out at the weakest point?
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
