What is the canister on the inside of the front bumper, driver side?M923A2

[Snowman7]

I have a '91 M923A2.

I apologize if it is a dumb question, I've looked through the entire -10 and checked the first volume of the support manuals as well as searched this forum, locally and via google, and I don't see any reference to it.

It has a T-handle on the end of it, and lines going toward the engine. It is leaking oil, and I don't know what it is. I didn't want to just try to open it, and dump more oil everywhere before knowing more about it.

I was driving a short distance(~6miles) and noticed oil pressure lowering, so I immediately stopped and checked dipstick. Oil level is perfect. Pressure will come up with rpm, but at idle, sits almost at zero. I read another post with a similar issue, and it was mentioned that this is fairly common, so I'm not terribly concerned about the pressure.

I noticed the oil leaking from this questionable canister, and am wondering if that could cause the issue? I have not checked the sending unit or the gauge just yet.

I'll upload a pic later for clarification if someone can't identify it tonight.

Thanks in advance.

 

[CBR Metalworks]

It is an extra oil filter best I can tell, a friend has a truck with one as well. The low oil pressure issue is common on the 8.3, every one I have had reads about 15 or less at idle.

 

[crasheej]

Got a picture of this. Might help some of us help figure it out.

 

[Snowman7]

This thing. Like CBR says, looks to me like another filter or something. The lines go to the bottom of the oilpan, and into the rear of the block.

This line, to the rear of the block has a valve on it, would make sense to change filter.

anyone know if they have a replaceable gasket or O-ring that may be causing the leak?

 

[mcmullag]

What the heck?! I have never seen this before. Thanks for posting. I hope somebody here knows what this is about.

 

[timntrucks]

my truck dont have one of those.. but to be sure ill go look tomorrow

 

[gimpyrobb]

Looks like one of the old "TP" filters. Some of them used paper towel rolls. Are you sure it doesn't just need a few twists to tighten it up(Like the oil dipstick)?

 

[MO MV man]

So it's like the filters that used to be on the old L-Head Willys and the like?
Pressurized oil goes in one end and what remains of that pressure that same pressure pushes it into the pan?
Like the old Willys used to dribble back into the timing cover.
Not a super effective means of filtration.

Wouldn't that sort of line coming off an oil gallery with no dead head or restrictor/orifice produce a pressure drop?

 

[73m819]

I am guessing that someone moved the oil filter from where it was to where it is now to make it easier to change.

 

[goldneagle]

Could it be what they call a bypass oil filter. I installed one on my first Deuce. It slowly filters the oil to a much finer level so it will last longer between changes. It is an add-on not a replacement for the original oil filter setup.

 

[Rifleman]

How about an oil accumulator like in this link? http://accusump.com/

 

[Snowman7]

Lol, this is my first foray into this world, how did I get a truck with some random oddball part!? I haven't really messed with it, because I wasn't entirely sure what it was. I'll check to see if the main oil filter is in the conventional spot on the other side. I'll try to tighten it up and see if that helps. If it doesn't I guess I'll try to shut that valve and open it up!

Thanks for all the input!

 

[davo727]

A couple of the bypass oil filter setups I have researched used a 1/16 orifice in the inlet line so they didn't pull much oil volume off the engine.

Wouldn't that sort of line coming off an oil gallery with no dead head or restrictor/orifice produce a pressure drop?

 

[Snowman7]

Well, I put a tool on the T-handle and cranked it down a little more, and I think that stopped the leak. I haven't driven it very far yet, but it looks like it should be ok. I also put an oil pressure tester on it, and pressure was 65psi at cold start, 78 at 2100rpm, and after a 10 min drive it was 25psi at idle. Seems fine to me, anyone know part numbers for a new oil pressure sending unit and/or gauge?

 

[Monkeyboyarmy]

I had one on the first A2 I picked up. When I started it up in the 10 degree weather, it leaked like a sieve. Put a crank on it and drove it 420 miles. It is a bypass filter. I am trying to get a close up picture of it from the guy I sold it to. I believe it had the element number right on it.

 

[MO MV man]

Oil pressure sending unit......

I just PM'ed you some sending unit info.

Well, I put a tool on the T-handle and cranked it down a little more, and I think that stopped the leak. I haven't driven it very far yet, but it looks like it should be ok. I also put an oil pressure tester on it, and pressure was 65psi at cold start, 78 at 2100rpm, and after a 10 min drive it was 25psi at idle. Seems fine to me, anyone know part numbers for a new oil pressure sending unit and/or gauge?

 

[Csm Davis]

That is a bypass oil filter and they work great normally it was probably made in Mississippi as all of the units I have seen were. I would keep it if you can get it to working properly, they are expensive to buy but not to maintain. Would love pictures of where the other line goes.

 

[Snowman7]

I just PM'ed you some sending unit info.

Got it! Thanks!

Here is the line that goes to the bottom of the oil pan.


If you could find the part number for that filter, I'd appreciate it!