Water in Transmission

[lfilson]

Something tells me the V50 construction is different than the P2. No matter how or where I dont think you can simply drop the AW55 without dropping the subframe, and the engine and tranny are all held by mounts ON the subframe. Specifically for AW55, it has a aluminum frame which is bolted to the AW55, and the aluminum frame is what rests on the mount which rests on the steering rack. Additionally the rear mount also holds the engine, so with the subframe out he needs something to hold the engine, additionally the engine does not sit straight down, but slightly slanted, which I've heard is most difficult to get correct.

And if he does, he needs new bolts for the subframe as the originals are torque to yield.

Thanks for reading my mind. I was wondering this about that video. This isn't a manual transmission it's an auto, and I saw that the whole thing was bolted to a sub-frame when I was working on it and it looks like it all has to drop as a unit.

[dikidera]

"it *may* drive for just a bit before the pump sucks up the gunk and it clogs up the filter. Actually you can also verify this if you pull out the return like of the oil and nothing comes out whilst the car is running"

I haven't tried pulling the return yet, but last night after it sat for a few hours, I was able to drive it forward about 50 feet then it stopped, no reverse, no nothing. Then, this morning, I cranked it and was able to back it up to its original location before it stopped again.

Highly indicative of clogged oil filter inside the transmission. What clogged it? Bits and pieces of the clutch packs as well as potentially some kind of metallic sludge due to the water not lubricating important parts of the transmission which ground them up and released all this particular there.

[lfilson]

Highly indicative of clogged oil filter inside the transmission. What clogged it? Bits and pieces of the clutch packs as well as potentially some kind of metallic sludge due to the water not lubricating important parts of the transmission which ground them up and released all this particular there.

Last night I flushed 24 quarts of fluid through it 3 at a time. There was no indication of bits of pieces of clutches, but there probably still is some residual water. Is the filter you mentioned replaceable?

[dikidera]

It is, by disassembling half the internals of the AW55. The filter filters your oil, you cannot see the debris.

The only way you can is by filling up the oil return line with diesel and using an air compressor to blow out the sludge/debris backwards. Of course you don't want that gunk backing up inside the valve body, so it needs to be removed I think.

[volvolugnut]

I do not see that anyone mentioned the likely cause of coolant in your transmission. Most likely the transmission oil cooler has a leak between trans fluid and coolant. This must be fixed before any other fix is attempted.
volvolugnut

I replaced the radiator last night, and then flushed 24 quarts of fluid through the transmission, 3 quarts at a time.

New radiator should fix the leak of coolant into trans fluid.
volvolugnut

[dikidera]

I do not see that anyone mentioned the likely cause of coolant in your transmission. Most likely the transmission oil cooler has a leak between trans fluid and coolant. This must be fixed before any other fix is attempted.
volvolugnut

I replaced the radiator last night, and then flushed 24 quarts of fluid through the transmission, 3 quarts at a time.

New radiator should fix the leak of coolant into trans fluid.
volvolugnut

Except his transmission is as good as dead. Enough clutch material must have separated to have clogged his filter. He has no pressure to drive the hydraulics inside.

[MoVolvos]

grab a used or rebuilt and swap it out.
kevin albert williams does it in 4 hrs without a lift , works outside in any weather.
this is a volvo deisel but its mostly the same.

.
I love his videos and have watched that one. Wanted to see whether I'm able to replace the clutch myself or have the dealership do the work on our 08 C30 T5 M66.
.

[jonesg]

[jonesg]

Something tells me the V50 construction is different than the P2. No matter how or where I dont think you can simply drop the AW55 without dropping the subframe, and the engine and tranny are all held by mounts ON the subframe. Specifically for AW55, it has a aluminum frame which is bolted to the AW55, and the aluminum frame is what rests on the mount which rests on the steering rack. Additionally the rear mount also holds the engine, so with the subframe out he needs something to hold the engine, additionally the engine does not sit straight down, but slightly slanted, which I've heard is most difficult to get correct.

And if he does, he needs new bolts for the subframe as the originals are torque to yield.

Thanks for reading my mind. I was wondering this about that video. This isn't a manual transmission it's an auto, and I saw that the whole thing was bolted to a sub-frame when I was working on it and it looks like it all has to drop as a unit.

engine can hang from a cross brace and subframe removed before the trans.

theres also an older thread where someone drilled a hole in the trans case and poked holes in the fluid filter, then installed a plug in the hole in the case and used an external trans filter.

[volvolugnut]

I replaced the radiator last night, and then flushed 24 quarts of fluid through the transmission, 3 quarts at a time.

New radiator should fix the leak of coolant into trans fluid.
volvolugnut

Except his transmission is as good as dead. Enough clutch material must have separated to have clogged his filter. He has no pressure to drive the hydraulics inside.

Yes, transmission is dead. I only made the leak of coolant to trans fluid comment to assure it was addressed with the transmission replacement or repair. You would not want the leak to destroy the new transmission.
volvolugnut