545 tranny taking much more fluid than expected after drain and fill - JeepForum.com
 
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post #1 of 12 Old 08-10-2011, 04:39 PM Thread Starter
josephmartins
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545 tranny taking much more fluid than expected after drain and fill

I just finished a drain and fill, and changed both filters on my 01 WJ's 545 transmission.

I expected the refill to take 6.5 qts....so I added 6.5 and ran the Jeep to bring it up to temp. I shifted through all of the gears and the level seemed fine at the time.

Then I drove maybe 50 miles after the fluid change and rechecked the level. It didn't even register on the stick. It took another 1.5 qts just to increase the level slightly above the cold mark even though the trans is up to temp. I'd like to add more fluid but I thought it might be a good idea to run this by the forum first to see if I am missing something.

The trans fluid level was nearly at the hot mark (at temp) prior to the drain and fill. Why might a simple drain and fill require more than the expected 6.5 qts? We're not talking about half a quart more....this is now approaching 2qts more than expected.

I looked under the vehicle several times since the job was finished and there's no visible leak.

Any ideas?


Kind regards,

Joe Martins
Milford, NH

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post #2 of 12 Old 08-10-2011, 04:56 PM
MoparMan1990
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i bought mine and it was low so i checked for leaks i think they changed it and it did the same thing
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post #3 of 12 Old 08-11-2011, 06:21 AM
dutch724
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Yup, when I changed my tranny filters the same thing happened to me. I bought an extra bottle of fluid just in case and I couldn't believe that I used that one and it still wasn't full. I had to run out and get at least 2 more quarts and I kept looking under the Jeep to see if it was leaking out. It's full now and it is maintaning it's level.
I kept questioning myself if it was a good idea to put a drain plug on the tranny pan, because I thought it was leaking thru the plug, but when I looked at the plug it wasn't wet or nothing.
Sounds like everything it normal if your having the same issue.
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post #4 of 12 Old 08-11-2011, 07:39 AM
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Mine took almost 8, maybe 7.75 after recent rusty pan replacement (no fluid leaks), but in addiiton to the 2 filters changed, I disconected the cooler lines too.

I actually undid the soft hose of the return and ran it a bit to flush it somewhat, the disconnected the feed to drain it, since the feed pumps up from the bottom of the radiator.

I read somewhere you can drain most of the converter fluid by loosening the solenoid body mounting bolts, but I didn't pursue it.

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post #5 of 12 Old 08-11-2011, 08:48 AM
dutch724
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I have heard the best way to get a complete tranny fluid change is to get (2) 5 gal buckets. keep one empty and fill one with the amount of tranny fluid that the tranny holds and disconnection the intake and outtake of the tranny lines going to the cooler and put the outake into the empty bucket and the intake into the bucket with all the fluid in it and start the Jeep up and it will pump out the old fluid and suck up the new fluid. When the full bucket is empty then the job is done. I would only do that if you don't need to change the filter or maybe change the filter before you start all that.
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post #6 of 12 Old 08-11-2011, 09:17 AM
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I always use 8 quarts for a drain and fill on a WJ with the 545RFE.

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post #7 of 12 Old 08-11-2011, 09:27 AM
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When i changed mine with both filters last time, i endes up at 7.5qt.

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post #8 of 12 Old 08-11-2011, 10:21 AM
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I might hold the record, but I had it up on the ramps for a while.

9 qts after pan drop and filter replacement

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post #9 of 12 Old 08-11-2011, 11:46 AM
ratmonkey
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Quote:
Originally Posted by dutch724 View Post
I have heard the best way to get a complete tranny fluid change is to get (2) 5 gal buckets. keep one empty and fill one with the amount of tranny fluid that the tranny holds and disconnection the intake and outtake of the tranny lines going to the cooler and put the outake into the empty bucket and the intake into the bucket with all the fluid in it and start the Jeep up and it will pump out the old fluid and suck up the new fluid. When the full bucket is empty then the job is done. I would only do that if you don't need to change the filter or maybe change the filter before you start all that.
return line from the cooler returns to tank. there is no suction. you need to add through the dipstick.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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post #10 of 12 Old 08-11-2011, 08:00 PM
straty1987
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the filter hold fluid just like when you change engine oil the filter holds like half a quart.

also are you checking it on level ground?
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post #11 of 12 Old 08-12-2011, 12:34 AM
85IrocZ-28
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When I changed my filters and installed a shift kit, I was surprised how much fluid it took...almost 8 quarts.

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post #12 of 12 Old 08-12-2011, 02:02 PM
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The FSM says 6.6L of fluid on a drain/fill, 13.3L on an overhaul. I think I put a good 9-10 quarts in when I dropped the pan and replaced the filters. I don't know the conversion of liters to quarts, but you should be in the ball park.

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