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> F4a22-2 Front Pump, Transmission, front pump removal?
Ken Mauragas
post Jul 7 2007, 11:24 AM
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Drives: 1992 Mitsubishi Expo Sport LRV



Hi,
I ve removed my 1.8L from the car. Left inside is the tranny. I need to get the front pump out of it. How is this done? I removed the 6 bolts on the face of the pump but now I cannot get it to move. Is there something else I need to do to remove the pump? The seal is bad for the 2nd time due to the torque converter bushing spun in the pump. I tried to glue it in with JB weld with no luck .It worked for a time then failed once again causing the seal to leak. Now I would like to replace the pump from a junk yard and have a time getting the pump to break loose. Is there something to grab and pull it out? Do I need to remove the front transmission housing with is bolted to the cross member and holding the transmission is the car? I do not see why this would be necessary. Many thanks for the help. Ken

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jetubet
post Aug 27 2007, 07:37 PM
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Drives: 2 Expo's, 2 Expo LRV's



There are two bolt holes that have a pocket beyond the threads. I think they're at the 2 and 7 o'clock positions. You can use a special too to thread into these holes and press the pump out. Or if you're careful you can use two bell housing bolts. You have to be careful using the bolts though because you could damage the case threads if your pump is stubborn. Generally once it starts to move you can pull it out by hand. It's just getting it started that can be difficult. Also it can be difficult to get the clutch packs to re-align with the trans horizontal. The front clutch will want to come out with the pump.
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Ken Mauragas
post Aug 27 2007, 09:00 PM
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Drives: 1992 Mitsubishi Expo Sport LRV



Many thanks that worked fine. Yes it was a pain putting it back together but it seems I did fine until I started the car,put it into gear and notice that I could not stop the rotating tires because it would kill the engine.
When I had the engine out, I took the front pump apart and saw that the bearing that rides on the torque converter had come loose due to the tabs breaking off and allowing the bearing to spin on the torque converter which killed the rubber seal allow trans fluid to leak out. I went to mitsubishi to buy the bearing and they sell only the pump. I went to a junk yard and found something that looked very close to what I had.It was a KM175 I think. I took the pump and went home. Started to install the pump and quickly realized that I had a pump that was about a 3/32 to long to fit. the rear extension piece was longer then the old one.WOW what a mistake. Ok I took the pump apart and got out my calipers and began to measure everything. I found the the rear of the old pump and the front of the new km175 would make a pump I needed. I failed to measure the inside diameter of the rubber seal on the pump gear. I also am not real crystal clear on which way i put the pump gear into the housing.I think it is in there with the rubber facing out towards the other half of the pump. I need a bit of help as to what goes where and why does it stay in gear so hard.during idle. I didnt realize it could do that.Got any ideas? I have taken loose the valve body. I have not opened it. thats as far as I got. Ill need to pull the engine again to go into the pump. Ken
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