Front Pump
Front Pump I am looking for a little help with all the searching I believe I have broke the front pump in my 4l60e. when I bolted the engine and trans together it didnt go as smooth as it should have and I heard a pop. When I got everything in the car and fired it up no movement in any gear. I did just put in a 2800 stall. Is this something I can do or am I better off having a trans shop put a new pump in. Also were is the best place to buy a pump its a 98 z28. thanks bobby
TECH Junkie
Joined: May 2012
Posts: 3,050
Likes: 716
From: Poplarville, MS
A trans shop will be able to disassemble your pump and replace only the parts that are broken. Yes you can remove the pump yourself if you have a reasonable amount of mechanical ability but you should get a good trans repair manual first. If you disassemble your pump you will need a large band clamp to realign the halves.
What brand stall are you using?
What brand stall are you using?
Teching In
Joined: Dec 2009
Posts: 18
Likes: 1
Here's a 4L60E pump rebuild video.
PM if you need a manual
Here's a couple of links for parts
https://www.700r4l60e.com/store/prod...&cat=85&page=1
http://www.transmissionpartsusa.com/...rts_s/9155.htm
PM if you need a manual
Here's a couple of links for parts
https://www.700r4l60e.com/store/prod...&cat=85&page=1
http://www.transmissionpartsusa.com/...rts_s/9155.htm
Last edited by garleest; Jul 28, 2014 at 09:15 PM.
Moderator
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
I've helped lots of members here rebuild their trans, but I would not recommend removing the pump yourself for a number of reasons:
* The bell housing can be difficult to remove. (You need a torx T50-Plus bit and likely an impact wrench and proper technique not to strip the bolts.)
* On an older trans, the teflon rings from the reverse drum likely need to be replaced after removing the pump. Rings need to be installed and "resized".
* It takes an experienced eye to determine if the pump rotor surfaces are worn out or damaged from a bad converter install.
* Easy to miss an o-ring or other part then the pump is rebuilt by a first-timer.
It the pump was ruined by a bad converter install, it may create loose metal which will also ruin the converter. I would also want a pro's opinion on whether the metal got into the rest of the trans.
Sorry, but a bad converter install often means a new pump, a rebuilt trans, a new or rebuilt converter and replacement of any aftermarket cooler.
* The bell housing can be difficult to remove. (You need a torx T50-Plus bit and likely an impact wrench and proper technique not to strip the bolts.)
* On an older trans, the teflon rings from the reverse drum likely need to be replaced after removing the pump. Rings need to be installed and "resized".
* It takes an experienced eye to determine if the pump rotor surfaces are worn out or damaged from a bad converter install.
* Easy to miss an o-ring or other part then the pump is rebuilt by a first-timer.
It the pump was ruined by a bad converter install, it may create loose metal which will also ruin the converter. I would also want a pro's opinion on whether the metal got into the rest of the trans.
Sorry, but a bad converter install often means a new pump, a rebuilt trans, a new or rebuilt converter and replacement of any aftermarket cooler.
thats more of what I was afraid of. Guessing off to the trans shop it will be let them decide what will need replaced. The converter was build by CSI converter specialist ( a local shop)
Thanks for the links and replies
Thanks for the links and replies
