Guys ok this is what is going on i am changing the gasket of the oil pan of my "89 240sx but while on the ground facing up i notice that there is some oil coming from the crankshaft...and i know that it has an oil seal , that it might be broken but i dont know how to change it or if i need a special tool to take the chankshaft out......
guys if this ever had happened to you just tell me pls if you got some pics even better....
what to do .....what toolsss....to use ....or any adjustements after is done........ok thanks guys....
and by the way did i mention that i am stuck with the unbolt oil pan under the car i can't take it out any sugestions thanks a million....... want a corona or two
ps.. and i did search hard with no results...
Modified by carlitos26 at 7:44 PM 3/25/2007
Help on how to change crankshaft seal...
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carlitos26
- Posts: 20
- Joined: Wed Jan 31, 2007 6:30 pm
- Car: NISSAN " '89 240SX COUPE"
Re: Help on how to change crankshaft oil seal... (carlitos26)
Well, im trying to think of a way to do it easily but i dont think you could ever get the old seal out, so ill tell you the hard way and see if anyone can tell you if the easy way works.
Im not even going to post the easy way because it comes from my head, and i think theres a possibility of messing up the sealing surface between your crank and the seal by doing so. If anyone has a different way of doing this please help the guy out ^^.
I changed mine when i was replacing my headgasket.
You need to take off your radiator shroud, fan, belts, water pump, valve cover, upper timing chain cover, crankshaft pulley, lower timing chain cover.
The seal itself is in the lower timing chain cover. After you get it off, take a pick, or even a flathead screwdriver would probably work and push out from the backside of the seal. It will pop right out.
To replace it, get a socket or something of even size and push it back in there. When its as far in as you can push, take a hammer and beat lightly on the backside of whatever you are using thats equal size of the seal itself. You need to make sure it goes in evenly, if you do one side at a time it could damage the seal. Push it as far as it will go in, you will hear a change of sound if your using a hammer when its fully seated. I think i got that seal from the dealer for under 15 bucks.
Before you do any of this, make sure you have a FSM. I printed out the pages in the EM section of it for timing chain. Oh and replacing your timing chain while your at it is a good move since you have it ready to go.
Dont use a cork type gasket for your oilpan, use permatex ultra grey. You will need a full tube of it if your gona replace your crank oil seal anyway, both timimg chain covers need it.
Here is a link to how to do your oilpan --> zerothread/238020
Im not even going to post the easy way because it comes from my head, and i think theres a possibility of messing up the sealing surface between your crank and the seal by doing so. If anyone has a different way of doing this please help the guy out ^^.
I changed mine when i was replacing my headgasket.
You need to take off your radiator shroud, fan, belts, water pump, valve cover, upper timing chain cover, crankshaft pulley, lower timing chain cover.
The seal itself is in the lower timing chain cover. After you get it off, take a pick, or even a flathead screwdriver would probably work and push out from the backside of the seal. It will pop right out.
To replace it, get a socket or something of even size and push it back in there. When its as far in as you can push, take a hammer and beat lightly on the backside of whatever you are using thats equal size of the seal itself. You need to make sure it goes in evenly, if you do one side at a time it could damage the seal. Push it as far as it will go in, you will hear a change of sound if your using a hammer when its fully seated. I think i got that seal from the dealer for under 15 bucks.
Before you do any of this, make sure you have a FSM. I printed out the pages in the EM section of it for timing chain. Oh and replacing your timing chain while your at it is a good move since you have it ready to go.
Dont use a cork type gasket for your oilpan, use permatex ultra grey. You will need a full tube of it if your gona replace your crank oil seal anyway, both timimg chain covers need it.
Here is a link to how to do your oilpan --> zerothread/238020
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carlitos26
- Posts: 20
- Joined: Wed Jan 31, 2007 6:30 pm
- Car: NISSAN " '89 240SX COUPE"
Re: Help on how to change crankshaft oil seal... (480sx)
and wat is the easy way ...cause that sound dificult ...but you know what i remember like 3 or 4 years a go i had a 90 240sx and it needed a crankshaft oil seal to be changed also ...and my friend did it, but he did't take out the timing chain covers nor the water pump..now i regreat because i wasn't paying atention when he was doing it...all i recall is he use a screw driver....or something like that.......
want some popcorn....thanks for the help...
want some popcorn....thanks for the help...
Re: Help on how to change crankshaft oil seal... (carlitos26)
Changing the front crank seal is very easy to do:- remove all front belts- remove the crank pulley center bolt- remove the crank pulley- use a large screw driver to pry out the old seal- lubricate the inner lip of the new seal with motor oil- install seal with inner lip pointing into the block; tap seal in with a hammer- install pulley and tighten center bolt to 142-152 Nm (105-112 ft-lbs)- install belts
To remove the oil pan from the car:- remove front sway bar- unbolt the front motor mounts from the front cross-member- jack the front of the motor up about 3"- unbolt oil pickup; be sure to retain O-ring when installing
To remove the oil pan from the car:- remove front sway bar- unbolt the front motor mounts from the front cross-member- jack the front of the motor up about 3"- unbolt oil pickup; be sure to retain O-ring when installing