Replacing the Front Seal - Page 11 - Nissan Forum
GA16DE 1.6L Engine Engine Discussion: 91-99 Sentra, 95-98 200SX, 91-93 NX1600

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#151 Old Feb 26th, 2010, 04:09 PM
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when i got the pulley off it had a seal on the inside of it. is that where i'm supposed to put the new seal??




or is it supposed to go somewhere in there??




and which way is the seal supposed to go in cause one side is solid and flat and the other has a groove and like a little spring inside (you see that in the first picture)??
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#152 Old Feb 27th, 2010, 12:35 AM
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The pully is a harmonic balancer, leave the rubber alone.
the seal goes in the front of the engine

2003 Pathfinder from 2004 SE 4WD
1997 SER 5sp Manual from new Rear Ended 2009 !!
Gone to the Knacker yard...
New ride 3.0 manual RWD not a Nissan !!!
1997 Sentra GXE from new .... Sold 2008
2001 Sunny N16 RHD from new (N16 Nissan Bluebird Sylphy) Sold
#153 Old May 24th, 2010, 06:19 PM
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#154 Old Jun 10th, 2010, 09:58 PM
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if the seal is really leaking, you will have to pull the transmission to replace it. if it's a standard, just pull the tranny, pry out old seal, and use something the same size as new seal to drive it in square. if automatic, then you have to take torque converter off the input shaft to replace seal. make sure when you replace converter to push in on it while rotating it.it has to be seated all the way in or you will bust the pump. usually 3 notches, maybe four.

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#155 Old Jun 11th, 2010, 08:35 AM
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Quote:
Originally Posted by kidashley25 View Post
if the seal is really leaking, you will have to pull the transmission to replace it. if it's a standard, just pull the tranny, pry out old seal, and use something the same size as new seal to drive it in square. if automatic, then you have to take torque converter off the input shaft to replace seal. make sure when you replace converter to push in on it while rotating it.it has to be seated all the way in or you will bust the pump. usually 3 notches, maybe four.

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The seal is the engine front crankshaft seal, not the transmission seal.

2003 Pathfinder from 2004 SE 4WD
1997 SER 5sp Manual from new Rear Ended 2009 !!
Gone to the Knacker yard...
New ride 3.0 manual RWD not a Nissan !!!
1997 Sentra GXE from new .... Sold 2008
2001 Sunny N16 RHD from new (N16 Nissan Bluebird Sylphy) Sold
#156 Old Jul 14th, 2010, 10:08 PM
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I have been watching this post for six or more months knowing that I needed to do this. My wife called me on sunday and said that all the engine lights came on and what should she do. I told here to pull over and look and see if a belt was off. It was and I told her to turn on the heater even though it was about 95. She got it home and I have been working on it since sunday. My first thought even though I knew the oil was leaking was just to through the belts on and move on. The belts gave me fits and after yelling about every foul word I could on sunday by sundown I just let it go. After thinking about it that night I thought I am going to have to take the wheel off to replace the belts I might as well replace the seal on the crankshaft and be done with that oil leak that is costing we about 20 dollars a month. Pulled it in the garage on monday jacked it up pulled the wheel put a jack stand under it and chocked the wheels. Thats were it stayed untill today I had to think about if I was going to buy the tools are try some of the tricks I had seen on here. Tuesday night we were in the Home Depot and looking at a 29 dollar air impact gun and then we saw a whole set with air rachet and grinder for 55 dollars. Enough said bought and started to use it on wensday. I removed the plastic panel with the air rachet it came with an attachment for screw driver tips had it off in about a minute. Then I started using the impact wrench and there were problems. I dont know if 260 lbs of torgue is enough to break the nut but I used it for about an hour with no progress. After that I did the trick bumbing the starter with my rachet wrench against a piece of firewood. Two bumbs loose bolt and on with the pulley puller. Now in the morning I will return the pulley puller to advance auto and pick up my seal witch they did not have in stock. Total cost of repair 7 dollars for 27 mm socket, 55 dollars for air wrench kit, 8 dollars for seal. Total cost of repair 70 dollars and I have some new air wrenchs for other projects. The only thing I really had to have was the seal and socket so I guess it could have been done for 15 dollars. I know its a bit shade tree but the starter bumbing trick was a saver for me maybe it was broke a bit by the impact wrech but it would not come lose untill I bumbed the starter. My biggest worry was the crankshaft seal but I will admit that I think putting the belts back on will be the hardest thing. Those adjustment places are about worthless unless you got the arms of a nine year old. My advice to those out there thinking about the impact wrench skip it if its a money concern. I dont mind buying it I will use it in the future but its not absolutly nesesary. The puley puller was the number one tool to those of you who said you pulled of by hand my hats of to ya. I think if I had everthing in hand I could do the job in about 5 hours with lots of breaks. To the guy that said he could do it in an hour I believe him with the right tools it could be done.
#157 Old Jul 15th, 2010, 08:40 AM
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Well done.
The starter bump technique was taught to me by a dealership service manager when I was a teenager in England.
It has worked on everything from a 997cc to 7500 cc engine without an issue.
If you think about it the starter only gets the engine rotating maybe a 1/12 of a turn, but its moving when the slack is taken up and the impact undoes the bolt. So all the engine inertia undoes the bolt plus the starter if its still engaged. And that's a definite if because Its a very short bump.
I have never damaged a starter or ring gear.

2003 Pathfinder from 2004 SE 4WD
1997 SER 5sp Manual from new Rear Ended 2009 !!
Gone to the Knacker yard...
New ride 3.0 manual RWD not a Nissan !!!
1997 Sentra GXE from new .... Sold 2008
2001 Sunny N16 RHD from new (N16 Nissan Bluebird Sylphy) Sold
#158 Old Sep 28th, 2010, 10:08 PM
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Great information everybody! I have read all 11 pages on this sticky, and feel I have a very good information base to start this project, as I am a semi-professional shade tree mechanic ... I am a bit confused as to the difference between the standard and automatic transmission with regards to the "starter bump" trick ...

I have a 1994 Nissan Sentra LE, 1.6L Manual transmission ...

My understanding after reading this post, is that if you have a standard transmission, and someone holds their foot on the brake pedal, it will hold the crankshaft pulley stable while the bolt is loosened?

And if you have an automatic, you should position a 27mm socket and breaker bar on the ground or somewhere stable, and disconnect the primary wire leading to the distributor to prevent the engine from starting, the "bump" the starter to loosen the crankshaft pulley bolt?

I would appreciate a bit of clarification before I attempt this repair ... I have a new Beck/Arnley seal, a set of 3 pulley puller tools (from Habor Freight), a 27mm 1/2 inch drive socket and 1/2 inch drive ratchet ... however, I do not have a breaker bar, at the moment. I also do not have air tools or any impact wrench type tools. I appeciate any assistance or clarification regarding this repair, which I am hoping to complete tomorrow.

My thanks, in advance!
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#159 Old Sep 29th, 2010, 08:33 AM
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Quote:
Originally Posted by 94N SentraLE View Post
Great information everybody! I have read all 11 pages on this sticky, and feelI am a bit confused as to the difference between the standard and automatic transmission with regards to the "starter bump" trick ...
No difference between Auto and Manual, I have used for both.

Quote:
Originally Posted by 94N SentraLE View Post
My understanding after reading this post, is that if you have a standard transmission, and someone holds their foot on the brake pedal, it will hold the crankshaft pulley stable while the bolt is loosened?
Yes this will work. use fourth or fifth gear, but I use the starter bump

Quote:
Originally Posted by 94N SentraLE View Post
a 27mm 1/2 inch drive socket and 1/2 inch drive ratchet ... however, I do not have a breaker bar, at the moment.
I would not use a ratchet for this.....maybe see is you can get a 1/2 breaker bar at Harbor Freight.

For years I used a cheap box wrench's with a 1/2 inch hole i drilled in it and a 1/2 rod jack handle....
It doesn't have to cost much.

2003 Pathfinder from 2004 SE 4WD
1997 SER 5sp Manual from new Rear Ended 2009 !!
Gone to the Knacker yard...
New ride 3.0 manual RWD not a Nissan !!!
1997 Sentra GXE from new .... Sold 2008
2001 Sunny N16 RHD from new (N16 Nissan Bluebird Sylphy) Sold
#160 Old Sep 29th, 2010, 11:11 PM
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In Deep

Thanks Ian .... I have procured a breaker bar from Harbor Freight, and it has helped to some degree ... but now I am stuck trying to get the Power Steering belt loose, and I don't know what to try next ... any help you or the other forum people could provide would be greatly appreciated ... I was able to get the adjustment bolt loose, but I am having a hard time figuring out where the "pivot bolt" is ... to the front or the passenger side or driver side ... where the F is the proper bolt? I have a Haynes manual, but it is very vague as to where the bolt is!

Please Help!
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#161 Old Sep 30th, 2010, 08:39 AM
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Its been a while so I don't remember exactly, I do remember I had trouble finding it too !!!
Try this from the FSM.
If you still cant find try search as this has come up before.



EDIT

Looking at the image I am not sure which is which. try looking for a bolt at the opposite side to the adjuster.

2003 Pathfinder from 2004 SE 4WD
1997 SER 5sp Manual from new Rear Ended 2009 !!
Gone to the Knacker yard...
New ride 3.0 manual RWD not a Nissan !!!
1997 Sentra GXE from new .... Sold 2008
2001 Sunny N16 RHD from new (N16 Nissan Bluebird Sylphy) Sold

Last edited by IanH; Sep 30th, 2010 at 08:51 AM. Reason: added
#162 Old Sep 30th, 2010, 08:44 AM
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And download the FSM. The common one floating around is for the 96 but does well for 94 -97, and good enough for 98 and 99

2003 Pathfinder from 2004 SE 4WD
1997 SER 5sp Manual from new Rear Ended 2009 !!
Gone to the Knacker yard...
New ride 3.0 manual RWD not a Nissan !!!
1997 Sentra GXE from new .... Sold 2008
2001 Sunny N16 RHD from new (N16 Nissan Bluebird Sylphy) Sold
#163 Old Oct 4th, 2010, 06:48 PM
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PLEASE PLEASE PLEASE! USE A 2 JAW PULLER! You can get a set from HFT for around $18. Might as well buy a seal puller too since they don't cost much.That beats the heck out of the $150 for a new pulley if you use a prybar! Ask me I know! I bought the seal from Rockauto for $3.13 (of course it doesn't include shipping, so order extra stuff I.E belts, filters etc.)Just make sure they all are shipped from the same place or they double bang you with shipping. Use the starter method for pulley bolt removal, it works great! Now I'll just have to replace the oil soaked worn out rubbers under the car. It's been leaking for a long long time. I could have saved a $100 or more on oil if I had done this 2+ years ago..... 220,865 miles on the odo so we'll see how long she lasts. Not bad on a 94 Sentra.
#164 Old Oct 5th, 2010, 12:51 PM
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Hey I got the seal in !!! I used the 2 jaw puller from Harbor Freight and it worked great! Also used the "starter bump" trick with a breaker bar, after removing the coil wire from the distributor cap, and it came loose on the first try, works like a charm I must say! Replaced the belts, did an oil change while I was under there, no leaks now on my '94 Sentra, which has 116K on the original engine. YAY !!!

I just picked up a set of (4) Monroe Sensa-Trac struts ... I am going to replace the struts all the way around, so I will be starting that fun project today, if it doesn't rain.

You guys are great! Thanks for all your help, I really appreciate it !!!

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#165 Old Oct 24th, 2010, 04:24 PM
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I wish I could say that it quit using oil. But it still does, just not quite so much. But it isn't throwing oil out of the engine any more so that's a plus. How did the strut install go? I still need to replace the a/c compressor and the halfshaft, but its cooler now so the a/c can wait til next summer. Going to be interesting to see how many miles it can get on the odometer before it gives out. 223000 miles on it now.
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