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#1 Old 02-27-2007, 07:32 PM
 
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oil pump removal question?

How do I get the timing belt crank gear off.

Do I just need to pry on it a little bit or what. I am trying to put my new pump on and I can not get the old one off. Please help. I am trying to get the engine in and running by tomorrow evening. It is a RB20DET in case it is different.
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#2 Old 02-27-2007, 08:13 PM
 
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Mines on my rb25 slides easily off i dont know if it should be doing this but the one on my 20 is in there good but I suppose you can use a pry on it

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#3 Old 02-27-2007, 09:03 PM
 
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I will try it.
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#4 Old 03-02-2007, 05:35 AM
 
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CARL H on a thread in nico clucb said that nissan has a tool for this. Anyone know what it is called?
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#5 Old 03-02-2007, 09:54 PM
 
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i found out the tool was a one off job...sucks because it works so well.

Shift_BOOM. Damnit.

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#6 Old 03-04-2007, 04:45 PM
 
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I may just try to make one anyways. thanks though.
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#7 Old 03-05-2007, 10:52 AM
 
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Use a propane torch and heat the gear up... it should make removal a little easier.

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#8 Old 03-05-2007, 01:22 PM
 
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There are a couple ways of removing the gear. The main difference is wether you need to keep the gear or not. If you need to keep the gear then heating like stated is about the only way. You can also try and make a puller. The second option is you drill several holes into the pulley on a verticle line. Then you take a punch or chisel and break the gear apart. The other method is to drill two holes about 1" deep into the top of the gear. You will then tap the holes and place two bolts into the holes. You can now use a puller to remove the gear. This method also ruins the gear so you will need another one...

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#9 Old 03-06-2007, 05:17 PM
 
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it should also be said that the rb series timing gear does not cross with ANY stateside motor...

Shift_BOOM. Damnit.

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#10 Old 03-07-2007, 11:13 AM
 
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Very true. You can get them from some of the Aussie sites. Last I checked they were running about $150 or so...

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#11 Old 03-07-2007, 03:07 PM
 
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Well are you changing your oil pump??

You can ghetto beat it like I did.
Penetrating lube it like crazy, then beat the SHYT outta the back of the oil pump with a 2X4 and a rubber malet.

But then again my motor was on a engine stand.
Hope your's is too.

"The Strong Move Quiet, The Weak Start Riots"
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#12 Old 03-07-2007, 08:38 PM
 
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The motor is actually on jack stands. Not the safest, but my engine stand is in NC and I have not picked up another one. Also I am changing the pump as soon as I get the gear off. I think I am going to hook up the engine lift for more safety and hit it like Sil240 said. That way it has extra bracing. I also think I am going to attempt to make a removal tool and try to pull it off. hopefully I can get it off, because I really need this thing running. Everything else is ready so this is whats holding me up. Thanks for the comments and If I can make a tool I will post it up so others can make one too.
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#13 Old 03-07-2007, 09:03 PM
 
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i tried to remove the oil pump on my CA by trying to scoot it off while scooting the sprocket off with it...yea that worked fine until my oil pump snapped into 3 pieces...one of those pieces is STILL stuck on my crank since i cant get the sprocket off...
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#14 Old 03-08-2007, 07:59 AM
 
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do not use the pump as a way to remove the sprocket, that is the worst idea evar...something bad will happen and if you dont have a replacement pump you will be sol.
the problem is that the gears are usualy rusted on and generaly need some persuasion to come off...try some pb blaster or some really hard core penetrating lubercant that eats rust.
when you finaly do get the sprocket off make sure to take some really fine sandpaper and smooth the rust down on the crank snout and use a bit of copper antiseize when you reassmeble the pump assmbly.

Shift_BOOM. Damnit.

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#15 Old 03-08-2007, 11:54 AM
 
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It's definetly not the best way to get the sprocket off if your going to keep the pump.

But I was changing my pump and PB blaster and every other lube/anti-rust spray didn't do anything.
Mine was damn near fused on the crankshaft.

Since he's changing the pump if nothing else works go for it.
Just make sure it hit the pump equally and closest to the center.

"The Strong Move Quiet, The Weak Start Riots"
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#16 Old 03-08-2007, 03:56 PM
 
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I am about ready to just try heating it up. It wont hurt the gear or crank will it. I know they get pretty warm when running.
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#17 Old 03-08-2007, 07:57 PM
 
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one guy on skylinesaustralia forum drilled and tapped two small holes and used a puller. I am thinking of doing this, but I am afraid of ruining the gear. any thoughts.
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#18 Old 03-08-2007, 08:00 PM
 
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You can do that, but I feel it ruins the gear. I don't like the idea of drilling holes into something that rotates as fast as this part does. Plus the stress the gear takes is pretty high. I would replace it...

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#19 Old 03-08-2007, 08:29 PM
 
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I am trying to find one. I am going to have to call the nissan dealership tomorrow to see if they have one. I am still going to try the heat thing.
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#20 Old 03-09-2007, 08:08 AM
 
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it kinda late to say this but its a moot point to put a n1 pump on the car if the crank hasnt been collared.

Shift_BOOM. Damnit.

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#21 Old 03-11-2007, 09:48 PM
 
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I just got the gear off. I had to shave some metal off of the gear puller so it could fit behind the gear. Also when I was pulling it off I broke a bolt on the puller. That should tell you how bad it was rusted on. I am going to clean the crankshaft and put the new oil pump on and hopefully have the motor in the car by tuesday. It was a BI*(h.
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