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Changing the oil pump?

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ThUnDaKaT85

15+ Year Contributor
82
0
Feb 5, 2004
Houston, Texas
well, i finally got my new oil pump. i dont have access to air tools and need to get my crank sprocket off. any suggestions? or are there any write ups anywhere on changing an oil pump?
 
Its a straight foward job. Make sure you take off the the oil pump cover and gears and pack it with vasoline and engine assembly lube to prevent a early failure.
 
If you have access to a Checker or other auto parts store, you can actually rent tools. Having an impact wrench is pretty helpful when it comes to taking the crank bolt out. However, it is absolutely possible without the impact. You can wedge a screwdriver or similar between the ground and the sprocket teeth to prevent it from turning. Just be careful as to not mar the peaks and valleys of the teeth. Good luck!
 
ok, call me a noob for this, but does anyone happen to have a pic of where i need to pack the oil pump with vaseline?
 
All pictures from vfaq.

So this is what the front cover looks like, just without sprockets on it.

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The reverse side looks like this. Notice the balance shaft on the left:

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When you unbolt the oil pump rear cover, it will look like this:

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So basically, just pack all the area between the two gears.

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You can use Vaseline, white grease, moly lube, or similar.

You basically want something thick enough to stay put until you turn the engine over for the first time to prime the pump.

Good luck!
 

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No prep really. But you could replace the seals for example.

You can pack the oil pump, but it's actually hard to prime that way in my experience. I'd rather just put assembly lube on the shafts, not pack it completely, and prime it with a drill before installing the t-belt.

Another way to take the crank sprocket off is to put a 1/2" breaker bar in the bolt head, or a proper socket on the bolt, wedge the bar against the chassis somewhere and support it with your foot so that it can't pop off, while someone bumps the starter. Don't kill yourself. You could also leave the wheels on the ground and tranny in gear to stop the crank from turning, but there's not much room to work that way. People have also jammed rope in the combustion chamber to stop the crank from turning. I prefer the starter trick, if I didn't have an impact wrench.
 
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