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I am doing the chain guides over on my 996. I was pulling the oil pump housing off the front to access the bolts for the guides on bank 2. It did not want to come off. I thought it was hung up on the studs, and was as gently as possible prying it away from the block. Then.... snap - the tube on the housing that goes into the engine block around the pump drive snapped off at the first ring. now I have most of the tube and one ring in the block.
It appears to have pulled about 1/4" out.
I have not yet tried to move the broken piece. not sure how to approach this.
Any suggestions are really appreciated. This is very discouraging...
remainder of the tube in the block - ring stayed behind when it broke oil pump housing housing missing the broken off section.
Sorry. That is bad. You do need to get the broken piece out from the block. I am not really sure how to go about that at this point. That pump goes on very early in the assembly so that the engagement of the drive pin and the oring seal is easily achieved. Maybe send a PM to Charles at LNE.
in the picture, i see the outer tube that sheared off #1, then another circle of steel #2, then the shaft that i think is the end of the IMS #3.
Is that ring #2 around the IMS a bushing? Is it a bearing? Is it actually part of the oil pump housing? Does it rotate or is it fixed? its not clear from any images i can find.
Porschetecc3 x thanks for the idea. Scarry to drill so close to the case. Might be my only hope. As it is so stuck as to break i wonder if it will work. .
Porschetecc3 x thanks for the idea. Scarry to drill so close to the case. Might be my only hope. As it is so stuck as to break i wonder if it will work. .
could you turn a jig that aligns with id of the shaft with drill guides for the screws used to pull part out? Pig that makes sense to you…
It won't be that hard to get out, as porschetech said drill two holes the last one I did I tapped the two holes and used 4MM bolts with a horseshoe bracket that I made out of flat stock to remove the broken piece. Make sure you remove the tensioner to release any pressure on the intermediate shaft.
Thanks all. Encouraging to hear that I am not the only one this happened to. I had not released the tensioner on the IMS. That is the lessons learned here I think.
i filed down the ridge of the broken area to get a flat surface to drill in to
i then Drilled two holes and tapped them for 4mm bolts.
i took a piece of flat bar and made a “u” and tried backing the piece out with nuts on the bolts. No joy. The threads are not strong enough.
so I used a piece of square tube and some other scraps to allow me to use a gear puller to puller the “u”. That worked and it slowly came out.
lessons learned -
Before when taking the oil pump housing off, release all the chain tensioners first. This is why ithink it was so hard to remove.
After all the bolts are out try rotating the housing around the tube to loosen it as you pullit off. Come out straight!
if it breaks….after some moments of calming yourself down…
be very careful in how deep you drill. One of mine went through.
be very careful to go in the center of the remaining piece. One of mine wandered off and i have a slight scratch in the case.
cheapest new pump i can dfifnd is under $400. Which it were less, but on careful inspection of the pump I find wear. I had low oil pressure at idle - about 1.25 bars- so maybe a new one will help. I already put in the 997 relief valve.
08-12-2024, 11:22 AM
996 - how bad is this going to be...
