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Oil Pump Tooth Sleeve Question
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TOPIC: Oil Pump Tooth Sleeve Question

Oil Pump Tooth Sleeve Question 10 years, 8 months ago #16430

  • 1M Fan
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I'm putting my engine back together and have a question. I installed the front seal on the pump then put the tooth Sleeve on. The sleeve spins freely on the crankshaft snout. What puts tension the tooth sleeve so it will drive the pump? will it get cinched down when the cam and balance shaft gears are installed? Just want to understand how it works before I put it all set the engine back in the car.
Last Edit: 10 years, 8 months ago by 1M Fan.

Re: Oil Pump Tooth Sleeve Question 10 years, 8 months ago #16445

  • phlip
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When you torque the crank bolt it will lock the drive sleeve to the crank to drive the oil pump. Thats all that holds it and why the torque of the bolt is so critical
--------------
Phil --------
NASA TX
944 SPEC #030

Re: Oil Pump Tooth Sleeve Question 10 years, 8 months ago #16451

  • joeblow
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Red locktight and a proper long arm torque wrench required.

I have seen these come off with disastrous results. It is not only the oil pressure issue but the entire drive belt assembly too. The one I saw took out the crank, two rods, and all the pistons and most of the valves...not good.
Old Racer!

Re: Oil Pump Tooth Sleeve Question 10 years, 8 months ago #16453

  • phlip
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I've never used any loctite on a crank bolt, but you can do what ever you want.
--------------
Phil --------
NASA TX
944 SPEC #030
The following user(s) said Thank You: 1M Fan

Re: Oil Pump Tooth Sleeve Question 10 years, 8 months ago #16463

  • 1M Fan
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Thanks guys, The manual doesn't call for loctite, but I might use a little 243 medium strength. The 271 is a pain to get apart.

Re: Oil Pump Tooth Sleeve Question 10 years, 7 months ago #16532

  • tcomeau
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Just saw this thread. Your oil pump drive sleeve isn't pushed in far enough. No loctite. The factory wants you to slide the crank seal onto the sleeve then install the pair together. Gotta get those teeth all the way into the pump FIRST. Dont force it with the tightening of the crank bolt. Crank bolt goes on at 155 ft lbs. Call me if u don't understand anything here. 619.994.0919
Tim Comeau
SoCal 944 Spec #22 since Feb 2003.
Let's keep building it!
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