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#1
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Front Wheel Bearing Replacement
Hello,
I have to replace a front wheel bearing on my 89 Carrera. In the past I have beat the old race out with a hammer and beat the new one in with heat and a bigger hammer. This time around, im am asking the collective if anyone has a press that will do the job infinitly easier. Many Thanks, Chris 89 Carrera 73 911 E 703-967-2990 cmcfaul@aol.com
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Chris M 73 911 E 89 Carrera |
#2
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When I did this with Matt De Maria, we beat out the old race with a "cove chisel" and a hammer. Used a press to put the new one in.
Doing it myself, I use the "US General" (Harbor Freight) Bearing Race and Seal Driver Kit to place the new bearing (aluminum so I wouldn't use it with a press). You're welcome to borrow.
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Peter (not "Pete") K. 2016 Cayman S 1999 Miata ("SM") race car 2016 Toyota Highlander--tow vehicle/wife's DD 2017 VW GTI SE (DD) Gone and missed: 1992 Miata ("SSM") race car 2009 911 C2S Coupe 2004 Toyota Prius - sold to son's girlfriend 2006 Dodge Durango 2003 Acura MDX 86 Black 911 Coupe race car 86 Gold 911 Targa 82 WineRedMetallic 911 Targa |
#3
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For the rear bearing on a 993 I put the bearing in the freezer overnight then pressed it in with one of the screw driven bearing presses. Much easier getting the new one on than getting the old one off. Perhaps the freezing helps?
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Jim ------ "2017 Central PA SCCA Witch's Rallye - Best Team Costume Award" "2014 Central PA SCCA Witch's Rallye - Best Team Costume Award" White/Green '91 SSM Miata #01 Green '96 911 (993) Carrera #409 Blue '09 911 (997.2) Carrera S Cab Black '15 Yukon XL w/ '98 Trailex (Tow Vehicle) Burnt Orange '75 FJ40 Yellow '19 718 Boxster (wife regretfully sold it to fit 2nd grandchild on the way...) Black '83 911SC Targa (regrettably sold when the second car seat didn't fit) |
#4
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Off track from the thread here, but freezing only helps a bit. Much better is to heat the arm (where the bearing is to be placed) until "goot-n-hot" and then use a piece of PVC pipe shaved to just fit the end in the bearing and it goes RIGHT IN. Thanks for Vicegrip for this.
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Peter (not "Pete") K. 2016 Cayman S 1999 Miata ("SM") race car 2016 Toyota Highlander--tow vehicle/wife's DD 2017 VW GTI SE (DD) Gone and missed: 1992 Miata ("SSM") race car 2009 911 C2S Coupe 2004 Toyota Prius - sold to son's girlfriend 2006 Dodge Durango 2003 Acura MDX 86 Black 911 Coupe race car 86 Gold 911 Targa 82 WineRedMetallic 911 Targa |
#5
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This is actually my third time doing it. Its always a pain. I usually put the bub in the oven but worry I wlll get it too hot. End up beating the hell out of it with a BFH in the end. Getting the old races off is also fun.
Looking for an easier way. Thanks, Chris
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Chris M 73 911 E 89 Carrera |
#6
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I have a press you can use if you don't mind working in my rather cluttered (at the moment) garage.
BB.
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Some say "My car is a Porsche!" I say "My Porsche is a car!" and I drive the hell out of it. '87 Porsche 944; '10 BMW 328i xDrive (her's); '98 BMW 323is (ours) |
#7
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Heating the aluminum make a far larger deferential is size than freezing steel. Heating the hub then gently walking a race or sealed bearing out is a simple, safe method. PVC pipe works or a shop press. Out is less risky than In.
I prefer to clean the socket of dirt , ridges and burrs then heat the hub or arm. I try to hand slide fit and slide the bearing in. Using a press for hubs and the SIR tool for arms to fully seat. Less chance of damage to the new bearing. I have seen a few folks have issues with front hubs that seem to do out of adjustment over and over. A visit to the shop press to firmly seat the races has worked each time. There seems to be a better set from a press than even beating them in. Bounce back perhaps?
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http://vimeo.com/29896988 “Those that can make you believe in absurdities can make you commit atrocities.” Voltaire. "There is grandeur in this view of life...." Darwin. The mountains are calling and I must go. “The earth has music for those who listen” Shakespeare. You Matter. (Until you multiply yourself times the speed of light squared. Then you Energy) “We’ve got lots of theories, we just don’t have the evidence’. |
#8
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I heated the hub with a strong heat gun for at least 30 mins and pounded the old races out. Still waiting for the new parts from Vertex. Ordered on Monday and have not arrived yet. They are usually pretty fast.
If I heat the hub in an oven. How hot should it be? Thanks, Chris
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Chris M 73 911 E 89 Carrera |
#9
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I have a 50 ton press and a bunch of race and bearing adapters. Also have the screw jacks for doing it with an impact, but greatly prefer the press.
Just did the bearings in a couple of cars, including pinion and output bearings in a differential. You're welcome to bring your hubs over if you want to use the press.
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Chris 1987 928 S4 - Turbocharged w/ ~600 TQ/WHP, Front/Rear big brake upgrade, MegaSquirt, and a few other things. |
#10
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Oh, also have an ultrasonic cleaner that I like to run the parts through before assembly, and no problem putting clean parts in the oven here. I did the 928 hubs at 350 for 30 minutes. Even so, the press was needed for installation, but a screw jack style would have worked.
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Chris 1987 928 S4 - Turbocharged w/ ~600 TQ/WHP, Front/Rear big brake upgrade, MegaSquirt, and a few other things. |
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