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replacing tensioner pulley bearings: no more squeak!
well, i didn't see any info on this, so i figured i would put it out there.
i was hearing horrible noises from my idler/tensioner pulleys on my s4, so i decided to replace the bearings. you can get high quality SKF or NSK units from local industrial suppliers for under $10.00 a piece. there are also ceramic versions and all kinds of clearance variants, etc you can get. the bearing dimensions for both tensioner pulleys are the same (P/S and A/C): 40mm OD 17mm ID/journal 12mm width ***the part number is usually 6203 RS. the 6203 is the size and the RS designates the seal type. on NSK bearings it is DU instead of RS. all you really need to remember is 6203 with a seal on each side. here are the two i bought: http://i34.photobucket.com/albums/d1...n/DSC00433.jpg Installation: *the P/S pulley was very tight and was a press in/out fit. be very careful pressing in the new one because you can bend/damage the seal. use a proper size adapter to press the new one in and only press on the face of the outer metal ring. i don't recommend using a socket, but it can be done if you are careful. when using a socket, use an oversized one to drive the bearing in initially (to avoid hitting the seal), then use one that just clears the bore (just under 40mm socket) *the A/C pulley had an internal snap ring and a slightly looser press fit. again, be careful with the seal. it only takes a few minutes to do this and you only have to loosen the belts and unbolt the pulley nuts, which are 17mm and 22mm IIRC. this is also a good opportunity to bead blast and repaint the pulleys. |
hey thanks for the write up man....i'll have to look into that.
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I know I'm bringing this thread back from the dead but I need to replace my bearing too (and the PS pump eventually) but I've been searching for 6203du bearings for a while and can't find anything. I wasn't sure if they were the same bearing but was gonna look into it. All I knew was what was written on the bearing seals. I really appreciate this cause I sure didn't want to buy the pulleys from mazda because they were 60 bucks a peice even with my discount, and no auto parts stores sell them. I'm also a bit drunk and am rambling so ya, thanks.
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Search for "bearing" near your address and call around asking for 6203 sealed bearings. There are lots of industrial supply companies with them.
There is also ebay. I would get the tightest clearance you can while still at a reasonable price. I get some minor vibration from mine and I suspect they have a little too much clearance. |
Take the old bearings to a bearing supplier and ask them to find a suitable replacement.
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I just replaced my tensioner bearings and wanted to contribute to this thread.
As mentioned earlier, you can get this bearing at an industrial supply house. You can also get it at almost any auto parts store. It's used for pulleys, pilot bearings, alternator bearings, and so on. Since it's a very common bearing, they can be obtained from any auto parts store. If you ask them for a 6203 bearing they may not know what you're talking about. A very common use for this bearing is a crankshaft pilot bearing. The bearing may also carry these part numbers: -6203 (sometimes there will be a prefix or a suffix) -9-00090-679-0 (Nachi) -394 25010 331 (IMC) -035-903-221 (SKF) -0680035 (Beck/Arnley) -303SS (timken) This is a list of the vehicles that use the 6203 as a pilot bearing (copied from my parts catalog.) Just go to an auto parts store and ask for a pilot bearing for any of the vehicles listed. Most of the time they'll have SKF or Nachi. Both are good quality bearings. Try to avoid cheap Chinese bearings, such as FIT. Timken bearings are also very good quality but are generally 3-4 times the cost of SKF and Nachi. CHEVROLET LUV PICKUP year Type liter del. asp. vin designation where used position notes 1982 L4 1.8 CARB N N Crankshaft Pilot Bearing 1982 L4 2.2 FI N S Crankshaft Pilot Bearing 1981 L4 1.8 CARB N N Crankshaft Pilot Bearing 1981 L4 2.2 FI N S Crankshaft Pilot Bearing 1980 L4 1.8 CARB N N Crankshaft Pilot Bearing 1979 L4 1.8 CARB N N Crankshaft Pilot Bearing 1978 L4 1.8 CARB N N Crankshaft Pilot Bearing 1977 L4 1.8 CARB N N Crankshaft Pilot Bearing 1976 L4 1.8 CARB N N Crankshaft Pilot Bearing 1975 L4 1.8 CARB N N Crankshaft Pilot Bearing 1974 L4 1.8 CARB N N Crankshaft Pilot Bearing 1973 L4 1.8 CARB N N Crankshaft Pilot Bearing 1972 L4 1.8 CARB N N Crankshaft Pilot Bearing DODGE RAM 50 year Type liter del. asp. vin designation where used position notes 1993 L4 2.4 FI N G Crankshaft Pilot Bearing 1992 L4 2.4 FI N W Crankshaft Pilot Bearing 1991 V6 3.0 FI N S Crankshaft Pilot Bearing 1991 L4 2.4 FI N W Crankshaft Pilot Bearing 1990 V6 3.0 FI N S Crankshaft Pilot Bearing 1990 L4 2.4 FI N W Crankshaft Pilot Bearing HONDA PASSPORT DX year Type liter del. asp. vin designation where used position notes 1996 L4 2.6 FI N 4ZE1 Crankshaft Pilot Bearing 1995 L4 2.6 FI N 4ZE1 Crankshaft Pilot Bearing 1994 L4 2.6 FI N 4ZE1 Crankshaft Pilot Bearing ISUZU AMIGO year Type liter del. asp. vin designation where used position notes 2000 V6 3.2 FI N 6VD1 Crankshaft Pilot Bearing 1999 V6 3.2 FI N 6VD1 Crankshaft Pilot Bearing 1998 V6 3.2 FI N W Crankshaft Pilot Bearing 1994 L4 2.6 FI N E Crankshaft Pilot Bearing 1993 L4 2.6 FI N E Crankshaft Pilot Bearing 1993 L4 2.3 CARB N L Crankshaft Pilot Bearing 1992 L4 2.6 FI N E Crankshaft Pilot Bearing 1992 L4 2.3 CARB N L Crankshaft Pilot Bearing 1991 L4 2.6 FI N E Crankshaft Pilot Bearing 1991 L4 2.3 CARB N L Crankshaft Pilot Bearing 1990 L4 2.6 FI N E Crankshaft Pilot Bearing 1990 L4 2.3 CARB N L Crankshaft Pilot Bearing 1989 L4 2.6 FI N E Crankshaft Pilot Bearing 1989 L4 2.3 CARB N L Crankshaft Pilot Bearing ISUZU I-MARK year Type liter del. asp. vin designation where used position notes 1984 L4 1.8 CARB N B Crankshaft Pilot Bearing 1984 L4 1.8 FI N B Crankshaft Pilot Bearing 1983 L4 1.8 CARB N B Crankshaft Pilot Bearing 1983 L4 1.8 FI N P Crankshaft Pilot Bearing 1982 L4 1.8 CARB N B Crankshaft Pilot Bearing 1982 L4 1.8 FI N P Crankshaft Pilot Bearing 1981 L4 1.8 CARB N B Crankshaft Pilot Bearing 1981 L4 1.8 FI N P Crankshaft Pilot Bearing ISUZU IMPULSE year Type liter del. asp. vin designation where used position notes 1989 L4 2.0 FI T F Crankshaft Pilot Bearing 1989 L4 2.3 FI N L Crankshaft Pilot Bearing 1988 L4 2.0 FI T F Crankshaft Pilot Bearing 1988 L4 2.3 FI N L Crankshaft Pilot Bearing 1987 L4 2.0 FI T F Crankshaft Pilot Bearing 1986 L4 2.0 FI T F Crankshaft Pilot Bearing 1985 L4 2.0 FI T F Crankshaft Pilot Bearing ISUZU PICKUP year Type liter del. asp. vin designation where used position notes 1995 L4 2.3 FI N L Crankshaft Pilot Bearing 1994 L4 2.6 FI N E Crankshaft Pilot Bearing 1994 L4 2.3 CARB N L Crankshaft Pilot Bearing 1993 L4 2.6 FI N E Crankshaft Pilot Bearing 1993 L4 2.3 CARB N L Crankshaft Pilot Bearing 1992 L4 2.6 FI N E Crankshaft Pilot Bearing 1992 L4 2.3 CARB N L Crankshaft Pilot Bearing 1991 L4 2.6 FI N E Crankshaft Pilot Bearing 1991 L4 2.3 CARB N L Crankshaft Pilot Bearing 1990 L4 2.6 FI N E Crankshaft Pilot Bearing 1990 L4 2.3 CARB N L Crankshaft Pilot Bearing 1989 L4 2.6 FI N E Crankshaft Pilot Bearing 1989 L4 2.3 CARB N L Crankshaft Pilot Bearing 1988 L4 2.6 FI N E Crankshaft Pilot Bearing 1988 L4 2.3 CARB N L Crankshaft Pilot Bearing 1987 L4 2.3 CARB N L Crankshaft Pilot Bearing 1987 L4 2.2 FI N S Crankshaft Pilot Bearing 1987 L4 2.2 FI T U Crankshaft Pilot Bearing 1986 L4 1.9 CARB N A Crankshaft Pilot Bearing 1986 L4 2.3 CARB N L Crankshaft Pilot Bearing 1986 L4 2.2 FI N S Crankshaft Pilot Bearing 1986 L4 2.2 FI T U Crankshaft Pilot Bearing 1985 L4 1.9 CARB N A Crankshaft Pilot Bearing 1985 L4 2.2 FI N S Crankshaft Pilot Bearing 1984 L4 1.9 CARB N A Crankshaft Pilot Bearing 1984 L4 2.2 FI N S Crankshaft Pilot Bearing 1983 L4 1.9 CARB N A Crankshaft Pilot Bearing 1983 L4 2.2 FI N S Crankshaft Pilot Bearing 1982 L4 1.8 CARB N N Crankshaft Pilot Bearing 1982 L4 2.2 FI N S Crankshaft Pilot Bearing 1981 L4 1.8 CARB N N Crankshaft Pilot Bearing 1981 L4 2.2 FI N S Crankshaft Pilot Bearing ISUZU RODEO year Type liter del. asp. vin designation where used position notes 2000 L4 2.2 FI N X22SE Crankshaft Pilot Bearing 1999 L4 2.2 FI N X22SE Crankshaft Pilot Bearing 1998 L4 2.2 FI N X22SE Crankshaft Pilot Bearing 1997 L4 2.6 FI N E Crankshaft Pilot Bearing 1996 L4 2.6 FI N E Crankshaft Pilot Bearing 1995 L4 2.6 FI N E Crankshaft Pilot Bearing 1994 L4 2.6 FI N E Crankshaft Pilot Bearing 1994 V6 3.2 FI N V Crankshaft Pilot Bearing w/ BM Trans. 1993 L4 2.6 FI N E Crankshaft Pilot Bearing 1993 V6 3.2 FI N V Crankshaft Pilot Bearing w/ BM Trans. 1992 L4 2.6 FI N E Crankshaft Pilot Bearing 1992 V6 3.1 FI N Z Crankshaft Pilot Bearing 1991 L4 2.6 FI N E Crankshaft Pilot Bearing 1991 V6 3.1 FI N Z Crankshaft Pilot Bearing ISUZU TROOPER year Type liter del. asp. vin designation where used position notes 1991 L4 2.6 FI N E Crankshaft Pilot Bearing 1990 L4 2.6 FI N E Crankshaft Pilot Bearing 1989 L4 2.6 FI N E Crankshaft Pilot Bearing 1988 L4 2.6 FI N E Crankshaft Pilot Bearing 1987 L4 2.3 CARB N L Crankshaft Pilot Bearing 1987 L4 2.2 FI T U Crankshaft Pilot Bearing 1986 L4 2.3 CARB N L Crankshaft Pilot Bearing 1986 L4 2.2 FI T U Crankshaft Pilot Bearing 1985 L4 1.9 CARB N A Crankshaft Pilot Bearing 1984 L4 1.9 CARB N A Crankshaft Pilot Bearing MITSUBISHI MIGHTY MAX year Type liter del. asp. vin designation where used position notes 1994 V6 3.0 FI N H Crankshaft Pilot Bearing 1993 V6 3.0 FI N H Crankshaft Pilot Bearing 1992 V6 3.0 FI N S Crankshaft Pilot Bearing 1991 V6 3.0 FI N S Crankshaft Pilot Bearing 1990 V6 3.0 FI N S Crankshaft Pilot Bearing MITSUBISHI MONTERO year Type liter del. asp. vin designation where used position notes 2000 V6 3.5 FI N R 6G74 Crankshaft Pilot Bearing 1999 V6 3.5 FI N 6G74 Crankshaft Pilot Bearing 1998 V6 3.5 FI N R 6G74 Crankshaft Pilot Bearing MITSUBISHI MONTERO SPORT year Type liter del. asp. vin designation where used position notes 1999 V6 3.0 FI N 6G72 Crankshaft Pilot Bearing 1999 V6 3.5 FI N 6G74 Crankshaft Pilot Bearing MITSUBISHI MONTERO SPORT LS year Type liter del. asp. vin designation where used position notes 1998 V6 3.0 FI N P 6G72 Crankshaft Pilot Bearing 1997 V6 3.0 FI N P 6G72 Crankshaft Pilot Bearing MITSUBISHI MIGHTY MAX SWB year Type liter del. asp. vin designation where used position notes 1992 V6 3.0 FI N S Crankshaft Pilot Bearing MITSUBISHI MONTERO SPORT XLS year Type liter del. asp. vin designation where used position notes 1998 V6 3.0 FI N P 6G72 Crankshaft Pilot Bearing 1997 V6 3.0 FI N P 6G72 Crankshaft Pilot Bearing |
Just did this. Thanks a bunch to the OP and contributors.
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