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S Belt Pulley Bearing Replacement
On Inspection of the pulleys, the two pictured had stiff/rough spots when spun. Prevost said the pulleys themselves are no longer available for my coach. Has anyone replaced these bearings? If so where did you buy the bearings or do you have a part number?
Thanks
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22 Replies
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Any good bearing place will have them try Granger
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just replaced mine, i used NSK EP30BD6227T12DDUKC01
MA6L 908
These are a good quality Japanese bearing
Take Care when removing the retaining bolt in the centre of the bearing, i think its the lower one that is a left hand tread, have a look at the rotation of the pulley before removing the belt, you will see which one rotates anti clock, that one is the left hand thread
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Thanks Dan and Mike!
47inter-
Thanks for the part number ( NSK EP30BD6227T12DDUKC01) and the good tip about the left handed thread on the pulley.
What does MA6L 908 refer to?
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not sure, if you google the number i gave you it will bring up the bearings, im sure there are other manufacturers that will cross reference to that bearing spec
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Install Detroit Diesel upgrade alternator belt tensioner kit #23527060 for early 60 series like mine. Sometimes available on ebay etc for $800 or less.
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Thanks 47inter!
Don-
WOW! Very Cool!
Is it basically bolt on or were modifications necessary? Was your fill tube housing always where it is now, or did you move it over to the lower position to accommodate the auto tensioner?
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Easy bolt on.
Original filler neck wouldn’t work. It was located where the new spring tensioner arm goes.I found DD # 23523134 for cheap used on ebay. That’s what you see in the picture.Rumor has it DD filler # 23517439 will work too. -
Don-
Auto adjust, and looks great!
I looked on ebay and found the kits, for $950. and up. Found a couple online from truck part suppliers for 1k. I may just do bearings for right now, since I have a lot of other stuff, brakes, tires, batteries going on. But down the road this definitely looks like the way to go.
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I up graded mine a few months ago with auto tensioner kit used oil filler and generator vent up grade, all on E-Bay, and have owned it for 5 years, I also replaced all my Idler pulley bearings, I had a total of 6 idlers bearings, 2 sizes When I 1st bought bus.
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Luc, I see this tensioner kit on ebay for $800. Seller is ironwingsales and has 2 of them. Go to ebay and put in the search words “detroit 23527060”.
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Don and Art-
Ok, went to ebay and…I joined the club. Thanks!
Don did you have to do anything special to get the new paint to stick? I like your color coordinated black and teal paint.
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No. Just clean and degrease it good. The ole original paint was still sticking good but was discolored.
If you can’t find a filler cap setup at a reasonable price, some folks add oil via the oil reserve tank.
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Don- Ok, that’s easy enough. Thanks
2000 Featherlite H3-45
2024 Jeep Grand Cherokee
Leesburg, FL -
I got my oil filler from a place in LA That replaced bus engines with new Detroit engines and had a lot of used parts, That was at least 3 years ago and finally put it on. The DN50 breather kit is good to do also with SS hose coming off the top of DN50 and goes to front of engine to new plate for tensioner, The OEM hose for breather is tiny inside new ss hose is way larger inside less chance of plugging up and causing pressure in DN50 to make it leak oil.
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