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: Wheel Bearings  ( 1071 )
Full Member
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Wheel Bearings
« : February 22, 2014, 02:17:05 AM »

Greetings Dan,

Hope all is well with you.  Short question, is there a time frame for replacing the wheel bearings on these cop-bikes ?  In my climate they see pretty rough service.+
Thanks in advance.
Motor Doctor
Dan the Motor Man
YaBB God
: 346

Re: Wheel Bearings
« #1 : February 22, 2014, 06:16:51 PM »

In normal police service about 5% of them will need replacement in a 50K mile interval. The ones that do need replacement all have one common element: the motor officer pressure washed his wheels in the bearing area and washed the bearing grease out. The service manual recommends re-packing the bearings at regular intervals but in reality you damage them removing them from the wheels. My suggestion is to check them when changing tires for smooth operation and any play. Anything out of the ordinary, just replace them.
I had a funeral escort rider with a rear wheel bearing that had lost over half the balls (disk side). It had three balls left. He had no money to repair it and rode it another month like that. My advice was to always look for a soft place to land  ;D When he showed up a month later for replacement I said "go play the lottery, God has been smiling on you".
Check the wheels for bearing play also. I've seen old wheels with the bearing hole hammered out and the wheel moves excessively but the bearing are fine. If the wheel binds up when the axle is tightened, it has a missing or a too short spacer. Very common for people to lose the sprocket side internal spacer when changing wheels. If you tighten the axle without that spacer, the bearings will fail in a very short time.
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