How much grease in the front hub?

Since the old single thread was getting too long again. Creating a new forum where you can ask your questions and if you get them answered -please indicate the issue was resolved or not.

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Egz
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How much grease in the front hub?

Post by Egz »

Time for another stupid question: Getting ready to reassemble the front hubs with new bearings. Upon cleaning it out, there was about a pound of grease in the cavity between the front and read bearings. Now I know the bearings need to be greased good, but I'm confused as to the purpose of the grease between them.

Should I pack that center part of the hub with grease in addition to greasing the bearings, or was that just a mistake from a prior owner?

Thanks!
C.Costine
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Re: How much grease in the front hub?

Post by C.Costine »

Bearing manufacturers specify 2/3 full. leave plenty of air space. When the cavity is too full excessive heat is generated resulting in premature breakdown of the grease.
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jrusso07
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Re: How much grease in the front hub?

Post by jrusso07 »

Page 129 of the SPL service manual (available in Tech wiki at http://www.311s.org/PDFs/SPL311ServiceManualSML.pdf) shows a cross section of the assembled hub with a note and illustration on how much grease to apply to the hub.
Joe

1969 SRL311 - Solex
1970 SPL311 - U20 mod
1970 SRL311
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