Install 2 608 Bearings with the M8 x 35 BHCS, M8 washers and M8 Nyloc nut.
Tighten Bolt all the way down.
Note, there is no washer under the head of the bolt.
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Parts to assemble bearings.
M8 washers on both sides of bearings.
No washer under bolt head.
M8 Washer under nut
3 Assemble double bearing holder onto X end idler.
Assemble the double bearing holder onto the x end idler with 4x M3 x 12 SHCS and washers.
Leave the bearing holder loose at this point.
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Required parts to assemble the double bearing holder.
Bearing holder assembled, take note of orientation.