Rottler F103 Series, Installation Manual, Operation And Maintenance Manual

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Section 6 Maintenance F103/4/5A Manual
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F103/4/5A Inner Spindle Removal
Prior to following these instruction, perform the steps in Upper Housing Disassembly.
IMPORTANT: When removing bearings, bellevilles and spacers, not the direction they come off
for correct reassembly.
The driven pulley and inner spindle adjustment nut must be in place before continuing. Remove the LEFT
HAND THREAD throwback ring (6305D) from the bottom of the outer spindle.
Note: If the driven pulley and inner spindle adjustment nut are not in place the inner spindle will
be able to fall out of the outer spindle.
While supporting the inner spindle from the bottom, remove the inner spindle adjustment nut and driven
pulley from the top.
The inner spindle is now free to be removed from the bottom. This spindle is precision fit into the outer
spindle, it may be necessary to tap the top of the inner spindle with a soft face mallet to get the spindle to
drop out.
Note: Be sure of the thrust direction of the bearings on reassembly.
Reassemble in the reverse order.
Inner Spindle Angular Contact Bearing Replacement
Prior to following these instruction, perform the steps in Upper Housing Disassembly and Inner Spindle
Removal.
Loosen the three (3) Allen head set screws on the shoelock nut (6116F).
Loosen the shoelock nut and slide off of the top of the spindle.
Note: Be very careful not to damage the threads when sliding nuts, bearings and sleeves off the
top of the inner spindle. These are very fine threads used for the inner spindle adjustment nut.
Remove the top bearing by tapping lightly and evenly on both sides of the bearing. After the bearing is
moved slightly off of the spacer set (6172E) tap the inner race.
Note: Tapping on the outer race can cause it to roll off of the bearings. Generally after removing
the bearings from the inner spindle they are not suitable for re-use.
Remove the spacer set.
Remove the two lower bearings (6116E) set of three (3) the same way as the top bearing.
Stand the spindle on end so that the bearing pack is nearest the floor.
Make sure inner spindle is free of all dirt and debris.
Lightly coat the lower bearing pack area with a light weight #10 oil.
If you have a bearing heater available to you, it is the preferred method of bearing installation. If not,
follow the instructions below.
Slide the two (2) lower bearings onto the inner spindle with the correct bearing thrust direction until they
stop. Use a small brass punch to lightly tap each side of the bearing on the inner race until both bearings
are seated at the bottom of the spindle.
Install the spacer set.