Progressive Turf Equipment SDR 90 - Manual (Page 21)

21
ASSEMBLY OF SPINDLE:
Only use a press that has the ram and bed 100% square to each other. If bearings
are not square in housing, bearings will wear out prematurely. Press on outer race
when inserting into hub and press on inner race when installing on spindle.
If bearings are being changed, be sure to
check bearing spacer for wear. If wear
is noticed, insert new spacer.
This is
critical because if spacer is short by only
.
010” , t he t op bear i ng wi l l s t ar t t o bi nd
and will result in premature failure.
Bearing with seal and shield
combination will be pressed into the
blade side of the hub first with the seal
side facing out.
Next, set spindle on
press bed, install dirt shield and shim
first (as per diagram) set hub, bearing
end down, onto spindle. You must use a
tube (Note: both ends must be square)
which will slide over spindle and press
on inner race of bearing, until seated
against shim.
Insert bearing spacer tube with
hole end up. Set remaining bearing with shield side up, open side on first, onto
spindle. Press on inner race (this bearing will be a loose fit in the hub so it will seat
itself properly).
When all parts have been installed on spindle, torque left hand nut to 60 ft-
lbs. and then tighten set screws in pulley. Once the assembly is complete, fill with
quality grease until it can be seen exiting the top bearing. Rotate the housing six
revolutions by hand so the bearings will have the grease worked into them, and at
the same time check for free movement. The assembly is now ready for installation
into the mower deck.