Gravely Promaster 300 Service Manual page 34

4. Remove hub (remove key and spacer if needed).
5. Remove the cotter key and loosen the castle nut a
couple of turns. Use a gear puller to brake the hub
loose. Remove castle nut and washer, slide hub off
(remove key if needed).
Installation
Reassemble in reverse order.
NOTE: Use steel wool or fine sand paper to remove
any rust or paint from the axle taper and wheel hub
bore taper.
1. Mark end of axle to indicate where cotter key hole
is located.
2. Install key and slide hub on axle.
3. Install washer and castle nut.
4. Using a torque wrench tighten the castle nut to
150 ft-lbs (203 Nm). Stop and check for line up of
castle nut and cotter key hole. If needed increase
the torque to line up the hole.
CAUTION: Never loosen castle nut to align
hole.
5. Install cotter key, wheel and lug bolts.
6. Check tire pressure.
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