Remove bearing cups from housing by placing a punch in slots provided and drive out. Alternate punch posi- tion from side to side. Take care to prevent housing damage.
Assembly
Bearing cones and cups are designed to mate. It is important to position them so bearing cones taper mates with cup taper.
Lubricate new cups with a light oil. Place them in spin- dle housing with tapers toward the outside.
Seat cups securely with a press or place a large soft drift on the flat lip of cup and drive them into housing until seated against machined shoulder of housing.
Polish areas of shaft and sleeve where seals will seat with emery cloth.
Place bottom bearing cone on spindle shaft so it will mate with cup, and press on until it seats on bottom shoulder of shaft.
Insert shaft and bearing through bottom of housing and seat against cup.
Fill housing cavity with a medium grade grease.
Install top bearing on shaft to mate with top cone and press on shaft until there is room for sleeve.
Apply a thin coat of Permatex to shaft area where sleeve will seat. Install sleeve on shaft and press sleeve and bearing down shaft until all end play is removed (similar to adjusting front wheel bearings on an automobile). Check by spinning spindle. It should turn freely. If it is too tight, hold spindle housing and hit spindle shaft with a lead hammer. Press again until the proper adjustment is obtained.
Be careful not to
IMPORTANT
■Improper positioning of seals can cause seal and spindle damage.
Proper seal installation is important. An improperly installed seal will leak and could cause bearing failure.
Pull the rubber portion of seal back and locate spring.
Lightly coat area of housing where seals seat with Per- matex.
Install bottom seal with spring up toward center of housing.
Place seal squarely on housing and select pipe or tub- ing with an OD that will set on outside edge of seal. A tubing with an OD that is too small will bow seal cage.
Carefully guide seal lip over shaft and carefully press seal into housing. Be careful to prevent distortion to metal cage. Seal should seat firmly and squarely against machined shoulder in housing.
Make sure seal lip did not roll under. Distortion to seal case or damage to seal lip will cause seal to leak. Damaged seals must be replaced.
Carefully press top seal into housing with spring up and away from center of housing. Top seal should be flush with up to 1/16" above housing.
Drill a 3/16" hole 9/32" down from top of sleeve and drive roll pin through sleeve and shaft to hold bearing adjustment.
Lubricate spindle with a medium grade grease. Turn spindle bottom up and vent bottom seal with a dull instrument such as a tongue depressor or letter opener.
Apply grease until it comes out where you are venting seal. Use care to prevent cutting or nicking seal.
Rotate spindle housing on shaft, checking for free movement.
Spindle Installation
Insert spindle up through bottom of mower frame. Posi- tion grease fitting for proper lubrication access and install the four mounting bolts.
PULLEY INSTALLATION
Install pulley onto spindle shaft. Install split taper bush- ing and key. Alternately tighten bolts to 12
Figure 8. Pulley Installation
32695 (Rev. 11/17/2006) | Dealer Service 15 |
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