DEALER SERVICE Cont’d
Assemble Blade Spindle
IMPORTANT
■Bearing adjustment is set by pressing sleeve against bearing cone until proper adjustment is attained.
■Improper positioning of seals can cause seal failure.
1.Bearing cups and cones are designed to work together. It is important to position them so the bear- ing cone taper mates with bearing cup taper.
2.Lubricate new cups (6) with a light oil. Place them in spindle housing (5) so they will mate with cones (4). Seat cups (6) against machined shoulder of housing with a press or by placing a large drift on the flat lip and driving them into housing.
3.Place bottom bearing cone (4) onto spindle shaft
(8) with taper up. Seat on bottom shoulder of shaft with a press.
4.Insert shaft and bearing cone assembly through bottom of housing (5). Fill housing cavity with a lithium grease of #2 consistency with a MOLY (molybdenum disulfide) additive.
5.Place top bearing cone (4) on shaft (8) to mate with top bearing cup. Install sleeve (3) on shaft and press sleeve and bearing cone onto shaft until all bearing free play is removed and there is a slight drag. Check by spinning spindle. It should turn freely.
NOTE: Be careful not to
6.Proper seal installation is important. An improp- erly installed seal will leak and could cause bearing failure.
7.Pull the rubber portion of seal back and locate spring.
8.Apply a thin coat of lubricant to bottom seal (2) and install with spring up toward center of housing.
9.Place bottom seal squarely onto housing. Select a piece of pipe or tubing with an OD that will sit onto outside edge of seal. A tube that is too small will bow seal cage.
10.To prevent distortion to metal seal cage, carefully press seal into housing. Seal should seat firmly and squarely against machined shoulder in housing.
11.Make sure seal lip did not roll under. Distortion to seal cage or damage to seal lip will cause seal to leak. Damaged seals must be replaced.
12.Apply a thin coat of lubricant to top seal (2) and install with spring facing up away from center of hous- ing. Top seal should be flush with top of housing.
13.Lubricate spindle with a lithium grease of #2 con- sistency with a MOLY (molybdenum disulfide) addi- tive. Vent bottom seal with a blunt edged tool such as a letter opener while filling with grease. Rotate hous- ing on spindle shaft, checking for free movement.
2
3
4
6
7
5
6
4
8
DB3403
2
Figure 10 Spindle Repair
1.Spindle Assembly
2.Seal
3.Sleeve
4.Bearing cone
5.Housing
6.Cup
7.Grease fitting
8.Shaft
20 Dealer Service | MAN0137 (9/14/01) |
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