Section 4 – ADJUSTMENTS & REPAIR
4.5MOWER SPINDLES (Field Serviceable Spindles)
BEARING REPLACEMENT – 48” DECKS
In the event that a spindle bearing requires replacement, the SNAPPER Field Serviceable Spindles have been designed so that no special tools or presses are required.
1. Remove belt. Loosen blade nut and remove. Allow blade bolt, blade washer, blade, and dust shield to drop down out of the spindle housing. See Figure 4.15.
REMOVE NUT | REMOVE BELT |
FROM SPINDLE | |
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REMOVE BLADE
BOLT
FIGURE 4.15
2.Remove spindle pulley from spindle shaft.
3.Locate circular retaining ring on spindle shaft at top bearing. Remove retaining ring. Allow spindle shaft to drop out of housing.
4.Top and bottom bearings are now removable. Pull out on inner race to slide bearing from housing. See Figure 4.16.
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BEARING |
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SEAL UP |
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| BEARING |
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SPINDLE |
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HOUSING |
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INNER RACE |
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BEARING |
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| BEARING SEAL | |
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| DOWN | ||
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SPINDLE |
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SHAFT |
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5.Thoroughly clean all parts removing all old contaminated grease.
6.Install new bottom bearing first.
NOTE: The bearing is sealed/shielded on one side only. The bottom bearing must be installed with the sealed/shielded side DOWN.
7.Insert spindle shaft up through the bottom bearing. Slide spacer down over spindle shaft.
8.Install new top bearing. Install the top bearing with the seal/shield UP.
9.Slide circular retaining ring down spindle shaft until it fully locks into groove on shaft.
10.Place spindle pulley and spacer on top of spindle shaft.
11.Reinstall blade bolt, blade washer, blade and dust shield.
12.Torque blade bolt and nut to 60 to 75 ft. lbs.
IMPORTANT: Spindle housing must be filled with grease before operating mower. Failure to fill housing will cause premature bearing failure.
13.Pump grease into spindle housing until grease purges from vent on housing.
14.After the first 5 hours of operation, grease spindle housing to insure it is full, then every 25 hours.
FIGURE 4.16
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