Toro 4100-D service manual Blade Spindle Service, Drive Spindle

Blade Spindle Service

	7				DRIVEN SPINDLE
	8		9	1		2
			10			3
	11		12	130 to 150 ft-lb
				(176 to 203 N-m)
						4
			13
	14
			15			DRIVE SPINDLE
				1
						2
	9			5
	8		16
			17			6
						4
				Figure 16
1.	Lock nut	7.	O-ring		13.	Snap ring
2.	Flat washer	8.	Oil seal		14.	Grease fitting
3.	Driven pulley	9.	Bearing cup and cone		15.	Spindle housing
4.	Spindle shaft	10.	Outer bearing spacer		16.	Spindle shaft spacer
5.	Drive pulley (single shown)	11.	Inner bearing spacer		17.	Spindle shaft
6.	Hydraulic motor mount	12.	Spacer ring

Disassembly (Fig. 16)

1.Loosen and remove lock nut from top of spindle shaft. Remove hardened washer and pulley from spindle. For drive spindle, remove hydraulic motor mount.

2.Remove the spindle shaft from the spindle housing which may require the use of an arbor press. The spindle shaft spacer should remain on the spindle shaft as the shaft is being removed.

3.Carefully remove oil seals from spindle housing tak- ing care to not damage seal bore in housing.

4.Allow the bearing cones, inner bearing spacer and spacer ring to drop out of the spindle housing (Fig. 17).

5.Using an arbor press, remove both of the bearing cups and the outer bearing spacer from the housing.

6.The large snap ring can remain inside the spindle housing. Removal of this snap ring is very difficult.

Assembly (Fig. 16)

NOTE: A replacement spindle bearing set contains two

(2)bearings, a spacer ring and a large snap ring (items 1, 2 and 3 in Fig. 17). These parts cannot be purchased separately. Also, do not mix bearing set components from one deck spindle to another.

NOTE: A replacement bearing spacer set includes the inner spacer and outer spacer (items 4 and 5 in Fig. 17). Do not mix bearing spacers from one deck spindle to another.

IMPORTANT: If new bearings are installed into a used spindle housing, it may not be necessary to re- place the original large snap ring. If the original snap ring is in good condition with no evidence of damage (e.g. spun bearing), leave the snap ring in the housing and discard the snap ring that comes with the new bearings. If the large snap ring is found to be damaged, replace the snap ring.

1.If large snap ring was removed from spindle housing, install snap ring into housing groove. Make sure snap ring is fully seated in housing groove.

Cutting Deck Page 8 -- 18 Groundsmaster 4100--D