Toro 3000D manual Wheel Bearing Service

Wheel Bearing Service

Disassemble, clean, repack and adjust the rear wheel bearings after each 800 hours of operation. Use No. 2 general purpose lithium base grease containing E.P. ad­ ditive. If operating conditions are extremely dusty and dirty, it may be necessary to perform this maintenance more often.

1.Slightly loosen the wheel lug nuts. Jack up the rear of the machine until the tire is off the floor. Support the ma­ chine with jack stands or blocks to prevent it from falling. Remove the wheel.

2.Remove the hubcap from the end of the wheel spindle.

3.Remove the cotter pin, retainer, jam nut, and washer. Slide the hub off of the spindle shaft.

4.Pull the seal out of the hub.

5.Remove the bearing cones from both sides of the hub assembly. Clean the bearings in solvent. Make sure the bearings are in good operating condition. Clean the in­ side of the wheel hub. Check the bearing cups for wear, pitting or other noticeable damage. Replace worn or damaged parts.

6.If bearing cups were removed from the hub assembly, press new ones into the hub until they seat against the shoulder.

7.Pack bearing cones with grease. Install one bearing cone into the cup on inboard side of the hub assembly. Lubricate the inside of the new lip seal and press it into the hub assembly.

IMPORTANT: The lip seal must be pressed in so it is flush with the end of the hub.

8.Pack inside of hub assembly with some grease (not full). Install remaining bearing cone into the bearing cup.

9.Slide the hub onto the spindle shaft and secure it in place with the tab washer, jam nut, and retainer. DO NOT tighten the nut or install the cotter pin.

10.Adjust preload on the wheel bearings.

A.Tighten the jam nut to 75 – 80 in–lb (86 – 270 Kg– cm) while turning the hub to seat the bearings and remove all end play.

B.Loosen the jam nut until it is away from the tab washer and the hub has end play. Tighten the jam nut to 15 – 20 in–lb (17 – 23 Kg–cm) while rotating the hub.

C.Put the retainer over the jam nut. If the cotter pin hole is not aligned with a retainer slot, remove the retainer and re–orient it until alignment occurs.

D.Insert the cotter pin. Bend both legs of the cotter pin and tap out of the way. Install the cap.

8

	7	9
		10
6		11
		12
		1
		2
5		3
		4
	Figure 4
1.	Cotter pin	7. Inner bearing cup
2. Spindle		8. Wheel hub
3.	Cap	9. Outer bearing cup
4.	Washer	10. Outer bearing cone
5.	Seal	11. Washer
6.	Inner bearing cone	12. Retainer
		13. Jam nut

2WD Rear Axle Page 7 – 4 Groundsmaster 3000/3000–D