Lubrication; Greasing And Lubrication - Toro 74444 Operator's Manual

Lubrication

Greasing and Lubrication

Lubricate the machine when shown on the Check
Service Reference Aid decal (Figure 32). Grease more
frequently when operating conditions are extremely
dusty or sandy.
Grease Type: General-purpose grease.
How to Grease
1. Disengage the PTO, move the motion control levers
to the neutral locked position and set the parking
brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Clean the grease fittings with a rag. Make sure to
scrape any paint off the front of the fitting(s).
4. Connect a grease gun to the fitting. Pump grease
into the fittings until grease begins to ooze out of
the bearings.
5. Wipe up any excess grease.
Greasing the Front Caster Pivots
Service Interval: Yearly
1. Remove the dust cap and adjust the caster pivots.
Keep the dust cap off until greasing is done. Refer to
Adjusting the Caster Pivot Bearing in Maintenance.
2. Remove the hex plug. Thread a grease zerk into the
hole.
3. Pump grease into the zerk until it oozes out around
the top bearing.
4. Remove the grease zerk in the hole. Install the hex
plug and cap.
Lubricate Caster Wheel Hubs
Service Interval: Yearly
1. Stop the engine, wait for all moving parts to stop,
and remove the key. Engage the parking brake.
1. Seal guard
2. Remove the caster wheel from the caster forks.
3. Remove the seal guards from the wheel hub.
4. Remove one of the spacer nuts from the axle
assembly in the caster wheel. Note that thread
locking adhesive has been applied to lock the spacer
nuts to the axle. Remove the axle (with the other
spacer nut still assembled to it) from the wheel
assembly.
5. Pry out seals, and inspect bearings for wear or
damage and replace if necessary.
6. Pack the bearings with a general-purpose grease.
7. Insert one bearing, one new seal into the wheel.
Note: The seals must be replaced.
8. If the axle assembly has had both spacer nuts
removed (or broken loose), apply a thread locking
adhesive to one spacer nut and thread onto the axle
with the wrench flats facing outward. Do Not thread
spacer nut all of the way onto the end of the axle.
Leave approximately 1/8 inch (3 mm) from the
outer surface of the spacer nut to the end of the axle
inside the nut.
9. Insert the assembled nut and axle into the wheel on
the side of the wheel with the new seal and bearing.
10. With the open end of the wheel facing up, fill
the area inside the wheel around the axle full of
general-purpose grease.
11. Insert the second bearing and new seal into the
wheel.
12. Apply a thread locking adhesive to the 2nd spacer
nut and thread onto the axle with the wrench flats
facing outward.
27
Figure 31
2. Spacer nut with wrench
flats