Service Bulletin

Table Of Contents

Customer Service Bulletin

Commercial Business Group

General Product Information Date: January 24, 2006

Model/Serial Range: Model Numbers: Serial Numbers:

00000–99999 (All) 90101-26009999 (All)

Subject: Oil Leak at the Rear 4WD Axle Wheel Ends

Some 4WD machines may exhibit an oil leak at one or both wheel ends of the rear axle.

This leak will appear as a slight weeping at the upper pivot area and/or lower pivot area

of the final drives (see picture). This situation is created by the Vent that can allow a

slight pressure to build inside the axle housing (from temperatures generated during

operation). This type of oil leak causes the surrounding surface to become damp and

allows dirt and debris to collect. Unless the leak is significant enough to form a drip,

periodic cleaning is all that is required.

If a drip forms, the condition can be improved through a minor internal vent modification.

Simply pry the top Cap from the Vent and replace the rubber diaphragm with a Foam

Insert (110-4815). Snap the top Cap back into place and check that the axle oil level is

correct (see Operators Manual).

Possible oil leak areas

1. Pry off top Vent

Cap.

2. Remove and

discard rubber

diaphragm.

3. Insert Foam Filter

Insert (110-4815).

4. Snap top Vent Cap

back into place.

For additional information or to obtain parts, contact your local authorized Toro

Commercial Products Distributor.