Service Bulletin

Customer Service Bulletin
Commercial Business Group
Workman
®
2100 Series
Model/Serial Range: Model Number: Serial Numbers:
07253 200000101-200099999
07253TC 200000101-200099999
Subject: Conditions that can cause complaints of poor stopping and/or soft
brake pedal feel.
Sintered metal linings may not provide maximum brake stopping distance performance
at initial set-up or after brake shoe replacement, therefore to maximize braking
efficiency of Sintered Metal linings, it is necessary to “burnish” or “break-in” new linings.
During initial new unit set-up or when ever the brake shoes are replaced, the brakes
require the following procedure.
1. Drive the machine and make several normal stops (not allowing brake lock up) at
approximately 200-ft. (60M) intervals while traveling at 10 to 15 mph (16 to 24 KPH),
allowing the brakes to cool between applications.
2. Finish up the process with several normal stops in reverse which will self adjust the
brake shoe clearance.
Important:
Do not drive machine with the brakes applied, overheating of the linings may result in
glazing of the shoes.
The “break-in” process assures a proper match between the sintered metal brake lining
material and the drum surface. This process transfers very small amounts of the friction
material from the linings to the drums, which improves the brake performance of new
linings.
Several other factors that could result in complaints of poor braking are:
1. Brake cables have excessive free-play and not properly adjusted.
2. Incorrect ground speed adjustment in which the machine operates faster than 18
MPH (29 KPH) specification.
3. Excessive engine run-on where carburetor does not fully close.
If you are experiencing poor braking performance, we would like you to call the Service
Manager at your local distributor. Your distributor can test the braking system to assure
that it is operating properly and adjust it if required.
Ref: vehicles11-05.doc Copyright
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, 1999. The Toro Company