Owner's manual

General Maintenance
135
Model 644E Rev. 8/03
Brake Disk Wear Check
(1000 Hour Intervals)
Check the brake disks for wear every
1,000 hours of operation or yearly.
If the brake disks require service due to
wear, the axle should be checked, serviced and repaired only by experienced
service technicians who are aware of all safety instructions and particular
component features.
A. Front Axle
1. Block all four wheels to prevent any unexpected movement of the vehicle
after the parking brake is disabled.
2. Remove the cover (4) from the cab floor to gain access to the valve plate
under the cab.
3. Attach a remote portable hydraulic pressurizing unit to the park brake
gauge port (5) on the accumulator charge/secondary function valve (6)
located under the cab floor.
13. Brake Disk Inspection
WARNING: BLOCK ALL FOUR WHEELS. Failure to do so
could result in death or serious injury from vehicle roll-away.
1000
P
OH2690
OU0570
OU0741
4
5
6