BRAKE TROUBLESHOOTING AND MAINTENANCE PROCEDURES. (cont)
TEST OR INSPECTION
SERVICE BRAKES NOT ENGAGING CORRECTLY. (cont)
If the adjustment is not correctadjust. Refer to paragraph 9-4
Step 3. Check the control valve for adjustment of screw on plunger.
If the screw is not adjusted correctly, piston will not travel in control valve. Contact Direct Support.
Step 4. Check the relay valves.
If the relay valves are worn, damaged or defective--contact Direct
Step 5. Check the seal on piston in wheel spindle housings.
If the seal is worn, damaged or defective--contact Direct Support.