WEIGHT 4H8223 - Caterpillar

Illustration 1 g00619839
ASBS solenoid valvesLocation...
Illustration 2 g00617568
Location of the brake valve blockExpected Result:The parking brake solenoid shows a resistance of less than 10.3 Ohms.Results:
Yes - Proceed to test step 2.
No - Proceed to test step 3.Test Step 2.
Apply 24 VDC (battery voltage) to the solenoid (3) .
Check if the core of the solenoid moves with voltage.Photo...
Illustration 3 g00619839
ASBS solenoid valvesLocation...
Illustration 4 g00617568
Location of the brake valve blockExpected Result:The core of the secondary brake solenoid moves when 24 VDC is applied.Results:
Yes - Stop.
No - Proceed to test step 3.Test Step 3. Replace the parking brake solenoid.Remove...Reference: Refer toTroubleshooting, "Another Service Brake System Valve - Remove".Install...Reference: Refer toTroubleshooting, "Another Service Brake System Valve - Install".Parts... Solenoid Valve Parts...Reference: Refer toTroubleshooting, sebp2784, "141-0901 VALVE GP-PRESSURE REDUCING PIN 8PS1-UP. PART OF 153-1755 CONTROL GP-PARKING BRAKE".Expected Result:The parking brake solenoid is replaced.Results:
Repair Complete - Stop.