Table 2-8. Vibration System Troubleshooting - Continued.
TEST OR INSPECTION
VIBRATOR RUNS CONTINUOUSLY.
Check if vibrator runs with screed vibrator switch off (solenoid valve open and dumping to reservoir).
Replace/repair faulty vibration solenoid valve per paragraph 2.47.
AUXILIARY HYDRAULIC SUPPLY TO VIBRATION AND CYLINDER CIRCUITS FAULTY.
Hydraulic oil can be moderately flammable and can be an irritant to skin, eyes, and
respiratory system. Avoid prolonged exposure. Eye protection and rubber gloves
must be worn when working with hydraulic oil.
Open right access door per TM 5-3895-373-10. Remove right access cover per TM 5-3895-373-10.
With paving machine off, check right hand auxiliary hydraulic system suction line at port (1) using
hand pump per TM 9-4940-468-14.
Replace or repair components (auxiliary hydraulic system suction hoses, lines, and fittings per
paragraph 2.54, hydraulic reservoir components per paragraph 2.53) as necessary.
The following test requires use of a hydraulic system tester. Install tester in-line at
flow test point indicated by each individual test per TM 9-4940-468-14. Make sure
ratings of all fittings and hoses used are adequate for maximum pressures and flows
Install hydraulic system tester at port (2) for flow test per TM 9-4940-468-14. Check flow at right
hand auxiliary hydraulic pump discharge port (2).
If flow rate is less than 5.5 gpm (21 l/min) at 2000 psi (13 790 kPa), replace/repair right hand
auxiliary hydraulic pump per paragraph 2.42.