TM 5-3895-373-34
Table 2-8. Vibration System Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5.
AUXILIARY VIBRATION PUMP HYDRAULIC SUPPLY FAULTY.
NOTE
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 being tested.
WARNING
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.
Step 1.
Open right access door per TM 5-3895-373-10. Remove right access cover per TM 5-3895-373-10.
Install hydraulic system tester at port (1) for flow test per TM 9-4940-468-14. Check for flow at
vibration relief valve port (1).
If flow is present at 2000 psi (13 790 kPa), replace/repair vibration relief valve per TM 53895-373-
20.
Step 2.
With paving machine off per TM 5-3895-373-10, check hydraulic vibration system suction line at (2)
using hand pump per TM 9-4940-468-14.
Replace or repair components (hydraulic vibration system suction hoses, lines, and fittings per
paragraph 2.54, hydraulic reservoir components per paragraph 2.53) as necessary.
Step 3.
Install hydraulic system tester at port (3) for flow test per TM 9-4940-468-14. Check maximum flow
rate at hydraulic auxiliary vibration pump discharge port (3).
If flow rate is less than 3.5 gpm (13 {/min) at 2000 psi (13 790 kPa), replace/repair hydraulic
auxiliary vibration pump per paragraph 2.43.
Step 4.
Disconnect hydraulic system tester per TM 9-4940-468-14. Install right access cover per TM 5-3895373-10.
Close right access door per TM 5-3895-373-10.
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