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Table 2-2. Track Tension Troubleshooting - Continued | Up
TM-5-3895-373-34 Paving Machine Bituminous Material Crawler Mounted Diesel Engine Driven Manual | Next
Table 2-3. Propulsion System Troubleshooting |
TM 5-3895-373-34
Table 2-2. Track Tension Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3.
AUXILIARY HYDRAULIC SUPPLY TO VIBRATION AND CYLINDER CIRCUITS FAULTY.
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 center top right and center top left access doors per TM 5-3895-373-10. Open right access
door per TM 5-3895-373-10. Remove right access cover per TM 5-3895-373-10. With paving
machine off per TM 5-3895-373-10, check right hand auxiliary hydraulic system suction lines at (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.
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.
Step 2.
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). Measure flow rate at 2475 -25 psi (17 066 :172
kPa) with engine at 2640 :40 rpm.
If flow rate is less than 5 gpm (19 l/min) at 2475 ±25 psi (17 066 ±172 kPa), replace/repair right
hand auxiliary hydraulic pump per paragraph 2.42.
If flow rate is at least 5 gpm (19 l.min) at 2475 ±25 psi (17 066 +172 kPa), replace valve and
cylinder flow divider per paragraph 2.55 and repair per paragraph 2.49.
Step 3.
Disconnect hydraulic system tester per TM 9-4940-468-14. Reconnect all hydraulic lines. Install
right access cover per TM 5-3895-373-10. Close right access door per TM 5-3895-373-10. Close
center top left and center top right access doors per TM 5-3895-373-10.
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