TM 5-3895-385-23-1
FIELD MAINTENANCE
BITUMINOUS MATERIAL PAVING MACHINE (BMPM)
LOAD SENSE HYDRAULIC PUMP MALFUNCTION
INITIAL SETUP:
Personnel Required
References
91L
WP 0321, Vol 2
Assistant
WP 0449, Vol 3
References
Equipment Conditions
Engine off (TM 5-3895-385-10)
WP 0291, Vol 2
Hydraulic oil cool (TM 5-3895-385-10)
TROUBLESHOOTING PROCEDURES
NOTE
The maintainer should only be using this troubleshooting Work Package (WP) if directed to do so
from another troubleshooting WP. The procedures below assume it has been determined that
there is a loss of hydraulic pressure at the main hydraulic manifold.
Table 1. Load Sense Hydraulic Pump Malfunction Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Loss of hydraulic pressure.
Check hydraulic hoses from the
1. If leaks or damage is found,
hydraulic tank to the load sense
replace damaged hydraulic
hydraulic pump for leaks or pinches
hose (WP 0291, Vol 2).
(WP 0291, Vol 2).
2. If no leaks or damage is found,
proceed to next malfunction.
2. Shut off valve closed.
Check shut off valves on hydraulic
1. If shut off valves are closed,
tank for open condition (WP 0449,
open hydraulic shut off valves.
Vol 3, Figure 6).
2. If shut off valves are open,
proceed to next malfunction.
3. Auger/conveyor motor not
1. Start Bituminous Material Paving
functioning.
Machine (BMPM) engine (TM 5-
3895-385-10).
