Manitowoc National Crane NBT30H-2 Service Manual

HYDRAULIC SYSTEM NBT30H-2 SERVICE MANUAL
2-28 03-20-2019 Control # 613-06
High inlet Vacuum
Caution
High Inlet Vacuum
Causes Cavitation
which can Damage
Internal Pump
Components.
Check fluid temperature.
Low temperature increases
viscosity. High fluid viscosity
causes high inlet vacuum.
Allow system to warm up before
operating.
Inspect inlet screen.
Blocked or restricted inlet
strainer screen causes high inlet
vacuum.
Clean screen/remove blockage.
Check inlet piping.
Kinked or obstruction in inlet
hose.
Remove kink or obstruction.
Hydraulic fluid viscosity above
acceptable limits.
High fluid viscosity causes high
inlet vacuum.
Select fluid with appropriate
viscosity for expected operating
temperature.
Troubleshooting Chart (Continued)
CONDITION ITEM POSSIBLE CAUSE POSSIBLE SOLUTION

Manitowoc National Crane NBT30H-2 Specifications

General

Brand	Manitowoc
Model	National Crane NBT30H-2
Category	Construction Equipment
Language	English