Case 570NXT, Service Manual

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INTRODUCTION
1. Prior to adding dye, connect the black light to the
machines battery and investigate suspected areas.
2. Once suspected leak areas are found, attempt to
trace the leak completely to the origin.
NOTE: At the origin, the leak should be the brightest
in color.
3. After confirmation of the suspected leak, thoroughly
clean the area of the leak to remove any existing flu-
ids. Recheck the area with the black light to assure
the area is clean. Good cleaning is important for the
following reasons:
•
Fluids captured by threaded joints or other
cavities will continue to show signs of leakage
unless completely clean.
•
Casting surfaces can hold residual oil.
RCPH10TLB245ACL
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4. Use the entire contents of the bottle of dye in the
system/systems of the suspected leak.
5. Run the unit for 5 to 10 minutes and cycle through
suspect system functions to ensure that the dye is
available to all possible leak points.
NOTE: The hydraulic oil should be heated to 71 °C
( 160 °F ), engine at normal operating temperature,
and transmission should be in the normal operating
range on the gauge.
6. Use a clean cloth and wipe the dipstick or the inside
surface of the filler tube on each of the 3 sumps.
7. View traces of dyed fluid on the cloth under the black
light to ensure good samples.
8. Use these 3 samples as your baseline when inspect-
ing the unit with the black light.
NOTE: High hour engine oil can reduce the effec-
tiveness of the dye. In this event change the oil.
9. Avoid common errors.
•
Fan airflow blowing leaking fluid.
•
Gravity pulling leak paths down.
•
When paint at a joint is not broken, the joint is
not leaking.
NOTE: It is not necessary to change oils after this
check.
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