Navistar INTERNATIONAL DT 466 Service Manual

OIL SYSTEM MODULE A SSE MBLY A ND SECONDARY FILTRATION 291
4. Immerse cooler heat exchanger and test plate
combination into a suitably sized container of
clean tap water (large shop sink).
5. Open coolant valve and allow water to fill coolant
side of the cooler heat exchanger.
Figure 423 Checking cooler heat exchanger for
external leakage
1. Test plate set
2. Air pressure regulator
3. Coolant port
4. Oil port (closed)
6. Connect an air pressure regulator between the
test plate coolant port and the shop air supply.
7. Apply approximately 172-276 kPa (25-40 psi) of
air pressure to the test plate while the assembly
is immersed in water.
8. Observe exterior of cooler heat exchanger and
test plate surfaces for signs of leakage. If test
plate fittings leak, lift out of water, tighten fittings
then continue to look for leaks at cooler heat
exchanger. Air bubbles evident at any external
location indicate a leak from the coolant passage.
Replace the cooler heat exchanger.
Figure 424 Checking cooler heat exchanger
for
external leakage
1. Test plate set
2. Air pressure regulator
3. Coolant port (closed)
4. Oil port
CAUTION: To prevent engine damage, do not allow
water to enter oil side of cooler heat exchanger
assembly.
9. Connect an air pressure regulator between the
test plate oil port and the shop air supply.
10. Immerse cooler heat exchanger and test plate
combination into a suitably sized container of
clean tap water (large shop sink).
11. Apply approximately 172-276 kPa (25-40 psi) of
air pressure to the test plate while the assembly
is immersed in water.
12. Observe exterior of cooler heat exchanger and
test plate surfaces for signs of leakage. If test
plate fittings leak, lift out of water, tighten fittings,
then continue to look for leaks at cooler heat
exchanger. Air bubbles evident at any external
location indicate a leak from the oil passage.
Replace the cooler heat exchanger.
EGES-265-2
Read all safety instructions in the "Safety Information" section of this manual before doing any procedures.
Follow all warnings, cautions, and notes.
© 2009 Navistar, Inc.

Navistar INTERNATIONAL DT 466 Specifications

General

Brand	Navistar
Model	INTERNATIONAL DT 466
Category	Engine
Language	English