DIAMOND LOGIC® ENGINE BRAKE 395
Brake S hutoff Va lve
Figure 622 Disconnecting brake shutoff valve
1. Unclip and disconnect brake shutoff valve
electrical connector from the high-pressure oil
rail and valve cover gasket.
Figure 623 Brake shutoff valve assembly
1. Brake shutoff valve
2. Solenoid
3. Tinnerman nut
2. Remove Tinnerman nut and solenoid.
Figure 624 Brake shutoff valve
3. Remove shutoff valve.
4. Install new O-ring on new brake shutoff valve, and
lubricate O-ring with clean engine oil.
5. Install new brake shutoff valve.
6. Move valve in and out against spring tension to
check for any binding.
7. Place solenoid over the brake shutoff valve.
8. Install Tinnerman nut and tighten to Special
Torque (Table 55).
Figure 625 Connect brake shutoff valve
9. Connect brake shutoff valve electrical connector
to valve cover gasket pass-through connector and
clip harness to high-pressure oil rail.
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.
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