DESCRIPTION AND OPERATION
Page 47
The exhaust rocker arm has two adjusting
screws. The adjusting screw located at the push
rod end of the rocker arm adjusts engine brake
plunger lash. The adjusting screw located at the
valve end of the rocker arm adjusts exhaust valve
lash.
The hydraulic actuator consists of the
following:
—
Plunger and spring located in the lower
chamber
—
Ball check valve located on top of the
plunger and spring assembly
—
Control piston and spring located in the
upper chamber
Solenoid De-Energized
— A constant supply of
oil is fed to the actuator to fully lubricate all valve
train components. Spring tension holds the
control piston down to unseat the check valve
ball. With the check valve ball unseated, oil flows
freely into and out of the plunger chambers.
When the engine brake solenoid is not energized,
the plunger assembly can move up and down
freely inside the actuator bore, but spring tension
keeps the plunger seated against the lower snap
ring. This free movement of the plunger provides
the necessary clearance between the bottom
face of the plunger and the exhaust valve
actuating pin during normal engine operation.
45
Figure 45 — Hydraulic Actuator Cut-Away View
1. Cover
2. Retaining Ring
3. Control Piston Spring
4. Control Piston
5. Control Oil Port
(Reference Only, Not
Actual Location)
6. Check Valve Assembly
(Check Ball Seat at Top)
7. Leak Down Port
8. Retaining Ring
9. Check Valve Ball
10. Plunger
11. Plunger Spring
5-111.bk Page 47 Monday, July 10, 2006 2:26 PM
Summary of Contents for ASET AC
Page 6: ...TABLE OF CONTENTS Page iii TABLE OF CONTENTS 5 111 bk Page iii Monday July 10 2006 2 26 PM...
Page 14: ...INTRODUCTION Page 1 INTRODUCTION 5 111 bk Page 1 Monday July 10 2006 2 26 PM...
Page 23: ...Page 10 NOTES 5 111 bk Page 10 Monday July 10 2006 2 26 PM...
Page 96: ...COMPONENT LOCATOR Page 83 COMPONENT LOCATOR 5 111 bk Page 83 Monday July 10 2006 2 26 PM...
Page 99: ...Page 86 NOTES 5 111 bk Page 86 Monday July 10 2006 2 26 PM...
Page 100: ...TROUBLESHOOTING Page 87 TROUBLESHOOTING 5 111 bk Page 87 Monday July 10 2006 2 26 PM...
Page 140: ...MAINTENANCE Page 127 MAINTENANCE 5 111 bk Page 127 Monday July 10 2006 2 26 PM...
Page 153: ...Page 140 NOTES 5 111 bk Page 140 Monday July 10 2006 2 26 PM...
Page 383: ...Page 370 NOTES 5 111 bk Page 370 Monday July 10 2006 2 26 PM...
Page 479: ...Page 466 NOTES 5 111 bk Page 466 Monday July 10 2006 2 26 PM...
Page 480: ...SPECIFICATIONS Page 467 SPECIFICATIONS 5 111 bk Page 467 Monday July 10 2006 2 26 PM...
Page 505: ...Page 492 NOTES 5 111 bk Page 492 Monday July 10 2006 2 26 PM...
Page 513: ...Page 500 NOTES 5 111 bk Page 500 Monday July 10 2006 2 26 PM...
Page 519: ...Page 506 NOTES 5 111 bk Page 506 Monday July 10 2006 2 26 PM...
Page 520: ...APPENDIX Page 507 APPENDIX 5 111 bk Page 507 Monday July 10 2006 2 26 PM...
Page 528: ...INDEX Page 515 INDEX Index fm Page 515 Monday July 10 2006 2 48 PM...
Page 535: ...Page 522 NOTES Index fm Page 522 Monday July 10 2006 2 48 PM...