Page 6-46
200 ENGINE ASSEMBLY
Figure 6-53 — Crankshaft Hub/Vibration Damper
[212 RB] VIBRATION DAMPER
Description
The vibration damper is mounted to the front of
the engine crankshaft hub and secured with six
capscrews. The viscous-type vibration damper
consists of a flywheel (inertia mass) enclosed in a
fluid-tight housing. The vibration damper flywheel
and the housing are separated by a thin layer of
viscous fluid that is not affected by temperature
changes. Any movement of the inertia mass is
resisted by the friction of the fluid, which tends to
dampen excessive torsional vibrations in the
crankshaft.
The vibration damper must be removed
whenever the crankshaft front seal, timing gear
cover or crankshaft are removed.
When removing or handling the vibration damper,
be careful not to damage the housing. Any dents
in the damper outer case may render the
vibration damper ineffective. An ineffective
vibration damper may result in crankshaft cracks.
The vibration damper cannot be repaired.
Inspection
Inspect the vibration damper for dents, nicks or
fluid leaks in the outer housing. If any of the
above are evident, the vibration damper must be
replaced. Due to the close clearances between
the damper housing and its internal flywheel,
dents or nicks may cause contact between the
two components. Fluid loss will deteriorate the
dampening effect of the damper.
Installation
1. Position the vibration damper and drive
pulley on the crankshaft hub.
2. Secure with six mounting capscrews.
Torque screws to 45 lb-ft (61 N
폷
m).
[211 NB] OIL PAN
Description (Isolating Oil Pan
Gasket on E7 Engines)
Reducing oil pan vibration is an important step in
reducing engine noise and ensuring oil pan
integrity, especially at the high power levels of
today’s engines. For this reason, the isolating oil
pan gasket arrangement introduced early in 1994
will gradually be phased into all engine and
chassis models.
Most noticeable among the changes in this
arrangement are the use of a 1/4-inch (6.35 mm)
thick rubber gasket and the elimination of the
reinforcement strip on the pan rail and the belly
bands on the oil pan. The thicker, more
conformable isolating gasket will substantially
improve sealing, especially over a long period of
time.
Serviceability is also improved. When the oil pan
is removed, unlike the fiber gasket, it is not
necessary to scrape the gasket from the cylinder
block and the oil pan. In fact, the new gasket, in
most cases, can be reused.
1. Crankshaft
2. Key
3. Crankshaft hub
4. Vibration damper
5. Pulley
6. Hub capscrew
7. Damper/puller
capscrews
5-101.bk Page 46 Friday, March 17, 2006 11:05 AM
Содержание E7
Страница 1: ...E7 ENGINE OVERHAUL AUGUST 1997 ENGINE 5 101...
Страница 2: ...Page 0 front fr5 Page 0 Friday March 17 2006 11 04 AM...
Страница 5: ...E7ENGINE OVERHAUL MARCH 2006 2 5M REP AUGUST 1997 10M MACK TRUCKS INC 1997 ENGINE 5 101...
Страница 7: ...SAFETY INFORMATION Page iii SAFETY INFORMATION front fr5 Page iii Friday March 17 2006 11 04 AM...
Страница 13: ...ABOUT THIS MANUAL Page ix ABOUT THIS MANUAL front fr5 Page ix Friday March 17 2006 11 04 AM...
Страница 15: ...TABLE OF CONTENTS Page xi TABLE OF CONTENTS front fr5 Page xi Friday March 17 2006 11 04 AM...
Страница 24: ...Page xx NOTES front fr5 Page xx Friday March 17 2006 11 04 AM...
Страница 25: ...200 GENERAL INFORMATION Page 1 1 GENERAL INFORMATION 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Страница 31: ...200 SPECIFICATIONS Page 2 1 SPECIFICATIONS 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Страница 55: ...200 ENGINE REMOVAL Page 3 1 ENGINE REMOVAL 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Страница 58: ...Page 3 4 NOTES 5 101 bk Page 4 Friday March 17 2006 11 05 AM...
Страница 59: ...200 ENGINE DISASSEMBLY Page 4 1 ENGINE DISASSEMBLY 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Страница 90: ...Page 4 32 NOTES 5 101 bk Page 32 Friday March 17 2006 11 05 AM...
Страница 91: ...200 BENCH PROCEDURES Page 5 1 BENCH PROCEDURES 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Страница 158: ...Page 5 68 NOTES 5 101 bk Page 68 Friday March 17 2006 11 05 AM...
Страница 159: ...200 ENGINE ASSEMBLY Page 6 1 ENGINE ASSEMBLY 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Страница 186: ...Page 6 28 200 ENGINE ASSEMBLY Figure 6 26 Flywheel Housing Bolts 5 101 bk Page 28 Friday March 17 2006 11 05 AM...
Страница 240: ...Page 6 82 NOTES 5 101 bk Page 82 Friday March 17 2006 11 05 AM...
Страница 241: ...200 SETUP AND ADJUSTMENTS Page 7 1 SETUP AND ADJUSTMENTS 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Страница 263: ...200 ENGINE INSTALLATION TESTING Page 8 1 ENGINE INSTALLATION TESTING 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Страница 272: ...Page 8 10 NOTES 5 101 bk Page 10 Friday March 17 2006 11 05 AM...
Страница 273: ...200 TROUBLESHOOTING Page 9 1 TROUBLESHOOTING 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Страница 292: ...Page 9 20 NOTES 5 101 bk Page 20 Friday March 17 2006 11 05 AM...
Страница 293: ...200 APPENDIX Page 10 1 APPENDIX 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Страница 295: ...200 APPENDIX Page 10 3 E7 LUBRICATION SYSTEM 5 101 bk Page 3 Friday March 17 2006 11 05 AM...
Страница 296: ...Page 10 4 200 APPENDIX E7 COOLING SYSTEM 5 101 bk Page 4 Friday March 17 2006 11 05 AM...
Страница 297: ...INDEX Page 11 1 INDEX INDEX FR5 Page 1 Friday March 17 2006 11 04 AM...
Страница 302: ...Page 11 6 NOTES INDEX FR5 Page 6 Friday March 17 2006 11 04 AM...
Страница 303: ...E7 ENGINE OVERHAUL PRINTED IN U S A ENGINE 5 101 MACK TRUCKS INC 1997...