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200 ENGINE ASSEMBLY
Page 6-37
[213 CH] CAMSHAFT
Description
Refer to Figure 6-42.
The E7 camshaft design uses large journals to
decrease bearing loading and to allow for larger,
more durable cam lobes. In addition, the profile of
the exhaust lobes has been changed (with part
No. 5205) to increase the duration of exhaust
valve opening. Both the camshaft driven gear and
the fuel injection pump driving gear are pressed
onto the shaft.
Figure 6-42 — Camshaft Contours
Special Tools Required
앫
Tappet Holders J 37720-B
앫
Camshaft Removal/Installation Tool J 41461
Inspection
1. Thoroughly clean the camshaft.
2. Inspect the camshaft cam lobes. Replace
the camshaft if cam lobes show evidence of
cracking, pitting or scoring.
To provide increased duration for the exhaust
valve opening, the exhaust lobe profile for cam
part No. 5205 is flatter across the nose portion
compared to traditional MACK cams. Do not
misinterpret this flatter profile design as an
improperly machined or worn lobe. The 5205
cams can be identified by the 3 grooves in the
shaft between the No. 11 and No. 12 lobes. Refer
to Figure 6-43.
Figure 6-43 — Camshaft Identification,
Part No. 454GC5205
3. Inspect the journals. Replace the camshaft if
the journals are scored or worn.
4. Use standard magnaflux inspection
procedures to detect cracks.
MINIMUM ACCEPTABLE CAM LOBE LIFT
Camshaft
Part No.
Exhaust Lobe
Intake Lobe
454GC583,
454GC583A
0.300 inch
(7.62 mm)
0.300 (7.62 mm)
454GC5142
0.300 inch
(7.62 mm)
0.270 inch
(6.86 mm)
454GC5205
0.300 inch
(7.62 mm)
0.280 inch
(7.112 mm)
5-101.bk Page 37 Friday, March 17, 2006 11:05 AM
Summary of Contents for E7
Page 1: ...E7 ENGINE OVERHAUL AUGUST 1997 ENGINE 5 101...
Page 2: ...Page 0 front fr5 Page 0 Friday March 17 2006 11 04 AM...
Page 5: ...E7ENGINE OVERHAUL MARCH 2006 2 5M REP AUGUST 1997 10M MACK TRUCKS INC 1997 ENGINE 5 101...
Page 13: ...ABOUT THIS MANUAL Page ix ABOUT THIS MANUAL front fr5 Page ix Friday March 17 2006 11 04 AM...
Page 15: ...TABLE OF CONTENTS Page xi TABLE OF CONTENTS front fr5 Page xi Friday March 17 2006 11 04 AM...
Page 24: ...Page xx NOTES front fr5 Page xx Friday March 17 2006 11 04 AM...
Page 31: ...200 SPECIFICATIONS Page 2 1 SPECIFICATIONS 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Page 55: ...200 ENGINE REMOVAL Page 3 1 ENGINE REMOVAL 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Page 58: ...Page 3 4 NOTES 5 101 bk Page 4 Friday March 17 2006 11 05 AM...
Page 90: ...Page 4 32 NOTES 5 101 bk Page 32 Friday March 17 2006 11 05 AM...
Page 91: ...200 BENCH PROCEDURES Page 5 1 BENCH PROCEDURES 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Page 158: ...Page 5 68 NOTES 5 101 bk Page 68 Friday March 17 2006 11 05 AM...
Page 159: ...200 ENGINE ASSEMBLY Page 6 1 ENGINE ASSEMBLY 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Page 240: ...Page 6 82 NOTES 5 101 bk Page 82 Friday March 17 2006 11 05 AM...
Page 272: ...Page 8 10 NOTES 5 101 bk Page 10 Friday March 17 2006 11 05 AM...
Page 273: ...200 TROUBLESHOOTING Page 9 1 TROUBLESHOOTING 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Page 292: ...Page 9 20 NOTES 5 101 bk Page 20 Friday March 17 2006 11 05 AM...
Page 293: ...200 APPENDIX Page 10 1 APPENDIX 5 101 bk Page 1 Friday March 17 2006 11 05 AM...
Page 295: ...200 APPENDIX Page 10 3 E7 LUBRICATION SYSTEM 5 101 bk Page 3 Friday March 17 2006 11 05 AM...
Page 296: ...Page 10 4 200 APPENDIX E7 COOLING SYSTEM 5 101 bk Page 4 Friday March 17 2006 11 05 AM...
Page 297: ...INDEX Page 11 1 INDEX INDEX FR5 Page 1 Friday March 17 2006 11 04 AM...
Page 302: ...Page 11 6 NOTES INDEX FR5 Page 6 Friday March 17 2006 11 04 AM...
Page 303: ...E7 ENGINE OVERHAUL PRINTED IN U S A ENGINE 5 101 MACK TRUCKS INC 1997...