Page 6-62
200 ENGINE ASSEMBLY
6. Lubricate threads of the capscrews (2) and
secure the valve covers with the lubricated
capscrews. Torque capscrews to 16 lb-ft
(22 N
폷
m).
Figure 6-72 — Valve Cover Installation
[214 EG] EXHAUST MANIFOLD
Description
In March 1995, a new exhaust manifold with a
thicker mounting flange was introduced into
production on all E7 engines. The mounting
flange on this new “low-boss” exhaust is 3/4 inch
(19.1 mm) thick, compared to the 1/2-inch
(12.7 mm) thick mounting flange on the previous
exhaust manifolds. The new manifolds use
mounting studs which are 60 mm (approximately
2-3/8 inches) long, and copper-plated flanged
nuts without a locking feature.
E7 engines use a new-style exhaust manifold
gasket without the stainless steel insert around
the exhaust port opening as on previous gaskets.
Engines with the older style exhaust manifolds
must continue using the previously used
“armored” exhaust manifold gasket.
If replacing an existing manifold (on engines
manufactured before March 1995) with a low-
boss exhaust manifold and reusing the long studs
(103 mm long), each stud requires a spacer.
When installing a low-boss exhaust manifold on a
pre-1992-1/2 E7 V-MAC engine with injection line
brackets fastened to the exhaust manifold,
spacer and 113 mm studs are required.
The new manifold fastener arrangements do not
require washers or lockplates. When installing
new fasteners on an engine that uses washers
and lockplates, discard those parts and replace
both with the new fasteners.
Installation
Refer to Figure 6-73.
1. Install the 12 studs in position on the
cylinder head.
2. Position six manifold gaskets on the studs.
Exhaust manifold nuts must be installed dry (no
lubrication).
3. Position the exhaust manifold on the
mounting studs and secure with nuts.
Torque the nuts to:
앫
55 lb-ft (75 N
폷
m) for 10 mm nuts
앫
65 lb-ft (88 N
폷
m) for 12 mm nuts
1. Valve cover
2. Capscrew
3. Actuator
4. Riser
200355a
1
2
3
4
5-101.bk Page 62 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...