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Page 9-14
200 TROUBLESHOOTING
CYLINDER BLOCK/CYLINDER HEAD
COOLANT PASSAGES LEAK CHECK —
IN CHASSIS
Refer to Figure 9-4.
1. Drain coolant from the engine.
2. Remove the engine oil pan and valve lifter
covers.
3. Remove the water pump assembly and use
a suitable plate and gasket to seal opening.
4. Remove the upper and lower hoses from the
thermostat housing. Remove the thermostat
housing and thermostat.
5. Secure a suitable plate and gasket over the
thermostat housing opening.
6. Install an air fitting into one of the pipe plug
holes in the coolant manifold.
7. Reinforce the hose connecting the coolant
manifold sections by installing a hose clamp
around the center of the hose to prevent the
hose from rupturing during testing.
8. Remove one of the large pipe plugs from the
water manifold and add hot water to fill the
cooling system. Increase cylinder block
temperature to 150°F (66°C). Loosen one of
the pipe plugs near the top of the cylinder
block to bleed air from the water jacket while
filling. Also open the block drain to allow
water to flow out. This will help warm the
cylinder block.
9. After cylinder block is sufficiently heated,
close block drain and apply approximately
50 psi (345 kPa) air pressure to the air
connection.
Do not exceed 50 psi (345 kPa) air pressure.
Damage to seals or cup plugs may result.
10. Check for coolant leaks at the bottom of
each cylinder bore.
앫
Coolant leaking between the cylinder
sleeve outside diameter and cylinder
block indicates a leaking cylinder sleeve
seat.
앫
Coolant leaking down the inside diameter
of the cylinder sleeve indicates a leaking
head gasket.
Water leaking from the No. 2 or No. 5 cam
bushings or from the No. 2 or No. 5 main
bearings can indicate a breakthrough between
the rocker arm feed passage and the water
jacket.
Refer to the repair procedures in this manual to
correct leaks.
5-101.bk Page 14 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...