200 ENGINE ASSEMBLY
Page 6-73
[215 NU, NG & LD]
THERMOSTAT, THERMOSTAT
HOUSING, THERMOSTAT
SEAL AND COOLANT
CONDITIONER
Refer to Figure 6-90.
1. When replacing a seal for any reason,
examine the surface of the thermostat
sleeve, the bore area and the seal to prevent
premature failure of the new seal. A sealing
lip that has been turned back, cut or
otherwise damaged will leak and must be
replaced. The lip faces the front of the
engine.
2. Remove any surface nicks, burrs, sharp
edges and tool marks from the thermostat
sleeve and housing bore area using crocus
cloth.
3. Check to see that replacement seals are
free from any contaminants such as chips,
grit, dust, or any other debris that would
prevent the seal from properly seating in the
thermostat housing.
4. Press the seal into the housing bore with
smooth, uniform pressure using seal
installation tool J 26637-A and driver handle
J 8092.
Tool J 26637-A is designed to regulate
thermostat seal installation depth. The shoulder
on the tool bottoms on the thermostat bore of the
housing to prevent the seal from being installed
too far.
Wherever possible, an arbor press should be
used to apply assembly pressure. Do not apply
hammer blows or uneven pressure directly to
seal surfaces. Precautions should be taken
against cocking of seal throughout the installation
operation. Make sure the seal is not cocked when
installed.
5. Position thermostat (7) in the housing (5)
with jiggle pin or caged ball up.
6. Install a gasket (8) on the housing mounting
surface.
7. Position housing assembly on the coolant
manifold (9) mounting surface.
8. Secure in position with two lower mounting
capscrews (13).
9. Position a check valve assembly (3) in the
coolant conditioner head assembly (2). The
ball end of the check valve must be inserted
first.
10. Position an O-ring (4) in the O-ring recess of
the head assembly.
11. Install head assembly (2) on the thermostat
housing (5) and secure with capscrews (1).
12. Torque capscrews to 25 lb-ft (34 N
폷
m) using
torque wrench J 24406 or equivalent.
13. Apply a light film of oil on the face of the
coolant conditioner filter gasket seal.
14. Install the coolant conditioner filter element
(14). Turn the coolant conditioner filter one
full turn after gasket contacts base. Use tool
J 24783 to tighten.
5-101.bk Page 73 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...