![background image](http://html1.mh-extra.com/html/mack/e7/e7_service-manual_3065456248.webp)
Page 7-8
200 SETUP AND ADJUSTMENTS
Special Tools Required
Jacobs feeler gauges:
앫
0.060 inch (1.52 mm) No. 022001
앫
0.080 inch (2.03 mm) No. 018781
앫
0.085 inch (2.16 mm) No. 014177
앫
0.100 inch (2.54 mm) No. 021327
Valve Yoke
Jacobs yokes must be installed on the exhaust
yoke guide pins. Lubricate the guide pin and the
pallet of the yoke with engine oil. Install yoke with
the adjustment screw outboard (toward the intake
manifold side of the engine).
1. Loosen the yoke adjusting screw locknut
and back the screw out several turns.
2. Exert a moderate force on the yoke by
pressing on the rocker arm slipper end. Turn
down yoke adjusting screw until it makes
solid contact with outboard valve stem tip as
sensed by a light drag on the adjusting
screw.
3. Turn adjusting screw an additional 1/6 turn
(60 degrees) clockwise.
A 1/6 turn is equal to one flat on the adjusting
screw locknut.
4. Hold the yoke adjusting screw in this
position while tightening the adjusting screw
locknut. Torque locknut to 33 lb-ft (45 N•m)
using torque wrench J 24407 or equivalent.
CHECKING YOKE ADJUSTMENT
1. To check the yoke adjustment, insert a
0.010-inch (0.254 mm) thickness gauge
between the yoke and valve stem, at both
the inboard and outboard locations.
Refer to Figure 7-9.
2. Exert moderate force on the yoke by
pressing on the rocker arm slipper end. An
equal drag should be felt on both thickness
gauges. If drag is unequal, readjust yoke
adjusting screw.
Figure 7-9 — Checking Yoke Adjustment
1. Thickness gauge
2. Yoke
5-101.bk Page 8 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...