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200 SETUP AND ADJUSTMENTS
Page 7-5
CHECKING YOKE ADJUSTMENT
Refer to Figure 7-4.
1. Insert a 0.010-inch (0.254 mm) thickness
gauge between the yoke and valve stem, at
both the inboard and outboard locations.
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 the yoke
adjusting screw, as required.
Figure 7-4 — Checking Yoke Adjustment
Inlet Valve Adjustment
Refer to Figure 7-5.
Inlet valve lash clearance is 0.016 inch
(0.406 mm).
1. Place a 0.016-inch (0.406 mm) thickness
gauge between the rocker arm and yoke on
the No. 1 cylinder.
2. Turn the adjusting screw until a light drag is
felt on the thickness gauge.
3. After setting adjustment screw, tighten
locknut. Torque locknut to 40 lb-ft (54 N•m)
using torque wrench J 24407 or equivalent.
Do not allow the adjustment screw to turn.
4. After tightening locknut, recheck valve lash
clearance. Readjust as necessary.
Figure 7-5 — Inlet Valve Adjustment
Exhaust Valve Adjustment
Refer to Figure 7-6.
Exhaust valve clearance is 0.024 inch
(0.610 mm) for engines produced through engine
serial No. 6F in April 1996 and 0.028 inch
(0.711 mm) for engines produced after engine
serial No. 6F in April 1996.
1. Place the proper thickness gauge between
the rocker arm and yoke on the No. 1
cylinder.
2. Turn the adjusting screw until a light drag is
felt on the thickness gauge.
앫
If equipped with a Dynatard engine
brake, use Dynatard valve-lash adjusting
wrench J 37092 to rotate adjusting
screw. Press downward with hand on the
hydraulic lash adjuster while gauging
valve lash. Adjust the lash until a light
drag is felt on the thickness gauge.
3. After adjustment is complete, tighten
locknut. Torque locknut to 40 lb-ft (54 N•m)
using torque wrench J 24407 or equivalent.
Do not allow the adjustment screw to turn.
4. Recheck valve lash clearance after
tightening locknut. Readjust as necessary.
1. Thickness gauge
2. Yoke
1. Thickness gauge
2. Adjusting screw and
locknut
5-101.bk Page 5 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...