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200 ENGINE ASSEMBLY
Page 6-9
[212 CB] Auxiliary Driveshaft
Bushing Replacement
DESCRIPTION
The front and rear auxiliary driveshaft bushings
are identical. Engine lubrication oil passing
through the No. 1 camshaft bushing supplies oil
to the front auxiliary driveshaft bushing. Oil
passing through the No. 4 camshaft bushing
supplies oil to the rear auxiliary driveshaft
bushing. A groove in the rear auxiliary driveshaft
journal, in conjunction with a rifle-drilled hole in
the auxiliary driveshaft and a small oil feed tube,
supplies lubrication to the air compressor.
INSPECTION
1. Using a telescope gauge or inside
micrometer, measure the auxiliary bushing
bores. Take two readings, perpendicular to
each other, in each bore. Record the
readings. Refer to Figure 6-10.
2. Compare readings with the tolerances listed
in the Fits and Limits chart in this manual.
Figure 6-10 — Auxiliary Driveshaft Bushing ID Check
INSTALLATION
Correct installation of auxiliary driveshaft
bushings is very important. If bushings are
misaligned, lubrication oil will not be allowed to
lubricate the auxiliary driveshaft journal. This will
also cause the component lubricated through that
journal to run without lubrication and prematurely
fail.
If the approximately 1.25 inches long (32 mm) oil
feed tube, which connects the oil feed hole in the
rear of the auxiliary shaft to the oil feed hole in the
front of the air compressor crankshaft, is
accidentally lost during air compressor or
auxiliary shaft service work, the compressor will
fail from oil starvation. Also, the loss of oil
pressure resulting from the missing tube can
cause damage and problems in other
components and parts.
Refer to Figure 6-11.
1. Position a replacement bushing (2) against
the side of the block at the rear bushing
bore. Align the oil hole in the bushing with
the hole in the block.
2. Using a dark-colored felt-tip marker, mark
the block and the bushing with a line (1) to
facilitate correct alignment during
installation.
3. Clean the surfaces of the bushing and the
bore. Dry both surfaces with compressed
air.
4. Using camshaft bushing remover/installer kit
J 21428-01 (4) and the appropriate pilot
adapter J 37713 (3), install the bushing.
5-101.bk Page 9 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...