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Page 6-42
200 ENGINE ASSEMBLY
Refer to Figure 6-50.
3. Install thrust washer (4) and secure it in
position with the patch-lock capscrews (3)
and hardened washers.
4. Torque the thrust washer retaining patch-
lock capscrews to 15 lb-ft (20 N
폷
m) using
torque wrench J 24406 or equivalent.
5. Install auxiliary driveshaft gear (2) on shaft
splines (5).
The auxiliary driveshaft and nut threads must be
clean and dry before assembly. Clean the
threads thoroughly with Brakleen
or electrical
contact cleaner. Apply Loctite
271 or 277 to the
threads and install the nut.
6. Install auxiliary driveshaft nut (1) and torque
to 300 lb-ft (407 N
폷
m) using torque wrench
J 23775-01 or equivalent.
Figure 6-50 — Auxiliary Driveshaft Gear Installation
[219 MU] OIL PUMP
Description
The oil pump is a gear-type pump. As the pump
rotates, a vacuum forms on the inlet side, drawing
oil from the crankcase through the oil pump inlet
pipe, and into the pump gear compartment. Oil
then passes through the regulating valve.
Regulated pressure then forces oil through the
discharge port into a drilled passage in the
cylinder block, which leads to the oil filter and
cooler. The oil is then distributed to all main parts
of the engine. If the oil filter is excessively
contaminated, the filter bypass valve will open,
allowing the unfiltered, contaminated oil to
continue through the engine.
Oil fed to the main bearings also travels through
the connecting rods into the piston wrist pins to
lubricate the pistons and cylinder sleeve
surfaces. Oil jets below the pistons, also fed by
the oil pump, spray the bottom of the pistons with
the pressurized oil to assist in removing some of
the heat from the pistons produced by
combustion. Oil is then returned, by gravity, to the
crankcase.
Do not mix standard-ratio oil pumps with fast-ratio
pumps. Damage to the engine will result.
Current fast-ratio oil pumps:
앫
Part No. 315GC459AM, with rear sump
앫
Drive gear, No. 683GB284 (12 teeth)
Former standard-ratio oil pumps:
앫
Part No. 315GC460M, with rear sump
앫
Drive gear, part No. 683GB287 (13 teeth)
Make sure the oil pump is in satisfactory condition
as described in the BENCH PROCEDURES
section of this manual.
1. Nut
2. Auxiliary driveshaft gear
3. Capscrew
4. Thrust washer
5. Shaft splines
5-101.bk Page 42 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...