1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
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3 - 30 ENGINE<br />
2. Remove flywheel and crankshaft oil thrower. See<br />
"Flywheel Removal".<br />
3. Remove oil pan and (oil pan baffle, 8 Cylinder).<br />
4. Remove vibration dampener lock screw, lock and remove<br />
vibration dampener using Puller J-676-C, Figure 31.<br />
DO NOT HAMMER DAMPENER to remove.<br />
5. Remove gear case cover and camshaft plunger (8<br />
cylinder).<br />
6. Using puller J-471, remove crankshaft gear, Figure 38.<br />
NOTE: It is necessary to remove the camshaft gear and<br />
timing chain on the 6 cylinder engine before crankshaft<br />
gear can be removed.<br />
7. Remove connecting rods and pistons.<br />
8. Remove front and rear main bearing caps with Pull er<br />
J-2955, remove balance of bearing caps.<br />
9. Using a rope sling and chain fall, remove the crankshaft.<br />
VIBRATION DAMPENER<br />
Regardless of the number of cylinders, the crankshaft of<br />
a gasoline engine does not rotate at a uniform or constant<br />
speed. This variation in the speed of rotation may be accounted<br />
for chiefly by the intermittent power impulses .and<br />
results in what is termed torsional vibration, a momentary<br />
winding and unwinding of the crankshaft.<br />
To eliminate this as far as is possible the vibration<br />
dampener whose inner and outer members are separated by<br />
rubber facings, is mounted at the front end of the crankshaft.<br />
Through the flexing of this disk the momentum of the<br />
outer member of the vibration dampener opposes the accelerated<br />
and decelerated rotation of the crankshaft.<br />
REMOVAL:<br />
1. Remove the vibration dampener lock screw, lock.<br />
2. Using Puller J-676C, Figure 34, remove vibration<br />
dampener assembly.<br />
NOTE: Do Not Hammer on dampener to remove.<br />
NOTE: Before replacing crankshaft, check condition of<br />
crankshaft journals and pins, bearings, and bearing clearances.<br />
Clean the oil pan and screen and blow out oil lines.<br />
To Install, reverse procedure of removal, check the<br />
information contained under "Main Bearings, Connecting<br />
Rods, and Pistons; Remove and Replace Engine; Remove<br />
an d Replace Clutch; Remove and Replace Timing Gears or<br />
Timing Chain and Gears, Vibration Dampener Installation,<br />
Flywheel Installation and Clutch and Transmission Installation."<br />
NOTE: On 8 cylinder engines, before Installing the flywheel<br />
to the crankshaft, check to make sure that lower<br />
half oil retainer fits squarely and tightly against the upper<br />
half retainer. Also make sure that gaskets are in good<br />
condition.<br />
Screw holes in cap mounted oil retainer are elongated<br />
to permit it to be squarely contacted with the<br />
upper retainer. If contacting faces are nicked, Install<br />
new retainer as a gap or other discontinuity of contact<br />
will permit loss of oil.<br />
FIGURE 34<br />
NOTE: Should the dampener be disassembled to replace<br />
the rubber facings be sure that the center punch marks<br />
line up and that punch marks are opposite the key way in<br />
hub in order to retain proper balance.