Hudson 1948 - 1952, Service Manual

Page: 77 / 333

ENGINE 3 - 35
CAMSHAFT
(8 Cylinder)
REMOVAL:
1. Drain cooling system, disconnect radiator hoses and
remove radiator.
2. Remove cylinder head.
3. Remove right front wheel.
4. Remove right fender side shield.
5. Disconnect vacuum pump line, windshield wiper, hose
and fuel pump.
6. Remove distributor.
7. Disconnect oil lines at oil pump and remove oil pump.
8. Remove valve covers and breather pipe. (Disconnect
clamp at transmission housing and bolt at valve cover).
9. Remove coil and bracket.
10. Using valve lifter KMO-484, remove valve keepers and
valves.
11. Remove valve springs, tappet retainer screws, plates,
washers, and lock-washers, tappets and guides.
12. Remove the grille assembly as a complete unit as follows:
(a) Remove 7 hex head sheet metal screws attaching the
upper grille to the fender tie panel and 1 screw at top of
ornament.
(b) Remove the front bumper and grille guard.
(c) Remove screws attaching grille baffles to front fender
extension, 3 each side.
(d) Remove 6 screws attaching lower grille baffle to the
front splash apron, 2 each side and remove grille and
baffle assembly complete.
13. Place a block of wood between oil pan and head of jack,
and raise engine 1-1/2 inches so camshaft will clear front
splash guard upon removal.
14. Remove vibration dampener, screw lock and dampener.
15. Remove dampener key and gear case cover.
16. Align gear markings and remove camshaft gear and
thrust plunger.
17. Remove camshaft and thrust washer.
Remove camshaft slowly and carefully to prevent
damage to camshaft bearings.
CAMSHAFT BEARINGS
(6 & 8 Cylinder)
Replacement camshaft bearings are avail - able through
the service parts department, in both finish reamed and
unfinished. The finish reamed bearings are sufficiently
oversize so that when pressed into place they will be the
proper dimensions, thus eliminating the need for scraping
or reaming. The unfinished bearings have sufficient wall
thickness to permit line reaming where proper equipment is
available for this operation. These bearings should be line
reamed after Installation to a diameter .001" larger than the
individual camshaft journals.
Service replacement camshaft bearings are a press fit of
.0026" to .0055" in cylinder block.
When pressing in new bearings, always Install bearings
with the locating notch at the top.
It is advisable to remove the engine from the car if it is
found necessary to replace camshaft bearings.
CAMSHAFT
(8 Cylinder)
Installation:
1. Use a new fibre thrust washer when Installing camshaft.
NOTE: Use care when Installing the cams ha ft to avoid
damaging bearings or camshaft lifts. Us e a bronze drift
through oil pump, distributor and fuel pump holes to
guide camshaft through bearings
.
2. Install camshaft gear aligning timing marks with crank-
shaft gear. The timing punch mark on the crankshaft
gear must locate between the punch marks of the cam-
shaft gear. Install lock wire through bolt heads and secure.
3. Install gear case cover; remove old gasket, and replace.
(Check end plate gasket and gear cover oil seal).
4. Install dampener spacer, key, dampener, lock and lock
screw, (Use new lock).
5. Install tappets and guides in sequence removed.
NOTE: Tappet guides must be accurately aligned with
cams on camshaft. Position of guides is controlled by the
guide clamps; the inner sides of which should be in full
contact with matching flat surfaces on front face of each
pair of tappet guides within .0015", Figure 42.