Hudson 1953 Super Jet, Руководство по механическим процедурам

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4. Cylinder head cap screws should be tightened
in the sequence illustrated in Figure 7.
FIGURE 7
CAUTION: Always clean out threads in cylinder
block before installing cylinder head. If threads
in the block are corroded or filled with dirt, an
incorrect torque wrench reading will be indicat-
ed, as a percentage of the torque will be absorbed
by the threads. Apply "Hudson Perfect Seal Gas-
ket Paste" to threads to facilitate tightening of
the cap screws to the proper tension.
VALVE SYSTEM
VALVE TAPPET ADJUSTMENT
1. Remove right front wheel.
2. Remove fender side shield.
3. Remove valve covers and breather. Adjust
tappets as follows:
Intake .010" hot
Exhaust .012" hot
VALVE REMOVAL
The engine block is of hard chrome alloy iron and
the valves seat directly in the block with no valve seat
inserts required. The following procedure is recom-
mended for removing valves:
1. Drain cooling system.
2. Remove cylinder head. See 'Cylinder Head
Removal", Page 27.
3. Raise car and remove right front wheel and
fender shield with extension.
4. Remove front an d rear valve covers and crank
case breather tube.
5. Compress valve springs and remove s p ring
keepers an d retainers (use tool KMO-484
Valve Spring Lifter).
NOTE: Place corks or wood plugs in valve
chamber oil return holes to prevent valve locks
from dropping through those holes into the oil
pan
.
6. Remove valve s from engine and place them in
proper sequence in a valve rack to assure their
installation on the seats from which they were
removed.
7. Check all valves and replace those badly
burned, warped or cracked.
REFACING VALVES
Remove enough metal to clean up pits and
burns. Grind until a clean metal surface is obtained
to provide a good seal on the seat. Do not grind to
a knife edge at the top of the valve. At least 1/16"
of metal should remain, measured from the upper
edge of the valve seat to the top of the valve shown
at (D), Figure 9. If this thickness of metal does not
remain after grinding, replace the valve.
REFACING VALVE SEATS
Before refacing valve seats, it is necess a r y to
clean all carbon and varnish from valve guides.
Cleaning can be quickly accomplished using a
KMO-122 Valve Guide Cleaner Metal Brush
mounted in a small electric drill. Place a cloth
below the valve guides in the valve chamber to
catch dirt and excess thinner and prevent it from
dropping into the oil pan.
The valve guides must also be checked for exces-
sive wear before attempting to reface the valve
seats. Excessive valve guide wear can usually be
detected by an oily deposit on the under side of the
intake valve heads or in the intake valve ports.
STANDARD CLEARANCES
VALVE GUIDES & VALVE STEMS
INTAKE EXHAUST
Valve Guide Bore .3437 .3437
Valve Stem Diameter .3417 .3407
Clearance .002 .003
When valve guides must be replaced, they may
be removed by driving them out with J-267 valve
guide remover after taking out tappet adjusting
screws.
ENGINE 28