Removal - Hudson 1953 Jet Mechanical Procedure Manual

29 ENGINE
Valve guides can be properly installed with
the J-883-A Valve Guide Installer using pilot
I-883-10. The installer consists of the driven han-
dle, stop collar and a pilot calibrated to limit the
depth to which the guides are driven. The valve
guides are inserted to a depth of 1-9/32" from the
top of the valve seat to the top of the guides for
both intake and exhaust valve guides. (See Figure
8.)
FIGURE 8
FIGURE 9
INTAKE
A - 45°
B - 1.831"
C - .1135"
D - .0495"
E - .083"
F - .016"
G - .054"
H - 1-11/16"
EXHAUST
45°
1.561"
.1525"
.0496
.103"
.008"
.075"
1-3/8"
Before starting to reface the valve seat, be sure
that the stone is clean and true. Touch the valve
seat lightly with the stone to avoid chatter o f the
grinder. Grind seat until all pits are removed and
the seat is clean.
Seats should be held to a width of from 1/16" to
3/32" inch. When the seat is too wide, difficulty is
encountered trying to obtain a good seal. If a wide
seat is found, grind the edge with a 20° stone until
proper seat width is obtained. If necessary, an
additional cut can be taken at the port end with a
75° stone if the valve does not contact the valve
seat within the gauge line limits. (See Figure 9.)
VALVE TAPPETS
Valve tappets are of the mushroom rotating
type with self-locking tappet adjusting screws.
The valve tappets must be removed from the
bottom of the cylinder block. To accomplish this,
the oil pan, and camshaft must be removed, while
holding the valves wide open with J-1612-3 tappet
and valve holders.
Valve tappets should be carefully inspected f or
pitting and scratches on t he mushroom faces that
might damage the cam lobes. Replace any tappets
that are pitted or scratched.
If the valve tappet guides are worn excessively,
the tappets should be removed, the guides reamed
and oversize tappets installed. Tappets available
are standard, .002", .004" and .010" oversizes.
PISTONS, RINGS &
CONNECTING RODS

REMOVAL

Pistons and connecting rods must be removed
through the top of the cylinder block. The oil pan and
cylinder head must, therefore, be removed prior to
servicing pistons and connecting rods.
NOTE: Before rods and pistons are removed, t he
ridge must be removed from the upper cylinder
walls with a Ridge Reamer. This is necessary to
prevent cracked or broken piston lands or piston
rings.