Hudson 1955 Rambler, Technical & Service Manual

Page: 6 / 292

E N G I N E 6 C Y L I N D E R
3
1. Torque Wrench
2. Valve Spring Tester
3. Valve Spring
FIGURE 4— Valve Spring Tester
Valve Spring Position
The valve springs are installed with the closed
coils toward the head of the valve as shown in
Figure 5.
1. Correct Position, Closed Coils Up
2. Arrow Points to the Valve Seat
3. Incorrect Position, Closed Coils Down
FIGURE 5— Correct Position of the
Valve Spring
Valve Spring and Valve Removal
The valve springs and valves can be removed
after the manifolds (where necessary), cylinder
heads, and valve covers are removed.
"Hornet" 6 and "Wasp" Twin-H-Power
To remove the intake and exhaust manifolds as
an assembly with the carburetors, required
additional clearance can be obtained by remov-
ing the 5/8" nut from the top of the front
engine supports and loosening the rear sup-
ports. The engine may then be moved slightly
upward and to the left.
To assist in the installation of valve
locks, Tool J-1953 can be used on the "Hornet"
and "Wasp" Series (Fig. 6).
FIGURE 6— Valve Lock Installation "Hornet"
and "Wasp" Series
"Wasp" Hi-Torque 6
Clearance permits removal of the manifolds
without movement of the engine.
"Rambler" Series
Exhaust pipe mounted to side of engine need
not be removed.
Valve Spring Compressor J-4487 ("C" Type) will
facilitate valve spring removal and replace-
ment on the "Rambler" Series.
Valve Adjustment
After removing the intake and exhaust manifold
assembly and valve covers, the valves on the
"Hornet" and "Wasp" can be adjusted to a cold
setting clearance of .010" "go"-.011" "no-go"
on the intake valves and .014" "go"-.015"
"no-go" on the exhaust valves.
The "Rambler" valves are adjusted without
removal of the exhaust pipe to a cold setting
clearance of .016" intake valves and .018"
exhaust valves.
Valve Refacing
It is important when refacing valves that just
enough material be ground off to clean up the
face.
The valve should be replaced if there is less
than approximately 1/16" material, "Hornet"
and "Wasp" Series and 1/3
2" "Rambler" Series, left on outer diameter of
the valve head known as the valve head margin.
A heavy margin aids in the dissipation of heat
and helps avoid valve warpage (Fig. 7).
The "Hornet" Series intake and exhaust valve
seat and face angle is ground to 45°.