Ford 1956 Truck User Manual

16 Chapter 1-General Engine Overhaul, Inspection, and Repair
fig. 8-Push Rod Runout Check
A suitable check for bent push rods can be made
while they are installed in the engine by rotating them
(valve closed) or they can be checked between ball and
cup centers with a dial indicator (fig. 8) .
If the total runout of a push rod exceeds 0.020 inch,
at any point, discard the rod. Do not attempt to
straighten.
(2) REPAIRS. If the clearance between the shaft
and rocker arms is excessive, replace the shaft and/or
the rocker arms. Replace all rocker arms that have
severely scored or scuffed bores and/or grooved pads.
Replace all severely scored or scuffed rocker shafts.
Dress up minor nicks or scratches. Replace all damaged
adjusting screws, lock nuts, and springs.
Replace the oil drain tube if it is cracked or has a
sharp bend.
b. Cylinder Heads.
To protect the machined surfaces of the cylinder
heads, do not remove the holding fixture while the
heads are off .t he engine.
(1) CLEANING A.ND INSPECTION. With the valves
installed to protect the valve seats , remove carhon
deposits from the combustion chamber and valve heads
with a scraper and a wire brush. Be careful not to
scratch the gasket surface. Clean the heads with solvent
to remove old gasket sealer, dirt, and grease.
Check the head for cracks. Check the gasket surface
for burrs, nicks, and for flatness (fig. 9). Service specifi-
cations for flatness are 0.006 inch maximum overall, or
'.
CHECK DIAGONAllY
('i1, r",n ACROSS CENTER
fig. 9- Cylinder Head Gasket Surface flatnelS
Check-Typical
6601
fig. J O-Valve face Runout Check
0.003 inch in any six inches. Make sure all water pas-
sages are open. Check the cylinder head core plug for
evidence of leakage.
(2) REPAIRS. Replace the head if it is cracked, or if
it is damaged beyond repair.
CAUTION: Do not plane or grind excessive material
from the cylinder '.ead gasket surface as the com·
preuion ratio i& altered when thi& operation i.
performed.
Valve Spring
Tesler ___ ,(
, .
fig. "-Valve Spri"g Pressure Check

Ford 1956 Truck Specifications

General

Brand	Ford
Model	1956 Truck
Category	Automobile
Language	English