Fig. 101: Testing Valve Spring
Courtesy of CHRYSLER LLC
Whenever valves have been removed for inspection, reconditioning or replacement, valve springs should be
tested .
As an example;
the compression length of a spring to be tested is 38.00 mm (1.496 in.). Turn the table
of Tool C-647 until surface is in line with the 38.00 mm (1.496 in.) mark on the threaded stud and the zero mark
on the front. Place spring over stud on the table and lift compressing lever to set tone device. Pull on torque
wrench until ping is heard. Take reading on torque wrench at this instant. Multiply this reading by two. This
will give the spring load at test length. Fractional measurements are indicated on the table for finer adjustments.
Refer to Engine Specifications to obtain specified height and allowable tensions. See
Engine - Specifications
.
Replace any springs that do not meet specifications.
Installation
CYLINDER HEAD OFF
1 - SPECIAL TOOL C-647
NOTE:
The are two different types of valve springs used that are interchangeable, but
have different specifications. See Engine/Cylinder Head/SPRING(S), Valve -
Description.
2010 Jeep Wrangler Sport
2010 ENGINE 3.8L - Service Information - Wrangler
viernes, 1 de octubre de 2021 05:18:30 p. m.
Page 78
© 2011 Mitchell Repair Information Company, LLC.
