17
(4) Valve spring
a. Check the valve spring visually for damage.
b. Measure the squareness of the spring using a
square on a surface plate and replace if the
service limit is exceeded.
c. Check the free length and spring force with a
spring tester and replace if the service limit is
exceeded.
Standard
assembling value
Service limit
Squareness (mm)
1.2 2
Free length (mm)
35 33.5
Spring force (when
compressed to 30.4
mm)
8.1 7
(5) Inspection of combustion chamber
Check and clean the inside of the combustion
chamber.
022X
Reassembly
Reassemble parts in the order reverse to disassembly taking care for the following points.
(1) When assembling the valve, spring, retainer and cotter, be careful not to damage the valve guide seal.
(2) Tighten the glow plug with the tightening torque of 14.7 – 19.6 N·m {1.5 – 2.0 kgf·m}.
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