Valve Spring; Free Length And Verticality Of Valve Spring; Measure Valve Spring; Lube Oil Clearance Between Rockshaft And Valve Rocker Hole - Kipor KM2V80 Manual

pipe and
exhaust valve
rod

1.4 Valve spring

(1)Measure the free length of valve spring with vernier caliper, and change the valve spring if the
free length exceeds limitation valve.
(2)Measure the valve spring verticality; revolve valve spring to see whether the whole side of
valve spring is connected with the square ruler. Change valve spring if the measured verticality
exceeds the limitation valve.
Refer to picture 35
Table 8 Free length and verticality of valve spring
Model
Item
Valve spring free
length
Valve spring
verticality
Picture 35 Measure valve spring
(3)Check whether there is any crack or corrosion on the valve spring surface, if there is any,
please change it.

1.5 Lube oil clearance between rockshaft and valve rocker hole

Measure the outside diameter of rockshaft with outside micrometer; measure the aperture of
valve rockshaft hole with inside lever meter. Then account lube oil clearance, if the measured
lube oil clearance exceeds limitation value, please change rockshaft and valve rocker arm. Refer
to picture 36
Table 9 Fitting clearance of valve rocker arm hole and rockshaft diameter
Item
Valve rocker arm hole and
limitation)
KM2V80
Standard
39.5
0.5
Model KM2V80
Standard
0.016～
Service
limitation
0.12