Piston Pin; Connecting Rod; Measure The Gap Clearance Of Piston Ring; Parallelism Of Connection Rod Big Head Hole And Small Head Hole - Kipor KM2V80 Manual

Gap clearance of the 1
Gap clearance of the 2
Gap clearance of the 3
Picture 44 Measure the gap clearance of piston ring

3.3 Piston pin

Measure the outside diameter of piston pin, if the measured value exceeds the maintenance
limitation, or has been grinded severely into echelon form, then you should replace the piston
pin. Refer to picture 45.
Table 16 Fitting clearance between piston pin hole diameter and piston pin diameter
Item
Piston pin hole diameter
and piston pin diameter
Picture 45 Measure outside diameter of piston pin and diameter of connection rod bushing hole

3.4 Connecting rod

(1) Check parallelism and torsion deformation of connection rod big head and small head. Clamp
measurement in the big head hole and small head hole to check the its depth of parallelism and
distortional deformation. If the depth of parallelism exceeds promised limitation, please replace
connecting rod. Refer to picture 46.
Table 17 Parallelism of connection rod big head hole and small head hole
Model
Item
Parallelism of
connection rod
big head and
st ring 0.25～0.35
nd
ring 0.20～0.35
rd ring 0.15～0.30
Model KM2V80
Standard
0.004～
0.008
KM2V80
Standard
0.04/100
Service
limitation
0.025