EMAK K 700 H Workshop Manual page 51

Workshop manual
Inspection
Crankshaft bearing free play
1) Clean the bearing in solvent and dry it.
2) Spin the bearing by hand and check for play. Replace the
bearing if it is noisy or has excessive play.
Piston pin OD
Model
K 700 H – K 800 H
Cylinder inside diameter
Measure three points on the "X" and "Y" shaft and record cylinder
inside diameter "X" (shaft is vertical to crankshaft) and "Y" shaft
(parallel to crankshaft).
Take maximum reading as the wearing and tapering of the cylinder.
Model
K 700 H – K 800 H
Piston inspection
Check the contact between piston and cylinder, defects of ring grooves, ablation and cracks on piston top,
etc. replace the piston if presents damages severe.
Removal of carbon deposits
Carbon deposits accumulate on piston top and upper edge of cylinder. Remove carbon deposits completely
before inspection. Saturate the carbon deposits with kerosene and then use a blunt scraper or a wire brush
to remove carbon deposits.
Piston skirt outside diameter
Measure and record the piston skirt outside diameter at the 10 mm
from piston skirt maximum lower side making 90° to piston pin hole.
Model
K 700 H – K 800 H
Standard
13.0 mm
Standard
65.0 mm
Standard
64.985 mm
Service limit
12.954 mm
Service limit
65.165 mm
Service limit
64.845 mm
51
Play
Axial Radial
Play