Subaru EA190V, Service Manual

Page: 45 / 52

45
e
：
) Oil seal
・
Apply oil to the circumference of a oil seal.
・
Drive the oil seal in the cylinder barrel using following tool.
：
Tools Driver handle, Retainer assembler
・
Apply the lubrication oil on, after reassembling.
f)
：
Piston
・
Apply oil to the piston and cylinder
・
Install the piston with the mark on the piston head toward the f lywheel side. (corrected 2018.1.20)
(2) Piston check
Check the piston and cylinder for contacting, and check the groove for defects, piston top for burn and
cracks. If damaged, replace.
Clean the carbon deposit
Clean the deposit round the piston top and cylinder neck before checking, first soak the carbon
deposit with kerosene, and then clean with meter scraper or metal brush.
a) Piston skirt O.D
Measure the piston skirt O.D with outside micrometer,
if out of the service limit, replace it.
Standard Service limit
67.989-67.971mm 67.850mm
b) Piston pin bore to piston clearance
Separately measure the piston pin bore I.D and O.D with inside micrometer and outside micrometer.
Then calculate clearance by measuring results.
Standard Service limit
0.004-0.016 0.060
10mm
Piston ring compressor
commercial available
Driver handle
Retainer assembler
Oil seal