Kubota WG1605-G-E3 Workshop Manual page 128

WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, WSM
Piston Ring Gap
1. Insert the piston ring into the lower part of the cylinder (the least
worn out part) with a piston ring compressor and piston.
2. Measure the ring gap with a feeler gauge.
3. If the measurement exceeds the allowable limit, replace the
piston ring.
Top ring
Second
Piston ring gap
ring
Oil ring
Clearance between Piston Ring and Piston Ring Groove
1. Clean the rings and the ring grooves, and install each ring in its
groove.
2. Measure the clearance between the ring and the groove with a
thickness gauge.
3. If the clearance exceeds the allowable limit, replace the piston
ring.
4. If the clearance still exceeds the allowable limit with new ring,
replace the piston.
Top ring
Clearance between
Second
piston ring and piston
ring
ring groove
Oil ring
1-S50
ENGINE
Factory
0.30 to 0.45 mm
specifica-
0.012 to 0.017 in
tion
Allowable 1.25 mm
limit 0.0492 in.
Factory
0.30 to 0.45 mm
specifica-
0.012 to 0.017 in.
tion
Allowable 1.25 mm
limit 0.0492 in.
Factory
0.20 to 0.70 mm
specifica-
0.0079 to 0.027 in.
tion
Allowable 1.25 mm
limit 0.0492 in.
9Y1210661ENS0053US0
Factory
0.040 to 0.080 mm
specifica-
0.0016 to 0.0031 in
tion
Allowable 0.2 mm
limit 0.008 in.
Factory
0.030 to 0.070 mm
specifica-
0.0012 to 0.0027 in
tion
Allowable 0.2 mm
limit 0.008 in.
Factory
0.020 to 0.19 mm
specifica-
0.00079 to 0.0074 in.
tion
Allowable 0.2 mm
limit 0.008 in.
9Y1210661ENS0054US0
KiSC issued 01, 2012 A