Checking Clearance Between Piston Ring And Ring Groove; Checking Side Clearance Of Crankshaft - Kubota WSM 05-E4B Series Workshop Manual

4. ENGINE
Service lim-
Oil ring
it
6.29 Checking clearance between
piston ring and ring groove
Tools required
• Feeler gauge
1. Clean the piston rings and the ring grooves, and
install each piston ring in its groove.
2. Measure the clearance between the piston ring and
the groove with a feeler gauge.
NOTE
• If the clearance is more than the service
limit, replace the piston ring.
• If the clearance stays more than the service
limit with a new piston ring, replace the
piston, too.
Second ring
Clearance be-
tween piston
ring and ring
groove
Oil ring
4-64
D1005-
E4B/
E4BG
D1105-
E4B/
E4BG 1.25 mm
D1305- 0.0492 in.
E4B/
E4BG
V1505-
E4B/
E4BG
0.0850 to
Service speci- 0.122 mm
fication 0.00335 to
0.00480 in.
0.20 mm
Service limit
0.0079 in.
0.020 to
Service speci- 0.060 mm
fication 0.00079 to
0.0023 in.
0.15 mm
Service limit
0.0059 in.
6.30 Checking side clearance of
crankshaft
Tools required
• Dial gauge
1. Set a dial gauge with its point on the end of the
crankshaft.
SERVICING
6. Servicing
05-E4B SERIES,05-E4BG SERIES
KiSC issued 03, 2023 A