Kubota G2000 4WS User Manual

G1700·Gt800·Gt900·G2000 WSM.10831
S.l ENGINE
Clearanc.e between Piston Ring and Groove
1. Remove carbon from the ring grooves.
2. Place the ring into each ring groove. and measure the
clearance at several points around the ring groove with a
feeler gauge.
3. If the clearance exceeds allowable limit. replace the piston
ring since compression leak
and oil shortage result.
4. If the clearance still exceeds the allowable limit after
replacing the piston ring, replace the piston.
BOB3F135
\
[0662· 0662-L (Mark "4" on Piston Head)]
[
0662 . 0662-L . 0722 (Mark "1" on Piston Head) ]
[ 0722
(Mark "3" on Piston Head) 1
Clearance
between
piston
Second
compression
ring
Factory
spec.
0.085
to 0.115 mm
0.00335 to 0.00453 in.
Allowable
limit
0.15 mm
0.0059 in.
ring
and
groove
Oil ring
Factory
spec.
0.020 to 0.060 mm
0.00079 to 0.00236 in.
Allowable
0.15 mm
limit
0.0059 in.
Clearance
between
piston
Second
compression
ring
Factory
spec.
0.090toO.120 mm
0.00354
to 0.00472 in.
Allowable
limit
0.15mm
0.0059 in.
ring and
groove
Oil ring
Factory
spec.
0.040
to O.OBO mm
0.00157 toO.00315 in.
Allowable
limit
0.15mm
0.0059 in.
STlOF040
Connecting Rod Alignment
1. Remove the connecting rod crank pin bearing. and install the
connecting rod cap.
2. Set the connecting rod to the connecting rod alignment tool
(Code No. 07909-31661).
3. Install the piston pin into the connecting rod. Set the gauge
on
the piston pin.
4. Measure three point's gaps
between the pins of the gauge
and
flat surface of the alignment tool. If the measurement
exceeds
the allowable limit. replace it.
Bend of connecting
0.05 mm per 100 mm
Allowable limit
rod
0.0020 in. per 3.94 in.
(3) Timing Gear and Camshaft
Timing Gear Bac.klash
1. Set a dial indicator (lever type) with its tip on the gear tooth.
2. Move the gear to measure the backlash. holding its mating
gear.
3. If the backlash exceeds the allowable limit, check the oil
clearance.
4.
If the oil clearance is proper, replace the gears.
Factory
spec.
Allowable
limit
Factory
spec.
Allowable
limit
Backlash between idle
gear and crank gear
Backlash between idle
gear and cam gear
0.043 to 0.124 mm
0.00169 toO.004BB in.
015mm
0.0059 in.
0.047 toO.123
mm
0.00185 to 0.00484 in.
0.15
mm
0.0059 in.
Backlash
between idle
Factory
spec.
0.046
to 0.124 mm
0.00181
to 0.00488 in.
gear
and injection
pump gear
Allowable
limit
0.15mm
0.0059 in.
Backlash
between oil
Factory
spec.
0.041
toO.123mm
0.00161
to 0.00484 in.
pump gear and crank
gear
Allowable
limit
0.15 mm
0.0059 in.
5.1-29
175

Kubota G2000 4WS Specifications

General

Brand	Kubota
Model	G2000 4WS
Category	Tractor
Language	English