Kubota G2000 4WS User Manual

G1700·G1BOO·G1900·G2000 WSM.10B30
5.1 ENGINE
C019F021
Free Length and Tilt of Valve Spring
1. Measure the length A with varnier calipers. If the
measurement is less than the allowable limit. replace it.
2. Put the spring on a surface plate, place a square on the side
of the spri ng.
3. Check to see if the entire side is in contact with the square.
Rotate
the spring and measure the maximum B.
If the measurement exceeds the allowable limit. replace it.
4. Check the entire surface of the spring for scratches. Replace
it, if any.
Free
length A
Factory
SPE'C
31.6mm
1.244 in.
Allowable limit
28.4 mm
U18in
Tilt 8
Allowable limit
1.2 mm
0.047 in.
Valve Spring Setting Load
1. Place the spring on a tester and compress it to the same
length it is actually compressed in the engine.
2. Read the compression load on the gauge.
3. If the measurement is less than the allowable limit. replace it.
C019F022
64,7 N 127 mm
'2
Factory spec. 6.6 I<:gf I 27 mm
146 Ibs /1.063 in.
54.9 N
127 mm
Setting length
Allowable limit 5.6 kgf / 27 mm
123 Ibs /1.063 in.
C019F023
Oil Clearance between Rocker Arm and Rocker Arm Shaft
l.-Measure
the rocker arm LD. with an inside micrometer.
2. Measure the rocker arm shaft 0.0. with an outside
micrometer, and then calculate the oil clearance.
3. If the clearance exceeds the allowable limit, replace the
rocker arm and measure the oil clearance again. If it still
exceeds the allowable limit, replace also the rocker arm
shaft.
Oil clearance between
rocker arm and rocker
arm shaft
Factory spec.
Allowable limit
0016to 0,045 mm
0.00063 toO.OOI77 In
0.15 mm
0.0059 in.
Rocker arm shaft 0.0.
Factory spec.
10.473to 10.484mm
0.41233toO.41276 in
Rocker arm 1.0
Factory spec
10.S00to10.518mm
041339 to 0.41410 in.
(2) Piston and Connecting Rod
Piston Pin-Bore 1.0.
1. Measure the I. D. of the piston pin-bore in both the
horizontal and vertical directions with a cylinder gauge.
2. If the measurement exceeds the allowable limit, replace the
piston.
Piston
pin-bore I,D.
Factory spec.
20.000
to 20.013 mm
o78740 to 0 78791 in.
Allowable> lim it
20.05
mm
07894 in.
C083F040
S.1-27
173

Kubota G2000 4WS Specifications

General

Brand	Kubota
Model	G2000 4WS
Category	Tractor
Language	English