wsm Kubota L4100, Workshop Manual

Page: 121 / 346

ENGINE L4100, WSM
1-S49
(EU)
Balancer Shaft Alignment
1. Support the balancer shaft with V blocks on the surface plate
and set a dial indicator with its tip on the intermediate journal at
high angle.
2. Rotate the balancer shaft on the V blocks and get the
misalignment (half of the measurement).
3. If the misalignment exceeds the allowable limit, replace the
balancer shaft.
9Y1210278ENS0104US0
Oil Clearance of Balancer Shaft Journal
1. Measure the balancer shaft journal O.D. with an outside
micrometer.
2. Measure the cylinder block bore I.D. for balancer shaft with an
inside micrometer or cylinder gauge.
3. If the clearance exceeds the allowable limit, replace the
balancer shaft.
9Y1210278ENS0128US0
Balancer shaft alignment Allowable limit
0.02 mm
0.0008 in.
Oil clearance of balancer
shaft journal 1
Factory specification
0.051 to 0.132 mm
0 .00201 to 0.00520 in.
Allowable limit
0.20 mm
0.0079 in.
Balancer shaft journal 1
O.D.
Factory specification
43.934 to 43.950 mm
1.72969 to 1.73032 in.
Balancer shaft bearing 1
I.D.
Factory specification
43.980 to 44.045 mm
1.73150 to 1.73406 in.
Oil clearance of balancer
shaft journal 2
Factory specification
0.030 to 0.111 mm
0.00118 to 0.00437 in.
Allowable limit
0.20 mm
0.0079 in.
Balancer shaft journal 2
O.D.
Factory specification
41.934 to 41.950 mm
1.65095 to 1.65158 in.
Balancer shaft bearing 2
I.D.
Factory specification
41.980 to 42.045 mm
1.65276 to 1.65532 in.
Oil clearance of balancer
shaft journal 3
Factory specification
0.020 to 0.094 mm
0.00079 to 0.00370 in.
Allowable limit
0.20 mm
0.0079 in.
Balancer shaft journal 3
O.D.
Factory specification
21.947 to 21.960 mm
0.86406 to 0.86457 in.
Balancer shaft bearing 3
I.D.
Factory specification
21.980 to 22.041 mm
0.86535 to 0.86776 in.
(1) Balancer Shaft Journal 1
(2) Balancer Shaft Journal 2 (3) Balancer Shaft Journal 3
KiSC issued 08, 2012 A