Kubota B1620 Workshop Manual

FRONT AXLE
B1220, B1620, B1820, WSM
6-S10
(EU)
[2] SERVICING
Clearance between Differential Case and Differential Pinion
1. Measure the differential pinion boss O.D. with an outside
micrometer.
2. Measure the differential case bore I.D. with a cylinder gauge,
calculate the clearance.
3. If the clearance exceeds the allowable limit, replace faulty parts.
9Y1210272FAS0009US0
Backlash between 10T Bevel Gear and 16T Bevel Gear
1. Stick a strip of fuse to three spots on the 16T bevel gear (1) with
grease.
2. Fix the front axle case, bevel gear case and front gear case.
3. Turn the axle.
4. Remove the bevel gear case from front axle case and measure
the thickness of the fuses with an outside micrometer.
5. If the backlash is not within the factory specifications, adjust with
shim (3).
(Reference)
• Thickness of adjusting shims (3) :
0.8 mm (0.031 in.)
1.0 mm (0.039 in.)
1.2 mm (0.047 in.)
1.4 mm (0.055 in.)
• Tooth contact : More than 35 %
9Y1210272FAS0016US0
Clearance between
differential case and
differential pinion
Factory specification
0.032 to 0.068 mm
0.00126 to 0.00268 in.
Allowable limit
0.2 mm
0.0079 in.
Differential case bore
I.D.
Factory specification
15.000 to 15.018 mm
0.59056 to 0.59125 in.
Differential pinion O.D. Allowable limit
14.950 to 14.968 mm
0.58859 to 0.58929 in.
Backlash between 10T
bevel gear and 16T
bevel gear
Factory specification
0.1 to 0.3 mm
0.004 to 0.012 in.
(1) 16T Bevel Gear
(2) 10T Bevel Gear
(3) Shim
KiSC issued 07, 2011 A

Kubota B1620 Specifications

General

Engine Type	Diesel
Cylinders	3
Fuel Type	Diesel
Hydraulic System Type	Open center
Drive	4WD
3-Point Hitch Category	Category I