Checking Clearance Between Inner Rotor And Outer Rotor; Checking Clearance Between Outer Rotor And Pump Body - Kubota D1803-CR-E4 Workshop Manual

4. ENGINE
2. If the cylinder wear is more than the service limit,
bore and hone it to the specified dimension.
NOTE
• If the maximum I.D. or the difference for the
oversize cylinder is more than the service
limit, replace the crankcase with a new one.
• Oversize cylinder bore I.D.
Service specifi-
cation
Oversize cylinder
I.D.
Service limit
Difference be-
tween maximum
Service limit
I.D. and minimum
I.D.
Hone to 1.4 to 2.2 μmRz (0.000056 to
Finishing
0.000086 in.Rz)
(1) Cylinder bore I.D. (Before
Correction)
3. Replace the piston and piston rings with oversize
ones.
Oversize piston Service specifi-
and piston rings cation
RELATED PAGE
7.38 Checking cylinder wear on page 4-183
7.40 Checking clearance between
inner rotor and outer rotor
Tools required
• Feeler gauge
4-184
87.250 to 87.272 mm
3.4351 to 3.4359 in.
87.420 mm
3.4417 in.
0.15 mm
0.0059 in.
(2) Cylinder bore I.D. (Oversize)
0.25 mm
0.0098 in.
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
1. Measure the clearance between the lobes of the
inner rotor and the outer rotor with a feeler gauge.
NOTE
• If the clearance more than the service limit,
replace the oil pump rotor assembly.
Service specifi-
Clearance be-
cation
tween inner rotor
and outer rotor
Service limit
7.41 Checking clearance between
outer rotor and pump body
Tools required
• Feeler gauge
SERVICING
7. Servicing
0.030 to 0.14 mm
0.0012 to 0.0055 in.
0.2 mm
0.008 in.
KiSC issued 12, 2018 A