Kubota D1803-CR-E4 User Manual

RELATED PAGE
4.30 Measuring angular deviation between crankshaft
T
.D.C. and crankshaft position sensor detected T
.D.C.
on page 4-112
7.1 Checking cylinder head top clearance on page
4-162
7.32 Checking oil clearance between
crankpin and crankpin bearing
Tools required
• Plastigauge
1.
Clean the crankpin and crankpin bearing.
2. Put a strip of plastigauge on the center of the
crankpin.
NOTE
• Do
not
put the plastigauge into the crankpin
oil hole.
3. Install the connecting rod cap.
4. Tighten the connecting rod screws to the specified
torque.
NOTE
• When you
tighten the connecting rod
screws, do not move the crankshaft.
Tightening tor-
que
Connecting rod
screw
40.0 to 45.0 N⋅m
4.08 to 4.58 kgf⋅m
29.5 to 33.1 lbf⋅ft
5. Remove the connecting rod cap again.
6. Measure the
width that it becomes flat with the
scale to get the oil clearance.
NOTE
• If
the
clearance more than the service limit,
replace the crankpin bearing.
• If the same dimension bearing is not
applicable because of the crankpin wear,
replace it with an undersize one.
Crankpin O.D.
Service specifi-
cation
46.959 to 46.975 mm
1.8488 to 1.8494 in.
Crankpin bearing
I.D.
Service specifi-
cation
47.000 to 47.046 mm
1.8504 to 1.8522 in.
Oil clearance be-
tween crankpin
and crankpin bear-
ing
Service specifi-
cation
0.025 to 0.087 mm
0.00099 to 0.0034 in.
Service limit
0.20 mm
0.0079 in.
(Reference)
• Undersize dimensions of crankpin
Undersize
0.2 mm
0.008 in.
0.4 mm
0.02 in.
Dimension A
3.3 to 3.7 mm radius
0.13 to 0.14 in. radius
3.3 to 3.7 mm radius
0.13 to 0.14 in. radius
Dimension
B
*
1.0 to 1.5 mm relief
0.040 to 0.059 in. relief
1.0 to 1.5 mm relief
0.040 to 0.059 in. relief
Dimension
C
46.759 to 46.775 mm
dia.
1.8409 to 1.8415 in.
dia.
46.559 to 46.575 mm
dia.
1.8331 to 1.8336 in.
dia.
The crankpin must be fine-finished to higher than Rmax = 0.4 S
* Holes to be de-burred and edges rounded with 1.0 to 1.5 mm
(0.040 to 0.059 in.) relief.
A Dimension A
B Dimension B
C
Dimension C
7.33 Checking oil clearance between
crankshaft journal and crankshaft
bearing 1
Tools required
• External micrometer
•
Internal micrometer
SERVICING
7. Servicing 4. ENGINE
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
4-179
KiSC issued 12, 2018 A

Kubota D1803-CR-E4 Specifications

General

Brand	Kubota
Model	D1803-CR-E4
Category	Engine
Language	English