Cylinder - Kubota WG972-E2 Workshop Manual

WG972-E2, DF972-E2, WSM

(5) Cylinder

Oil Clearance between Crankshaft Journal and Crankshaft
Bearing 2 and Crankshaft Bearing 3 (Continued)
(Reference)
• Undersize crankshaft bearing 2 and 3
Oversize Bearing
Crankshaft bearing 2 02
Crankshaft bearing 2F 02
0.2 mm
0.008 in.
Crankshaft bearing 3 02
Crankshaft bearing 3F 02
Crankshaft bearing 2 04
Crankshaft bearing 2F 04
0.4 mm
0.016 in.
Crankshaft bearing 3 04
Crankshaft bearing 3F 04
• Undersize dimensions of crankshaft journal
Undersize
Dimension A
0.071 to 0.087 in.radius
*Dimension B
0.0394 to 0.0591 in. relief
43.734 to 43.750 mm dia.
Dimension C
The crankshaft journal must be fine-finished to higher than ∇∇∇∇.
*Holes to be de-burred and edges rounded with 1.0 to 1.5 mm
(0.0394 to 0.0591 in.) relief.
Cylinder Wear
1. Measure the I.D. of the cylinder at the six positions (see figure)
with a cylinder gauge to find the maximum and minimum I.D.'s.
2. Get the difference (Maximum wear) between the maximum and
the minimum I.D.'s.
Factory spec.
Cylinder I.D.
Allowable limit
(A) Top
(B) Middle
(C) Bottom (Skirt)
S-64
GASOLINE / LPG ENGINE
Code Number
15694-23930
1G460-07530
1G460-07580
1G460-07630
15694-23940
1G460-07540
1G460-07590
1G460-07640
0.2 mm
0.008 in.
1.8 to 2.2 mm radius 1.8 to 2.2 mm radius
0.071 to 0.087 in.radius
1.0 to 1.5 mm relief 1.0 to 1.5 mm relief
0.0394 to 0.0591 in. relief
43.534 to 43.550 mm dia.
1.72181 to
1.72244 in. dia.
(0.8S)
74.500 to 74.519 mm
2.93307 to 2.93382 in.
74.669 mm
2.93972 in.
(a) Right-Angled to Piston Pin
(b) Piston Pin Direction
Marking
020 US
020 US
040 US
040 US
0.4 mm
0.016 in.
1.71394 to
1.7147 in. dia.
W1047088
W1070089
KiSC issued 01, 2006 A