Cylinder - wsm wg972-e4 Workshop Manual

WG972-E4, WSM
(Continued)

(6) Cylinder

(Reference)
• Undersize crankshaft bearing 2 and 3
Undersize 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
0.02 in.
Crankshaft bearing 3 04
Crankshaft bearing 3F 04
• Undersize dimensions of crankshaft journal
0.2 mm
Undersize
0.008 in.
1.8 to 2.2 mm radius
Dimension A
0.071 to 0.086 in. radius
1.0 to 1.5 mm relief
*Dimension B
0.040 to 0.059 in. relief
43.734 to 43.750 mm dia.
Dimension C, D
1.7219 to 1.7224 in. dia.
The crankshaft journal must be fine-finished to higher than Rmax = 0.8S
*Holes to be de-burred and edges rounded with 1.0 to 1.5 mm
(0.040 to 0.059 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 specification
Cylinder I.D.
Allowable limit
(A) Top
(B) Middle
(C) Bottom (Skirt)
1-S56
ENGINE
Code Number Marking
15694-23930
020 US
1G460-07530
1G460-07580
020 US
1G460-07630
15694-23940
040 US
1G460-07540
1G460-07590
040 US
1G460-07640
0.4 mm
0.02 in.
1.8 to 2.2 mm radius
0.071 to 0.086 in. radius
1.0 to 1.5 mm relief
0.040 to 0.059 in. relief
43.534 to 43.550 mm dia.
1.7140 to 1.7145 in. dia.
9Y1211108ENS0096US0
74.500 to 74.519 mm
2.9331 to 2.9338 in.
74.669 mm
2.9397 in.
(a) Right-Angled to Piston Pin
(b) Piston Pin Direction
9Y1211108ENS0097US0
KiSC issued 07, 2015 A