Operation Manual

BX25. RCK54(P)-23BX. RCK60B-23BX, LA240. BT601, WSM
ENGINE
ENGINE BODY (Continued)
Item
Factory Specification
Allowable Limit
Idle Gear Shaft to Idle Gear Bushing
Idle Gear Shaft
Idle Gear Bushing
Oil Clearance
0.0.
1.0.
0.020 to 0.084 mm
0.00079 to 0.00331
in.
19.967 to 19.980 mm
0.78610 to 0.78661
in.
20.000 to 20.051 mm
0.78740 to 0.78941 in.
0.10 mm
0.0039
in.
-
Piston Pin Bore
1.0. 20.000 to 20.013 mm
0.78740 to 0.78791 in.
20.05
mm
0.7894 in.
Piston Pin to Small End Bushing
Piston Pin
Small End Bushing
Clearance
0.0.
1.0.
0.014 to 0.038 mm
0.00055 to 0.00150
in.
20.002 to 20.011 mm
0.78748 to 0.78783 in.
20.025 to 20.040 mm
0.78839 to 0.78897 in.
0.10 mm
0.0039
in.
-
Piston Pin to Small End Bushing
(Spare Parts)
Small
End Bushing
Oil Clearance
1.0.
0.015 to 0.075 mm
0.00059 to 0.00295 in.
20.026 to 20.077 mm
0.78843 to 0.79043 in.
0.15 mm
0.0059 in.
-
Connecting Rod Alignment
0.05mm
0.0020 in.
Piston Ring Gap
Top Ring
0.20 to 0.35
mm
0.0079 to 0.0138 in.
1.25 mm
0.0492 in.
Second Ring 0.35 to 0.50 mm
0.0138 to 0.0197
in.
1.25 mm
0.0492 in.
Oil Ring 0.20 to 0.35 mm
0.0079 to 0.0138 in.
1.25
mm
0.0492 in.
Piston Ring to Piston Ring Groove
Second Ring
Oil Ring
Clearance
Clearance
0.090 to 0.120
mm
0.00354 to 0.00472 in.
0.04 to 0.08 mm
0.0016 to 0.0031
in.
0.15 mm
0.0059
in.
0.15mm
0.0059 in.
Crankshaft
Side Clearance
0.15 to
0.31 mm
0.0059 to 0.0122 in.
0.50 mm
0.0197 in.
Crankshaft
Alignment
-
0.02 mm
0.0008
in.
W10138740
1-S6
I