Lovol KM/4L22 User Manual

MAINTENANCE MANUAL OF ENGINE
44
Connecting rod-naturally aspirated engine
Type-----------------------------------------------------------------------H-section, square end
Positioning of bearing cap and connecting rod---------------------Saw-tooth type
Diameter of hole at big end of connecting rod ---------------------Φ54
+0.019
0
mm
Diameter of hole at small end of connecting rod-------------------Φ31
+0.025
0
mm
Center distance--------------------------------------------------------- 145±0.03 mm
Connecting rod bearing shell- naturally aspirated engine
Type-----------------------------------------------------------------------Steel backing, aluminum/stannum material
Width of connecting rod bearing shell--------------------------------Φ31
+0.025
0
mm
Thickness of connecting rod bearing shell---------------------------2
-0.020
-0.033
mm
Clearance of connecting rod bearing shell----------------------------0.04-0.101 mm
Piston pin-naturally aspirated engine
Type-------------------------------------------------------------------------Full floating
Outer diameter------------------------------------------------------------Φ28
0
-0.006
mm
Clearance fit in piston axle sleeve--------------------------------------0.0045-0.0105 mm
Small end bushing-naturally aspirated engine
Type--------------------------------------------------------------------------Full floating
Outer diameter--------------------------------------------------------------Φ31
+0.025
0
mm
Inner diameter--------------------------------------------------------------Φ28
+0.038
+0.025
mm
Clearance between small end axle sleeve and piston pin-------------0.025-0.042 mm
Crankshaft
Main journal diameter:
4-cylinder engine----------------------------------------------------------Φ80
0
-0.019
mm
Front journal width--------------------------------------------------------29
+0.1
0
mm
Central journal width----------------------------------------------------- 29
+0.1
0
mm
Width of all other journals----------------------------------------------- 29
+0.1
0
mm
Crank pin diameter--------------------------------------------------------Φ60
0
-0.019
mm
Crank pin width------------------------------------------------------------31
+0.1
0
mm
Flange diameter------------------------------------------------------------Φ80
0
-0.019
mm
Axial play of crankshaft---------------------------------------------------0.075-0.24 mm
Maximum allowable axial play---------------------------------- --------0.24 mm
Journal and fillet radius of crank pin-------------------------------------R3.5
0
-0.5
mm

Lovol KM/4L22 Specifications

General

Brand	Lovol
Model	KM/4L22
Category	Engine
Language	English