Cylinder Block Specifications

DIMENSIONS
Cylinder Bore:
Standard Value 91.10-91.14 mm (3.5866-3.5882 inch)
Flatness Of Gasket Surface:
Maximum Allowable 0.05 mm (0.0020 inch)
Wear limit 0.10 mm (0.0039 inch)
Out-Of-Roundness And Taper:
Maximum Allowable 0.02 mm (0.0008 inch)
Piston to cylinder wall clearance:
Standard Value 0.02-0.04 mm (0.0008-0.0016 inch)

OVERSIZES AVAILABLE
1st O.S. 0.25 mm (0.0098 inch)
2nd O.S. 0.50 mm (0.0197 inch)
3rd O.S. 0.75 mm (0.0296 inch)
4th O.S. 1.00 mm (0.0394 inch)


PISTON DIMENSIONS
Diameter (Standard) 91.08 - 91.10 mm (3.5521 - 3.5529 inch)
Clearance (Piston-To-Cylinder) 0.02 - 0.04 mm (0.0008 - 0.0016 inch)
Piston Pin Press-In Load 7,500 - 17,500 N (765 - 1,785 Kg, 1,686 - 3,934 lb)
Ring Groove Width
No.1 1.21 - 1.23 mm (0.0472 - 0.0480 inch)
No.2 1.51 - 1.53 mm (0.0594 - 0.0602 inch)
Oil 3.010 - 3.035 mm(0.1179 - 0.1184 inch)

PISTON FOR SERVICE (OVERSIZE)
1st O.S. 0.25 mm (0.0100 inch)
2nd O.S. 0.50 mm (0.0200 inch)
3rd O.S. 0.75 mm (0.0300 inch)
4th O.S. 1.00 mm (0.0400 inch

PISTON RING DIMENSIONS

COMPRESSION RING TYPE
No.1 Barrel Type, Steel
No.2 Taper Type, Special Cast Iron
Oil Ring Type 3-piece Type

NUMBER OF RINGS PER PISTON
Compression Rings 2
Oil Ring 1

RING END GAP
No.1
Standard Value 0.45-0.60 mm (0.0175-0.0234 inch)
Wear Limit 0.8 mm (0.031 inch)
No.2
Standard Value 0.2-0.6 mm (0.0175-0.0234 inch)
Wear Limit 0.8 mm (0.031 inch)
Oil Ring Side Rail 0.30-0.45 mm (0.0118-0.0177 inch)

RING SIDE CLEARANCE
No.1
Standard Value 0.03-0.97 mm (0.0012-0.0037 inch)
Wear Limit 0.1 mm (0.004 inch)
No.2
Standard Value 0.02-0.06 mm (0.0008-0.0024 inch)
Wear Limit 0.10 mm (0.0040 inch)

RINGS FOR SERVICE (OVERSIZE)
1st O.S. 0.25 mm (0.0100 inch)
2nd O.S. 0.50 mm (0.0200 inch)
3rd O.S. 0.75 mm (0.0300 inch)
4th O.S. 1.00 mm (0.0400 inch)