CAT INV2000 - APPENDIX (Cont.); Maintenance Specifications

38
Maintenance Specifications
Item
Specification
Service Limit
Maximum speed (no load)
4650 rpm
-
Compression (at 1400 rpm)
0.95 - 1.25MPa
< 0.95MPa
Cylinder bore I.D.
48.6mm
48.655mm
Cylinder head cover flatness
-
0.10mm
Piston skirt O.D.
48.57 – 48.59mm
48.47mm
Piston to cylinder clearance
0.010 – 0.045mm
0.135mm
Piston pin bore I.D.
11.002 – 11.01mm
11.02mm
Piston pin O.D.
10.994 – 11.00mm
10.984mm
Pin to pin bore clearance
0.002 – 0. 016mm
0.02mm
Piston ring side clearance
0.015 – 0.05mm
0.09mm
Piston ring gap
0.15 – 0.30mm
0.60mm
Piston oil ring gap
0.20 – 0.70mm
1.0mm
Piston ring width
0.97 – 0.99mm
0.92mm
Piston oil ring width
0.385 – 0.425mm
0.355mm
Connecting rod piston end I.D.
11.006 – 11.017mm
11.05mm
Connecting rod crank end I.D.
22.0 – 22.013mm
22.04mm
Oil clearance
0.020 – 0.043mm
0.20mm
Crank end side clearance
0.35 – 0.85mm
1.1mm
Crankshaft pin O.D.
21.97 – 21.98mm
21.87mm
Intake valve clearance
0.05 ± 0.02mm
0.10mm
Exhaust valve clearance
0.05 ± 0.02mm
0.10mm
Intake valve stem O.D.
3.97 – 3.985mm
3.87mm
Exhaust valve stem O.D.
3.935 – 3.95mm
3.835mm
Valve guide I.D.
8.2 – 9mm
9.021mm
Intake valve stem clearance
0.015 – 0.042mm
0.30mm
Exhaust valve stem clearance
0.050 – 0.077mm
0.30mm
Splash cover width
3.3 – 3.6mm
3.7mm
Valve spring free length
28.5mm
25.5mm
Camshaft intake lobe
20.54mm
20.34mm
Camshaft exhaust lobe
20.54mm
20.34mm
Camshaft journal O.D.
15.95 – 16.05mm
15.85mm
Camshaft bracket I.D.
15.95 – 16.05mm
15.85mm
Carburetor main jet
0.67mm
-
Spark plug gap
0.60 – 0.80mm
-
Spark plug wire resistance
3.0 – 12.0kΩ
-
Primary ignition coil resistance
-
-
Secondary ignition coil resistance
3.5kΩ
-
Ignition coil air gap
0.35 – 0.65mm
-
Stator winding resistance
0.95Ω ± 10% at 25°C
-
Stator auxiliary winding resistance
0.43Ω ± 10% at 25°C
-
DC windings
0.12Ω ± 10% at 25°C
-