Jeep Cherokee 2000 Service Manual - page 1141
DESCRIPTION
SPECIFICATIONS
Center bearing diameter
Nominal . . . . . . . . . . . . . . . . . . . 63.050-63.093 mm
−0.25 . . . . . . . . . . . . . . . . . . . . . 62.800-62.843 mm
−0.125 . . . . . . . . . . . . . . . . . . . . 62.925-62.968 mm
Clearance between journal and
bearing: 0.030-0.088 mm
Rear journal diameter
Nominal . . . . . . . . . . . . . . . . . . . 79.980-80.000 mm
−0.25 . . . . . . . . . . . . . . . . . . . . . 79.730-79.750 mm
−0.125 . . . . . . . . . . . . . . . . . . . . 79.855-79.875 mm
Rear bearing diameter
Nominal . . . . . . . . . . . . . . . . . . . 80.045-80.070 mm
−0.25 . . . . . . . . . . . . . . . . . . . . . 79.795-79.820 mm
−0.125 . . . . . . . . . . . . . . . . . . . . 79.920-79.945 mm
Clearance between journal and
bearing: 0.045-0.090 mm
Wear limit: 0.200 mm. . . . . . . . . . . . . . . . . . . . . . . .
Connecting rod journal
Nominal . . . . . . . . . . . . . . . . . . . 53.940-53.955 mm
−0.25 . . . . . . . . . . . . . . . . . . . . . 53.690-53.705 mm
−0.125 . . . . . . . . . . . . . . . . . . . . 53.815-53.830 mm
Connecting rod bearing
Nominal . . . . . . . . . . . . . . . . . . . 53.977-54.016 mm
−0.25 . . . . . . . . . . . . . . . . . . . . . 53.727-53.766 mm
−0.125 . . . . . . . . . . . . . . . . . . . . 53.852-53.891 mm
Clearance between journal and
bearing: 0.022-0.076 mm
Wear limit: 0.200 mm
Crankshaft end play . . . . . . . . . . . . . . . . . . . . . . . .
End play . . . . . . . . . . . . . . . . . . . . 0.080-0.280 mm
Adjustment . . . . . . . . . . . . . . . . . . Thrust washers
Thrust washers available: . . . . . . . . . 2.31-2.36 mm
2.41-2.46 mm
2.51-2.56 mm
Main bearing carriers
Internal diameter
Front . . . . . . . . . . . . . . . . . . . . . 67.025-67.050 mm
Center . . . . . . . . . . . . . . . . . . . . 66.670-66.687 mm
Rear . . . . . . . . . . . . . . . . . . . . . . 85.985-86.005 mm
Liners
Internal diameter . . . . . . . . . . . . 91.997-92.015 mm
Protrusion . . . . . . . . . . . . . . . . . . . . . 0.01-0.06 mm
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . Shims
Available shims: . . . . . . . . . . . . . . . . . . . . 0.15 mm
0.17 mm
0.20 mm
0.23 mm
0.25 mm
Cylinder head
Minimum thickness . . . . . . . . . . . . 89.95-90.05 mm
Gaskets thickness . . . . 1.41 mm +/− 0.08, 0 notches
1.61 mm +/− 0.08, 1 notch
1.51 mm +/− 0.08, 2 notches
DESCRIPTION
SPECIFICATIONS
End plates:
Height . . . . . . . . . . . . . . . . . . . . . . 89.92−90.00 mm
Connecting rods
Weight (without the crank bearing): 966 grams
Small end bearing
Internal diameter
Minimum . . . . . . . . . . . . . . . . . . . . . . . 30.035 mm
Maximum . . . . . . . . . . . . . . . . . . . . . . . 30.050 mm
Crankshaft bearings
Standard Internal diameter . . . 53.977−54.016 mm
Pistons
Skirt diameter . . . . . . . . . . . . . . 91.918-91.932 mm
(measured at approximately 10 mm above the
bottom of the skirt).
Piston clearance: . . . . . . . . . . . . . . 0.065-0.083 mm
Top of piston to cylinder head . . . . . . 0.80-0.89 mm
Piston protrusion . . . . . . . . . . 0.53 - 0.62 Fit gasket
Number (1.41), 0 notches or holes
0.73 - 0.82 Fit gasket
Number (1.61), 1 notch or hole
0.63 - 0.72 Fit gasket
Number (1.51), 2 notches or holes
Piston pins
Type . . . . . . . . . . . . . . . . . . . . . . . . . Fully floating
Pin diameter . . . . . . . . . . . . . . . 29.992-29.996 mm
Clearance . . . . . . . . . . . . . . . . . . . . 0.004-0.012 mm
Piston rings
Clearance in groove:
Top . . . . . . . . . . . . . . . . . . . . . . . . . 0.080-0.130 mm
Second . . . . . . . . . . . . . . . . . . . . . . 0.070-0.110 mm
Oil control . . . . . . . . . . . . . . . . . . . 0.040-0.080 mm
Fitted gap:
Top . . . . . . . . . . . . . . . . . . . . . . . . . 0.30 - 0.45 mm
Second . . . . . . . . . . . . . . . . . . . . . . . 0.30 - 0.45 mm
Oil control . . . . . . . . . . . . . . . . . . . . 0.25 - 0.50 mm
Camshaft
Journal diameter, front . . . . . . . . 53.495-53.51 mm
Bearing clearance . . . . . . . . . . . . . 0.030-0.095 mm
Center . . . . . . . . . . . . . . . . . . . . . . 53.45-53.47 mm
Bearing clearance . . . . . . . . . . . . . . . 0.07-0.14 mm
Rear . . . . . . . . . . . . . . . . . . . . . . . . 53.48-53.50 mm
Bearing clearance . . . . . . . . . . . . . . . 0.04-0.11 mm
Tappets
Outside diameter . . . . . . . . . . . . 22.195-22.212 mm
Rocker gear
Shaft diameter . . . . . . . . . . . . . . . 21.979-22.00 mm
Bush internal diameter . . . . . . . 22.020-22.041 mm
Assembly clearance . . . . . . . . . . . . 0.020-0.062 mm
Valves
Intake valve:
Opens . . . . . . . . . . . . . . . . . . . . . . . . 26° B. T. D. C.
Closes . . . . . . . . . . . . . . . . . . . . . . . 58° A. B. D. C.
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ENGINE
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SPECIFICATIONS (Continued)