Jeep Cherokee 2000 Service Manual - page 746
DESCRIPTION
SPECIFICATION
Stem to Guide Clearance
0.025 - 0.076 mm
(0.001 - 0.003 in.)
ValveFace Angle
Intake
46.5°
Exhaust
46.5°
Valve Head Diameter
Intake
48.387 - 48.641 mm
(1.905 - 1.915 in.)
Exhaust
37.973 - 38.227 mm
(1.495 - 1.505 in.)
Tip Refinishing (Max
Alowable)
0.25 mm (0.010 in.)
VALVE SPRINGS
Free Length (Approx.)
47.65 mm (1.876 in.)
Spring Load
Valve Closed
316 to 351 N @ 41.656
mm
(71 to 79 Lbs. @ 1.64
in.)
Valve Open
898.6 to 969.7 N @
30.89 mm
(202 to 218 Lbs. @ 1.216
in.)
Inside Diameter (Top)
21.0 mm to 21.51 mm
(0.827 to 0.847 in.)
Installed Height
41.656 mm (1.640 in.)
CRANKSHAFT
End Play
0.038 to 0.165 mm
(0.0015 to 0.0065 in.)
Main Bearing Journal
Diameter
63.489 to 63.502 mm
(2.4996 to 2.5001 in.)
DESCRIPTION
SPECIFICATION
Main Bearing Journal
Width
No. 1
27.58 to 27.89 mm
(1.086 to 1.098 in.)
No. 2
32.28 to 32.33 mm
(1.271 to 1.273 in.)
No. 3-4-5
30.02 to 30.18 mm
(1.182 to 1.188 in.)
Main Bearing Clearance
0.03 to 0.06 mm
(0.001 to 0.0025 in.)
Main Bearing Clearance
(Preferred)
0.051 mm
(0.002 in.)
Connecting Rod Journal
Diameter
53.17 to 53.23 mm
(2.0934 to 2.0955 in.)
Connecting Rod Journal
Width
27.18 to 27.33 mm
(1.070 to 1.076 in.)
Out of Round - Max
0.013 mm (0.0005 in.)
Taper - Max
0.013 mm (0.0005 in.)
CYLINDER BLOCK
Deck Height
236.73 mm (9.320 in.)
Deck Clearance
0.000 mm (0.000 in.)
Cylinder Bore Diameter—
Standard
98.45 to 98.48 mm
(3.8759 to 3.8775 in.)
Cylinder Bore Diameter—
Taper (Max)
0.025 mm
(0.001 in.)
Out of Round (Max)
0.025 mm
(0.001 in.)
Tappet Bore Diameter
23.000 to 23.025 mm
(0.9055 to 0.9065 in.)
Flatness
0.03 mm per 25 mm
(0.001 in. per 1 in.)
0.05 mm per 152 mm
(0.002 in. per 6 in.)
9 - 56
2.5L ENGINE
XJ
SPECIFICATIONS (Continued)