Jeep Grand Cherokee WK. Manual — part 1180
CRANKSHAFT
DESCRIPTION
SPECIFICATION
Metric
Standard
Main Bearing Journal Diameter
63.488 - 63.512 mm
2.4996 - 2.5005 in.
Bearing Clearance
0.004 - 0.034 mm
0.0002 - 0.0013 in.
Out of Round (MAX)
0.005 mm
0.0004 in.
Taper (MAX)
0.008 mm
0.0004 in.
End Play
0.052 - 0.282 mm
0.0021 - 0.0112 in.
End Play (MAX)
0.282 mm
0.0112 in.
Connecting Rod Journal Diameter
50.992 - 51.008 mm
2.0076 - 2.0082 in.
Bearing Clearance
0.010 - 0.048
0.0004 - 0.0019 in.
Out of Round (MAX)
0.005 mm
0.0002 in.
Taper (MAX)
0.008 mm
0.0004 in.
CAMSHAFT
DESCRIPTION
SPECIFICATION
Metric
Standard
Bore Diameter
26.02 - 26.04 mm
1.0245 - 1.0252 in.
Bearing Journal Diameter
25.975 - 25.995 mm
1.0227 - 1.0235 in.
Bearing Clearance
0.025 - 0.065 mm
0.001 - 0.0026 in.
Bearing Clearance (MAX)
0.065 mm
0.0026 in.
End Play
.075 - .200 mm
0.003 - 0.0079 in.
End Play (MAX)
.200 mm
0.0079 in.
VALVE TIMING
DESCRIPTION
SPECIFICATION
Intake
Opens (BTDC)
4.4°
Closes (ATDC)
239.1°
Duration
243.5°
Exhaust
Opens (BTDC)
240.5°
Closes (ATDC)
13.2°
Duration
253.70°
Valve Overlap
17.6°
9 - 1316
ENGINE - 4.7L SERVICE INFORMATION
WK
VALVES
DESCRIPTION
SPECIFICATION
Face Angle
45° - 45.5°
Head Diameter
Intake
48.52 - 48.78 mm
(1.9103 - 1.9205 in.)
Exhaust
36.87 - 37.13 mm
(1.4516 - 1.4618 in.)
Length (Overall)
Intake
113.45 - 114.21 mm
(4.4666 - 4.4965)
Exhaust
114.92 - 115.68 mm
(4.5244 - 4.5543 in.)
Stem Diameter
Intake
6.931 - 6.957 mm
(0.2729 - 0.2739 in.)
Exhaust
6.902 - 6.928 mm
(0.2717 - 0.2728 in.)
Stem - to - Guide Clearance
Intake
0.018 - 0.069 mm
(0.0008 - 0.0028 in.)
Exhaust
0.047 - 0.098 mm
(0.0019 - 0.0039 in.)
Max. Allowable Stem - to - Guide Clearance (Rocking
Method)
Intake
0.069 mm (0.0028 in.)
Exhaust
0.098 mm (0.0039 in.)
Valve Lift (Zero Lash)
Intake
11.25 mm (0.443 in.)
Exhaust
10.90 mm (0.4292 in.)
VALVE SPRING
DESCRIPTION
SPECIFICATION
Free Length (Approx)
Intake
49.0 mm (1.9291 in.)
Exhaust
49.0 mm (1.9291 in.)
Spring Force (Valve Closed)
Intake and Exhaust
313.0 - 354.0 N @ 40.12 mm
(70.365 - 79.582 lbs. @ 1.5795 in.)
Spring Force (Valve Open)
Intake and Exhaust
776.0 - 870.0 N @ 28.88 mm
(174.451 - 195.583 lbs. @ 1.137 in.)
WK
ENGINE - 4.7L SERVICE INFORMATION
9 - 1317
DESCRIPTION
SPECIFICATION
Number of Coils
Intake
7.3
Exhaust
7.3
Wire Diameter
Intake and Exhaust
4.6 × 3.67mm
(0.1811 - 0.1445 in.)
Installed Height (Spring Seat to Bottom of Retainer)
Nominal
Intake
40.12 mm (1.579 in.)
Exhaust
40.12 mm (1.579 in.)
CYLINDER HEAD
DESCRIPTION
SPECIFICATION
Gasket Thickness (Compressed)
0.7 mm (0.0276 in.)
Valve Seat Angle
44.5° - 45.0°
Valve Seat Runout (MAX)
0.051 mm (0.002 in.)
Valve Seat Width
Intake
1.75 - 2.36 mm
(0.0698 - 0.0928 in.)
Exhaust
1.71 - 2.32 mm
(0.0673 - 0.0911 in.)
Guide Bore Diameter (Std.)
6.975 - 7.00 mm
(0.2747 - 0.2756 in.)
Cylinder Head Warpage (Flatness)
0.0508 mm (0.002 in.)
OIL PUMP
DESCRIPTION
SPECIFICATION
Clearance Over Rotors/End Face (MAX)
0.095 mm (0.0038 in.)
Cover Out - of -Flat (MAX)
0.025 mm (0.001 in.)
Inner and Outer Rotor Thickness
12.02 mm (0.4731 in.)
Outer Rotor to pocket (Diametral) clearance (MAX)
.235 mm (.0093 in.)
Outer Rotor Diameter (MIN)
85.925 mm (0.400 in.)
Tip Clearance Between Rotors (MAX)
0.150 mm (0.006 in.)
OIL PRESSURE
SPECIFICATION
SPECIFICATION
At Curb Idle Speed (MIN)*
48 kPa (7 psi)
@ 3000 rpm
240 - 725 kPa (35 - 105 psi)
* CAUTION: If pressure is zero at curb idle, DO NOT run engine at 3000 rpm.
9 - 1318
ENGINE - 4.7L SERVICE INFORMATION
WK
TORQUE
DESCRIPTION
N·m
Ft.
In.
Lbs.
Lbs.
Camshaft
Non - Oiled Sprocket Bolt
122
90
—
Bearing Cap Bolts
11
—
100
Timing Chain Cover—Bolts
58
43
—
Connecting Rod Cap—Bolts
27
20
—
PLUS 90° TURN
Bed Plate—Bolts
Refer to Procedure
Cylinder Head—Bolts
Refer to Procedure
Crankshaft Damper—Bolt
175
130
—
Cylinder Head Cover—Bolts
12
—
105
Exhaust Manifold—Bolts
25
18
—
Exhaust Manifold Heat Shield—Nuts
8
—
72
Then loosen 45°
Flexplate—Bolts
60
45
—
Engine Mount Bracket to Block—Bolts
61
45
—
Rear Mount to Transmission—Bolts
46
34
—
Generator Mounting—Bolts
M10 Bolts
54
40
—
M8 Bolts
28
—
250
Intake Manifold—Bolts
12
—
105
Refer to Procedure for
Tightening Sequence
Oil Pan—Bolts
15
—
130
Oil Pan—Drain Plug
34
25
—
Oil Pump—Bolts
28
—
250
Oil Pump Cover—Bolts
12
—
105
Oil Pickup Tube—Bolt and Nut
28
—
250
Oil Dipstick Tube to Engine
Block—Bolt
15
—
130
Oil Fill Tube—Bolts
12
—
105
Timing Chain Guide—Bolts
28
—
250
Timing Chain Tensioner Arm—Special
Pin Bolt
17
—
150
Hydraulic Tensioner—Bolts
28
—
250
Timing Chain Primary Tensioner—Bolts
28
—
250
Timing Drive Idler Sprocket—Bolt
34
25
—
Thermostat Housing—Bolts
13
—
115
Water Pump—Bolts
58
43
—
WK
ENGINE - 4.7L SERVICE INFORMATION
9 - 1319
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