Jeep Grand Cherokee WK. Manual - part 1215

 

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Jeep Grand Cherokee WK. Manual - part 1215

 

 

VALVE TIMING

DESCRIPTION

SPECIFICATION

Intake

Opens (BTDC)

7.0°

Closes (ATDC)

253.0°

Exhaust

Opens (BTDC)

233°

Closes (ATDC)

27°

Duration

253.70°

Valve Overlap

34°

CYLINDER HEAD

DESCRIPTION

SPECIFICATION

Valve Seat Angle

44.5° - 45.0°

Valve Seat Runout (MAX)

0.05 mm (0.0019 in.)

Valve Seat Width (Finish)

Intake

1.018 - 1.62 mm

(0.0464 - 0.0637 in.)

Exhaust

1.48 - 1.92 mm

(0.0582 - 0.0755 in.)

Guide Bore Diameter (Std.)

7.975 - 8.00 mm

(0.313 - 0.314 in.)

HYDRAULIC TAPPETS

DESCRIPTION

SPECIFICATION

Metric

Standard

Body Diameter

21.387 - 21.405 mm

0.8420 - 0.8427 in.

Clearance (To Bore)

0.020 - 0.063 mm

0.0007 - 0.0024 in.

Dry Lash

3.0 mm (at the valve)

0.1181 in.

VALVES

DESCRIPTION

SPECIFICATION

Face Angle

45.0° - 45.5°

Head Diameter

Intake

50.67 - 50.93 mm

(1.99 - 2.00 in.)

Exhaust

39.27 - 39.53 mm

(1.54 - 1.55 in.)

Length (Overall)

Intake

123.38 - 123.76 mm

9 - 1456

ENGINE - 5.7L SERVICE INFORMATION

WK

DESCRIPTION

SPECIFICATION

(4.857 - 4.872 in.)

Exhaust

120.475 - 120.855 mm

(4.743 - 4.758 in.)

Stem Diameter

Intake

7.935 - 7.953 mm

(0.312 - 0.313 in.)

Exhaust

7.905 - 7.925 mm

(0.311 - 0.312 in.)

Stem - to - Guide Clearance

Intake

0.022 - 0.065 mm

(0.0008 - 0.0025 in.)

Exhaust

0.050 - 0.095 mm

(0.0019 - 0.0037 in.)

Valve Lift ( @ Zero Lash)

Intake

12.0 mm (0.472 in.)

Exhaust

11.70 mm (0.460 in.)

VALVE SPRING

DESCRIPTION

SPECIFICATION

Spring Force (Valve Closed)

Intake and Exhaust

418.0 N +/- 30.0 N @ 46 mm
(93.0 lbs +/- 7.0 lbs. @ 1.811 in.)

Spring Force (Valve Open)

1077.0 N +/- 47.0 N @ 33.6 mm.

Intake and Exhaust

( 242.0 lbs. +/- 11 lbs. @ 1.322 in. )

Free Length (approx)

57.3 mm (2.256 in.)

Number of Coils

Intake and Exhaust

7.4

Wire Diameter

Intake and Exhaust

5.39 × 4.52 mm

(0.212 - 0.177 in.)

Installed Height (Spring Seat to Bottom of Retainer)

Intake and Exhaust

46.0 mm (1.81 in.)

OIL PUMP

DESCRIPTION

SPECIFICATION

Clearance Over Rotors (MAX)

0.095 mm (0.0038 in.)

Outer Rotor to Pump Body Clearance (MAX)

.235 mm (.009 in.)

Tip Clearance Between Rotors (MAX)

0.150 mm (0.006 in.)

WK

ENGINE - 5.7L SERVICE INFORMATION

9 - 1457

OIL PRESSURE

SPECIFICATION

SPECIFICATION

At Curb Idle Speed (MIN)*

25 kPa (4 psi)

@ 3000 rpm

170 - 758 kPa (25 - 110 psi)

* CAUTION: If pressure is zero at curb idle, DO NOT run engine

TORQUE

TORQUE CHART 5.7L ENGINE

DESCRIPTION

N·m

Ft.

In.

Lbs.

Lbs.

Block Pipe Plugs
(1/4 NPT)

20

177

(3/8 NPT)

27

240

Camshaft Sprocket—Bolt

122

90

Camshaft Tensioner Plate—Bolts

28

250

Timing Chain Case Cover—Bolts

28

250

Lifting Stud

55

40

Connecting Rod Cap—Bolts

21

plus 90° Turn

15

plus 90° Turn

Main Bearing Cap—Bolts
M-12

27

plus 90° Turn

Crossbolts
M-8

28

Cylinder Head—Bolts
M-12 Bolts

Step 1

34

25

Step 2

54

40

Step 3

Turn 90°

Turn 90°

M-8 Bolts

Step 1

20

15

Step 2

34

25

Cylinder Head Cover—Bolts

8

70

Exhaust Manifold to Cylinder Head

25

220

Flexplate to crankshaft—Bolts

95

70

Flywheel to crankshaft—Bolts

75

55

Front Insulator—Through bolt/nut

95

70

Front Insulator to Block—Bolts

95

70

Generator—Mounting Bolt

55

40

Intake Manifold—Bolts

Refer to Procedure

Lifter Guide Holder

12

106

Oil Pan Bolts

12

-

105

Oil Dipstick Tube

12

105

Oil Pan—Drain Plug

27

20

Oil Pump—Attaching Bolts

28

250

9 - 1458

ENGINE - 5.7L SERVICE INFORMATION

WK

DESCRIPTION

N·m

Ft.

In.

Oil Pump Pickup Tube – Bolt and Nut

28

250

Rear Seal Retainer Attaching Bolts

15

132

Rear Insulator to Bracket—

68

50

Rear Insulator to Crossmember

41

30

Rear Insulator to Transmission—

68

50

Rear Insulator Bracket—Bolts

68

50

Rocker Arm—Bolts

22

195

Spark Plugs

Thermostat Housing—Bolts

28

250

Throttle Body—Bolts

12

105

Vibration Damper—Bolt

176

129

Water Pump to Timing Chain

28

250

Case Cover—Bolts

WK

ENGINE - 5.7L SERVICE INFORMATION

9 - 1459

 

 

 

 

 

 

 

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