Dodge Dakota (ND). Manual — part 813
VALVE SPRING
DESCRIPTION
SPECIFICATION
Metric
Standard
Free Length (Approx)
Intake
48.18 mm
1.896 in.
Exhaust - w/damper
48.2 mm
1.897 in.
Spring Force (Valve Closed)
Intake
332.0 - 368.0 N @ 40.12 mm
74.63 - 82.72 lbs. @ 1.5795 in.
Exhaust - (without damper)
356 - 394 N @ 39.12 mm
80.031 - 88.57 lbs. @ 1.54 in.
Spring Force (Valve Open)
Intake
948.0 - 1038.0 N @ 28.12 mm
213.2 - 233.8 lbs. @ 1.107 in.
Exhaust - without damper
974 - 956 N @ 27.12 mm
218.8 - 215.1 lbs. @ 1.067 in.
Number of Coils
Intake
7.30
Exhaust
7.15
Wire Diameter
Intake
4.77 × 3.80mm
0.1878 × 0.1496 in.
Exhaust
4.66 × 3.72mm
0.1843 × .1464 in.
Installed Height (Spring Seat to
Bottom of Retainer)
Nominal
Intake
40.12 mm
1.579 in.
Exhaust - w/damper
40.12 mm
1.579 in.
CYLINDER HEAD
DESCRIPTION
SPECIFICATION
Metric
Standard
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.
9 - 790
ENGINE - 3.7L SERVICE INFORMATION
ND
OIL PUMP
DESCRIPTION
SPECIFICATION
Metric
Standard
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
Metric
Standard
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 at 3000 rpm.
TORQUE
DESCRIPTION
N·m
Ft. Lbs.
In. Lbs.
Camshaft
Non - Oiled Sprocket Bolt
122
90
-
Bearing Cap Bolts
11
-
100
Counterbalance Shaft Retaining Bbolt
28
-
250
Timing Chain Cover Bolts
58
43
-
Connecting Rod Cap Bolts
27
20
-
PLUS 90° TURN
Bed Plate Bolts
Refer to Procedure
Crankshaft Damper Bolt
175
130
-
Cylinder Head Bolts
M11 Bolts
Refer To Procedure
M8 Bolts
Refer To Procedure
Cylinder Head Cover Bolts
12
-
105
Exhaust Manifold Bolts
25
18
-
Exhaust Manifold Heat Shield Nuts
8
-
72
Then loosen 45°
Flexplate Bolts
95
70
-
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
ND
ENGINE - 3.7L SERVICE INFORMATION
9 - 791
DESCRIPTION
N·m
Ft. Lbs.
In. Lbs.
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
28
-
250
Hydraulic Tensioner Bolts
28
-
250
Timing Chain Primary Tensioner Bolts
28
-
250
Timing Drive Idler Sprocket Bolt
34
25
-
Thermostat Housing Bolts
12
-
105
Water Pump Bolts
58
43
-
9 - 792
ENGINE - 3.7L SERVICE INFORMATION
ND
SPECIAL TOOLS
3.7L ENGINE
Spanner Wrench - 6958
Adapter Pins 8346
Front Crankshaft Seal Remover 8511
Front Crankshaft Seal Installer 8348
HANDLE C-4171
Rear Crankshaft Seal Installer 8349
Rear Crankshaft Seal Remover 8506
ND
ENGINE - 3.7L SERVICE INFORMATION
9 - 793
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