Dodge Ram Truck 1500-2500-3500. Manual — part 1380
PISTONS
DESCRIPTION
SPECIFICATION
Metric
Standard
Piston Size
102.314-102.332 mm.
4.0281-4.0288 in.
Clearance at Top of Skirt (12 mm
from bottom)
0.025-0.055 mm.
0.0010-0.0022 in.
Land Clearance (Diametrical)
0.771-0.808 mm
-0.036–0.042 in.
Weight
429-439 grams
15.13-15.49 oz.
Piston Length
57.0 mm
2.24 in.
Piston Pin Boar Diameter
23.940-23.978 mm
0.9425-0.9440 in.
Piston Pin Boar Offset
0.800 mm
0.031 in.
Piston Ring Groove Depth No.1
91.55-91.88 mm
3.604-3.614 in.
Piston Ring Groove Depth No.2
90.75-91.00 mm
3.573-3.583 in.
Piston Ring Groove Depth No.3
92.53-92.79 mm
3.643-3.653 in.
PISTON PINS
DESCRIPTION
SPECIFICATION
Metric
Standard
Clearance in Piston
0.009-0.022 mm
0.0004-0.0009 in.
Clearance in Connecting Rod
0.017-0.061 mm
0.0007-0.0024 in.
Diameter
23.995-24.000 mm
0.9447-0.9449 in.
Length
73.35 mm
2.888 in.
End Play
None
PISTON RING
DESCRIPTION
SPECIFICATION
Metric
Standard
Piston Ring End Gap
Top Compression Ring
0.20-0.36 mm
0.008-0.014 in.
Second Compression Ring
0.56-0.79 mm
0.022-0.031 in.
Oil Control (Steel Rails)
0.25-0.76 mm
0.010-0.030 in.
Wear Limit-Top Compression Ring
0.63 mm
0.025 in.
Wear Limit-2nd Compression Ring
1.40 mm
0.055 in.
Wear Limit-Oil Control Steel Rails
1.64 mm
0.065 in.
Piston Ring Side Clearance
Top and 2nd Compression Ring
0.040-0.085 mm
0.0016-0.0033 in.
Oil Ring (Steel Ring)
0.046-0.201 mm
0.0018-0.0079 in.
Wear Limit- Top and 2nd Ring
0.10 mm
0.004 in.
Wear Limit Oil Ring Pack
0.216 mm
0.0085 in.
Piston Ring Width
Compression Rings
1.407-1.490 mm
0.0579-0.0586 in.
Oil Ring (Steel Rails)
0.447-0.473 mm
0.0176-0.0186 in.
9 - 2442
ENGINE - 8.3L - SERVICE INFORMATION
DR/DH
CAMSHAFT
DESCRIPTION
SPECIFICATION
Metric
Standard
Lift
8.13 mm
0.320 in.
Journal Diameter 1-6
53.09-53.11 mm
2.090-2.091 in.
Boar Diameter No.1-6
53.16-53.19 mm
2.093-2.094 in.
Diametrical Clearance
0.051-0.102 mm
0.002-0.004 in.
Max. Allowable
0.127 mm
0.005 in.
End Play
0.127-0.381 mm
0.005-0.015 in.
Valve Timing-Exhaust Valve
Closes (ATC)
36.5°
Opens (BBC)
88.5°
Duration
305.0°
Valve Timing-Intake Valve
Closes (BTDC)
86.5°
Opens
23.5°
Duration
297.0°
Valve Overlap
60.0°
HYDRAULIC TAPPETS
DESCRIPTION
SPECIFICATION
Metric
Standard
Body Diameter
22.949-22.962 mm
0.9035-0.9040 in.
Clearance in Block
0.013-0.043 mm
0.0005-0.0017 in.
Plunger Travel (Dry)
4.24 mm
0.167 in.
Push Rod Length (Overall)
193.22-193.73 mm
7.607-7.627 in.
CYLINDER HEAD
DESCRIPTION
SPECIFICATION
Metric
Standard
Gasket Thickness (Compressed)
1.35 mm
0.053 in.
CYLINDER HEAD VALVE SEAT
DESCRIPTION
SPECIFICATION
Metric
Standard
Seat Angle
44°-44.5°
Runout (Max.)
0.038 mm
0.002 in.
Width (Finish) Intake and Exhaust
1.02-1.52 mm
0.040-0.060 in.
Guide Bore Diameter (Std.)
7.95-7.98 mm
0.313-0.314 in.
DR/DH
ENGINE - 8.3L - SERVICE INFORMATION
9 - 2443
VALVES
DESCRIPTION
SPECIFICATION
Metric
Standard
Face Angle
45-45.5°
Back Cut Angle
25°-29°
Stem Diameter-Intake and Exhaust
7.90-7.92 mm
0.331-0.312 in.
Head Diameter-Intake
50.67-50.93 mm
1.995-2.005 in.
Head Diameter-Exhaust
40.01-40.26 mm
1.575-1.585 in.
Length-Intake (Over All)
145.69-146.33 mm
5.736-5.761 in.
Length-Exhaust (Over All)
146.23-146.86 mm
5.757-5.782 in.
Valve Margin-Intake
1.30 mm
0.051 in.
Valve Margin-Exhaust
2.03 mm
0.080 in.
Lift-Intake (Zero Lash
14.06 mm
0.554 in.
Lift-Exhaust (Zero Lash)
14.06 mm
0.554 in.
Valve Stem Tip Height
52.96 mm
2.085 in.
Stem-to-Guide Clearance-Intake
and Exhaust
0.025-0.076 mm
0.001-0.003 in.
Max. Allowable-Intake (Rocking
Method)
0.50 mm
0.020 in.
Max. Allowable-Exhaust (Rocking
Method)
0.70 mm
0.027 in.
VALVE SPRING
DESCRIPTION
SPECIFICATION
Metric
Standard
Free Length - Spring
55.0 mm
2.165 in.
Free Length - Spring Damper
47 mm
1.850 in.
Spring Tension (Valve Closed)
534 ± 20 N @ 44.5 mm
120 ± 4.5 lbs. @ 1.750 in.
Spring Tension (Valve Open)
1245 ± 40 N @ 30.6 mm
280 ± 9.0 lbs. @ 1.207 in.
Number of Coils - Spring
7.25 Right Hand Twist
Number of Coils - Spring Damper
3.6 to 4.0 Left Hand Twist
Wire Diameter (Ovate)
4.2 x 5.3 mm
0.166 x 0.208 in.
Installed Height (Spring Seat to
Bottom of Retainer)
44.5 mm
1.750 in.
LUBRICATION
DESCRIPTION
SPECIFICATION
Metric
Standard
At Curb Idle Speed* (Minimum with
engine at operating temperature)
68.9 kPa
10 psi
At 3000 RPM
310-517 kPa
45-75 psi
CAUTION:
*If pressure is ZERO at curb idle, DO NOT run engine at 3000 rpm.
9 - 2444
ENGINE - 8.3L - SERVICE INFORMATION
DR/DH
OIL PUMP
DESCRIPTION
SPECIFICATION
Metric
Standard
Clearance Over Rotors (Max.)
0.077 mm
0.003 in.
Cover Out-Of-Flat (Max.)
0.076 mm
0.003 in.
Inner Rotor Thickness (Min.)
18.92 mm
0.744 in.
Clearance (Max.)
0.19 mm
0.007 in.
Diameter (Min.)
82.45 mm
3.246 in.
Thickness (Min.)
18.92 mm
0.744 in.
Tip Clearance Between Rotors
(Max)
0.150 mm
0.0068 in.
TORQUE
DESCRIPTION
N·m
Ft. Lbs.
In. Lbs.
Bolts-A/C Compressor Mounting
23
-
200
Bolts-A/C Compressor Bracket
23
-
200
Bolt-Camshaft Position Sensor
11
-
95
Bolts-Camshaft Sprocket
23
-
200
Bolts-Camshaft Thrust Plate
24
-
210
Bolts-Connecting Rod Cap
68
50
-
Bolts-Crankshaft Main Bearing Cap
(Refer to CRANKSHAFT -
INSTALLATION)
Nuts-Crankshaft Oil Scraper
23
-
200
Bolts-Crankshaft Pulley
23
-
200
Bolt-Crankshaft Vibration Damper
176
130
-
Bolts-Cylinder Head
(Refer to CYLINDER HEAD -
INSTALLATION)
Bolts/Studs-Cylinder Head Cover
11
-
95
Exhaust Manifold
23
-
200
Exhaust Pipe to Exhaust Manifold
34
25
-
Bolts-Engine Mount Bracket-to-Block
41
30
-
Nuts-Engine Mount Insulator
102
75
-
Bolts-Flywheel to Crankshaft
75
55
-
Bolts-Generator Mounting
41
30
-
Bolts-Intake Manifold
11
-
95
Bolts-Oil Cooler
5
-
40
Oil Cooler Line Fitting
68
50
-
Bolts-Oil Pan
1/4–20
11
-
95
5/16–18
23
-
200
Plug-Oil Pan Drain
34
25
-
Plug-Oil Pressure Relief Valve
34
25
-
Bolts-Oil Pump Cover
23
-
200
Oil Pump Pick-up Tube
Bolt 1/4–20
11
-
95
DR/DH
ENGINE - 8.3L - SERVICE INFORMATION
9 - 2445
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