Volvo Penta 251DOHC Manuals

Manuals and User Guides for Volvo Penta 251DOHC. We have 2 Volvo Penta 251DOHC manuals available for free PDF download: Workshop Manual

Volvo Penta 251DOHC Workshop Manual

Volvo Penta 251DOHC Workshop Manual (102 pages)

Brand: Volvo Penta | Category: Engine | Size: 26 MB

Table of Contents

Index
3
Safety Precautions
4
Repair Instruction
8
Our Joint Responsibility
8
Tightening Torques
8
Tightening Torques-Protractor Tightening
9
Sealants
9
Tolerance Classes
9
Presentation
10
The Cooling System
11
The Lubricating System
12
Troubleshooting Scheme
13
Overhaul Data
14
Special Tools
22
Electrical System
25
Ignition System
25
Motor
25
Wiring Diagram AQ131, AQ151, 230, 250
26
Wiring Diagram 230, 250
28
Wiring Diagram AQ171, 251DOHC
30
Wiring Diagram 251DOHC
32
4A Cylinder Head
34
Troubleshooting and Remedies Fuel System
34
Overhauling and Checking the Carburetor
35
Renix Ignition System
40
Troubleshooting and Repair Ignition System 251DOHC, AQ171
40
Ignition Position Sender
40
Control Unit
40
The Function
41
The Flywheel
41
Speed Control
41
Signal Processing
41
Troubleshooting RENIX
42
Check the Feed Voltage
43
Check the Ground Connection
43
Check the Crankshaft Position Sender
43
Check the Ignition Coil
43
Checking the Control Unit
44
Checking the Ignition, the Speed Limit
44
Checking the Setting of the Crankshaft Position Sender
44
Checking the Toothed Belt against the Markings
44
Changing the Rotor 251DOHC, AQ171
45
Cylinder Head - Removal of the External Components
46
Cooling System
50
Overhauling the Heat Exchanger
50
The Seawater Pump
51
The Thermostat
51
Overhauling the Valve System
52
Changing the Valve Guide
54
The Valve Seat
55
Assembling the Cylinder Head
58
Adjusting the Valves 230, 250, AQ131, AQ151
61
Valve Adjustment Kit for 230, 250, AQ131, AQ151
62
Overhauling the Valve System 251DOHC, AQ171
63
Fault-Tracing Valve Tappets
64
Changing the Valve Guides
67
Changing the Valve Seat
68
Assembling the Cylinder Head - Procedure
69
Sealant for the Camshaft Carrier
70
Installing the Toothed Belt
73
Installing the Toothed Belt 230, 250, AQ131, AQ151
73
Installing the Toothed Belt 251DOHC, AQ171
75
Installing the External Components of the Cylinder Head
76
The Cylinder Block
80
Removing the External Components of the Cylinder Block
80
Overhauling the Crank Assembly
82
The Cylinder Bores
85
Piston Rings
86
The Piston Pin
86
The Lubricating Oil Pump Overhauling
89
Overhauling the Flywheel Housing
91
Installing the External Components
95
The Distributor 230, 250, AQ131-151
95
Overhauling the Oil Cooler 250, 251DOHC, AQ151, AQ171
97

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Volvo Penta 251DOHC Workshop Manual

Volvo Penta 251DOHC Workshop Manual (102 pages)

Brand: Volvo Penta | Category: Engine | Size: 88 MB

Table of Contents

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