Volvo Penta 230, 250, 251DOHC AQ131, AQ151, AQ171 Engine Workshop Manual_427065166 – PDF DOWNLOAD

Description

Volvo Penta 230, 250, 251DOHC AQ131, AQ151, AQ171 Engine Workshop Manual_427065166 – PDF DOWNLOAD

FILE DETAILS:

Volvo Penta 230, 250, 251DOHC AQ131, AQ151, AQ171 Engine Workshop Manual_427065166 – PDF DOWNLOAD

Language : English
Pages : 102
Downloadable : Yes
File Type : PDF

TABLE OF CONTENTS:

Volvo Penta 230, 250, 251DOHC AQ131, AQ151, AQ171 Engine Workshop Manual_427065166 – PDF DOWNLOAD

Safety Precautions 2
General information 5
Repair instructions 6
Presentation 8
Trouble-shooting Scheme 11
1 Overhaul Data 12
2 Special Tools 20
3 Electrical System 23
Wiring Diagram AQ131, AQ151, 230, 250 Alt 1 24
Wiring Diagram 230, 250 Alt 2 26
Wiring Diagram AQ171, 251DOHC Alt 1 28
Wiring Diagram 251DOHC Alt 2 30
4A Fuel System 32
Trouble shooting and Remedies Fuel System 32
Overhauling and checking the carburetor 33
4B Renix Ignition System 38
Trouble-shooting and repair ignition system 251DOHC, AQ171 38
4C Cylinder Head 44
Removal of teh external components 44
4D Cooling System 48
Overhauling the heat exchanger 48
Overhauling the sea water pump 49
Check the thermostat 49
4E Overhauling the valve system 50
Overhauling the valve system 230, 250, AQ131, AQ151 50
Adjusting the valves 230, 250, AQ131, AQ151 59
Valve system 251DOHC, AQ171 Technical Description 61
Overhauling the valve system 251DOHC, AQ171 63
4F Installing the toothed belt 71
Installing the toothed belt 230, 250, AQ131, AQ151 71
Installing the toothed belt 251DOHC, AQ171 73
4G Installing the external components of the Cylinder Head 74
5 Cylinder Block 78
5A Removing the external components 78
5B Overhauling the Crank Assembly 80
The lubricating oil pump Overhauling 87
5C Installing the external components 93
Overhauling the oil cooler 250, 251DOHC, AQ151, AQ171 95

DESCRIPTION:

Volvo Penta 230, 250, 251DOHC AQ131, AQ151, AQ171 Engine Workshop Manual_427065166 – PDF DOWNLOAD

Introduction:

• This Workshop Manual contains technical data, de- scriptions and repair instructions for Volvo
  Penta prod- ucts or product versions contained in the contents list. Ensure that the correct
  workshop literature is being used.
• Read the safety information and the Workshop Manual “General Information” and “Repair Instruc-
  tions” carefully before starting work.

General information:
About the workshop manual:

• This workshop manual contains technical specifica- tion, descriptions and instructions for
  repairing the standard versions of the following engines 230, 250, 251DOHC, AQ131, AQ151 and AQ171.
  The product designation and number should be given in all corre- spondence about the product.
• This Workshop Manual has been developed primarily for Volvo Penta service workshops and qualified
  per- sonnel. Persons using this book are assumed to have a grounding in marine drive systems and be
  able to carry out related mechanical and electrical work.
• Volvo Penta is continuously developing their prod- ucts. We therefore reserve the right to make
  changes. All the information contained in this book is based on product data available at the time
  of going to print. Any essential changes or modifications in- troduced into production or updated
  or revised ser- vice methods introduced after the date of publication will be provided in the form
  of Service Bulletins.

Replacement parts:
Replacement parts for electrical and fuel systems are subject to statutory requirements (US Coast
Guard Safety Regulations for example). Volvo Penta Genuine parts meet these requirements. Any type
of damage which results from the use of non-original Volvo Penta replacement parts for the product
will not be covered under any warranty provided by Vol-
vo Penta.

IMAGES PREVIEW OF THE MANUAL:

Questions? Email us: [email protected]

PLEASE NOTE:

• This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
• Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.

S.V