Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 29-01-2008, 06:59   #1
Registered User

Join Date: Apr 2007
Location: Humacao, Puerto Rico
Boat: Beneteau 456
Posts: 428
Images: 8
Perkins Injector Repair Manual

I would like to learn how to rebuild the injectors on my 4108. Is there a manual that explains the procedure?

avazquez is offline   Reply With Quote
Old 29-01-2008, 07:08   #2
Moderator Emeritus
GordMay's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 29,341
Images: 240
I wouldn’t think so, but you could see if these Perkins Shop Manuals tell you what you need to know:

Chapter “N”

Starting page 50

Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"

GordMay is online now   Reply With Quote
Old 29-01-2008, 09:27   #3
Registered User

Join Date: Jun 2005
Posts: 1,901
This isn't a job I recommend for the average mechanically inclined individual. There are some sensitive parts inside, and require a clean room to build.
never monday is offline   Reply With Quote
Old 29-01-2008, 10:10   #4
Registered User

Join Date: Apr 2007
Location: Humacao, Puerto Rico
Boat: Beneteau 456
Posts: 428
Images: 8

I have worked extensively on the old 500 kva White Superior engines and their injectors. Of course every system has its tricks but I am sure anyone with common sense and a good set of appropriate tools and manuals can figure out how to repair a simple mechanical device. I try to learn how to repair most or all of the systems and components in my boat. It gives me a lot of security.
avazquez is offline   Reply With Quote
Old 29-01-2008, 10:39   #5
Senior Cruiser
Alan Wheeler's Avatar

Cruisers Forum Supporter

Join Date: Dec 2003
Location: Marlborough Sounds. New Zealand
Boat: Hartley Tahitian 45ft. Leisure Lady
Posts: 8,038
Images: 102
Injectors are actually quite simple to fix. As long as you know what you are doing of course. But the "sticky" issue is that they require special test gear to set back up again. You will need a test pump. Can't remember the actual name sorry(oh my memory is bad) It is a hand operated pressure pump. The injector is fitted and you pull done the handle to build up pressure till the injector seat opens. Thee is a pressure gauge that tells you what the pressure is. Then you give the handle a thump to "crack" the "seat" open and watch the "cracking Point" pressure. While at the same time viewing the spray pattern. This pattern is also important and something you learn in your trade. Not something easily explained here.
An injector service person will have a range of spares. There are some internal parts that you will replace and some internal parts are simply adjusted. In the early life (still several thousands of hrs) of the injector, the repair maybe a simple clean and adjustment of the pressure spring. Oh and the fuel used to calibrate is a special grade fuel oil.
In my view, for the equipment one would need to do the job and the relatively cheap cost of having a pro do the job and the vast number of hrs between the job, it is simply not worth doing it yourself. It is also very very easy to damage the very small injector tip. You onley have to drop the thing and have it land butterside down, and you are up for a new tip. That is somewhat expensive.

For God so loved the world..........He didn't send a committee.
Alan Wheeler is offline   Reply With Quote


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel Injector Servicing Chief Engineer Classifieds Archive 2 27-07-2007 18:55
Manual / Handbook for Perkins. Dave-Fethiye Engines and Propulsion Systems 18 08-06-2007 11:45
need VHF gelcoat repair and diesel repair converted to DVD schoonerdog General Sailing Forum 6 05-04-2007 19:23
Injector inspection?? Wmiii Engines and Propulsion Systems 23 29-01-2007 02:59
s2 9.2 owners manual Jayne W Engines and Propulsion Systems 0 26-08-2003 11:27

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 03:42.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.