Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-15-2013, 11:35 PM   #1
Guru
 
Daddyo's Avatar
 
City: Cruising East Coast US
Vessel Name: Grace
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 2,405
Pulling Injectors on a Lehman120

Has anyone ever pulled their injectors? Any issues to consider? Do you need the special tool? I'm thinking about servicing mine before headed south in a month.
__________________
Cruiser
Esse Quam Videri
Daddyo is offline   Reply With Quote
Old 09-16-2013, 06:00 AM   #2
Guru
 
psneeld's Avatar
 
City: Ft Pierce
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 24,234
When mine were pulled a couple years back (I assisted a mechanic because the Lehman was new to me)..

No special tools..there are crush washers used under the return line banjo bolts so get those from someplace...sorry I don't have a size so for a reasonable price American Diesel isn't ripping you off and saves the searching.

I asked in another thread but didn't get a reply....when we did it, the mech thought we had to and removed the rocker arm. I thought that was crazy but to get to the injectors he saw it as they way...maybe that's where a special tool comes in...but it can be done without one. After removing and replacing the rocker arm, we adjusted the valves to a Lehman 135 specs due to a mixup from the previous owner telling me that's what the engine was.

It ran fine from Ft Lauderdale to NJ and for a year till when ordering parts from American Diesel they started to wonder and a reference to some other part numbers and they convinced themselves and me that I really had a 120. So in talking to them...they say it was probably OK that I had used the 135 valve clearances than had it been a 135 and used 120 valve clearances...I redid the clearances...pretty easy/simple job...but being a single I have plenty of room to work.
psneeld is offline   Reply With Quote
Old 09-16-2013, 08:42 AM   #3
Guru
 
Capthead's Avatar
 
City: Long Beach, CA
Vessel Name: Heads Up
Vessel Model: Grand Banks 42 Classic
Join Date: Mar 2013
Posts: 956
I have to do this to my twins. Can you post pictures and a how to? I'd appreciate it. I have lots of tools and I bought a socket for the crank nut to turn the engine over. Just haven't had the urge to "get 'er done".
Capthead is offline   Reply With Quote
Old 09-16-2013, 11:46 PM   #4
Guru
 
Xsbank's Avatar
 
City: Pender Harbour, BC
Vessel Name: Gwaii Haanas
Vessel Model: Custom Aluminum 52
Join Date: Sep 2013
Posts: 3,791
Its easy, Stretch, no special tools, don't take off the rocker arms, you can anneal the copper washers and re-use them. Take the injectors to a farm shop, same injectors as used on some combines and tractors; don't take them to a "marine" specialist and pay double. Good time to check the cyl head torque and re-set the valves (if memory serves the engine has to be operating temperature?). If you haven't done this for a while the rubber seals on the side of the head might be stiff or brittle, but they should be easy to replace if they are. They don't have to be too tight.
When I put my new injectors in, I didn't need to bleed them, the old dear just started right up. i did undo each injector in sequence to make sure they were all working (I did find one injector that was dead after servicing!) and then I put the valve cover back. She's even noisier with the valve cover off, don't forget ear protection and some sort of goggles for the oil.
Be very gentle with the fuel pipes as they are expensive and a bit rare.
Xsbank is offline   Reply With Quote
Old 09-17-2013, 07:53 AM   #5
Guru
 
Capthead's Avatar
 
City: Long Beach, CA
Vessel Name: Heads Up
Vessel Model: Grand Banks 42 Classic
Join Date: Mar 2013
Posts: 956
THANK YOU!! Just a shout out to you.

I'll tackle this in the winter months after my deck replacement.
Capthead is offline   Reply With Quote
Old 09-17-2013, 03:42 PM   #6
yo
Veteran Member
 
yo's Avatar
 
Join Date: Sep 2011
Posts: 78
XsBank do you have a 120 lehman ?



Mike
yo is offline   Reply With Quote
Old 09-17-2013, 06:09 PM   #7
Guru
 
Xsbank's Avatar
 
City: Pender Harbour, BC
Vessel Name: Gwaii Haanas
Vessel Model: Custom Aluminum 52
Join Date: Sep 2013
Posts: 3,791
I did, I had to sell my lovely GB32 because I had to move for a job and now I'm back on the Wet Coast and I'm looking for her replacement. Not necessarily a GB.
Xsbank is offline   Reply With Quote
Old 09-17-2013, 06:24 PM   #8
yo
Veteran Member
 
yo's Avatar
 
Join Date: Sep 2011
Posts: 78
XsBank thanks for the tip about the injectors found at farm equipment stores. I'll check then out.

Mike
yo is offline   Reply With Quote
Old 09-17-2013, 10:57 PM   #9
Senior Member
 
av8r's Avatar
 
City: Anacortes
Vessel Name: Selah
Vessel Model: Ocean Alexander 40
Join Date: Dec 2011
Posts: 274
Much easier to pull the injectors if you unbolt the entire rocker shaft and get it out of the way.
American Diesel has all the parts including copper injector seals, copper fuel return line (leak-off) seals, and rubber injector seals. They can provide exchange injectors so you can pull the old ones, install the new ones with all new seals, and just send the removed injectors back.
Yes, you can anneal the copper seals but I don't think it's worth it.
Yes, I have pulled the injectors. Not a bad job, no special tools except a torque wrench. Give yourself a day for the first engine.
After you reinstall the rocker shaft do a cold valve adjustment, then start the engine, warm it up and do a warm valve adjustment.
PM me with a phone or email if you have questions.
av8r is offline   Reply With Quote
Old 09-26-2013, 06:32 PM   #10
Ben
Guru
 
Ben's Avatar
 
City: Clayton, NC
Vessel Model: Looking...
Join Date: Dec 2007
Posts: 750
Quote:
Originally Posted by av8r View Post
Much easier to pull the injectors if you unbolt the entire rocker shaft and get it out of the way.
American Diesel has all the parts including copper injector seals, copper fuel return line (leak-off) seals, and rubber injector seals. They can provide exchange injectors so you can pull the old ones, install the new ones with all new seals, and just send the removed injectors back.
Yes, you can anneal the copper seals but I don't think it's worth it.
Yes, I have pulled the injectors. Not a bad job, no special tools except a torque wrench. Give yourself a day for the first engine.
After you reinstall the rocker shaft do a cold valve adjustment, then start the engine, warm it up and do a warm valve adjustment.
PM me with a phone or email if you have questions.
Do you know the torque specifications for a Ford Lehman? I can probably look them up somewhere, but curious.
__________________
..................................
Ben
Ben is offline   Reply With Quote
Old 09-26-2013, 06:55 PM   #11
Guru
 
psneeld's Avatar
 
City: Ft Pierce
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 24,234
still wondering why some remove the rocker assembly and some don't...
psneeld is offline   Reply With Quote
Old 09-26-2013, 10:01 PM   #12
Senior Member
 
av8r's Avatar
 
City: Anacortes
Vessel Name: Selah
Vessel Model: Ocean Alexander 40
Join Date: Dec 2011
Posts: 274
Ben
Attached Thumbnails
image.jpg  
av8r is offline   Reply With Quote
Old 09-26-2013, 10:18 PM   #13
Senior Member
 
av8r's Avatar
 
City: Anacortes
Vessel Name: Selah
Vessel Model: Ocean Alexander 40
Join Date: Dec 2011
Posts: 274
Quote:
Originally Posted by psneeld View Post
still wondering why some remove the rocker assembly and some don't...
It takes only a few minutes to unbolt and remove the rocker shaft. Then you have easy access to the leak-off tube bolts, it is easy to remove the leak-off tube itself, and then you have wide-open access to the injector bolts and injectors for removal and reinstallation.
After reinstalling the injectors and leak-off tube it only takes a few minutes more to reinstall the rocker shaft, and if it's time to do injectors it is also probably time to do a valve adjust anyway.
av8r is offline   Reply With Quote
Old 09-27-2013, 05:48 AM   #14
Guru
 
psneeld's Avatar
 
City: Ft Pierce
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 24,234
Quote:
Originally Posted by av8r View Post
It takes only a few minutes to unbolt and remove the rocker shaft. Then you have easy access to the leak-off tube bolts, it is easy to remove the leak-off tube itself, and then you have wide-open access to the injector bolts and injectors for removal and reinstallation.
After reinstalling the injectors and leak-off tube it only takes a few minutes more to reinstall the rocker shaft, and if it's time to do injectors it is also probably time to do a valve adjust anyway.
the time I needed a mech to help...that's what he suggested/did...just not sure why it was recommended "don't remove all that"...
psneeld is offline   Reply With Quote
Old 09-27-2013, 05:56 AM   #15
Ben
Guru
 
Ben's Avatar
 
City: Clayton, NC
Vessel Model: Looking...
Join Date: Dec 2007
Posts: 750
Quote:
Originally Posted by av8r View Post
Ben
Excellent. Thank you.
__________________
..................................
Ben
Ben is offline   Reply With Quote
Old 07-28-2021, 02:29 PM   #16
Newbie
 
City: Bremerton
Join Date: Jul 2021
Posts: 3
I'm having trouble getting fuel past the first injector line on my ford lehman. Their twins same problem. I just replaced the injectors.
N.w.trawler is offline   Reply With Quote
Old 07-28-2021, 02:30 PM   #17
Newbie
 
City: Bremerton
Join Date: Jul 2021
Posts: 3
Do the return lines have to be torque to certain spec? I cant get fuel past the first Injector line on the injection pump. Thanks
N.w.trawler is offline   Reply With Quote
Old 07-28-2021, 03:08 PM   #18
Senior Member
 
av8r's Avatar
 
City: Anacortes
Vessel Name: Selah
Vessel Model: Ocean Alexander 40
Join Date: Dec 2011
Posts: 274
Are you using the lift pump or cranking the engine?
The torque specs are listed above in an earlier post.
av8r is offline   Reply With Quote
Old 07-28-2021, 08:37 PM   #19
Guru
 
catalinajack's Avatar
 
City: Edgewater, MD
Vessel Name: Catalina Jack
Vessel Model: Defever 44
Join Date: Nov 2011
Posts: 2,575
Quote:
Originally Posted by Xsbank View Post
Its easy, Stretch, no special tools, don't take off the rocker arms, you can anneal the copper washers and re-use them. Take the injectors to a farm shop, same injectors as used on some combines and tractors; don't take them to a "marine" specialist and pay double. Good time to check the cyl head torque and re-set the valves (if memory serves the engine has to be operating temperature?). If you haven't done this for a while the rubber seals on the side of the head might be stiff or brittle, but they should be easy to replace if they are. They don't have to be too tight.
When I put my new injectors in, I didn't need to bleed them, the old dear just started right up. i did undo each injector in sequence to make sure they were all working (I did find one injector that was dead after servicing!) and then I put the valve cover back. She's even noisier with the valve cover off, don't forget ear protection and some sort of goggles for the oil.
Be very gentle with the fuel pipes as they are expensive and a bit rare.
The fuel pipes are easily obtained from American Diesel.
catalinajack is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 03:17 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012