220D vacuum pump repair - Page 2 - Mercedes-Benz Forum

Reply
 
LinkBack Thread Tools Display Modes
post #11 of 16 (permalink) Old 06-13-2012, 02:24 PM
BenzWorld Elite
 
Govert70227's Avatar
 
Date registered: Oct 2009
Vehicle: 2000 VW Golf Variant
Location: Leiden, Netherlands
Posts: 2,952
Mentioned: 0 Post(s)
Quoted: 4 Post(s)
You can clean the pipes with a piece of rag and brake cleaner, but the function of the vacuum pump will not be impaired if you don't.

I would change the valves too even if they appear to be ok, but I am of the opinion that a repair should last, but you can always try, maybe the valves will last for a long time after you have replaced the diaphragm.

Don't forget the torque: 9 Nm for the diaphragm screw, 5 Nm for the main cover screws and 2.5 Nm for the valve cover screws. That is all very light.
Govert70227 is offline  
Sponsored Links
Advertisement
 
post #12 of 16 (permalink) Old 08-06-2012, 12:38 AM
BenzWorld Junior Member
 
Date registered: Jan 2011
Vehicle: UNIMOG 421.129 HardTop
Location: Karachi, Pakistan
Posts: 13
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Hi,

Nice illustration, could you please tell what is the purpose of external cap with two screws or it possible to install diesel lift on the external cap.

Regards,

Abdul.
abdulr76 is offline  
post #13 of 16 (permalink) Old 08-06-2012, 12:44 AM
BenzWorld Elite
 
Govert70227's Avatar
 
Date registered: Oct 2009
Vehicle: 2000 VW Golf Variant
Location: Leiden, Netherlands
Posts: 2,952
Mentioned: 0 Post(s)
Quoted: 4 Post(s)
Under the external cap with the two screws are the two valves.

You cannot use that as a diesel lift pump (and why should you want to?).
Govert70227 is offline  
post #14 of 16 (permalink) Old 08-06-2012, 01:17 AM
BenzWorld Junior Member
 
Date registered: Jan 2011
Vehicle: UNIMOG 421.129 HardTop
Location: Karachi, Pakistan
Posts: 13
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Hi Govert70227,

Bundle of thanks for reply, let me share my story with you.
I have Unimog 421 with Om616.912 engine. The Unimog is without brake booster and I want to install brake booster for which I need a vacuum port or pump. MB 240D comes with vacuum pump but in Unimogs hour meter with Diesel lift pump is installed. So, by replacing hour meter with vacuum pump (simple bolt-on) I can get vacuum for Brake Booster but I am unable to install diesel lift pump on it (you just confirmed). Engine room is very congested and I can not install Diesel Lift pump on IP as well. That why Diesel lift pump is installed on Hour Meter.

Option 1. Install 240D vacuum port and install a electric fuel pump for feed IP.

Option 2. Forget about 240 vacuum pump and replace Alternator with vacuum port. It requires one oil deliver and return line to the engine. I thinking to get delivery line from Oil pressure switch (by install a T) and return line to valve cover or oil sump.

Option 3. Install external vacuum pump (belt driven) with some modification in engine room and use same option 2 oil delivery method.

OR if some provide me brilliant idea on the Forum.

Look forward to good resolution...................

Regards,

Abdul.

Last edited by abdulr76; 08-06-2012 at 01:21 AM.
abdulr76 is offline  
post #15 of 16 (permalink) Old 08-06-2012, 03:40 AM
BenzWorld Elite
 
Govert70227's Avatar
 
Date registered: Oct 2009
Vehicle: 2000 VW Golf Variant
Location: Leiden, Netherlands
Posts: 2,952
Mentioned: 0 Post(s)
Quoted: 4 Post(s)
And you cannot install a lift pump on the IP? that is the normal place for the lift pump.

Otherwise an electric lift pump would be the easiest solution in my opinion.
Govert70227 is offline  
post #16 of 16 (permalink) Old 08-06-2012, 04:05 AM
BenzWorld Junior Member
 
Date registered: Jan 2011
Vehicle: UNIMOG 421.129 HardTop
Location: Karachi, Pakistan
Posts: 13
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Thanks for reply, more opinions are welcome.
abdulr76 is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > General Mercedes-Benz Forums > Vintage Mercedes-Benz

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











  • Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
     
    Thread Tools
    Show Printable Version Show Printable Version
    Email this Page Email this Page
    Display Modes
    Linear Mode Linear Mode



    Posting Rules  
    You may post new threads
    You may 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 On
    Pingbacks are On
    Refbacks are On

     

    Title goes here

    close
    video goes here
    description goes here. Read Full Story
    For the best viewing experience please update your browser to Google Chrome