Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 01-06-2004, 03:00 AM
84W123DT
Guest
 
Posts: n/a
Shut-Off Valve @ IP aka Vacuum Control Unit or MB FSM-EPC = shutoff box

A local parts supplier supplied me this part which looks the same as the one in the CD manual for W123 300DT. I have not taken out the old part (does not hold vacuum and leaks oil into the vacuum line), which I plan to do when the weather improves, to compare it's likeness.

My hesitation is, the part has a stamped on it that says "ronak" and that's it! No part number; No star. I tested it with MityVac and it seems to hold vacuum pulling the lever in which indicates that the diaphragm is okay.

Has anyone heard about "ronak"? Is this an OEM part or of the same quality?

Thanks.

P.S. The photo looks the same as what I received but the stamped labelling is not.

Attached Thumbnails
Shut-Off Valve @ IP aka Vacuum Control Unit or MB FSM-EPC = shutoff box-0000702053.jpg  

Last edited by whunter; 01-11-2013 at 03:27 PM. Reason: tweak title
Reply With Quote
  #2  
Old 01-06-2004, 04:31 AM
Registered User
 
Join Date: Dec 2003
Location: San Jose, CA
Posts: 26
That looks like the right part, don't know about the brand though. When you tested it, how many pumps did it take before the arm was fully retracted, and what was the reading on the gauge? I ask because I'd like to know how a good one is supposed to act when tested. Thanks.
Reply With Quote
  #3  
Old 01-06-2004, 10:24 AM
Registered User
 
Join Date: May 2002
Location: Central Oregon
Posts: 1,004
You probably know this but,,,

Make certain when reinstalling this part that you get the hook onto the rack arm. If you miss this connection all kinds of bad things can happen.

I like many here always keep a couple of 17mm wrenches handy when first starting the car afte doing anything to the IP so that if needed you can start cracking injection lines as fast as possible to kill the motor.
__________________
'99 S420 - Mommies
'72 280SE 4.5 - looking to breathe life into it
'84 300SD Grey - Sold
'85 300SD Silver - Sold
'78 Ski Nautique
Reply With Quote
  #4  
Old 01-06-2004, 05:58 PM
84W123DT
Guest
 
Posts: n/a
WM20650:

Two full strokes takes the vacuum reading at 6-7" and fully-retracts the lever on the shutoff valve. It holds the vacuum and kept the lever retracted for more than 2 minutes (that's how long I waited).

Last edited by 84W123DT; 01-09-2004 at 06:22 PM.
Reply With Quote
  #5  
Old 01-06-2004, 06:07 PM
84W123DT
Guest
 
Posts: n/a
Photo of it using the Mity Vac
Attached Thumbnails
Shut-Off Valve @ IP aka Vacuum Control Unit or MB FSM-EPC = shutoff box-w123-shutoff-valve-injection-pump-002.jpg  
Reply With Quote
  #6  
Old 01-11-2013, 03:29 PM
whunter's Avatar
Moderator
 
Join Date: Dec 2003
Location: Metro Detroit, Michigan
Posts: 17,416
FYI

MB FSM and EPC calls this a shutoff box.


.
__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/
Reply With Quote
  #7  
Old 01-11-2013, 09:46 PM
Registered User
 
Join Date: Aug 2010
Location: Sacramento, CA
Posts: 3,115
That is the correct type, with the bent arm. How much did you pay? I see prices from $55 to $200 for new ones. There are ones that look similar for earlier or later engines (forgot) that have a pin at the end instead of the bend and cost much less. There should be 2 gaskets w/ a steel shim between the stop valve and injection pump. You can buy the gaskets separately real cheap.

If the stop valve doesn't leak when you pull a vacuum, it is good. If your car has only ~10" Hg vacuum as both my 300D's did recently, even a good one will be very marginal in shutting off the engine, taking 10 sec or not at all. After fixing/replacing the vacuum pumps and getting a steady 20" Hg, both engines turn off immediately.

Replacing one is easy if you have a set of ratcheting box wrenches (Craftsman ~$35). I recall the 3 hex bolts have 10 mm heads. Remove the white transmission control valve on top of the injection pump first. You need to snake the stop valves behind the oil filter housing to get them in or out of place, which is easiest if you suck the rod in with your MightVac.

As mentioned, insure the hook goes around the arm in the IP arm, which you can't see. When correct, you can push the stop valve forward and won't feel it pushing anything. If you tug backwards, you will feel it catch on the arm. It isn't hard to get it right and someone would have to be inept to force it forward against the arm using the bolts. That would leave the pump at "high throttle" and I imagine one then couldn't push the manual "stop" lever full forward. If correct, you can easily slide the stop valve into the IP pump and snug the bolts up with 2 fingers, assuming you were smart enough to clean them and spray w/ WD-40.
Reply With Quote
  #8  
Old 01-11-2013, 10:37 PM
Registered User
 
Join Date: May 2007
Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
Posts: 9,652
I have removed several of the vacuum shut off valves or Shutoff box in the yards. just pulled one yesterday off a 85 300D.

There are the 4 10mm bolts to remove, then the square plate, gasket, steel ring, gasket and finally the valve. several I removed only had one gasket.

There really isn`t room to use a ratching box wrench or Gear Wrench. I use a 1/4" wratchet and a 10mm socket to loosen the bolts, then remove with my fingers. on the 617 engine, the top left one (Or looking down from the top of the engine, top right) is close to the Oil Filter housing. If you loosen it too far, the wratchet is up against the housing, and you can`t get it out w/o screwing the bolt back in a bit. Also a bit tight getting your hand in between the filter housing. The 240D`s give plenty of room.

The one yesterday, the PO used lock-tite and it was a little more difficult to remove the bolts.

Here is a thread showing how the lever hooks inside the IP, posted by "THEGEARS".
http://www.peachparts.com/shopforum/diesel-discussion/299608-vacuum-shut-off-device-pics.html


Charlie
__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
Reply With Quote
  #9  
Old 01-12-2013, 12:13 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 51,036
One of the aftermarket parts companies makes them MTC. Some parts places sell the offical one and one and the afetermarket ones made in ????

__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
Reply

Bookmarks

Thread Tools
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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 05:05 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page