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 ShopForum > Technical Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-23-2009, 01:58 PM
Registered User
 
Join Date: Mar 2009
Posts: 12
Question 2.5 turbo diesel injection timming

Could someone help please? We have just finnished rebuilding a 2.5 turbo and reinstalled it in the car adn it started. Unfortunitly it is not in perfect time as I advanced the pump it got better but I ran out of adjustment. does someone out there have the timming test light, splined wrench and injection pump centering sleve to rent along with a few moments to walk us through the process. I am in central Vt

Last edited by Bio Diesel fool; 03-23-2009 at 03:45 PM.
Reply With Quote
  #2  
Old 03-24-2009, 01:47 AM
sixto's Avatar
smoke gets in your eyes
 
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,081
You can eyeball IP timing. Set the engine to TDC. If you can check for #1 TDC by checking cam lobe position through the oil filler hole, so much the better. There's a pointer at about the 11 o'clock position of the crank damper. The damper has graduations around a O|T mark. Numbers to the driver side are BTDC, numbers to the passenger side are ATDC. Remove the plug that takes a 17mm socket on the side of the IP. Same place you attach the IP locking tool and the A-B timing light. Use a mirror to peer into the hole in the side of the IP as you slowly turn the engine CW (the normal direction it turns). Look for something like the end of a flatblade screwdriver to center horizontally in the hole. With the lug centered, read crank timing off the crank damper. Ideally the lug will be centered around 15* ATDC but if the engine wasn't at #1 TDC then it'll have to go a full rotation back to TDC and then to about 15* ATDC. Do this 5 or 6 times then average the readings. Spec is... uhh... 14* or 15* ATDC. My memory's slipping so I don't know if 14* is where I like to set it or the actual spec.

Seems like you know how to adjust timing so you can check if you have the range to hit 14-15*. If not, the engine vacuum pump has to come off so you can reset the IP timer sprocket. This isn't necessary but it'll be useful to set the IP at the middle of its adjustment range. The bolt at the center of the IP timer has left hand threads - CW to remove, CCW to tighten. There's an arrow on the bolt to remind you of this. Set the shank of a big screwdriver through a hole in the cam sprocket to hold the chain as you loosen the IP timer bolt. Remove also the chain tensioner then gently turn the cam CW to move the slack from the passenger side of the cam sprocket to the driver side where the IP is. Stop turning the cam sprocket if there is any tension or resistance whatsoever. With chain slack over the IP timer, slip a stiff card or thin metal sheet between the chain and cogs of the IP timer so the timer is free of the chain. Remove the IP timer bolt (don't worry about the chain), pull out the IP timer without turning it then replace it one spline in the appropriate direction to get the IP within adjustment range. Engage the chain in the IP timer, install the tensioner (I think it's safe to skip bleeding for now) and give the engine a couple of turns to see if the IP is within adjustment range. Repeat as necessary to get things as close as you can with your eyes (which is probably good enough) or do the math after counting IP shaft splines. Don't forget to prime the chain tensioner before starting the engine.

Sixto
87 300D
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 07:26 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page