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 10-08-2018, 09:04 PM
Banned
 
Join Date: Dec 2007
Posts: 5,061
Need to rotate 617 diesel engine by hand - will these tools work?

I have a long breaker bar and a 27 MM long socket. Do I need to purchase a ratcheting handle for the socket?


Attached Thumbnails
Need to rotate 617 diesel engine by hand - will these tools work?-breaker-bar-2-001.jpg   Need to rotate 617 diesel engine by hand - will these tools work?-breaker-bar-001.jpg  
Reply With Quote
  #2  
Old 10-08-2018, 09:16 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 51,237
Warning I did not spellcheck.

If you remove the Glow Plugs the Engine will turn much more easily since you won't have to deal with the compression. When you do that a regular 1/2 inch ratchet wrench will turn the Engine. However, that is most easily done at least on mine from under the Car. But that means you cannot see what is going on top side.

I have turned the Engine with the Nut on the Power Steering Pump but you need to tighten the Belt and or push inwards on the belt so that the belt does not slip. Note that in order to tightn the Power Steering Belt there is a few nuts or bolts yo need to loosen or you will ruin the tensioner device if you start turning while those are tight.

Some look with disfavor on using the Power Steering Nut to turn the Engine but if the Glow Plugs are out the Engine should turn OK. And the Crankshaft Bolt is the recommend way to rotate the Engine.

I don't remember what size the Power Steering Nut is.
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #3  
Old 10-08-2018, 09:46 PM
Registered User
 
Join Date: Sep 2006
Location: Middle TN
Posts: 4,154
I've never had much luck turning with the PS nut when glow plugs are in. I usually use a remote starter switch connected to the box on the passenger fender OR remove the fan and reinstall the bolts that hold the pulley on. Then it is easy to use a 27mm socket.

The decision depends on what level of precision is needed and whether you'd prefer to remove the glow plugs, fan or try the switch multiple times to get is close enough.
__________________
85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.
Reply With Quote
  #4  
Old 10-08-2018, 09:53 PM
JHZR2's Avatar
Registered User
 
Join Date: Jan 2002
Location: New Jersey
Posts: 5,277
A deep 27mm works well enough, but I’d look for a ratcheting breaker bar or long 1/2” ratchet to make life much easier.
__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)
Reply With Quote
  #5  
Old 10-08-2018, 09:57 PM
Registered User
 
Join Date: Sep 2007
Location: Calgary Alberta Canada
Posts: 1,924
Make sure the stop lever is tied down to the stop position you don't want it starting on you when you least expect it.
__________________
92 e300d2.5t
01 e320
05 cdi
85 chev c10
Reply With Quote
  #6  
Old 10-08-2018, 09:58 PM
Banned
 
Join Date: Dec 2007
Posts: 5,061
Quote:
Originally Posted by Junkman View Post
I've never had much luck turning with the PS nut when glow plugs are in. I usually use a remote starter switch connected to the box on the passenger fender OR remove the fan and reinstall the bolts that hold the pulley on. Then it is easy to use a 27mm socket.

The decision depends on what level of precision is needed and whether you'd prefer to remove the glow plugs, fan or try the switch multiple times to get is close enough.

I forgot about using a remote starter switch. I just happen to have one on hand!

Reply With Quote
  #7  
Old 10-08-2018, 10:15 PM
Registered User
 
Join Date: Mar 2004
Posts: 38
Rec long ratchet.Also used regular length ratchet inserted/taped into the pipe/handle from my floor jack as an extension. Detach fan shroud, guard radiator with cardboard, slip ratchet between shroud and radiator. Then you can watch the top end of engine while liesurely turning engine. I hated doing this from beneath the vehicle.
__________________
Gwizzer
'82 300D
Reply With Quote
  #8  
Old 10-09-2018, 07:52 AM
Registered User
 
Join Date: Oct 2007
Location: Greater Metropolitan Beaverdam VA
Posts: 2,877
My prefered method is using the PS nut. Have done it this way many times. Have done it without removing the glow plugs although I remove them once/year to inspect or replace anyway and try to co-incide the jobs. Using a remote switch works o.k. but I have a vision of how difficult it is to change the starter on these cars.

I have never done it using the crank nut since I work alone. I may look into gwizzer's method next time.

IRT accidental engine starting, I don't think it can happen without the key turned since the fuel is cut off.
Reply With Quote
  #9  
Old 10-09-2018, 09:39 AM
moon161's Avatar
Formerly of Car Hell
 
Join Date: Mar 2008
Location: Buffalo NY
Posts: 2,057
Quote:
Originally Posted by rocky raccoon View Post
..IRT accidental engine starting, I don't think it can happen without the key turned since the fuel is cut off.

If working as designed, yes. If you're messing around under the hood, you can disconnect the shutoff servo from vacuum on purpose or by accident, and that's just one way the shutoff won't work.
__________________
CC: NSA

All things are burning, know this and be released.

82 Benz 240 D, Kuan Yin
12 Ford Escape 4wd

You're four times
It's hard to
more likely to
concentrate on
have an accident
two things
when you're on
at the same time.
a cell phone.


www.kiva.org It's not like there's anything wrong with feeling good, is there?
Reply With Quote
  #10  
Old 10-09-2018, 10:06 AM
vwnate1's Avatar
Diesel Dandy
 
Join Date: Nov 2005
Location: Sunny So. Cal. !
Posts: 7,718
Post But Seriously

? No one really thinks they're going to start a compression ignition engine when turning it slowly by hand, right ? .

RIGHT ? .
__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better
Reply With Quote
  #11  
Old 10-09-2018, 10:12 AM
Registered User
 
Join Date: Sep 2004
Posts: 8,971
Quote:
Originally Posted by rocky raccoon View Post
IRT accidental engine starting, I don't think it can happen without the key turned since the fuel is cut off.
And the fuel shut-off actuator is operated by what?
__________________
When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.
Reply With Quote
  #12  
Old 10-09-2018, 10:45 AM
Banned
 
Join Date: Dec 2007
Posts: 5,061
So, question for the experts; will using a remote starter start the engine?
Reply With Quote
  #13  
Old 10-09-2018, 11:11 AM
Registered User
 
Join Date: Oct 2007
Location: Greater Metropolitan Beaverdam VA
Posts: 2,877
NO. I have used that method and it will not! Just don't turn the key on. Of course you could have an obscure failure that may allow fuel to the engine but it is highly unlikely. Even if it did the only issue would be oil splatter from the valve train unless you are stupid enough to leave the wrenches engaged in the valve train.

Worst case using the remote starter switch is stressing the starter motor. It is not intended to be used as test equipment.
Reply With Quote
  #14  
Old 10-09-2018, 11:17 AM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 51,237
Quote:
Originally Posted by rocky raccoon View Post
My prefered method is using the PS nut. Have done it this way many times. Have done it without removing the glow plugs although I remove them once/year to inspect or replace anyway and try to co-incide the jobs. Using a remote switch works o.k. but I have a vision of how difficult it is to change the starter on these cars.

I have never done it using the crank nut since I work alone. I may look into gwizzer's method next time.

IRT accidental engine starting, I don't think it can happen without the key turned since the fuel is cut off.
I also work alone 99% of the time.

The remote start switch is good for adjusting the valves but if you are tming the Fuel Injection Pump or doing something like the 2mm method you need to crank the Engine by hand and if you are alone you need to be up top to watch what is going on.
So it depends on what you need to do.
__________________
84 300D, 82 Volvo 244Gl Diesel
Reply With Quote
  #15  
Old 10-09-2018, 11:22 AM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 51,237
Removing the Injectors also allows for easy turning at the expense of new heat shields and a bit of mess if you need to bleed the air out of the hard lines.

Craftsman has what is actually a breaker bar with a ratched head on it. The setup is slim compared to the Harbor Freith Ratchet with the breaker bar handle that I have.

For me it is just a pita to try to turn it by hand from above.

I don't know how it is with other people but my Wife has a large mental block when it comes to asking her for help with my Vehicles. She makes it more work to try to get her to help and no matter how simple I explain what I need she rarely understands with out a lots and lots of explanation.

I also don't like asking for help because even when other Mechanics helped I got hurt from something they did while helping me.

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

Bookmarks


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 10:47 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