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OM617.931 motor cruise install...possible?
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Posted 11/8/2010 12:34 AM
jaca300GD
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Date registered: Apr 2010
Location: TORONTO,CANADA
Vehicle(s): 1987 MB 300 GD
Posts: 113
100
OM617.931 motor cruise install...possible?

Hi,
Did some searching and cant really find any info .
I have Mercedes 1987 300GD non turbo with OM617.931, manual 5 speed . Im looking for any istructions,possiblity of installing cruise control to this pedal line control acelerator diesel engine. How hard this would be? is it safe ? does it require tearing steering column apart ? what parts would i need ? appreciate any info .J
#179834
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Posted 11/8/2010 10:13 AM
hipine



Date registered: Jul 2006
Location: US, CO, Bailey
Vehicle(s): 460 1980 280GE w. 617A
5000
RE: OM617.931 motor cruise install...possible?

I think you should talk to "WarrenT" from this list. Warren is in Montreal and has a factory MB cruise control on his 460 G-wagen. I don't know if G's came with cruise control, but I think Warren installed it when he put the turbodiesel motor from a sedan in his truck. I'm pretty sure it can be done using the factory systems from the sedans. One caveat may be that it may interact with the automatic transmisison somehow and as such may not be doable with a manual trans. But I'm way out of my element here and have no idea what I'm talking about. Definitely talk to Warren.

-Dave G.
#179843 - in reply to #179834
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Posted 11/8/2010 10:24 PM
jaca300GD
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Date registered: Apr 2010
Location: TORONTO,CANADA
Vehicle(s): 1987 MB 300 GD
Posts: 113
100
Re: OM617.931 motor cruise install...possible?

leaning towards buying universal kit .One with speed (magnet on shaft )sensor and brake and clutch sensors. Electric not vacuum actuator .Original mercedes actuator is vacuum operated.
#179864 - in reply to #179843
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Posted 11/9/2010 8:15 AM
hipine



Date registered: Jul 2006
Location: US, CO, Bailey
Vehicle(s): 460 1980 280GE w. 617A
5000
Re: OM617.931 motor cruise install...possible?

jaca300GD - 11/8/2010 8:24 PM

....Original mercedes actuator is vacuum operated.


Interesting. The actuator I have here (OE on an '84 300SD) has no vacuum connections at all, only an electrical plug. But I'm way out of my element, see above.

All the best,

-Dave G.
#179873 - in reply to #179864
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Posted 11/9/2010 10:43 PM
jaca300GD
Veteran


Date registered: Apr 2010
Location: TORONTO,CANADA
Vehicle(s): 1987 MB 300 GD
Posts: 113
100
Re: OM617.931 motor cruise install...possible?

I guess long way ahead of me

I thought in 80's Mercedes had them vacuum operated ...apology
#179901 - in reply to #179873
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Posted 6/30/2013 5:41 PM
bram_r
Expert




Date registered: Apr 2007
Location: the Netherlands
Vehicle(s): 1984 MB 280GE, 1982 MB 300GD, 1986 Subaru XT 4WD
Posts: 1659
1000
RE: OM617.931 motor cruise install...possible?

these are some parts that I have still leftover from a 300tdt donor vehicle.
Can someone with a factory om617 cruise control setup share some pics how the throttle linkage and actuator are positioned?

Bram



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#215353 - in reply to #179834
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Posted 7/1/2013 8:09 AM
w.james
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Date registered: Jun 2006
Location: New Jersey
Vehicle(s): 84 280 GE 617A 5sp getrag
Posts: 239
100
Re: OM617.931 motor cruise install...possible?

My mechanic put it in when he did the change to a to a 617A. He said it was real easy with a donor car for parts. He said that every thing is there for the acc and brake switches even the wiring. We still have not figured out how to put a switch on the clutch so when you step on the clutch with the cruse on it does not disconnect. I have not used it much but it seem to work. Don't know how it will work in the mountains. Tell me what specific pictures you need without taking it apart

W
#215362 - in reply to #179834
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Posted 7/3/2017 9:33 AM
trc
Elite Veteran




Date registered: Jun 2006
Location: Estonia
Vehicle(s): MB G350DT '93; MB 300 SD '83 ; Subaru Forester,
Posts: 786
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RE: OM617.931 motor cruise install...possible?

bram_r - 7/1/2013 12:41 AM

these are some parts that I have still leftover from a 300tdt donor vehicle.
Can someone with a factory om617 cruise control setup share some pics how the throttle linkage and actuator are positioned?

Bram


Hey, do you STILL have those?
#236590 - in reply to #215353
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Posted 7/5/2017 9:40 PM
Warren T
Extreme Veteran


Date registered: May 2006
Location: Montreal
Vehicle(s): 230GE,300GD,300D
Posts: 519
500
Re: OM617.931 motor cruise install...possible?

If you have a donor car for parts, it can be all switched over to the G.
There is a safety factor involved so I suggest you have a wiring diagram for the sedan and understand how the system works.
It can be used on a manual transmission if you use the same type of switch that is on the brake pedal on the clutch pedal.

Warren
#236615 - in reply to #179834
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Posted 11/5/2019 8:27 AM
PNZWGN
Member


Date registered: Feb 2014
Location: Roanoke, VA
Vehicle(s): 1984 300GD, 2008 E350, 2012 X5 M Sport
Posts: 9

Re: OM617.931 motor cruise install...possible?

Resurrecting this thread again. I have a 300GD with a swapped super turbo diesel (617a with Goran's super pump: https://clubgwagen.com/forum/viewtopic.php?f=18&t=14758&hilit=update) and I'm fitting the factory VDO cruise control system from the donor 300D. After a lot of research the are a couple of things I still need to sort out:

-What speed sensor was used for the CC amp on a W460 set-up? If I understand correctly there was originally one located on the back of the speedometer on the W123? Could another sensor/source be used in it's place?

-Where/how should the factory CC wiring harness "tie-in" to the W460 for power?


I have resoldered and installed the CC amp, installed the servo as well as all of the throttle linkage and a new speedometer cable (to eliminate a little needle flop) and CC lever on the steering column. I've also had the factory W460 speedometer recently serviced by a VDO shop. I still need to install the wiring harness (sourced), brake cut-out switch (I think I've sourced) and speed sensor (not sourced.) Any tribal knowledge or guidance is greatly appreciated.

Warren, if you still hang out on P3 and don't mind the trouble any pictures or notes on your set-up is very much appreciate... thank you.

#241169 - in reply to #236615
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