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  #1  
Old 03-09-2008, 07:59 PM
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Join Date: Dec 2000
Location: Bridgetown, Nova Scotia
Posts: 574
Smile Anyone had a starter apart for a 603?

I have a starter not working on my 300TDT. It will spin but will not "engage". I have it on the bench and have removed the solonoid and cleaned that but with no differance. It seems like the gear is stuck or siezed on the shaft. Is that possible? I was thinking of taking the starter apart but not sure what trouble I could get into. Any suggestions? Could the starter be dirty inside? Is it easy to disassemble and more important assemble? Any help appreciated.
Thanks

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  #2  
Old 04-14-2008, 09:06 PM
dunl's Avatar
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Location: Sylvan Lake, Alberta,CANADA (1.5 hr from Calgary)
Posts: 940
Hey, any luck with this? Same thing with my 617....
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Old 04-15-2008, 01:41 AM
compress ignite's Avatar
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Join Date: Feb 2004
Location: 32(degrees) North by 81(degrees) West
Posts: 5,554
Bosch Starters

Usually biggest thing is carbon dust from the brushes.

Someone[her name shall go unmentioned to protect the foolish]took the
battery charger[set on 2a trickle to keep the monster 8D s up]off a 30ish
foot Pearson sloop.The packing on the shaft seal was old and dripped a
little.
Apparently,the batteries took the bilge pumps on vacation some time
within the 30 day period after removal of the battery charger.The Vessel
was found tied to the dock with 2 3/4 feet of water in the hull.

(This very same Vessel won the Brand New Yanmar lottery, one year prior
to the U-Boat conversion,when She who shall go nameless failed to notice
the engine temperature gauge in the red[blocked seacock...intake for cooling water]
I'm told she couldn't ignore the 1st Yanmar grinding to a halt.
As a result the New Yanmar was equipped with a low oil/overheat alarm.
The alarm was wired to a horn of over 200 db.
Man,I hated that horn...every time you started the engine...before you
had enough RPMs to bring the OP up.)

I digress.

All I was told was the sloop had a "New" engine that wouldn't start.
The Interior had been detailed so well I suspected nothing!
Sure enough the Hitachi starter would not engage.'Pulled it off...
'Shaft was rusted (WTF?) 'Cleaned the shaft with a wire wheel and
lubed it.All was well Hitachi started Yanmar... HooRay!
'Went to check the lubricant in the Yanmar's Transmission...MILK Shake.
ALL THE UGLY TRUTHS were then revealed.
(After much screaming on the Cellular)

I still pray, every time I remember the stories,for the LONG suffering
Physician...Husband to She who shall go Un-named...He,Is a good Man!




I know you can replace the "Bendix" on the Bosch starter.(Solenoid)
You'll just have to weigh the cost against a "New" starter.

The starter is just a very powerful electric motor,with a spring loaded
magnetically operated "Engagement" gear(s)[the "Bendix"].When the
"Bendix" fails to "Throw out"[to and engage the flywheel]you get that
annoying No Crank/With the Starter Spinning.
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Last edited by compress ignite; 04-15-2008 at 01:54 AM.
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  #4  
Old 04-15-2008, 07:21 AM
JimFreeh's Avatar
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Join Date: Mar 2007
Location: Hampton Roads, Virginia
Posts: 3,366
A 603 starter is different from a 617 starter.

It's been years since I swapped ours out, but I recall that the drive had some sort of plastic planetary reduction and that plastic part failed.

Ended up getting another starter, couldn't get the parts to fix ours at the time.

The last two times it worked before failure, it sounded "off".


Jim
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  #5  
Old 04-15-2008, 11:11 AM
compress ignite's Avatar
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Location: 32(degrees) North by 81(degrees) West
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Russian Mercedes Club EPC online FREE

It gives you all the parts #s with great diagrams


http://www.detali.ru/cat/oem_mb.asp

If you have trouble with the above link...

Step by Step Dis-assembly / Re-assembly instructions below.
For: Starter 603.XXX engine.
Attached Thumbnails
Anyone had a starter apart for a 603?-screenhunter_01-apr.-15-13.26.gif   Anyone had a starter apart for a 603?-screenhunter_03-apr.-15-13.28.gif   Anyone had a starter apart for a 603?-screenhunter_04-apr.-15-13.28.gif   Anyone had a starter apart for a 603?-screenhunter_05-apr.-15-13.29.gif   Anyone had a starter apart for a 603?-screenhunter_06-apr.-15-13.29.gif  


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Last edited by compress ignite; 04-15-2008 at 01:45 PM.
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