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#1
08-19-2015, 09:59 AM
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ALDA Rebuild Kit - Parts?
After chasing a leak on my 91 300D (OM 602) the cause turned out to be the ALDA. After removing and disassembling it's clear that the seal in the threaded base is leaking.
My unit is the same part # as shown in this The green seal in the below photo is leaking on mine.  The ebay ad has expired, the seller is in Australia and I'm in the USA. So I'm looking for an alternative to hoping the seller has a kit left and waiting 2 - 3 weeks for it to arrive. Any suggestions? 
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#2
08-19-2015, 10:28 AM
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What sort of leak are you chasing? The ALDA is a pressure device that runs off of boost pressure.
__________________
2004 F150 4.6L -My Daily 2007 Volvo XC70 -Wife's Daily 1998 Ford F150 -Rear ended 1989 J-spec 420SEL -passed onto its new keeper 1982 BMW 733i -fixed and traded for the 420SEL 2003 Volvo V70 5 Speed -scrapped 1997 E290 Turbo Diesel Wagon -traded for above 1992 BMW 525i -traded in 1990 Silver 300TE -hated the M103 1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one 1979 Silver 300D "The Silver Slug" -Sold
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#3
08-19-2015, 10:38 AM
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Just saw your other thread, the ALDA cannot leak fuel, as it doesn't hold any fuel.... Are you sure one of your delivery valves isn't leaking and spraying the area making it look like something else is leaking?
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2004 F150 4.6L -My Daily 2007 Volvo XC70 -Wife's Daily 1998 Ford F150 -Rear ended 1989 J-spec 420SEL -passed onto its new keeper 1982 BMW 733i -fixed and traded for the 420SEL 2003 Volvo V70 5 Speed -scrapped 1997 E290 Turbo Diesel Wagon -traded for above 1992 BMW 525i -traded in 1990 Silver 300TE -hated the M103 1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one 1979 Silver 300D "The Silver Slug" -Sold
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#4
08-19-2015, 11:21 AM
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I have some extra ALDAs if you need one.
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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 157k miles 06 E320 CDI "Rutherford", Black on Tan, 175k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete 19 Honda CR-V EX 70k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife
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#5
08-19-2015, 12:28 PM
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On my 91 300D I had a leak coming from one of the metal fuel lines that ran to the injector. Put diesel all over the injection pump area. Didn't realize it was from a fuel line until I look up under the manifold.
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Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k
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#6
08-19-2015, 12:51 PM
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dude99: The ALDA was wet inside with what looked like motor oil. After reviewing how it works I think the bad ALDA gasket allowed oil to be pushed in from the intake (think blow-by).
shertex: Check your PM  JamesDean: That's a good point! This is a tricky one to locate because the intake manifold hampers visibility. I always appreciate all the ideas and feedback from the forum, thanks to everyone!
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#7
08-20-2015, 10:13 AM
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You can measure seal thickness, inner and outer diameter and order one if a standard seal will fit. Measure in inches or mm depending on application.
Parts stores used to have rolls of oring material that could be cut to length then ends glued together. I haven't seen that fr a while.
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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.
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