I have an 1985 300td wagon with a leak at the top of secondary fuel filter. It's weeping at the top of the banjo bolt where it meets the filter head.

I am trying to discern if this year (1985) called for a crush washer under the bolt head or not. I've read where some years used the crush washer and some did not. There are seems to be a rubber o ring on the shaft. It seems to be hard and useless.

My '85 wagon has a crush washer and the o-ring on the shaft. I had to get new o-rings and crush washer last secondary filter change I did to curb the oozing.....

BTW, where is that wagon in your sig. mister.......

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John

If the bolt is good and tight and still leaking I would put a crush washer in. You'll probably want one on both sides of the banjo bolt. If the o-ring on the shaft is hard you might think about changing that as well.

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Same thing on mine, took both o-rings and crush washer to get the leaking stopped.

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1985 300D
The rest:
1957 MGA (comatose)
1965 Falcon (sleeping)
1966 E-100 (rust test in progress)
1976 Ford 3400 D Tractor (workhorse)
1978 Mercury Zephyer (5L playtoy)
1995 Isuzu NPR D (fetcher)
1998 Subaru Legacy (Spare)
2000 Toyota Sienna (School bus)
2008 Toyota Prius (Commuter)

And I am sure the ULSD doesn't help either

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81 Mercedes 300SD 289k.......SOLD
82 Mercedes 300CD 252k......slow ride

82 mercedes 300 SD...mi Unknown
83 Mercedes 300D ????ksniff..gone too
84 Mercedes 300D 148k........SOLD
85 Mercedes 300TD 386k and holding some one elses project

My 85 300D uses 2 O rings on the shaft. a smaller one below the side hole on the bolt, and a larger one above the hole. Looking in the parts section above, the catalog only shows the smaller one. I ordered 2 from Phill, but I had to replace the larger one from my stash of O-rings. don`t know if it is fuel compatable, but it stopped the leak.
If the upper O-ring fits tight enough you don`t need the aluminium washer.
I just went out to check mine, and it is bone dry.

Charlie ☺

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I don't believe the 85 came with the copper or aluminum washer, only the 2 o-rings, which are different sizes as previously described.

I wouldn't monkey with non-standard (i.e. hardware store or auto parts store) metal washers. The original washer is pretty thin, so adding one of those probably will not hurt anything, however, excessive washer thickness raises the entire center bolt, including the o-rings. One of the o-rings is what separates the incoming fuel from the filtered fuel, so you don't want that one too far off from its proper position.

Edit: Part numbers for these parts have been posted previously. Do a search on o-ring under my name.

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Palangi

2004 C240 Wagon 203.261 Baby Benz
2008 ML320 CDI Highway Cruiser
2006 Toyota Prius, Saving the Planet @ 48 mpg
2000 F-150, Destroying the Planet @ 20 mpg



TRUMP .......... WHITEHOUSE
HILLARY .........JAILHOUSE
BERNIE .......... NUTHOUSE
0BAMA .......... OUTHOUSE

New O-rings should do the trick. I had the same problem and found both rings were hard as a rock. The ULSD seems to be causing tired O-rings to pack fail as I also had to replace the delivery valve seals that suddenly started to leak too.

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LRG
1987 300D Turbo 175K
2006 Toyota Prius, efficent but no soul
1985 300 TDT(130K miles of trouble free motoring)now sold