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#1
03-10-2009, 11:17 AM
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HOW-TO: Rebuild Diesel IDI Injectors
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#2
03-10-2009, 03:43 PM
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Well there goes all my buisness.
  I just glanced throught it, but it seems to be fairly complete. I also wire-brush the inside of the lower body, then clean with solivent and blow it out with an air gun. Some really nasty crud accumualtes in there.
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine
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#3
03-10-2009, 06:59 PM
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I would say that just using lapping compound on the Glass Plate is better than using various grits of Emery Paper on top of a Glass Plate; the Glass Plate by itself is much falter than Emery Paper over the Glass Plate.
Rock Shops can supply suitable lapping compound fine enough to do the job.
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84 300D, 82 Volvo 244Gl Diesel
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#4
03-10-2009, 07:34 PM
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Hmmm... My school's shop has a .00001" flat granite table....
__________________
$60 OM617 Blank Exhaust Flanges $110 OM606 Blank Exhaust Flanges No merc at the moment
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#5
03-10-2009, 09:12 PM
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Quote:
 I use a plate of glass and 600 grit lapping compound I bought from a Rock Shop supply seller on Ebay. (They use the compound to tumble Gemstones and Rocks to smooth and polish them; as well as to lap flat surfaces on them.) If I was in a hurry I'm sure I could have found a local place to buy the compound from. One of the members balked at my use of 600 grit; but we used 500 grit on a Cast Iron hand lapping plate and the Lapping Machine at the Fuel Injection Shop I used to work in. I have rebuilt 4 sets of Injectors using the Glass Plate with no problems with leaks. I would like a regular lapping plate but keep getting out-bid on Ebay or the shipping of the heavy plate is too expensive.
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84 300D, 82 Volvo 244Gl Diesel
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#6
03-10-2009, 09:57 PM
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I use 2000 grit
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver 1982 300SD - 232K miles - Wife's Daily Driver 1986 560SL - Wife's red speed machine
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#7
03-11-2009, 01:09 AM
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Quote:
It also might help convince folks that is really not a good idea to just take the Injector apart and Swap the Nozzles.
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84 300D, 82 Volvo 244Gl Diesel
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#8
12-02-2011, 02:56 AM
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Recycled
for new members.
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#9
12-02-2011, 09:41 AM
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Pop tester build
I built this one, with a variables such as a 6" face 3000psi gauge, but the basic premise works, and it can be done inexpensively with a little patience.
How to build a diesel injector pop tester - Topic I've done 3 sets of injectors with it. It takes a little use to get comfortable with setting the pressures, and a stout bench vice next to it makes the process a lot easier. The vincewaldon site is invaluable for getting into this process.
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1985 300D-189k The 'UD', Ivory and Pinkamino 1979 300D-211k Dark Gray, Parchment A 1980 Harley-~166k and A 1994 Ford diesel pickup-349k and A 1990 gasser Volvo wagon-145k
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