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#1
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Injector balancing: Shady Tree Mech. style
Started this thread so not to hi-jack another one.
Seems you need a pop tester and lots of different thickness washers and other parts. below is a few post coppied over to this one for reference.
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
#2
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Quote:
Quote:
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
#3
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HERE is a picture of a pop testor. Sorry I cant just put the pic here. Apparently you cant use an [img] link to a file that already exist on this forum. Sounds like a dumb way to write the coding but that's how it is.
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
#4
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Quote:
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"If anyone knows other lessons I need to learn, please tell me. I'm tired of learning them the hard way". by JerryBro The Glow Plug Wait: This waiting period is a moment of silence to pay honor to Rudolph Diesel. The longer you own your diesel the more honor you will give him". by SD Blue My normal daily life; either SNAFUed- Situation Normal... All Fouled Up, or FUBARed- Fouled Up Beyond All Repair 62 UNIMOG Camper w/617 Turbo, 85 300SD daily driver- both powered by blended UCO fuels |
#5
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Here's a good looking injector tester. Haven't inquired as to price though.
http://www.toolgate.com/det05.html |
#6
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"Here's a good looking injector tester."
A real shade tree mechanic makes his own Here's mine, made from a bottle jack.
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The Golden Rule 1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later) |
#7
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OOH, do tell how you made that tester!!! That is right up my alley....
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#8
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I used a small bottle jack (Craftsman 2 ton, I think) and removed the top nut (really torqued on there!!!).
Take apart the cylinder of the jack and remove the center rod and seals (like on a master cylinder). There is an inner cylinder, that the center rod was in, that is the pressure chamber of the jack and there is a small hole near the top of this inner cylinder. Seal that little hole (weld it or I just used JB Weld). Drill or grind out the hole in the top nut where the center rod passed thru and tap it for a bushing (mine was 3/4 NPT, I believe). From there it's a matter of some plumbing fittings and an old injector line. The metric adapter to mate up with the other copper fittings and to the injector line was difficult to find; I can't remember if I had to do a little "thread adjustment" with die and tap to go from pipe thread to metric. It takes a little finagling, but, if I can do it, you can, for sure. FWIW Edit: I think this is where I found the metric/NPT adapter (at least it was in my "Favorites" folder for something):http://www.fittingsandadapters.com/metric.html
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The Golden Rule 1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later) Last edited by jbaj007; 06-27-2004 at 01:58 AM. |
#9
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The one thing I've noticed with all three of these (and others I've seen in the past), is that it seems it would be hard to get an injector within a couple bar of each other since the scale is usually in 10 bar or more.
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#10
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Isn't factory spec 5bar? If it is broken into 100psi increments that is a little over 6 bar per increment so you pretty much have to hit the same area between the two at once.
Nice creative work jba, I think I'll bookmark this page for future reference.
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Jeff M. Mercedes W123 DIY pages are now located here. 1983 / 1984 300D Sold 2000 CLK430 Cabriolet ~58k Sold 2005 Avalanche 4x4 ~66k |
#11
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Quote:
I've sent a e-mail requesting the price. |
#12
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Does it matter what fluid you use in the DIY tester? Does it have to be bled before testing an injector? Excellent idea there BTW.
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'83 240D with 617.952 and 2.88 '01 VW Beetle TDI '05 Jeep Liberty CRD '89 Toyota 4x4, needs 2L-T '78 280Z with L28ET - 12.86@110 Oil Burner Kartel #35 http://i16.photobucket.com/albums/b1...oD/bioclip.jpg |
#13
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Bosch specifies a special test fluid for their testers.
I use Mazola oil. It bleeds itself after a few hearty pumps of the handle.
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The Golden Rule 1984 300SD (bought new, sold it in 1988, bought it back 13 yrs. later) |
#14
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I would imagine diesel itself would work well and give an accurate indication of the injector.
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#15
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I would use diesel fuel. The special test fluid is simply an oil with the same viscosity as diesel fuel, but has a much longer shelf life than diesel fuel. Probably very low in aromatics.
Joe
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1978 300SD Running Biodiesel/SVO, 2 tank system 127,000 Miles |
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