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2 Pre-cups/NBRs removed!

S

sflem849

Well-known Member
I got two of them removed before supper tonight and I have two to go. I have to do some repairs to my slide hammer. It started self destructing with the EXTREME force required to pull the NBRs.
I will get a picture of the slide hammer soon. It is about three feet long with a fairly heavy weight. I then welded a 1/2" NC nut to a thicker plate so it can accept a standard slide hammer. This thing is very beefy. I found the only way I could get them to move is by throwing the hammer up without holding on to it. Judging by the abuse my hands took I feel they were absorbing a lot of the blow of the hammer.
I'm hungry. I will check in later.
 
(quoted from post at 18:29:12 03/16/10) Sflem, why are you pulling out the precups?

Andrew
Click to expand...

The Central Diesel guy in Iowa said that you should pull them when you do the injectors. Is this wrong???
 
I pulled all 4 injectors on my Farmall 504's D188 and did not pull the pre-cups. Also, I did not pull the copper sealing washers per my diesel mechanic/injector man. He said as long as I did not "disturb" them then they were fine. I cleaned them and torqued them down. It runs like a new tractor.

Pictures of my 504 injector teardown...

CIMG0605.jpg


CIMG0611.jpg


CIMG0608.jpg


CIMG0614.jpg


I'm sure ya can tell which one was leaking. Also the injector man said since the ends of the injectors had a clean line around them that the copper washers were not leaking by. I replaced the injectors in the same holes, in the same orientation to minimize leaks.

CT
 
Hmm. When I pulled my injectors from their holders the copper washer came out with one and stayed in with the other three. My injectors are a bit different than yours. There is an injector inside a holder thing.

I posted some pics a while back. I am off to look for them in parts and pieces. I'll be back.
 
p50329.jpg


I am trying to pull the thing that the puller is attatched to. The nozzles go down in the hole that is filled with the paper towel.

p50310.jpg

p50311.jpg


These are the injectors themselves. You can (barely) see the one with the puller attached came out with the copper washer on it. The other three didn't!?! The copper washer that came out with the injector got a little bent. Not the kind of thing I would want to put back in.
 
I am trying to pull #17 not #20 I think I used the wrong words.

The first two attempts at this post were not very clear. Now you should see what I am talking about :D

p50355.jpg
 
Nice pictures. I see your injectors mount a little differently than mine did. Yours appear to be a two piece and mine were a one piece body. If your precups need changes, or other wise removed for some reason, this is how I was told to remove them. After you get the bosses removed, you can remove the head and then drive them out from the other side. good luck and keep up posted on your findings. What is wrong with your injectors? Leaking, low crack psi, or removing for head work?

CT
 
Oh gotcha i thought you were pulling the pre
cups,there below what you pulled out, (the
'concave' structure down there) now i look and NB
= Nozzle Body... had a brain short there on my
part.

And yup i sent them with the injector to them as
well. Dont worry though all that effort is worth
it ;)

Andrew
 
Nope, I pulled the bone head move. I used precups and NBRs interchangably. The inector guys all call that big hunk of cast a precup. Not so much.

I am removing the injectors bc I am seeing a ton of crankcase dilution. When I go to bleed the injectors I wasn't getting a pulse from 2 and 3 and they were really black an oily. I took them in to a local tractor fixer and he cracked them. Two of them were opening WAY too low and the other two just put out a snotty stream.
 
Oh yes they'll do that when going south, i think i
told you awhile back that mine were dumping fuel in
not spray or mist etc, sure make a big difference
when it was all done though. In my case more then
the rebuilt pump did.


Andrew
 
I know you already helped diagnose it. I figured the other dude would like the full backstory.

BTW, I think I am going to go to DIS in Windsor/Madison, WI with them. That guy in Iowa kind of scares me. He seems like the kind of guy that would replace every bearing (bad or not) bc that is the only way to do it right. I guess I am of the thought process where if the bearing is still good why replace it.

Remind me where you sent your injectors and pump?

DIS says less than $100 each if they don't need valves and another $180 if they need a valve.
 
The pump was done by Central, and the injectors i
actually had them done locally he in CT. I looked up
my bill and it was 276 for all four of them, this
was 2 years now too. I dont think i had any internal
parts broken just clogged up and O rings / seals
gone bad.


Andrew
 
(quoted from post at 09:08:35 03/17/10) The pump was done by Central, and the injectors i
actually had them done locally he in CT. I looked up
my bill and it was 276 for all four of them, this
was 2 years now too. I dont think i had any internal
parts broken just clogged up and O rings / seals
gone bad.


Andrew
Click to expand...

I remember that now. Stupid! I should send them to CT :D Judging by what my parents said about CT, they would probably get stolen out there. They lived in Stratford for about 1.5 yrs. Dad's truck almost got stolen twice and the mirror broken off. He can't use the keyholes anymore bc the locks are all punched out. The workers at his plant would steal anything of value and even some stuff that wasn't worth it from the plant.
 
Oh yes, you get towards the city of New Haven and
NYC its gets alittle rough... :0 Im in the northeast corner of the state. Actually called the 'quite
corner'


Andrew
 
I always made fun of your state. It is like Madison over to Milwaukee and down to the state line. It is just a cute little state. Ours is almost 5 of that tiny little thing.

I got the other two deallys out. I am still back to undecided on where to send them.
 
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