JDcrawlers Messageboard

Detroit diesel 3-71
Help I need a core starter, and a good working one.
how about a part number??
Can anyone help me??
early 50's late 40's hd7

thanks

Again I know this isn't a Allis site but I bet some one can hep. Iam going to look at this HD7 one last time on Thursday after work and I really need some input on a few things on this dozer. So if you can help me it would really help. So please post up and reply. #1 I noticed on the rear track spro...

I was wondering if you know where the fuel pump is on a 3-71 detroit.
my 2-53 is bolted to the blower.
yes this is the hd-7 Iam thinking of buying.
Iam going to go take one more look at it this week.
where is the fuel pump and are the injectors in the head like the 2-53???
thanks
scott in wa.

I need a starter for the 3-71
I need inspection plates for the same motor.
Also front left idler assy, (its gone) the large front wheel is spoked if it matters.
I am trying to get a rough figure for the above parts. so I can consider it when I make an offer for the rig.

thanks
scott in wa.

I know this is a john deere sit but I thought Id ask this anyway... looked at a hd7 today. needs front idler wheel assy. left track side. also a starter, and inspection plates for the 3-71 engine the machine has a 3-71 Detroit, aftermarket front blade, front hyd pump. ROPS as well don't know the yea...

Wow, got my cd manuals for the 440 I have, and just wanted to say they are great......
thanks much
scott in wa.

If it covers my crawler,/ loader I want it...
how about a model 51, or is it 61 rotory vain back hoe....
PM me..
thanks

go slow, take your time.
keep your fingers out of the way.......
not to bad of a job, just time consuming.

I was wondering if I could fit a 2-71 in my 440icd.???
what kind of modification would I have to do???
same size block??????
what do you think?
I know have a line one, and was thinking I could rebuild it while useing my rig untill ready to do the engine swap.
thanks
scott in wa.

changed oil, blew out the crank case breather, and cleaned the breather on the valve cover. Added some marvel mystery oil to it. No more oil out the dip stick. hummmmmmm. Still not sure what’s going on. But I do notice Condensation or a bit more than that dripping from the breather ontop of the valv...

Yep I have seen allot of posts about that.
I was just wondering if this is a pre-curser to that condition.

I called the Detroit shop about the problem.
They said check all breathers and drains, most likely the problem.
We will see

Thanks
Scott in wa.

Lavoy, Have you ever seen this before?? Where is the vent hole on the block? I think there is a small copper tube that screws into the side of the block its on the opposite side of the blower , the end just hangs down. I bet that’s it. 1. what about theory that the rings are letting pressure i...

The engine runs great with loads of power with clean exhaust.
Black smoke only when under a heavy load...
What do you think????

But.... I do notice that there is no blow by coming out of the valve cover vent cap any more.

Maybe it’s plugged up??????

Hello,
I have a 440 icd
I noticed that there is oil coming out of the dip stick oil hole.
Get worse with rpm.
Seems to want to shoot out, even with dip stick in place.
Any ideas???
Maybe blower seal to block is leaking????????
What do you think?
Thanks
Scott in wa.