m1123 200amp generator hitting injector line

[hitekrednek]

ive got 2000 m1123, i was riding on some trails, nothing too bad but i hit a rut then i starting hearing a clanging noise, immediately stopped walked around didnt see anything

raised the hood and the noise got louder but couldnt see anything

turned around and drove the couple miles back home once i got to the pavement the noise all but went away

after getting home i shut it down raised the hood and found one of the ears from the cooling fin of the generator laying on top of the washer tank

after further inspection they have all been broken off and the only thing even close is the fuel injector lines

generator is not loose everything is tight

is there an adjustment on the generator bracket and im just going blind and cant see it ?

the belt is still tight as well

anyone ever see this before ?

any help or insight would be greatly appreciated

 

[papakb]

Are you sure the correct belt is on your truck and that some troop didn't just throw on whatever they had in the shop onto it? Those belts come in all different lengths and there's a chance it isn't the right one.

 

[hitekrednek]

i wouldnt swear that anything is correct on this rig, i know it was a gov planet truck but the guy i bought it from was not much of a mechanic either

but ive been driving it with this belt for a few months and had not had any issues until now

 

[Mogman]

Detailed pics please.

 

[Retiredwarhorses]

There is a rear shroud that should cover the cooling fins on the Generator, maybe post a picture.
if anything on the Gen is striking anythin, possibly you have a broken motor mount and motor is moving when off-road.

 

[86humv]

Check the rear mount ...some early systems used a short bracket from rear of Alt. to exhaust manifold stud...they get loose and break....Later 200 amp systems used a longer rear bracket which goes down to the lower block....this is a much better rear mount system.

 

[Coug]

Check the rear mount ...some early systems used a short bracket from rear of Alt. to exhaust manifold stud...they get loose and break....Later 200 amp systems used a longer rear bracket which goes down to the lower block....this is a much better rear mount system.

I had 2 broken off mounting studs before I upgraded to the longer bracket. Never contacted anything in the back though.

 

[TOBASH]

 

[hitekrednek]

Ok finally got a break in the weather and time to dig further into the problem

a bolt fell out of the bracket that the generator mounts too

anyone happen to know the size and thread of this bolt ?

hoping it hasn’t damaged the injector or fuel line

 

[Coug]

M10 1.5 x 30

Just one missing bolt shouldn't be enough to let the generator move that much, so I would check the other 2 in front for tightness (one is a little hard to reach up from the bottom) and the rear mounting bracket that goes over to the exhaust stud, as those exhaust studs are prone to breakage if it is the pre 196900 serial number setup (easy to tell, as the power steering pump has the reservoir built in, post 196900 has a reservoir on top of the motor)
the post 196900 serial number rear generator bracket goes down to the block, a much better setup. discussion on that at this other thread

Sheared generator bracket bolts.

 

[Mogman]

Dang Coug you're not teaching him how to fish!

 

[Mogman]

You see, had you looked in TM 9-2320-280-24P-1
You would have found this, then you would not have to ask what size the bolt is.


Coug is also correct, just that one missing bolt should not have caused the issue

 

[Retiredwarhorses]

You see, had you looked in TM 9-2320-280-24P-1
You would have found this, then you would not have to ask what size the bolt is.
View attachment 854689
View attachment 854690
Coug is also correct, just that one missing bolt should not have caused the issue

look in the TM? What’s that?…

 

[Coug]

look in the TM? What’s that?…

yeah, well, we aren't allowed to just say "RTFM" anymore...

 

[Mullaney]

yeah, well, we aren't allowed to just say "RTFM" anymore...

.
Yes Sir... Needs to be updated as follows:
RTFM, Page 38 in TM XX-XXXX-XXX-10



Remember, some of these fellas couldn't find their backside if they had a map and a compass and were standing beside a water tower. If the Evil Empire wants to win in a contest with this country, all they need to do is disable the cell phones and HALF of them won't be able find their way home!

 

[Mogman]

Trying not to hijack the thread, but I was as bad as any when I got the first HMMWV and I have had military vehicles on and off for the last 50 years and was somewhat familiar with TMs to begin with, mostly German though.
It is just easier for many to run the the PC and ask, just like RWH has said they would call him instead of looking it up in the TM, and those were trained mechanics.
However as "we" know it is really MUCH easier to look it up in the TMs and that also gives us a higher level of awareness of how our trucks are built.
Now there are some times when we are trying to do something that is "out of normal" and then this place is a great place to get advice, even if some or all of it is not what we want to hear.
ANYWAY prodding newer members to download and use the TMs is because it will make things BETTER for the newbie in the long run rather than simply giving them the information, not because we as a group are lazy or just trying to keep the information to ourselves.

 

[Mullaney]

Trying not to hijack the thread, but I was as bad as any when I got the first HMMWV and I have had military vehicles on and off for the last 50 years and was somewhat familiar with TMs to begin with, mostly German though.
It is just easier for many to run the the PC and ask, just like RWH has said, they would call him instead of looking it up in the TM, and those were trained mechanics.
However as "we" know it is really MUCH easier to look it up in the TMs and that alone gives us a higher lever of awareness of how our trucks are built.
Now there are some times when we are trying to do something that is "out of normal" and then this place is a great place to get advice, even if some or all of it is not what we want to hear.
ANYWAY prodding newer members to download and use the TMs is because it will make things BETTER for the newbie in the long run than simply giving them the information, not because we as a group are lazy or just trying to keep the information to ourselves.

.
Mogman - Very WELL said!

Yep, none of us want to say Read The Book and nobody wants to hear it either -
- BUT the more we hear all hear it, the more we might try it...

AND eventually everybody benefits from it.

 

[hitekrednek]

Well I’ve been reading the TM and couldn’t find that diagram.

I appreciate all the help

im an old fart and do better with a printed manual not a pdf trying to look at a 4” screen through sweat and progressive lenses

 

[hitekrednek]

Mine does not have the rear support bracket

how do I tell which one I need to use ?

 

[Coug]

either bracket fits, but the newer style that goes down to the block

Mine does not have the rear support bracket

how do I tell which one I need to use ?

is a lot stronger.

I posted this link earlier; it has the part numbers for the newer style bracket, as well as the part number for the bolt needed to install to the block. You can take that NSN or part number, search it online (I usually use the PartTarget link that comes up near the top of most searches) and it will usually give you the bolt dimensions.

Sheared generator bracket bolts.