So, buddy of mine that I work with got a 95, 4x4, auto supposedly built for pulling trailers , 220k 8' box, regular cab. Title says gas, also brake booster doesn't seem to be hydraulic like on mine, it's round like on a gas truck but no vacume lines going to it or place for it. Anyhow it was leaking oil out front someplace and guy that was selling it just got it and decided to sell it, so it's a cat in a bag. I looked at it with him and gave him my . For $2900 it seemed like it was fixable and drove ok accept it seems to shift to od too soon and when flored doesn't kick down and seems to be hunting lock unlock. Front cover was soaked and dirty, seller said it was front seal or so he was told that by po. I said right of way that it seems like oil is coming from top someplace but who knows could be flinging of the crank upwards. Now that he's working on it he found this, see picture. His question, how much is he looking at to fix crap inside assuming worst case scenario. I'll update pictures as he sends them to me. Trying to get him to join this site, but I think he's already thinking of selling it. 

Edit: all gears seem fine, pin is missing, in the oil pan I guess. How important is it to put new pin in, it it only for assembly and now that the case is in place it will be fine or? On the case it self  I'm thinking jb weld? He feels better now that the gears look good. 

Edited August 11, 20177 yr by Dieselfuture

No expert here but if it is the timing case you have to pull the cam to replace it. I dont think the 12v are any different from the 24v on that one. Just my uneducated observation.

KDP Struck again... (Killer Dowel Pin)

 

You need to pull the cam out and replace the entire gear case. 

He's going to jb weld it, we'll see how it goes. What about the pin should he get one or leave it out.

And anyone knows why tranny doesn't kick down from od and seem to hunt lock unlock. 

You don't need another KDP pin and the trans Hunts over the gears usually because of A/C voltage noise from an alternator going bad. Do search on this site to understand excessive AC voltage and how to test for it

Edited August 12, 20177 yr by JAG1

I'd get a new pin, It keeps all the gears aligned properly.

 

'95's came stock with vacuum boost brakes.  The connection should be here. 

Cowboy, There must be something I don't understand... how is it that he should get a new pin when only the factory uses it during assembly? Are you saying he needs it to help line up the gears and afterward he should tab the KDP?

 

I just don't understand.. are you saying line up the gears for timing to each other? I thought they had marks to go by.

 

Thanks in advance.

These diesels can rattle a house down.  The pins job is to keep the timing case 'centered' on the block, due to the injection pump and vacuum pump being bolted to the case, if it shifts, the gears will no longer be in alignment with the cam gear which drives them.  Because of all the weight hanging off the case with a 50lb injection pump and the engine vibration, it's not unlikely.   The handful of bolts holding the timing case to the block are also known for backing off due to engine vibration.  So it's a good idea to take them out one by one and red locktite them.

I gotcha. Thanks for the explanation,  A lot better than being in a confusenation..

1997 was the first year for hydraboost on the 12v.

 

I'll 2nd replacing the pin.

8 minutes ago, jlbayes said:

I'll 2nd replacing the pin.

 

I say replace the gear case and the pin.

3 minutes ago, Mopar1973Man said:

 

I say replace the gear case and the pin.

 

That as well as bad as it is broken.

He's getting a pin and too cheap to get a case, he got it jb welded and feels pretty confident in his job, time will tell. Also putting in a new seal, any tips for him on doing seal, post something here. He has a link to this thread and been checking it. He also says thanks for the help. 

@jlbayes what fuel pressure should he be seeing to p7100, all stock at the moment, but he's been reading things about boost elbows and fuel plates.

Edited August 14, 20177 yr by Dieselfuture

 

" ...he got it jb welded and feels pretty confident in his job..."

 

Sorry, but did anyone else spew coffee all over their monitor?

 

Couldn't help it....  it just slipped out.

 

Tell him that made my day!!! hope it lasts forever!!

 

Hag

Edited August 14, 20177 yr by Haggar

Believe me I tried, he has his ways and who knows it just might last.

His determined to get it done today, got these parts from local cummins, $6 kdp, $37 seal, making a tab now,  jb weld priceless....

It is something like 15-25psi. I don't have the fsm in front of me at the moment.

17-22 psi idling, 25-35 psi @ 2500 RPM no load is the spec.  I got mine at 35-40psi because it gives me the warm and fuzzies.

Well seems like his jb weld been holding up and no leaks there for now. Looks like his vacuum pump needs to be rebuild dripping oil a little. 

On his tranny measured vac and it's 0.15 at idle so it's a fail. We took fuse out and lock up didn't seem to work at all when going about 60-65 and applying brake. And his tranny just seem to shift up too soon, guessing kick down cable needs adjusted. 

Little update not related to gear case but don't want to start a new thread. He's been hunting for tranny problems and found that brake switch is bad along with wireing and maybe headlight switch also. Still need to address his alternator but I guess this is a common problem. Do they sell brake switch wireing harness 

Here it is

Edited August 30, 20177 yr by Dieselfuture

Not seen one do that before.

Another update for those who is interested. Finally figured out why torque converter would do a lock unlock with similar symptoms as a bad alternator. So he had his alternator rebuilt now has about .03 VAC but that didn't help the way torque converter was acting up. Problem was in TPS voltage setting, his whole lever must have been worn enough it wasn't grabbing sensor to rotate it and change voltage, it was basically always reading 0.3 volts so I made a shim and we got it to about 1.2v. Now torque converter does what it's supposed to, he's all happy and giggly.