2021 cat 299d3 idle issues

Wilj said: Sorry. A part number which isn’t Cats. Click to expand... Gotcha. Sorry I don't have one. The Cat Part Number for the HP fuel pump is 465-6884. If you can find a Kubota engine dealer (as opposed to machinery) then give them these details and ask for a Kubota Part Number for the pump. The engine model is a V3800, the Serial Number of your particular engine is 2JU3940. I would suggest NOT to tell them that engine is installed in a Cat machine because they might just cop out and tell you to go to Cat for the parts. Just tell them "I'm looking for the P/N of the HP fuel pump on a V3800 engine, Serial Number 2JU3940 - can you help.?"

Try Kubota 1J508-50500. Newest number 1j508-50503 same as Kubota svl95-2 Final tier 4 with Def, denso HP5 pump. Messicks lists at $2888 Unfortunately our cost as an engine dealer is not that much lower on this particular item.

So this is what has happened.

Changed the cogs and tried to line up the flywheel with the dots but nothing.

Wilj said: Changed the cogs and tried to line up the flywheel with the dots but nothing. Click to expand... There is a little bit more to it than that…… Would you like the full procedure.?

Nige said: There is a little bit more to it than that…… Would you like the full procedure.? Click to expand... Yes please

Wilj said: Changed the cogs and tried to line up the flywheel with the dots but nothing. Click to expand... Can you clarify please. Do you mean you can't line up the marks or do you mean the engine won't start after lining up the marks.? The issue is that the engine should have been timed BEFORE you started disassembling anything. Effectively what you are doing is a HP fuel pump R&I but without actually removing the HP pump. NOTE: You have to set TDC on cylinder #4, not the more usual cylinder #1.

After you lose timing you have no choice but to remove the cover and re-time from scratch, all the way to the crankshaft gear.

Nige said: Can you clarify please. Do you mean you can't line up the marks or do you mean the engine won't start after lining up the marks.? The issue is that the engine should have been timed BEFORE you started disassembling anything. Effectively what you are doing is a HP fuel pump R&I but without actually removing the HP pump. NOTE: You have to set TDC on cylinder #4, not the more usual cylinder #1. Click to expand... The engine wouldn’t fire after lining up. The “fitter / mechanic” rotated the flywheel only to the dots. Apparently he hoped that it wasn’t far out when the cogs went. The fuel pump isn’t on a key with the cog. Is there a way to see where it needs to be?

ozarkag said: After you lose timing you have no choice but to remove the cover and re-time from scratch, all the way to the crankshaft gear. Click to expand... When you say start from scratch. You mean take cover off as in pic? Or just get cylinder 4 TDC?

AFAIK you will have to remove front timing cover and line up the timing marks, starting at the crankshaft. The reason is that there is no timing pin on the pump, so TDC doesn't help. If there is a way to use Niges' procedure once timing is lost I am not aware of it.

ozarkag said: If there is a way to use Niges' procedure once timing is lost I am not aware of it. Click to expand... No there isn't. The idea is to time everything BEFORE it is pulled apart. As mentioned by @ozarkag the front cover has to come off and all the gears in the photo below have to be timed as a starting point, then move to the gears for the HP fuel pump. EDIT: Cross your fingers that you will find timing marks. According to the procedure there may not be any. In that case the engine will have to be timed working from 1st principles which may be beyond the capability of your fitter.

We had this very issue on a 299 D3 and it was a froze up pump. Got a used one for a grand on ebay and it works good again.

The spring was broken, as in the first pictures, and we replaced it. If anyone needs this spring for the injection pump, we have that one in stock.

Thegreatone said: That is what I was thinking…. I am going to go into business to make a kit for these and sell the hell out of them… Click to expand... Same problem here. I contacted Denso Global office. No luck. Bought a new pump from Cat dealer. $2942 usd. They regard the pump as an “unserviceable part”!!!!! Asked service manager to save me one if they have one they replaced. Said he couldn’t do that.

ColdBlackWind said: Bought a new pump from Cat dealer. $2942 usd. They regard the pump as an “unserviceable part”!!!!! Click to expand... That's probably because Denso told them that. Remember Cat don't make the pump. If Denso don't supply repair parts for it then it's gonna be hard for Cat to offer them for sale. Just sayin'.

Yes sir. There is a proprietary agreement between Denso/Kubota/Cat.

nevinsteiner said: The spring was broken, as in the first pictures, and we replaced it. If anyone needs this spring for the injection pump, we have that one in stock. Click to expand... Sir, I was reading this thread and after inspection of mine, I have found the spring is broken. I would like to purchase one of them. Do you have a way for me to contact you to order one?

Valleywidellc said: Sir, I was reading this thread and after inspection of mine, I have found the spring is broken. I would like to purchase one of them. Do you have a way for me to contact you to order one? Click to expand... He is on ebay.

nevinsteiner said: The spring was broken, as in the first pictures, and we replaced it. If anyone needs this spring for the injection pump, we have that one in stock. Click to expand... Where can I get ahold of you?