621 cat elevator scraper diff problems

Need to know how my diff locks in on my 621 elevator scraper is it hydrolick engage or air engage Any help would be greatly appreciated

If this is the same 23H1016 you posted about before then the diff lock is air-actuated. It's mentioned in the attached System Operation document.

Ya see that thanks my machine is old and has been messed with a lot I could replumb it if only I could find the air pedal that engages it and disengage it my diff any ideas

621 cat need trans info said: Ya see that thanks my machine is old and has been messed with a lot I could replumb it if only I could find the air pedal that engages it and disengage it my diff any ideas Click to expand... Maybe start by tracking down a Parts Manual.? Then you could search for what you need by Part Numbers.

Nige said: Maybe start by tracking down a Parts Manual.? Then you could search for what you need by Part Numbers. Click to expand... For 23H1016 you need Parts Manual UE070042 for the tractor and (assuming your scraper S/N is 37Gxxxx) then you need UE070016 for the scraper. Here's a link to the tractor Parts Manual on eBay . And here's one for the scraper, also on eBay Neither of them will break the bank.

Hello good sir thanks for information got another problem with locating an carrier assembly for my planetary book part number is 4d5780 ordered that from used parts its the right part but it's to big in size parts guys r dumbfounded any help would be greater appreciated thanks

Well 4D5780 is supposedly the correct Part Number for your machine. Are there any part numbers located anywhere on the carrier.? From memory it is a casting so it should have something marked on it somewhere. Can you post photos of any numbers you find on it please. Also please take a look around the rest of the planetary final drive assembly on your machine for any Part Numbers that might be cast into it and take photos of them also.

Cat warehouse sent me an assembly as u see its too big the 1 with tape measure is mine we r not coming up with anything else yet Thanks for the help good sir

The original carrier has "4D5779" cast into it. This is the casting number of what is used to manufacture 4D5780. What is the number cast into the replacement on the left side of the photo indicated by the arrow.? It looks like 1D-something but I can't read it very well. Whatever it is, it's not 4D5779.........

621 cat need trans info said: parts guys r dumbfounded Click to expand... Thats shocking! LOL

7d4295 -16-b

621 cat need trans info said: 7d4295 Click to expand... So not the 4D5780 you asked them for............ It fits the following models - 621B (45P Serial Number prefix), 623B (46P), and 627B (14S & 15S). 621E (6AB), 623E (6CB & 6YF), and 627E (6EB & 6GB). I don't see 23H appearing anywhere on that list........... Tell them they should have read the Part Number on the carrier before they shipped it to you - then they would have realized it was wrong and saved themselves time and money.

So these ones they sent r definitely wrong the warehouse marked them wrong am shipping them back to them 4d5780 is the right 1 anybody know of any would be nice

621 cat need trans info said: So these ones they sent r definitely wrong the warehouse marked them wrong am shipping them back to them 4d5780 is the right 1 anybody know of any would be nice Click to expand... Go to www.machinerytrader.com and put the part number on the parts search. It looks like everyone in the country has at least 1.

Vetech63 said: It looks like everyone in the country has at least 1. Click to expand... And look carefully at the Part Number if the ad has photos. There seem to be a lot of 4D5780's out there that aren't, if you get my drift..........

Thankyou i found an reliable 1