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The front wheel supports of the M4500DT use 50mm ID DU bushings ( PTFE composite plain bearings, dry bearings). When I dismantled them to service the axle, I found that the bores/mating shafts were lubricated, looked like moly grease or similar dark colour and plenty of it, not running dry...

The splines on the input shaft are worn almost to stripping point. The local dealer says that the pinion (and crown wheel) are discontinued. They aren't discontinued according to the US parts websites but I can't order from US due to Kubota regional restrictions (and price is eye-watering)...

Hoping someone can share how they've done this successfully, because I can't figure out how to separate the bevel gear case from the front wheel case. Don't want to bust something in the process because all the gears and most bearings look like new. Only 5000+ hours on them. Doing this to...

This might also apply to changing the lead-acid battery on your tractor to LiFePO4, but for me its about my Honda TRX500 quad bike. Specs for LiFePO4 automative 12V batteries say the charge volts needs to be 14.6VDC or less to avoid damaging the battery - even if the battery has a built in...

Does anyone know of an English language website that collects manuals for old machinery - like my 1970s Someca K28 hay mower - and makes them freely available? Like Kubotabooks.com does for our tractors. Reason I'm asking is that I've translated the French operation, maintenance and parts...

What do you think of it?

One for the industrial chemists :) I'm told that this stuff loses its effectiveness with time and other things. At supposedly 300 g/litre of sodium hypochlorite when fresh, the specific gravity is stated in the MSDS to be 1.15 to 1.20 @ 20 degC. If it loses effectiveness, does the SG reduce...

Greetings, does anyone know what the point of this thang is and how it is supposed to be used? I can't find any info about it on the 'net. Thank you.

Pretty sure this fits on an older (!) type sewing machine, but does anyone know what it's called and what it was supposed to do? Embossed on it is "AMSO", "D.B.P." and stamped underneath "Made in Germany". Its about 6" wide, 1.75" high, and 4.5" long. Thanks in advance.

Hi all Question 1 of 2: Do you think it's acceptable to start a cold diesel engine on half throttle? Its what the operator's manual recommends: (This tractor is about 40 years old, 6 cylinder 2.6 litre IDI engine) As soon as the engine fires I back off the throttle, but I still worry that...

Fleetguard/Cummins is putting on some filtration and coolant webinars this month. I respect the brand (along with only a couple of others) and would attend but for the timezone difference...

I was given a K28 hay mower recently and from the little work I've done with it, it works well, looks mostly in original condition. It's a 4 disc 3 ph mounted job, about 5' cutting width, from the 70's. One thing I need help with: what the oil level should be in the gearbox. According to the...

Hiyas, does anyone know what service letters or bulletins Kubota published in the late 70s - early 80s, for augmenting or correcting their WSM, and what was/were the official name/s? I noticed in a WSM for the M4500 that there are a number of hand-written edits to dimensions which must have...

Has anyone seen this gunk inside intake ports before and knows the cause? [images below] I was surprised when I pulled the intake manifold of my M4500 model S2600 engine (82mm stroke precombustion chamber, 6 cylinder, naturally aspirated) to find soft thick oily deposits (not hard carbon) have...

My S2600 WSM refers to a "Fuel tightness of pump element" test Has anyone done one of these tests of a Bosch/Diesel Kiki K type injection pump? The purpose of the test is to find out if each element of the fuel injection pump is delivering appropriate pressure to the injector line, without...

I'd like to add a bale clamp on the front end loader of my M4500DT. Currently it has one one-way valve, and one two-way valve both used for the front loader (single acting lift cylinders and double acting curl cylinder). So I need to add a two-way valve for the double acting bale clamp but I'm...

I had a couple of conversations with a guy who came up through the ranks from mechanic and ran a small Kubota dealership last century. I was wanting to know about stuff to watch out for on my M4500DT. He had some interesting observations that I thought were worth sharing with anyone...

I pulled the injectors to check the head clearance, do a compression & leakdown test, and have a look at the injectors themselves. 5 of the 6 injectors are stamped "1570" and "S1", but one is stamped "1570" and "S2". Can anyone please tell me the difference if any between an S1 and an S2? Does...

Hi, can anyone tell me the thread diameter and pitch (circled in the image below), to save me pulling one of my injectors prematurely? I need to find or make a compression test adapter to fit the injector hole in my M4500DT - the injectors (15721-53020) are same as many other models apparently...

Help! This tractor is supposed to have a S2600 engine, and on the engine block beside the injection pump is the serial number "S2600-A-1599". So far, so good. HOWEVER the data plate on the pump itself reads "ND-PFR6M55/1 ND076" and "S2200". Also, the dipstick is embossed "S2200". Can anyone...