John Deere 445 Kawasaki FD620d Plastic Cam Shaft Replacement
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- เผยแพร่เมื่อ 28 ม.ค. 2012
- 1998 and earlier JD 445's have a plastic cam gear that fails around 1000 hours. Easy to replace with basic hand tools.
Update 2023-04-24: 10 years later, this engine now has 1500 hours without issues.
Spreadsheet of parts and prices here:
docs.google.com/spreadsheet/c... - ยานยนต์และพาหนะ
Best video yet! Thank you for this, especially the details!
Forgot to mention in my question. Great video thanks.
Thanks for your excellent video... I spent $250 with the local JD 'experts' and a checked with a second one who said they have never heard of it... They said $1000 to open it up, but probably $4000 for a new engine.... (They're $1200 online... labor is a bitch!) the camshaft kit is $300 from JDeere... doing it myself now, and appreciate all the youtube help I can find
Thank you.
Makes sense. Ordered the Al covers to replace the plastics. Thank you.
ndemarte Get the gaskets too if they don't come with them.
Yes sir, got the "kit".
Mike great job on the Video i'm picking up a 445 this week
I like it.. good job..
great video fellow buckeye
Mine went at just over 1000hrs, got 1900hrs on it now. Just ordered a fuel pump to replace the original. I have the 60" deck and 47" blower. Great machine. Hoping to get 3000hrs out of it.
Iv got one with over 6000 hrs they run for ever
@@Danielnicky1997 Thanks for your comment, Just replaced the oil pump spur gear at 2800 hrs.
Help full video , I pull my moter,took it apart, cam gear ,water pump, pushrods bent , bought a kit off ebay ,around $300 the bigger kit with head gaskets , I add water pump,vale seals, plugs,oil filter,belts and hoses , around $460 when done , only a few problems , frount oil seal was hard to get in , mess up first one ,ball fell out of oil gear , found on ground and had to find where went, , pull replaced the head gasket and vale seals and spring , had 1200 hours and just wanted to do ever thing once , I clean the vale up and top of piston wear year dirty , make sure to buy the right antifreeze , it run grate now , sound like new , very strong and smooth , it was I long project and was worred if run when I finished . But I had fun and was not to hard the people at JD were very helpfull , on where that ball barring fell out from, and the ebay store in Pa , was help full to , not sure why kit did not come with vale seals ,
great video! i have a 1994 320 with the FD590V. it has 998.0 hours. wonder if i need to go ahead and replace cam gear?
Great 1
oil pump gear also goes out on these engines, have replaced 3
They have a steel gear replacement. Repower pros $50.00
My 1996 JD 425 had 1110.00 hours. Back it out at low RPMs from the garage and shut it off and it did not re start.
You can tell if it is failed camshaft gear if it spins over like there is no compression. Try pulling a spark plug, and turn over the engine with your thumb over the plug hole. If there is compression, you will feel it alternately suck in and push out air. If no compression, you have an internal failure of the engine and it must be torn down.
Great video. Looks like my cam gear just went. Expecting a big bill from the local JD dealer. Hope it has many years of life left in it. Before my problem there always seemed to be high crank case pressure. It would blow the oil filler cap clean off. Any ideas? Thanks
I have an argo conquest 2000 model it looks like it has the same engine. Is smoking. And I want to rebuild the whole thing. Same part number.
Well done, the video helps even with my non JDeere ZTR Woods mower. It came with plastic gear on the camshaft. Did you do a valve job or simply replace the springs and pushrods?
Bill
Roush2RPP I just replaced the rods and springs. The valves were fine as is and didn't need ground.
Mike Teets Did you lap them and clean up the ports and back side of the valves?
I also installed a new water pump simply because the engine was open and installing a new one is as easy as an old one.
Did you replace the oval o-ring and the round one next to it on the "pin" that positions the crankcase cover (there are two on the block surface for the cover. Only the one next to oval shaped o-ring is present.
I wonder if Honda's are pretty close to the inside of this
Mike, Thx for this video. I had the dealer do this service to my 445 some years back, but I recently found oil leaking from around the head area on the left side. It collects a little bit in the spark plug recess and will burn off if it makes it to the exhaust pipe flange. It is a slow leak now... Would a bad head gasket cause this?
ndemarte The head gasket is below the spark plug hole, but the valve cover gasket is above. That is the likely culprit. If you have plastic valve covers, it could be cracked. You can buy metal ones to replace them.
+ndemarte may i ask what the dealer charged? my 1994 320 has 998 hours. i probably need to do this upgrade soon.
+Glyn Robinson I think it was around $700. Ouch. But need to have the thing running....
Is there a way to check to see if I have a steel canned gear without taking the engine apart? Maybe with a bore scope?
A forum post somewhere mentioned that you may be able to see it by removing the water pump. I just replaced the water pump on a newer 445 and it was not obvious how you could see it through there, but I was not looking for it. You can look up the engine code (explained here on Kawasaki site: www.kawasaki-engines.eu/en/support/reading-your-engine-label/) AS01 and BS01 have a nylon gear, all others have steel.
do you have to pull the engine out to do that or can it be done while it sits in the machine? How long did it take you to do it? I have a 1995 425 with the plastic gear and about 500 hours.
Others have said it can be done in place. It only takes a few more bolts to take it out and then it is easier to maneuver on the workbench. Ultimately I would say it is faster to remove. If you had the parts on hand, it could be done in 3-4 hours.
Can you replace it in the tractor or do you have to pull the engine?
My 1998 went bad at around 500 hours so John Deere split the cost of repair.
Hi i have a 6x4 gator with the same motor.The motor might be shot can i adapt any fd620d motor to fit back in it?Thanks Todd
Yes, you should be able to swap tractor for gator engine. Just keep track of mounts and connections.
Anyone do it, 3 differences I see is non tapered crank, taller oil fill, and doesnt have a carb
Just found your video, it's very good and was lots of help. The question I have is: I can't find any information as to whether the head bolts are suppose to be lubricated or dry prior to torqued up? Do you have any info or a lead on this info.
+Pamela Rash I did dry... no problems yet.
+Mike Teets Thanks for the info!
+Pamela Rash you should use anti seize or sealer, torque amounts take this into consideration head bolts should not be installed dry
Is there a way to confirm if these engines have the steel cam gear in them while in the machine?
I have two of these motors in running machines that I use currently and was told they were both replaced but haven't confirmed. I'd certainly like to be able to if it's possible!
Not really without pulling the water pump and then you would need a new gasket. Generally folks recommend just running them until you have a problem. Worst case, you bend the push rods and have to replace them... which you would do anyway on a rebuild.
I bought a used 425. 1994 model with 1000 hours. Should i take the time to remove engine and see if the cam is steel or not?
I would not. The job to replace it doesn't get easier whether you do before or after failure. The only difference might be bending the rods but they are only $4 each.
Mike, what was the total cost minus sweat equity ?
$345 with all parts purchased through John Deere in 2012. Spreadsheet is in the description above.
My church has a 425 that is just short of 1000 hrs. Same problem. My question is is it an interference engine. I noted you had bent push rods. How about the valves?
I don't think it is... but that was 10 years and 800 hours ago on this tractor. I did not replace the valves nor notice any damage. Still runs strong, no oil consumption. Performs as good as my other 445 which is at 600 hours.
Did you have to change the crankshaft gear?
No, it is steel and was undamaged.
You do not need to pull the engine
could you use this engine on a gokart?
Sure you could, but I wouldn't recommend it. It is a big, heavy, low RPM engine. Gokarts would be better off with a smaller, lighter engine. For the price of a high hour used FD620 you could get a new 8-16 hp honda or briggs engine.
These engines have a problem and cam gear is it
Common failure
Just a comment. I have seen and heard of manufacturers who build engines using plastic formed parts, internally to their engines to in my opinion, cheap out. Very disappointing for the money they are asking for these engines. Built in adolescence it appears. Just saying.