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Eric, the bucket attaches to my 440 loader with pins. My understanding is that the quick attach buckets have a quicker on and off setup. I think, but am not sure, some one mentioned that the pin to bucket setup can be converted to the newer quick on and off setup now used on the new loaders. Does anyone know about this conversion?

Loader for 970 John Deere
Loaders Back Hoes
Replies 8 Post by keoke

Ken, could you check out this math calc that I did on the OEM 7.00/16 and 13.6/24 R1 tires that came with the 970.
Using the SLR spec of 13.6" on the 7.00/16 fronts and the SLR spec of 21.5" on the 13.6/24 rears together with the front to back gear ratio of 1.691 I come out with a slip rate of 6%. My math looks like this, front SLR 13.6X1.691=22.998 divided by rear SLR 21.5= 1.06 minus 1.00 = 6%. Did I go wrong here?
All the stuff I read say an ideal ratio is 1 to 3% and it is acceptable up to 5%. How is that the OEM tires start out with a 6% slip rate?? This, of course, leads me to question my math calcs.
Using the Goodyear formula (rolling circumfence) instead of static load radius, math goes like this.
Front 7.00/16= 87"X1.691=147.12 divided by 13.2/24 rear of 136" gives 1.058 minus 1.00=5.8%.
If the above math is correct (no guarantees here) then it looks like JD started out with tire diameters to large in the front or to small in the rear. This makes it tough to widen the front tire foot print without kicking up the rears as well.

thanks again,
george

john deere 970 tires and rims
John Deere Tractors
Replies 20 Post by keoke

Warren, messed up on the previous message.
Corrected sentence follows.
Your problem is a clutch that will NOT release DUE to the rusting up and consequent locking up of metallic wire strands in the clutch disc linnings to the clutch disc drive plates.
The words in caps above were left out of the previous post.

sorry,
george

JD 870 clutch jump
John Deere Tractors
Replies 9 Post by keoke

Tom, a solid state component on a sending unit is most likely to be a 'thermistor, a temp sensitive resistor. These are used to trigger a low fuel lamp on the dash. The thermistor provides a ground path for the lamp when exposed to air (warm) and not covered with fuel. I did not know they had these warning lamps on tractors. Maybe they are using an automotive sender and simply not employing the thermistor circuit.
On the fuel gauge, some units have the constant voltage regulator built into the gauge. These gauges will have three wires plus a ground lead going attached.

george

RE Wont Start
Parts and Repair
Replies 18 Post by keoke

Hi guys, this may or may not help. There are two basic types of automotive fuel gauges. The most common type is the the "bi-metallic hinge type" this one works as describe by Stan and others. With one acception, it usually does not run on 12 volts. It instead uses a voltage regulator to knock 12 volts down to about 6 to 7 volts. Running a gauge on varying charging voltage would cause it to read hi or low as charging voltage changes. So, a base line voltage must be used instead. The other type of gauge is called the "balancing coil gauge". This type is favored by GM and the English car people. This gauge runs on 12 volts and works the opposite of the bi-metal type when grounding the sender wire at the tank. The gauge will go to empty instead of full. Most industrial and farm equipment will use this type of gauge. Quickest way to tell the difference between the two gauges is when you turn on the ignition. If gauge rises slowly it is the bi-metal type. It takes time to heat the bi-metal hinge and move the needle. If gauge jumps up, or starts at it's last level mark, it is the balance coil (electro-magnets) type.
The reason some of these balance-coil gauges do not return to empty when off (GM) is a damper placed on the needle to keep it from jumping around as the fuel slushes around in the tank.

take care,
keoke

Fuel Guage Problem
Parts and Repair
Replies 17 Post by keoke

Larry, where did you find the heavy duty 6X16 wheels? Did they have any 7x16 or 8X16 wheels as well? Was the 1050 JD built by Yanmar for Deere?

thanks,
george

Front wheels for a John Deere 1050
John Deere Tractors
Replies 11 Post by keoke

Does any one know if the JD970 hyd pump can be upgraded for more flow as well??

george

Hydraulic Pump replacement on JD-950 9cc to 11cc pump
John Deere Tractors
Replies 13 Post by keoke

Don't know about other brands, but a Long 4n1 60" bucket weighs 340#s, 62",346#s and a 64",352#s. Cost run about $1250 to $1300 for the above sizes. You also need a elec scv valve, cost $375. Bucket clamp bite is 3000 psi.

hope this helps,
george

Loader 4in1 Bucket
Loaders Back Hoes
Replies 4 Post by keoke

Northern Hydraulics sell a single tooth sub-soiler made by Howse for less then $200. I use one on my JD970. I had to beef it up by adding a fin under the plate that holds the tooth.

george

subsoiler for rock removal
Operating and Attachments
Replies 6 Post by keoke

Hi, engine horsepower is 33 and pto horsepower is 30. Specs are from operators manual.

regards,
george

970 HP Rating
John Deere Tractors
Replies 3 Post by keoke

Hi, the fact that tractor moves with the clutch pedal fully depress while trying to engage reverse means that the input shaft to the tranny is still turing when it shouldnt be. The brass blocking or sychro rings, through fricton are trying to match input and output shaft speeds which is why the tractor moves a little. On a dual plate clutch, like you have, both plates must free of their pressure plates. The second plate is used for the pto and should also be free. Sometimes, not often, if the pto is not used for a long peroid rust may form between disc and it's pressure plate causing some drag. This is especially true on the newer metallic clutch linnings which are now used in place of the older asbestos linnings now considered toxic.
Try meshing the pto and pressing the pedal all the way down while watching the pto output shaft to see if it starts and stops turning with pedal movement.

good luck,
george

SyncShift Tranny Problems
John Deere Tractors
Replies 31 Post by keoke

Hi, does anybody know if the JD 990 tractor is made by the same people (Yanmar) that made the 970 and 1070 models. How does the 990 compare with the 970 and 1070???thanks,<br>george

JD 990 tractor
John Deere Tractors
Replies 4 Post by keoke