Search found 539 matches

by JWB Contracting
Sun Jul 12, 2020 7:03 am
Forum: Late model JD crawler technical support
Topic: pic of pto shaft
Replies: 7
Views: 89

Re: pic of pto shaft

Are you looking for a PTO shaft or a winch drive shaft. Winch drive shafts should be readily available.
by JWB Contracting
Tue Jul 07, 2020 9:28 am
Forum: Late model JD crawler technical support
Topic: 450C drive lagging then nothing
Replies: 3
Views: 148

Re: 450C drive lagging then nothing

A C is more difficult to diagnosis vs a B as the steering clutches are operated by the same pump as the transmission. We start by checking the transmission operating pressures and adjust first. If pressures are poor can be many causes but we check the steering clutches for leaks first. From there we...
by JWB Contracting
Sun Jun 28, 2020 9:44 am
Forum: Late model JD crawler technical support
Topic: 350B shifting problem
Replies: 4
Views: 224

Re: 350B shifting problem

Try engaging your reverser then stepping on the clutch. At times the Tranny gears are not lined up to shift.
by JWB Contracting
Thu May 14, 2020 10:46 pm
Forum: Late model JD crawler technical support
Topic: 450C Crawler w/Backhoe blowing hydraulics
Replies: 9
Views: 1109

Re: 450C Crawler w/Backhoe blowing hydraulics

Here is my understanding of how a hoe hydraulic system should be plumbed Pressure oil to loader valve Return line from loader valve to tank Power beyond fitting installed in loader valve Hoe supply line installed into power beyond Hoe return line tied into return side of tank, tee with loader return...
by JWB Contracting
Mon Apr 27, 2020 6:23 am
Forum: Late model JD crawler technical support
Topic: 3325 winch
Replies: 3
Views: 422

Re: 3325 winch

This would indicate the clutch portion is not releasing. You need the pull the cover and remove the clutch cover (left hand side when standing at back of your crawler) The clutch piston or discs will need servicing.
by JWB Contracting
Mon Apr 06, 2020 9:10 pm
Forum: Off-topic discussions
Topic: trailer connector problem
Replies: 21
Views: 1259

Re: trailer connector problem

Try checking the fuse for the brake controller, should be under the hood on a GM, is on my 2010. I use a plug in socket tester from princess auto (Canada) which looks like a 7 blade RV connector that plugs into the truck end and has indicator lights to show what is working or not. Your truck you get...
by JWB Contracting
Mon Apr 06, 2020 9:02 pm
Forum: Late model JD crawler technical support
Topic: 450C Crawler w/Backhoe blowing hydraulics
Replies: 9
Views: 1109

Re: 450C Crawler w/Backhoe blowing hydraulics

Is this a loader or dozer? A loader normally uses a power beyond fitting in the loader valve that sends high pressure oil to the backhoe valve, which then gets returned to the tank. A dozer machine often uses a diverter valve so you can either use the dozer or hoe. We have rigged up dozers with flow...
by JWB Contracting
Mon Mar 30, 2020 6:50 pm
Forum: Late model JD crawler technical support
Topic: HLR pulling in neutral
Replies: 2
Views: 409

Re: HLR pulling in neutral

Unfortunately the normal cause of moving as described is problems with the HLR manifold caused by bad bearings. Do you have any transmission fluid leakage between the engine and transmission?
by JWB Contracting
Fri Jan 17, 2020 7:26 pm
Forum: Late model JD crawler technical support
Topic: Winter starting a 450C. Block heater? Tank heater? My options??
Replies: 21
Views: 2147

Re: Winter starting a 450C. Block heater? Tank heater? My options??

Drag on a 450 is not much of an issue if your clutch is working properly and stepping it down all the way. The clutch pedal cuts off oil to the transmission for the first portion of travel, then activates the dry clutch behind the engine. So only spinning the engine and hydraulic pump. Our 450C load...
by JWB Contracting
Mon Jan 13, 2020 7:43 pm
Forum: Early model JD crawler technical support
Topic: Transmissions 256 & 396
Replies: 2
Views: 493

Re: Transmissions 256 & 396

We have run into the same problem and had to change the frame rails. We were intentionally salvaging the complete rear end and final drives from a late model diesel and installing early model 4 speed and final drives.
by JWB Contracting
Sat Jan 11, 2020 7:31 pm
Forum: Show & Tell
Topic: Any other 555 "Triple Nickel" owners out there?
Replies: 5
Views: 2981

Re: Any other 555 "Triple Nickel" owners out there?

Deere is about the only older skidder worth having for the safety conscious. The older 440 and 540’s had a hand activated parking brake, large wet disc enclosed on the rear of the transmission. For Clark and others brakes were an after thought and probably didn’t last past the first year. I’m curren...
by JWB Contracting
Fri Dec 06, 2019 9:23 pm
Forum: Late model JD crawler technical support
Topic: JD350C question
Replies: 9
Views: 1273

Re: JD350C question

With the amount of labour involved to replace why not go new. We have went as far as welding 2 new couplers together and then cutting to maximum length to avoid future rebuilds. We ran Widepads with hoes and turned up to 3-179 engines so we took ever step to improve longevity and reliability. You co...
by JWB Contracting
Thu Nov 21, 2019 6:37 pm
Forum: Late model JD crawler technical support
Topic: 350 B Backhoe Options
Replies: 4
Views: 730

Re: 350 B Backhoe Options

We’ve done a number of conversions with both various models of case and ditch witch hoes. The big case hoe is about the best you can get although I have a Vermeer hoe loose that is just slightly bigger. We did try the smaller and older ditch witch and case hoes, they worked but we ended cracking the...
by JWB Contracting
Mon Nov 11, 2019 10:49 am
Forum: Late model JD crawler technical support
Topic: 555G what plugs to pull and location to drain transmission hydraulic oil
Replies: 8
Views: 1106

Re: 555G what plugs to pull and location to drain transmission hydraulic oil

On the G series machine the transmission is a large tub that holds the transmission and steering clutches. One big common open cavity. Holds a lot of oil.
by JWB Contracting
Fri Nov 01, 2019 6:07 pm
Forum: Late model JD crawler technical support
Topic: JD450C third head gasket This is getting old
Replies: 159
Views: 17795

Re: JD450C third head gasket This is getting old

I would recommend going the 4239 route. They have more torque at low RPM’s. We transplanted a natural 4239 into our yard 450C and works real nice. They seem to start easier as well. We just salvaged 2 of them from 450’s we got in and installed 4219’s. Both machines had main engine clutch issues so t...