Search found 360 matches

by DrLoch
Thu Oct 08, 2020 2:39 pm
Forum: Late model JD crawler technical support
Topic: Basic loader control valve flow-direction question...
Replies: 6
Views: 147

Re: Basic loader control valve flow-direction question...

More isn't always better in some cases which is what I believe Lavoy is implying. Hope you know, more flow requires more horsepower you don't get anything for free unless it's our government, which is another subject all together. You'll no doubt figure that out, you need to taylor the pump flow cur...
by DrLoch
Sat Sep 19, 2020 6:00 am
Forum: Late model JD crawler technical support
Topic: 450C HLR Pressure
Replies: 3
Views: 257

Re: 450C HLR Pressure

Does the pressure drop when checked in all of the 3 ranges, Hi-Lo-Rev? If it does then it is something common to all. There are some line hard lines under the cover. Did you do a complete clutch adjust as per the manual? There are clutch packs inside the transmission the engage and disengage the var...
by DrLoch
Fri Sep 18, 2020 7:18 am
Forum: Late model JD crawler technical support
Topic: 450C HLR Pressure
Replies: 3
Views: 257

Re: 450C HLR Pressure

Pressure should be the same in 3 ranges. A good pressure is 180 PSI. If it
by DrLoch
Wed Sep 16, 2020 6:55 am
Forum: Late model JD crawler technical support
Topic: 450B shifting speed
Replies: 11
Views: 717

Re: 450B shifting speed

As others have suggested, you need to go through all the preliminary checks and adjustments prior to adjusting the needle valve that controls shifting speed. Optimum pressure for the HLR is about 180 PSI.
by DrLoch
Tue Aug 25, 2020 6:30 am
Forum: Late model JD crawler technical support
Topic: 550B tracks stop...after some run time
Replies: 6
Views: 703

Re: 550B tracks stop...after some run time

Given you just had transmission service, did it do this before the service work? If not, next question would be what fluid did they use? Appears to be more to the issue.
by DrLoch
Fri Jul 31, 2020 7:50 am
Forum: Late model JD crawler technical support
Topic: 450B problem
Replies: 40
Views: 5688

Re: 450B problem

Pump will only go in/on one of two ways, correct or 180 degrees off since it's the tang on the end of the driveshaft that goes into the distributor rotor assembly. Lining up the pin in the flywheel and the mark in the window is to insure you aren't 180 degrees off on your injector timing. If you loo...
by DrLoch
Tue Jul 21, 2020 6:59 am
Forum: Late model JD crawler technical support
Topic: Dumped my hydraulic fluid, am I damaging my pump?
Replies: 16
Views: 2844

Re: Dumped my hydraulic fluid, am I damaging my pump?

If you are looking for a line that is Flexible, take a look at this https://ph.parker.com/us/en/multipurpos ... -z-form-mp

E-Z Form MP Oil Resistant Flexible Suction Hose, Multipurpose, Series 7219

Have had good results with it in tight areas.
by DrLoch
Tue Jun 30, 2020 6:52 am
Forum: Late model JD crawler technical support
Topic: Dumped my hydraulic fluid, am I damaging my pump?
Replies: 16
Views: 2844

Re: Dumped my hydraulic fluid, am I damaging my pump?

Jim has provided the best answer. If it's a loader, my guess is that it's the pressure line since the only lines running tot the front through the belly pan are the pressure and suction lines for the pump. If you wrap the line as suggested, don't move the bucket handle. You may be able to get it out...
by DrLoch
Tue May 26, 2020 6:46 am
Forum: Late model JD crawler technical support
Topic: JD 350B Steering Issue
Replies: 11
Views: 1677

Re: JD 350B Steering Issue

That information would be covered in manual.
by DrLoch
Fri May 15, 2020 7:32 am
Forum: Late model JD crawler technical support
Topic: 450C Crawler w/Backhoe blowing hydraulics
Replies: 9
Views: 1736

Re: 450C Crawler w/Backhoe blowing hydraulics

Can you could, please post a crude hydraulic schematic of how you have this plumed before you seriously injure yourself or someone else. Injection of hydraulic oil into bloodstream is a very serious thing that could kill you or someone else. I would also like to suggest you stop using this machine i...
by DrLoch
Sun May 10, 2020 6:51 am
Forum: Late model JD crawler technical support
Topic: Possible water pump issue, JD450
Replies: 9
Views: 1473

Re: Possible water pump issue, JD450

Agree with Jim having waited myself. Didn't trash the radiator but did trash the fan blade. Fix it now. Little suggestion if you do remove the nose. Pull the pump coupling back and put extra fan belts in before reconnecting pump. I zip tied them out of the way until needed.
by DrLoch
Wed Apr 22, 2020 7:07 am
Forum: Late model JD crawler technical support
Topic: 450c 6-way fittings?
Replies: 46
Views: 6176

Re: 450c 6-way fittings?

Flow = speed
Force/pressure = restriction of flow,
Reduced pressure = reduced force
If you want to reduce the flow the correct method is to replace the pump with one that is smaller, i.e. less cu/in pre rev equals less flow for a given RPM with a gear pump.
by DrLoch
Thu Apr 16, 2020 6:14 am
Forum: Late model JD crawler technical support
Topic: Hydraulic oil full line
Replies: 4
Views: 716

Re: Hydraulic oil fill line

I'm not familiar with the term "fill line" Elaborate

My bad I didn't read it correctly.... that was both a duh and old moment. I generally have mine toward the top with bucket down and level with the ground.
by DrLoch
Thu Apr 16, 2020 6:12 am
Forum: Late model JD crawler technical support
Topic: 350C ENGINE OIL PAN DRAIN PLUG STRIPPED
Replies: 4
Views: 790

Re: 350C ENGINE OIL PAN DRAIN PLUG STRIPPED

Don't use a helicoil.... use this https://www.timesert.com/. Or, tap for oversize plug as others have suggested.
by DrLoch
Wed Apr 08, 2020 6:55 am
Forum: Late model JD crawler technical support
Topic: 450-C Injection pump and timing questions
Replies: 5
Views: 842

Re: 450-C Injection pump and timing questions

2nd that on the umbrella seals. Get extra's, it's better to have them and not need them than need them and not have them. Getting the engine to TDC is the correct way, but once your pull the pump you will notice a dot on the end of the tang shaft. There is a corresponding dot on the Distributor roto...