Search found 312 matches

by DrLoch
Thu Dec 06, 2018 7:19 am
Forum: Late model JD crawler technical support
Topic: Replacing Springs on Pressure Plate 450
Replies: 10
Views: 316

Re: Replacing Springs on Pressure Plate 450

Don't know about most, but, if I've gone through the trouble and effort to get to the offending unit or pressure plate in this case, I'm going to replace it. My time is valuable to me. Mine had a bad starter drive, I replaced the compleat starter with a newer gear reduction for about the same money ...
by DrLoch
Wed Nov 14, 2018 8:27 am
Forum: Late model JD crawler technical support
Topic: JD 450C loss of power when put in gear
Replies: 7
Views: 373

Re: JD 450C loss of power when put in gear

Correct way (Readers Digest Condensed version) to remove the injector pump is 1st remove the little cover off the side of the injector pump, 2 screws hold it on. Underneath is where the timing marks are, turn the engine over counterclockwise as viewed from the flywheel end until you see the timing m...
by DrLoch
Mon Nov 12, 2018 8:03 am
Forum: Late model JD crawler technical support
Topic: JD 450C loss of power when put in gear
Replies: 7
Views: 373

Re: JD 450C loss of power when put in gear

Check/replace fuel filters and search Mouse turds. I've had both situations but it sounds like the governor ring coming apart and plugging the check valve in the cover.
by DrLoch
Tue Oct 30, 2018 6:25 am
Forum: Late model JD crawler technical support
Topic: 450C Seat Cushions
Replies: 8
Views: 465

Re: 450C Seat Cushions

That looks like a generic replacement for maybe a lawnmower. I think that seat would be very uncomfortable. I believe Lavoy offers seat and armrests.
by DrLoch
Mon Oct 01, 2018 6:36 am
Forum: Late model JD crawler technical support
Topic: 350B Hydraulic Pump Shaft
Replies: 3
Views: 343

Re: 350B Hydraulic Pump Shaft

You need to figure out out it twisted the pump shaft off as well or you will be doing that to the replacement as well.
by DrLoch
Thu Sep 13, 2018 6:17 am
Forum: Late model JD crawler technical support
Topic: JD 550c transmission oil loss/transfer
Replies: 1
Views: 235

Re: JD 550c transmission oil loss/transfer

A 450C does move/transfer oil to the finals and back to the main housing so my guess is that a 550C does the same thing. Your manual would explain all that.
by DrLoch
Wed Aug 29, 2018 6:46 am
Forum: Late model JD crawler technical support
Topic: Fuel wont Bleed after Fuel Filter replacement
Replies: 29
Views: 1409

Re: Fuel wont Bleed after Fuel Filter replacement

You say that you are cranking the motor over, doesn't your lift pump have a lever on it so you can hand pump the lift pump. Your next problem is going to be a starter at this rate.
by DrLoch
Tue Aug 28, 2018 6:39 am
Forum: Late model JD crawler technical support
Topic: Fuel wont Bleed after Fuel Filter replacement
Replies: 29
Views: 1409

Re: Fuel wont Bleed after Fuel Filter replacement

Or replace what you have with something like this, https://www.ebay.com/itm/FUEL-FILTER-WATER-SEPARATOR-120AT-FOR-RACOR-R12T-MARINE-SPIN-ON-HOT-SALE/202123954884?epid=24010342748&hash=item2f0f86cac4:g:ZnQAAOSwnCFaF33X I have a Ferguson 23C Diesel Tractor, fuel filters on it leaked constantly. Replac...
by DrLoch
Mon Aug 13, 2018 7:14 am
Forum: Late model JD crawler technical support
Topic: Banjo style fittings
Replies: 11
Views: 717

Re: Banjo style fittings

Generally your suppose to replace the cooper seal when it's been taken apart. I've go an old Ferguson with a 23C Diesel that I have to replace a lot of those cooper washers when I did a rebuild. Found the cooper seals on fleabay.
by DrLoch
Sun Aug 12, 2018 9:44 am
Forum: Late model JD crawler technical support
Topic: Does fuel filter need to be full
Replies: 8
Views: 561

Re: Does fuel filter need to be full

Mine is also always full, Also check all the usual things;

Vent hole in fill cap is open.
by DrLoch
Wed Aug 08, 2018 6:54 am
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 25
Views: 2181

Re: 1977 JD 450c Loader has no power in reverse

You need to redo the clutch valve adjustment procedure correctly. If you seen 180 PSI you should not have to add anymore shims. Do yourself a favor and print off all the pertinent information that you need to do this adjustment procedure correctly, all the information has been provided in this post....
by DrLoch
Mon Aug 06, 2018 7:01 am
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 25
Views: 2181

Re: 1977 JD 450c Loader has no power in reverse

Do not soften the shifts with the pressure adjustment You adjust the speed shift with the needle valve accessed through the side of the transmission, not by lower the clutch pressure. That pressure is needed to keep the clutches clamped up, no different than the automatic transmission in you car. I...
by DrLoch
Fri Aug 03, 2018 6:35 am
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 25
Views: 2181

Re: 1977 JD 450c Loader has no power in reverse

Depending on if its a normal shift or fast shift, and the accumulator dumping, it always should return to high pressure and just vary in time.
Correct. My guess would be that the clutch pack seals are leaking, internally.
by DrLoch
Thu Aug 02, 2018 6:49 am
Forum: Late model JD crawler technical support
Topic: 1977 JD 450c Loader has no power in reverse
Replies: 25
Views: 2181

Re: 1977 JD 450c Loader has no power in reverse

The clutch free play should be ~ 3-3/4" - 4" before the throwout bearing touches the clutch fingers. The penny is used to shim the relief, each one is good for about 10 - 12 lbs. You can go find the correct shims if you want, but most just leave the pennies in there, makes the value of the machine g...
by DrLoch
Sun Jul 22, 2018 7:23 am
Forum: Late model JD crawler technical support
Topic: Low track power
Replies: 17
Views: 1372

Re: Low track power

Hi, No, they aren't the same. The 350 uses a hydraulic reverser without an engine clutch. The 450 uses the High/Low/Reverse transmission behind a standard engine clutch (which is suspect in this case). The machine is a Straight 450 so the steering clutches are dry disc with spring pressure plates. ...