CIHTECH

Adjust them by firing order, then you don't need to worry about where TDC is. Firing Order 1-5-3-6-2-4 Turn engine in direction of rotation, watch valves rock (exhaust close an intake opening) now adjust #1 Watch #2 rock, adjust 5 Watch #4 rock, adjust 3 Watch #1 rock , adjust 6 Watch #5 rock, adjust 2 Watch #3 rock, adjust 4 Roll thru it the second time to check yourself if you want.

I would second the o rings

I needed a set for a little 2022 NH tractor a guy ran in creek. Not available thru CNH, had some custom built and ordered thru Summit IIRC....

Added heavy exhaust valve springs to an 8.3 Cummins in preparation for an exhaust brake. Done the job with overhead spring compressor by firing order. Due to whatever interruption I forgot to turn engine for the next cylinder. Dropped a valve down in the cylinder, was able to "find" end of valve with a magnet and pull back up thru guide. Couldn't pull it all the way up thru without overcoming the magnet, so next try once I got it started was able to "push" it up thru with piston.

In engine bay is the starter relay, pin 85 is a switched ground that comes thru shuttle lever (has to be in "N") pin 86 is 12v from start terminal of ignition switch, pin 30 is constant power from main power stud in firewall, and pin 87 feeds starter exciter terminal. If starter doesn't crank by jumping from B+ post of starter to exciter terminal, you have a voltage drop or a bad starter. Engine will only crank unless ignition switch is in run position to power fuel solenoid. The ground cables in battery box wrap around to a ground stud that goes thru battery box, then a ground cable goes from there to frame. Have had a fair amount of problems with this ground connection over the years. IF JUMPING STARTER MAKE SURE PARK IS ENGAGED AND TRACTOR IS OUT OF GEAR

You will need several gauges in system to confirm, but yes likely a pump problem. Gauge in top of filter housing for charge pressure, should be 25-35 psi at 900 rpms and 50-70 at 1900 rpms, all with oil being 120 degrees. A second gauge on pump outlet will allow you to read low-standby, steering and hitch / remote pressures. When failure occurs does the charge psi drop? If pressure drops you are seeing "lift-off" The rotating group spring loads against the stationary valve plate, once any scoring takes place between the rotating group and valve plate, hyd pressure overrides the spring pressure, lifting rotating group from valve plate, and system pressure will drop to very low numbers. When this happens the charge pressure will also drop as there is nothing "load" the charge circuit.

Good news....

Chapter 8, Test 12, PTO supply pressure test States 196-240 with 540 engaged, and 280-300 with 1000 engaged.

Hope & pray your home away from home works out well. Pray even more that everything goes well.

Wasn't aware that NA tractors had anymore than a remote hitch control on rear fender. In your pic it's actually arrows pointing up & down. Code 34 is PTO solenoid coil shorted, test between terminals of solenoid, should read 10 ohm's Do NOT reconfigure with any stored error codes. Fix any problems setting codes before an attempt to configure. Here are notes regarding retrieving and deleting codes ALL MX MXC TRACTORS TO READ ERROR CODES FOLLOW STEPS AS LISTED #1 STANDING FREE OF SEAT TURN PTO LEVER OR SWITCH “ON” #2 TURN IGNITION KEY ON (CAN NOW SIT IN SEAT )**** #3 READ CODES FROM PTO LAMP, CODE WILL FLASH EXAMPLE (2 FLASHES 1 SECOND PAUSE, 3 FLASHES, 2 SECOND PAUSE WILL BE CODE 23 #4 TURN PTO OFF THEN BACK ON FOR NEXT ERROR CODE (REPEAT TO READ AND RECORD ALL STORED CODES) #5 ERASE CODES BY CYCLING PTO LEVER 3 TIMES WITHIN 5 SECONDS ENDING IN “ON” POSITION (LAMP WILL COME ON FOR 2 SECONDS THEN GO OUT) CODES ARE NOW ERASED. Here are a couple configuration notes.... FOLLOW THESE STEPS TO CONFIGURE PTO** #1 WITH KEY AND PTO OFF INSTALL CONFIGURATION JUMPER*** #2 START ENGINE AND SET RPM’S 1000 +/- 50 #3 MOVE PTO SWITCH OR LEVER TO RUN POSTION; PTO LAMP WILL STOP FLASHING AND STAY ON, CONTROLLER WILL BEGIN ENGAGEMENT AND CALCULATE ENGINE VERSUS PTO SPEED, WHEN COMPLETE PTO WILL STOP AND LAMP WILL FLASH 4 RAPID FLASHES AND A SHORT PAUSE #4 TURN PTO OFF THEN ENGINE, REMOVE JUMPER WIRE ** IF TRACTOR HAS AUTO PTO OR REMOTE SEE SECTION 10006 OF SERVICE MANUAL ***JUMPER POINTS ARE LOCATED TO RIGHT OF TOP FUSE PANEL IN THE 2ND AND 4TH HOLES

Assuming North American version, the pins in shifting collar have left the chat. Repair will require pulling the PTO unit / rear housing off the tractor. Once removed it's a pretty straight forward repair. Four bolts hold the back plate in place, then output group sets out of housing. Codes need to be erased but likely most of them have been there a long time. Your reply caught me typing a reply. I fear that you just put a band aid on the problem.

Thanks guys, joined the ole man club, hit 50 today. Happy Birthday to others celebrating today as well.

With pump mounted in vise we use a dial indictor to measure shaft movement. If we measure over .010 we then pull the gear and check seal. Most times lip of seal is brittle and doesn't react to shaft movement leaving an air gap when pump shaft is under torsional load. Also spin with drill and check vacuum on suction port. I like to pull the pump apart once condemned, helps us understand why it failed. A lot of the pressure plates indicate excessive heat which in turn hardens the pressure plate seals. When installing a new pump we always fill with STP or such like on the bench and watch pump pull it thru. Then rotate pump several times. Once in tractor and upon start up pump builds pressure almost immediately.

Order the switch from your CaseIH dealer, we use them all the time with "0" problems. You have the right part number.. If we want a dealer in our town or at the very least close by, we better support them or next time we turn around their gone...............sorry but a HUGE pet peeve of mine. Support your local guys. Keeps the volume up and the price down, makes me upset when customers complain about prices and they paid half price for a part, then spent triple to sort out why it don't work. Again sorry............. The switch powers a relay in side fuse panel, so you might need to check there as well. The connections need to be tight and fit good, loose connections create heat and poor connection.

Yes, all ya need is a push button momentary switch, length of wire and alligator clips.

We test run engines quite often on a pallet or engine stand. Most times we have all electrical stripped off engine. Connect your battery to starter + post and - to starter mounting bolt or engine block. To excite starter we use a jump starter switch connected to + post and exciter terminal on starter. If engine has a fuel solenoid we simply use a jumper wire from + to solenoid. If engine has an external mounted fuel solenoid, most times we just hold it in the "run" position with a bungee cord. Remember firing up an 8.3 Cummins hanging from chain hoist, quite interesting when ya cracked the throttle.

Make sure your throttle linkage is allowing throttle arm on injection pump to return to low idle. I would suggest unhooking throttle linkage from the injection pump and manually operating throttle arm thru full sweep to confirm both low and high speeds. If they are good, then adjust the tractors linkage to match the injection pump. Not uncommon at all to find the bumper spring capsule ran in too far in an attempt to eliminate a light load surge. Can dive deeper into that if needed once other adjustments are confirmed.

Those transmissions do have a whine to them that seems worse from one tractor to another. We have attempted several times to correct it with little to no success. Does noise change with MFD engagement? What is the serial number of your tractor?

Rebuilt a carburetor for a 766 NF last week, and shipped out some parts for an 886 with a MFD axle.

We have had them reproduced, plenty in-stock. PM me for further info

Thoughts and prayers for all involved. Stay strong and trust God!

It would be interesting to see what a charge pressure gauge in top of filter base would read. Make sure when you change filter to check the by-pass valve that like to fall apart. By pass valve is held up in filter base by a snap ring. Its really quick and easy to drop it out and check it (at least once) so you are familiar with it and how it works. Really tough to diagnose, without back history and being right there with tractor. The spring center of torque limiter plate in flywheel can be going to seed, lower pto/hyd pump drive gear/bearing failure.

Remove cab floor mat and floor plate to access the shift valve. Get a pressure gauge in test port (inline with solenoid) test run and see what your pressure is. The 2 speed clutch is spring applied for low side and hydraulically applied for hi side. Likely a broken piston or the tie bolts that override spring pressure when hi side is engaged. When the hi side is selected the tie bolts that go thru center of clutch cup and connect the 2 clutch pistons together. As the hi side applies it pulls low side piston and releases spring pressure there by releasing the lo clutch. The tie bolt nuts like to come off, bolts or piston break.

We see about (1) full rebuild a month on avg. In our tractor shop we reseal the heads and transfer pumps quite often without removing the complete pump from engine.

The filters are likely bronze stone filters for the low pressure case return. During normal operation they would catch any debris shed by drive motor components. In event of a major drive motor failure they will protect from getting major debris back into the common reservoir.