TC-25D Won't Crank - I Need Some Help Please
New Holland Yr 2000 Model TC25D with HST. Have had a couple of intermittent failures to crank (before I last replaced battery) which seemingly healed themselves. Solenoid now silent with no start when key fully turned to the right.
- Slow charged 18 mo. old battery (indicated fully charged)– terminals freshly cleaned and tight – actually load tests at slightly over 10 volts. Removed battery ground wire to frame and sand papered just to ensure solid ground.
- Headlights and instrument panel lights all operative with ignition switch on.
- Key turn seems to properly engage glow plug and result in normal pre-heat functionality.
- Hazard lights work with key removed.
- Main 30a and all fuses in fuse box visibly good.
- Test light illuminates/confirms power from battery to single solenoid main lug – all solenoid/starter connections clean and tight.
- Parking brake light illuminates when brakes set/handle activated.
- PTO and Mid-PTO levers activate PTO ON Indicator when engaged, turn off warning light when set in “OFF” position. Moved through ranges several times before return to “OFF” positions.
- HST range lever moved throughout ranges and reset to either (tried both) of the two (2) NEUTRAL positions.
- No seat safety switch installed on this model.
- Checked good connection on dual wire push in plug PTO safety switch (PTO ON warning light off if both wires connected or if switch is bypassed with solid copper jumper; warning light on if one or both wires disconnected).
- Both PTOs, HST range and parking brake safety switches appear visually clean and seem to operate panel indicator lights as operationally expected.
- HST pedal moved throughout forward and reverse ranges and returned to (Middle) presumed “NEUTRAL” with HST Range lever set to “NEUTRAL” position; All PTO levers in “OFF” position; Parking brake engaged; Clutch pedal fully depressed; ignition key turned fully to right – result is no solenoid noise/no starter turnover.
- No visible rodent chews or damage on any wiring.
- Tapped solenoid body with hammer while attempting to crank, silent – no response.
- Front loader bucket attached with lower blade edge angled down on the ground
Is it likely that these OEM safety switches would operate dash warning lights without adequate current to properly function?
Does anyone know appropriate DMM readings/ranges for each of the safety switches?
Is there a sequential series in which safety switches should be tested using DMM?
If I bypass solenoid and start tractor, will key still shut this diesel engine down?
Is there a testing procedure for this kind of problem in a Shop Repair manual?
Any suggestions on where to get a wiring diagram and/or repair manual for this model? (concerned about downloading some kind of computer virus or getting scammed from websites/sellers I don’t know anything about).
I greatly appreciate any help or advice – I’m obviously not a good mechanic – thanks for your time and expertise.
Very respectfully yours,
TC25Dave - newby