Part of the New Holland Repair Manuals.
Three commercial mowers, one factory book: the New Holland MC22, MC28, MC35 service manual PDF, publication 604.55.081.00, covers all three models across 829 pages, so whichever one you own, the procedures fit. Wiring diagrams for the charging and starting circuits anchor an electrical section that fills nearly a third of the book, while hydraulic schematics trace the lift circuit from the control valve out to the lift cylinders. Overhaul procedures take you through the engine, the transaxle, the two-way clutch in the four wheel drive rear axle, and the PTO with its automatic disengagement system. Check that the thermostat starts opening at 176°F (80°C), then torque the ROPS mounting bolts to 157 ± 9.8 N·m when the frame goes back together. One guessed spec buys you a second teardown. Bookmarked and text-searchable, this file goes wherever the mower sits: bench, barn, or trailer.
What's Inside This New Holland MC22, MC28, MC35 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 6-37 | Introduction, Precautionary Statements, Technical Information, Safety Precautions, Decals (Safety Decals, Instruction Decals), International Symbols |
| Engine and Fuel Systems | 38-193 | Engine Overhaul, Cylinder Head, Fuel System |
| Four Wheel Drive Rear Axle | 194-233 | Description of Operation, Two-Way Clutch |
| Differential, Axles | 234-363 | Transaxle, Differential |
| PTO | 364-391 | Overhaul, Automatic PTO Disengagement System |
| Brakes | 392-407 | Overhaul, Parking Brake Adjustment |
| Hydraulic System | 408-475 | Hydraulic Lift Cylinders, Hydraulic Lift Control Valve |
| Steering | 476-525 | Power Steering Motor, Steering Cylinder |
| Two-Wheel Drive Rear Axle | 526-545 | Description of Operation, 2WD Rear Axle Overhaul |
| Electrical | 546-809 | Charging System, Starting System |
| Platform | 810-829 | Engine Cover, Fenders, Roll Over Protective Structure |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Thermostat Opening Temperature | 80°-84° C (176°-183° F) | p. 146 |
| Injection Pump Timing (MC22, MC28) | 21.0° BTDC | p. 24 |
| Injection Pump Timing (MC35) | 18.0° BTDC | p. 24 |
| Oil filter replacement interval | 100 hours | p. 124 |
| Fuel filter bowl emptying interval | 100 hours | p. 168 |
| Fuel filter replacement interval (first) | 50 hours | p. 168 |
| Fusible Link Rating | 20 Amps at 20°C (68°F) | p. 554 |
| System Relief Valve Setting | 1471 PSI | p. 25 |
| MC22 | ||
| Thermostat Fully Open Temperature | 95° C (203° F) | p. 146 |
| MC28, MC35 | ||
| Thermostat Fully Open Temperature | 93° C (199° F) | p. 146 |
| MC 28 | ||
| Cooling System Capacity | 5.2 L (5.4 qt) | p. 23 |
New Holland MC22, MC28, MC35 Common Problems This Manual Covers
New Holland MC35 diesel hard to start after sitting, loses prime, stalls at idle
Replace the fuel filter every 100 hours per page 124. Bleed air at the filter and injection pump until fuel runs solid with no bubbles. If it still starts and stalls, test the electric fuel pump: it should deliver 1.5 liters (0.4 gal) in the test on page 615.
Manual Section: Engine and Fuel Systems p. 38Engine overheats or temperature warning climbs during heavy mowing in tall grass
Clean packed grass chaff from the radiator screen and fins first; blocked airflow is behind most overheating. Then test the thermostat in heated water: it should start opening at 80 to 84 degrees C (176 to 183 F), the spec on page 146. Replace it if it hangs closed, then run the engine overheating chart.
Manual Section: Engine TroubleshootingLow power and black exhaust smoke under load, engine bogs in thick grass
Replace a restricted air filter element before touching the fuel system; most smoke and power complaints start there. Set low idle to 1000 rpm, the service adjustment spec on page 148, and check the governor linkage for binding. If smoke hangs on under load, work through the full power and exhaust smoke checks starting.
Manual Section: Engine TroubleshootingLift arms drop in neutral, deck rises slowly or will not lift at all
Check the hydraulic reservoir first; the system holds 22.0 liters (page 23), and a low level points to a leak or a starved pump. Change the hydraulic filter, then test lift pressure against the 1471 PSI relief valve setting on page 25. Trace the circuit on the hydraulic schematic, , if pressure is good but the deck still drifts.
Manual Section: Hydraulic System p. 408Starter clicks but engine will not crank, battery goes dead sitting overnight
Load-test the battery and clean both cable ends before blaming the starter. Inspect the fusible link, rated 20 amps at 20 degrees C (page 554); a burned link kills the whole crank circuit. With the engine running, confirm the alternator makes its rated 40 amp output (page 24), then chase any drain with the wiring diagram.
Manual Section: Electrical p. 546Frequently Asked Questions
What is the replacement interval for the engine oil filter on a New Holland MC22, MC28, MC35 Commercial Mower?
The engine oil filter must be replaced every 100 hours of operation. When installing a new filter, coat its face with clean oil and hand tighten only. p. 124
What is the torque specification for the cylinder head bolts on the MC22 tractor?
The cylinder head bolts for the MC22 tractor should be torqued to 49 - 52 N⋅m (36 - 38 ft.-lbs.). p. 50
What is the correct valve lash (cold) for the MC22, MC28, and MC35 engines?
The valve lash (cold) for all three engine models (MC22, MC28, and MC35) is 0.2 mm (0.008 in.) for both intake and exhaust valves. p. 47
What is the cooling system capacity for the MC35 tractor?
The cooling system capacity for the MC35 tractor is 5.6 U.S. qt. (5.3 liters). p. 23
What is the injection nozzle pressure setting for the MC28 and MC35 tractors?
The injector pressure setting for the MC28 and MC35 tractors is 152 bar (2200 psi). p. 48
What exactly do I receive with this New Holland MC22 Service Manual?
You download the Service Manual yourself: 829 pages, searchable PDF, available immediately. Keep a copy on every device you use.
Are there any print restrictions on this New Holland MC22 manual?
Yes. The PDF is DRM-free, so printing works from any reader and any printer.
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