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Part of the New Holland Repair Manuals.
Looking for the New Holland RG140.B, RG170.B, RG200.B service manual PDF? This 803-page factory manual (OEM #75314236) walks you through every system on all three motor grader variants, from the transmission and tandem drive axles to the articulation joint and front blade. You get full electrical wiring diagrams (pp. 80-97) and hydraulic system diagrams, and a complete transmission section with pressure checks and troubleshooting charts. Inside: standard torque tables, fluid and lubricant capacities, and step-by-step removal and installation procedures for the engine, turbocharger, limited slip rear axles, brakes, and air conditioning. Torque the hub cap capscrews to 40-54 Nm, and confirm transmission filter bypass at 60 psi before you chase a shifting complaint. Your grader is down and the clock is running. Get the factory numbers, not forum guesses. Bookmarked by system tab; type a keyword, jump to the spec, and get back on the blade.
What's Inside This New Holland RG140.B, RG170.B, RG200.B Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 6-39 | Standard Torque Specifications, Fluids and Lubricants, Metric Conversion Chart, Tools |
| Engines | 40-61 | Engine Removal, Radiator Removal, Charge Air Cooler, Turbocharger Outlet Piping, Air Inlet Pipe |
| Fuel System | 62-63 | Diesel Fuel System, Fuel Storage, Fuel Filters, Separator Filter, Fuel Pump, Injectors |
| Electrical | 64-129 | Removal and Installation of Starter and Alternator, Electrical Diagram, Batteries, Alternator - 45 Ampere |
| Steering | 130-169 | Front Wheel, Axle & Wheel Lean, Steering Control Valve, Steering Priority Valve |
| Transmission, Specifications & Troubleshooting | 170-229 | Transmission Specifications, Pressure Checks, Troubleshooting Charts |
| Transmission (845 / 865 and 885 Families) | 230-505 | Component Identification, Transmission Mounting and Sensor, Charge Pump, Direct Drive Input Assembly, Control Valve, Main Case Front and Rear Housings, Gear Ratio Group, Brake Group, Replace Connectors, Printed Twice, Once per Transmission Family (845/865 From P230, 885 From P376) |
| Limited Slip Rear Axle | 506-581 | Removal and Installation, Disassembly and Assembly |
| Tandem Drive & Limited Slip Rear Axle | 582-618 | Tandem Drive, Limited Slip Rear Axle, Tandem Housing Service |
| Brakes | 619-645 | Hydraulic Brakes Troubleshooting, Brake Pedal Valve and System |
| Hydraulics | 646-709 | Removal and Installation of Hydraulic Components |
| Mounted Equipment | 710-803 | Air Conditioning Troubleshooting, Air Conditioner System Operating Instructions, Removal and Installation of Air Conditioning Components, Rear Ripper, Frame, Articulation Joint |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hub cap capscrews | 40 - 54 Nm (30 - 40 ft lbs) | p. 146 |
| Filter bypass pressure | 60 psi | p. 180 |
| Filter pressure switch actuation | 50 psi | p. 180 |
| Nominal voltage | 24V | p. 181 |
| Allowable voltage | 20-28V | p. 181 |
| Cab mounting bolt torque | 390 to 485 ft.lbs | p. 796 |
| Alternator Output | 28 volts at 45 amperes | p. 114 |
| Air conditioning system refrigerant capacity | 1.6 kg | p. 740 |
New Holland RG140.B, RG170.B, RG200.B Common Problems This Manual Covers
New Holland RG200.B drive wheels do not disengage, machine stays locked in gear
Check for 24 volts at the wheel drive disengagement solenoid connector with the switch actuated; allowable range is 20 to 28 volts per page 181. If voltage is missing, trace the control circuit wiring and clean every connector. If voltage is good but the solenoid stays dead, replace it and retest before returning the machine to grade.
Manual Section: Power Train p. 181Transmission shifts erratically after startup and the filter restriction warning light stays on
Drain the transmission fluid and replace the filter at the initial 100 hour service; the maintenance chart on page 23 lists all intervals. The pressure switch actuates at 50 psi and the filter bypass opens at 60 psi (page 180), so a restriction warning means the element is loaded. Cut the old filter open and check for metal debris.
Manual Section: Power Train p. 180Engine cranks slowly or will not turn over, batteries go dead overnight
Test alternator output first: spec is 28 volts at 45 amperes on page 114. Load test both batteries and clean the ground connections at the frame. Trace the charging circuit with the wiring diagram if output is low, and replace the alternator only after it fails a bench test.
Manual Section: Electrical p. 114Air conditioner blows warm or cycles between cold and warm inside the cab
Check refrigerant charge before condemning the compressor; system capacity is 1.6 kg on page 740. Blow out the condenser fins, straighten any bent ones, and verify the compressor clutch engages. Recover, evacuate, and recharge with exactly 1.6 kg of refrigerant, then confirm steady vent temperature at high idle.
Manual Section: Mounted Equipment p. 740All hydraulic functions feel weak and erratic, blade and circle respond slowly under load
Replace the hydraulic filter element and inspect the old one for debris. Clean and tighten every suction line connection, since air leaks cause erratic response. Test control solenoid coils: resistance spec is 53 ohms plus or minus 3 percent, current draw .6 amp nominal and .7 amp maximum on page 181. Trace circuits with the hydraulic schematic.
Manual Section: Hydraulics p. 646Frequently Asked Questions
What are the replacement specifications for the transmission filter on the RG140.B grader?
For the RG140.B grader, the transmission filter should be changed after the first 100 hours of operation, and subsequently every 500 hours or every 3 months. The specification for the transmission oil and filter is HY-TRAN ULTRA MAT 3505 (MS 1209). p. 23
What is the transmission fluid capacity for the RG200.B grader?
The transmission refill capacity for the RG200.B grader is 28.5 liters (7.5 US Gal) with a filter change, and 22.0 liters (5.8 US Gal) without a filter change. The recommended specification is HY-TRAN ULTRA MAT 3505 (MS 1209). p. 20
How often should the engine oil and oil filter be changed on the RG140.B grader?
The engine oil and oil filter on the RG140.B grader should be changed every 250 hours or monthly, whichever comes first. The recommended engine oil is No. 1 Engine Oil SAE15W-40 API CH4, meeting MAT 3507 (MS 1121) specifications. p. 23
Will this New Holland RG140.B Service Manual download right away?
You get a 803-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Can I print a copy of this New Holland RG140.B Service Manual for the shop?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
Does this New Holland RG140.B manual include wiring diagrams?
Yes, full electrical schematics are included with wire colors, connector locations, and circuit descriptions. Page 80 carries one of them.
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