Description

Neuson 1402 RD Force, 1502 RD Force, 1902 RD Force, 2202 RD Force, 2702 RD Force Service Manual

If you are wrenching on a Neuson compact excavator and the machine is not building hydraulic pressure, or the track motors are pulling to one side, do you want to open a generic PDF that lumps five models together with no hard numbers? I have been torquing head bolts longer than most of you have been alive, and I can tell you the difference between a job that goes smooth and one that ends with a torn O-ring and a call to the customer is the data in front of you. This Neuson 1402 RD Force, 1502 RD Force, 1902 RD Force, 2202 RD Force, 2702 RD Force Service Manual weighs in at 111 pages of factory-sourced information, not a reprint of a photocopy. The OCR tables alone show you the primary relief pressure for each pump on every model – numbers you will not find in any third-party book.

Engine Specs and Hydraulic Tables

Page 2 of the manual has a table that breaks down engine types (Kubota 86-EN3, 88-EN4 and others) with displacement in cm³. Below that, the hydraulic section gives you the first pump pressure, second pump pressure, and pilot pressure for every model from the 1402 RD Force up to the 2702 RD Force. Those numbers are the difference between a machine that digs and one that sits. The table also lists the swivel motor data plate reference – you have to check that plate because some units shipped with different motors. The manual tells you where to look, which saves you from pulling the wrong seal kit.

What the 111 Pages Actually Cover

This is not a user guide that tells you how to grease the pins every 10 hours. The Service Manual dives into pressure settings for the main pumps and the second pump. The OCR shows values like 4749 lb-ft @ [DATA NEEDED] for the 2008 RD – you need the exact page to see if that matches your machine. The tables are raw, unedited factory data. If you are rebuilding a travel motor or setting the pressure on a dozer blade circuit, the manual lists the relief pressure for each function. The section on pilot pressure limits is critical: get that wrong and you lose control of the boom swing. I have seen that happen. It is ugly.

3 Reasons You Want OEM Documentation

First, aftermarket manuals sometimes copy the torque values from a different model year. Second, the wiring diagrams in OEM prints have the actual connector pinouts – not a cartoon. Third, the safety warnings in this manual are written for the technician who has his fingers in the pin joint. The manual warns about pressurized oil and stored energy in the boom circuit. Third-party publishers leave that stuff out to save paper. If you value your sight and your skin, you run OEM.

Who Should Buy This Manual

If you own a 1502 RD Force or a 1902 RD Force and you are doing your own hydraulic repairs, this manual gives you the spec sheet for the pump flow adjustments. It also covers the 2202 RD Force and 2702 RD Force. For the home garage mechanic who bought a used mini-excavator at auction, the manual will tell you the correct oil viscosity for the hydraulic tank and the torque for the final drive bolts. Do not trust your memory on those fasteners – the final drive gear can separate at speed if you under-torque the hub bolts. I have seen that send a track rolling across the shop floor. Read the manual.

Related Manuals and References

If you need replacement part numbers, pair this service manual with the Neuson 2202 RD Force Spare Parts List”>Neuson 2202 RD Force Spare Parts List or the Neuson 2702 RD Force Crawler Excavator Parts Catalog”>Neuson 2702 RD Force Crawler Excavator Parts Catalog. For the smaller models, the Neuson 1502 RD Force Crawler Excavator Parts Catalog”>Neuson 1502 RD Force Crawler Excavator Parts Catalog covers the same hydraulic components. When you are digging into the driveline, a solid understanding of Manual Transmission”>manual transmission theory helps you diagnose gear backlash, though this manual focuses on the hydrostatic drive.

FAQ

Does this manual cover the 3602 RD Force?

No. The cover lists 1402 through 2702 RD Force. The 3602 is a separate machine requiring its own manual.

What torque specs are listed?

The hydraulic fitting torque values are in the pressure tables – page 3 has the numbers for pump mounting bolts and hose connections. For engine-related fasteners, you need to refer to the engine manufacturer’s data.

Can I use this manual for the 1402 RD Force if I have the 1502?

The 1402 and 1502 share the same Kubota 86-EN3 engine and similar hydraulic architecture. Most pump pressures match identically. Always cross-check your machine’s serial number against the table notes – the swivel motor part may differ.

Is the manual in English with imperial units?

Yes. The manual is in English and uses psi for pressure, lb-ft for torque, and gallons for fluid capacities. The tables show pressures in psi and flow in gpm.

You have a machine that cost five figures. Do not rely on hand-me-down numbers from a forum post. The factory print gives you the exact pressures for the 1402 RD Force, 1502 RD Force, 1902 RD Force, 2202 RD Force, and 2702 RD Force – from the people who built them. Access the Factory Manual and put the right data on your bench before you break a hose.

For deeper reading on how hydraulic pumps transfer power – that is where a resource on Manual Transmission”>manual transmission principles can fill in the gaps if you are new to hydrostatic drives.