Description

Hitachi Sumitomo ZAXIS 130W Workshop Manual

I have been torquing head bolts since before some of you were born, and I have seen more aftermarket manuals than I care to admit. Every time a DIYer or a green tech brings in a machine with a stripped thread or a leaky fitting, nine times out of ten it is because they followed some generic third-party book that guessed at the specs. This Hitachi Sumitomo ZAXIS 130W Workshop Manual is the real thing – 719 pages of factory documentation, not a reprint. It is what you need to keep a wheeled excavator running without burning billable hours on guesswork.

Page 3 of this manual shows the safety alert symbol. Pay attention to it.

Section 1 General: Torque Specs and Bleeding Air

You will find the tightening torque specification and the torque chart in Group 2 of Section 1. That covers everything from standard bolt torque to piping joint values and periodic replacement parts. If you skip that chart and use a generic bolt torque table, you will end up with a leaky hydraulic fitting or a cracked casting. I have seen it happen. The same section includes bleeding air from the hydraulic oil tank – a procedure most manuals leave out because it requires specific steps to avoid cavitation. This manual does not leave it out.

7 Systems in the Upperstructure Section

Section 2 (Upperstructure) breaks down into 16 groups. You get the cab removal dimensions, counterweight install, main frame, pump device (including disassembly of the main pump, regulators, PTO gear box, pilot pump, and steering pump), control valve (4-spool and 5-spool, plus auxiliary valve), swing device, pilot valves, pilot shut-off, signal control, travel shockless, solenoid valves, pilot relief, steering valve, brake valve, accumulator charging valve, and transmission control valve. That is the entire upperstructure laid out in factory order.

Hydraulic Pump: Disassembly Sequence from the Manual

Working on the main pump? The manual takes you through removal and installation first, then disassembly of the main pump, followed by assembly, maintenance standards, and disassembly/assembly of the regulator for both pump sides. It even covers the PTO gear box and the pilot pump. Each step specifies tool requirements and torque values. No guesswork.

Why OEM Documentation Beats Aftermarket Every Time

This is an original Hitachi Sumitomo publication, not a scanned and OCR’d copy from a third party. The torque values, the hydraulic schematics, the bleed procedures – they all come from the factory that built the machine. Aftermarket manuals often get the torque wrong because they extrapolate from generic data. On a machine like the ZAXIS 130W, that kind of shortcut costs money. I have seen a $500 fitting crack because someone used a table from a car manual.

Get the Right Torque from the Chart

Group 2 in Section 1 includes a dedicated torque chart. Use it. If you need the charge pressure for the accumulator charging valve, that is in Group 15. The point is, every spec is somewhere in these 719 pages. You just need to read it.

For other Hitachi Sumitomo models, see the related manuals below. They all follow the same factory-spec approach.

• Hitachi Sumitomo SH330 SH330LC 350HD-3B 2006 Workshop Manual – Factory Specs
• Hitachi Sumitomo SCX1500-2, SCX1200-2 Workshop Manual
• Hitachi Sumitomo SCX1500-2, SCX1200-2 Workshop Manual – 506 Pages
• Manual Transmission basic operation – but trust the factory for your ZAXIS.
• Manual Transmission general theory is fine, but not for this machine.

FAQ

Is this manual only for the engine?

No, it covers the entire machine including hydraulics, undercarriage, and electrical.

What torque specifications are included?

Section 1 Group 2 contains the tightening torque specification and a full torque chart for standard bolts, piping joints, and periodic replacement parts. These are the factory values from Hitachi Sumitomo, not aftermarket approximations. Using the correct torque prevents stripped threads, leaks, and component failure. The chart is referenced from page 2 onward and applies to all major assemblies in the manual – main pump, swing motor, travel motor, control valves, and more. If you follow the chart, you will not have to redo work.

If you are tearing down a ZAXIS 130W, stop using photocopies and get the real thing. Access the Factory Manual from AutoRepairManuals and keep it on your tablet or printed out. Your torque wrench will thank you.