Description

Hitachi Sumitomo ZAXIS 110, ZAXIS 110M, ZAXIS 110-E Parts Catalog

You’ve got a ZAXIS 110 on the lift — or maybe a 110M or 110-E — and you’re staring at a hydraulic leak, a blown seal, or a cracked bracket. The aftermarket parts book you pulled off some forum has the wrong part number, and the dealer wants the serial number plus a blood sample before they’ll cross-reference it. That’s where this Hitachi Sumitomo ZAXIS 110, ZAXIS 110M, ZAXIS 110-E Parts Catalog comes in. It’s the exact same 228-page document the Hitachi Sumitomo factory sends to their dealers. No reprint, no third-party redraw — just the original PDF that shows every nut, O-ring, and valve in the hydraulic system. I’ve been wrenching on excavators long enough to tell you: a wrong part costs you a day and twice the money. This manual ends that cycle.

What’s Inside: PUMP, MOTOR, VALVE, and CYLINDER Sections

Flip past the cover and you land on the PUMP section — PUMP DEVICE, PUMP;UNIT, REGULATOR, PUMP;GEAR. Each one gets its own exploded diagram with a parts list that includes the Hitachi part number, description, quantity per assembly, and service code flags (like D for “replace as assembly” or K for kit availability). The MOTOR;OIL section covers both swing and travel motors, and it lists the VALVE;BRAKE subassembly for each — critical when the swing brake won’t hold. You also get the TRAVEL DEVICE (1/2 and 2/2) and T.MISSION breakdown. All of these are organized by the same part-number logic the factory uses. Need the brake valve for the swing motor? That’s under MOTOR;OIL (SWING) → VALVE;BRAKE. Page 1 shows the serial number range (010001~) so you can confirm it fits your machine.

VALVE;CONTROL: 8 Breakdowns for Each Control Valve

The VALVE section goes deep. You’ll see VALVE;CONTROL from (1/8) through (8/8), then a second set of the same — one for the main control valve, one for the blade control valve. That’s 16 pages of control valve parts alone. Each sheet labels every spool, spring, plug, and seal. If you’re rebuilding a control valve because the machine drifts or won’t lift, this is where you find the exact plug part number instead of guessing a generic O-ring. Also included: VALVE;PILOT (front & swing, travel, blade), VALVE;SOLENOID, VALVE;RELIEF, VALVE;SHUTTLE (five sub-sections repeated for both main and blade circuits), VALVE;LOCK, VALVE;SLOW-RETURN, and VALVE;SELECTOR. That’s the kind of detail that saves you from ordering a $300 solenoid that turns out to be the wrong voltage.

CYLINDER Assemblies: Boom, Arm, Bucket, Blade

The CYLINDER pages cover every hydraulic cylinder on the machine. You get CYL.;BOOM (R) and (L), with and without holding valves — plus the VALVE;HOLDING sub-sections for boom right, boom left, and arm. The ARM cylinder is listed separately for mono-boom and offset-boom configurations. Then CYL.;BUCKET, CYL.;OFFSET, and CYL.;BLADE (R) and (L). Each cylinder breakdown includes rod seals, piston seals, wiper rings, and the gland nut part numbers. If you’ve ever had a cylinder that won’t hold position and you’re tearing down the packing, you know how valuable it is to have the factory part numbers for the seal kit. This manual gives you those numbers without having to call the dealer and wait on hold.

PARTS INDEX: Find It by Number in Seconds

At the back of the 228-page document there’s a PARTS INDEX — a sorted list of every part number in the catalog with the page reference where it appears. If you have a part in your hand with a number stamped on it but don’t know where it goes, look it up in the index. That’s a time-saver when you’re cleaning up a pile of old parts from a used machine you just bought. The index also flags new parts with an asterisk and notes if a part is optional (OP) or oversized (OS). No guessing, no cross-referencing aftermarket databases that might be wrong.

3 Reasons to Choose the Factory OEM Parts Catalog

First, the part numbers in this catalog are the same ones Hitachi Sumitomo uses in their global system. You call the dealer with part number A810165 and they don’t have to ask what machine it’s for — they can pull the O-ring immediately. Second, the service codes — W, D, K, R, S, OP, OS — tell you exactly how that part is handled. A D code means you cannot buy that part separately; you order the parent assembly. An R code means the quantity varies per machine (like shims). Third, the diagrams are drawn by the people who designed the machine, so the orientation and bolt callouts match what you see under the hood. Aftermarket catalogs often flip or simplify the drawing, leading to confusion. I’ve seen techs waste an hour because a third-party parts book labeled a “shuttle valve” when the factory calls it a “shuttle valve (1/5)” — and there are five variants. Get the original.

Does This Catalog Include Torque Specifications?

No. This is a Parts Catalog, not a service manual. It lists components and their part numbers — it does not contain torque values, fluid capacities, or repair procedures. If you need those, pair this catalog with the factory service manual for your ZAXIS model. I’d recommend the Hitachi Sumitomo ZAXIS AC Troubleshooting Manual 138 Pages”>Hitachi Sumitomo ZAXIS AC Troubleshooting Manual 138 Pages for electrical issues, or the HITACHI ZAXIS 110 110M 110-E Parts Catalog”>HITACHI ZAXIS 110 110M 110-E Parts Catalog itself (you’re already on it). And for a deeper parts breakdown on the same chassis, check the Hitachi Sumitomo ZAXIS 110 Parts Catalog – 638 Pages | AutoRepairManuals”>Hitachi Sumitomo ZAXIS 110 Parts Catalog – 638 Pages | AutoRepairManuals that includes more optional attachments.

FAQ

Does this manual include wiring diagrams?

No. This is a parts catalog. Wiring diagrams belong in the service manual.

How do I use the parts index to find a specific part?

Turn to the PARTS INDEX section at the end of the 228-page PDF. Every part number in this catalog is listed there alphabetically (or by number sequence) with the page number where that part appears in an exploded view. Take your existing part number — say A810165 — find it in the index, then flip to the indicated page. You’ll see the exact diagram and position callout. The index also notes if the part is a new addition (asterisk) or optional. This method is faster than scrolling through 200+ pages, and it eliminates the risk of misidentifying a component because the diagram matches the factory layout.

You can Access the Factory Manual now. That PDF is the same 228-page file the Hitachi Sumitomo parts counter uses. I’ve seen too many techs waste a Saturday because they trusted an aftermarket parts list that had a wrong seal size. Don’t be that guy. Get the OEM data, look up your brake valve the right way, and get the machine back in the dirt.

For more background on how the automotive and heavy-equipment industry handles parts documentation, see Automotive Industry Overview and the related Automotive Industry Overview page on parts standardization.