Description

Ihimer 28J Parts Catalog – Factory Parts Breakdown for Your Mini Excavator

If you’re wrenching on an Ihimer 28J, you already know that guessing part numbers costs you money. Aftermarket catalogs mix up revisions, leave out sub-assemblies, and make you buy the wrong seal kit. This is the factory Parts Catalog – not a reprint, not a scan of someone’s photocopy. Original OEM documentation from Ishikawajima Construction Machinery Co., Ltd. 279 pages of exploded diagrams and parts lists. You want the correct part for the crawler shoe adjuster? Page 6 tells you exactly which bolt and shim you need. No guesswork.

What This Parts Catalog Covers – 12 Major Assemblies

The Table of Contents splits the machine into 12 sections, plus options. From the Lower Machine (sections 1-1 through 1-7) to the Power Unit (7-1 through 7-4A) and every hydraulic component in between. You get the Crawler Shoe Assembly (1-2), Swing Drive Device (3-1), Hydraulic Piping (4-1 through 4-5), and the Hydraulic Instrument group (5-1 through 5-15) covering traction motors, control valves, cylinders, and pumps. Each section is broken down by sheet number so you can hand a printout to the parts counter and get the exact OEM part.

Why a Factory Parts Catalog Beats Aftermarket Every Time

After a decade in the shop, I’ve seen too many jobs held up because a third-party catalog used a “universal” part number that didn’t fit the 28J’s revision. This Ihimer 28J Parts Catalog lists the serial number break (AK004001~) and includes sub-variants like the short lever controls, A・F change piping, and Italian/French name plates. If you need the Remote Control Valve Assembly for the A・B change variant, it’s on sheet 5-5A. That level of detail is what keeps a machine from sitting dead on the lot. Waste no time cross-referencing guesses.

5 Sections You’ll Use Most Often

• Lower Machine (1-1 to 1-7): Track frames, crawler shoes, front idler, lower/upper rollers, and traction piping. Page 2 shows the complete lower machine assembly – every bolt and bushing.
• Swing Drive Device (3-1): Page 22. Gearbox, motor mount, seals. If your swing is dragging, you need the right bearing part number.
• Hydraulic Instrument (5-1 to 5-15): Traction motor, swing motor, rotary joint, control valves, cylinders. The Oil Pump Assembly is on page 68 – figure out which pump drive gear you need without pulling the engine.
• Power Unit (7-1 to 7-4A): Engine accessories, air cleaner, muffler, fuel tank with water sedimenter option. Page 100 for the engine group.
• Cab & Related Parts (8-1 to 8-6): Canopy, operator seat, name plates, counterweight. The canopy variants for TOPS are listed separately – no guesswork on which bracket fits.

Who Needs This Catalog on Their Bench

Home garage guys, small equipment rental yards, and fleet mechanics. If you maintain one 28J or a dozen, you need the exact part numbers for ordering. The Parts Index at the back cross-references every part number to the sheet where it appears. No flipping through pages hoping to find a hose – the index is alphabetical by part number. You’ll save phone calls to the dealer asking “which variant does my serial number take?” because the catalog already accounts for serial breaks.

Source Authenticity – OEM vs. Aftermarket

This is a direct scan of the factory publication, PUB.No.5, from Ishikawajima Construction Machinery. Not a third-party compilation. The Automotive Industry Overview tells you that OEM documentation is the only reliable source for parts identification – same rule applies to construction equipment. Aftermarket catalogs often omit the “For Short Lever, CE” variant (4-4C) or the “A・B・G Change” multiple valve. This catalog has them all. If you’ve been burned by a “universal” parts list, this is your fix.

FAQ – Common Questions About the Ihimer 28J Parts Catalog

Does this catalog include torque specifications for assembly?

No. This is a parts catalog, not a service manual. Torque values are not listed. You need the factory service manual for tightening specs.

What serial numbers does this manual cover?

From serial number AK004001 and up. Check your machine’s serial plate. If your unit is earlier than AK004001, some parts may differ – the catalog only guarantees accuracy for that serial range.

Can I use this to rebuild the hydraulic pump?

You can identify every seal, bearing, and plate inside the Oil Pump Assembly (5-8, page 68) and order the correct overhaul kit. The exploded view shows all components, but you still need the service manual for clearance specs and assembly procedures.

Is the parts index searchable in the PDF?

Yes – the PDF includes bookmarks for every section at minimum. You can open the index page and search by part number. The index is printed in the original document (pages 279 as I recall) and is fully text-searchable in the electronic version. That beats flipping paper.

You’ve got a machine to fix. Stop ordering the wrong seals and brackets. Access the Factory Manual for the Ihimer 28J and get the OEM parts breakdown on your screen in minutes. While you’re at it, check out the related manuals for other Ihimer models: Ihimer 80 Parts Catalog – OEM Factory Specs for Mini Excavator, Ihimer 80VX 80NX3 Parts Catalog – Factory OEM Parts List, and Ihimer 14NXT Parts Catalog – Factory OEM Specs. Each one built the same way – factory original, no shortcuts.