Every part on your TB025 Mini Excavator lives somewhere in this 458-page Takeuchi TB025 Parts Manual PDF (OEM #PE3-102Z5), the factory parts catalog covering the machine from crawler belt to bucket pin. You get exploded views for the undercarriage, turntable, hydraulic devices, hoe attachment, cab, and both engine variants (3TN84L-RTBZ and 3TNE84-TBZ/TBY), each with factory part numbers keyed to the drawing. A full index and serial-number breaks tell you which bucket or seat variant your machine actually left the plant with. Ordering shims? The boom swing cylinder is shimmed from a 0.2 mm and 3.5 mm pair (p. 36) and the bucket cylinder takes 0.5 mm (p. 199); even the instrument panel bulb is called out at 12V, 2W. No more reading casting numbers off greasy housings and hoping the dealer guesses right. Bookmarked by section; pull it up on your phone, search the part name, and order once.
What's Inside This Takeuchi TB025 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Undercarriage | 12-29 | Lower Frame, Crawler Belt, Carrier Roller, Track Roller, Front Idler, Track Adjuster, Travel Device, Dozer Blade |
| Turntable & Control Lever | 30-87 | Slewing Device, Turntable, Boom Swing, Travel Lever, Operation Lever; Right (Multi Pattern), Operation Lever; Right (A-B Pattern), Operation Lever; Left (Multi Pattern) |
| Engine & Electrical System | 88-117 | Engine & Accessories 1, Engine & Accessories 2, Control Box, Engine Control, Electrical 1, Electrical 1 (for Australia), Electrical 2, Electrical 3 (Cab) (1255001~1255720) |
| Hydraulic Piping & Tank | 118-142 | Grease Piping, Valve & Accessories (Link Type), Valve & Accessories 1 (Hydraulic Type), Valve & Accessories 2 (Hydraulic Type), Piping; Upper 1, Piping; Upper 2 |
| Cover & Cab | 143-191 | Cover 1, Cover 2, Cover 3, Seat (Link Type, For Japan), Seat (Hydraulic Type, Seat, Cab 1, Cab 1 (ROPS & FOPS) |
| Hoe Attachment | 192-214 | Hoe, Telescopic Arm, Bucket 1 (1255001~1255474), Bucket 2 (1255001~1255474), Bucket 3, Bucket 4 (1255475~), Bucket 5 (for U.S.A.), Piping; Hoe 1 |
| Decal & Tool | 215-285 | Decal (Tcm, For Japan), Decal (Job-Ace, Decal (for Japan) (1255001~1256616) |
| Hydraulic Device | 286-358 | Swivel Joint, Control Valve 1 (Link Type), Control Valve 2 (Link Type), Control Valve 1 (Hydraulic Type), Control Valve 2 (Hydraulic Type), Pilot Valve |
| Engine 3TN84L-Rtbz | 380-423 | Index, Cylinder Block, Gear Housing, Flywheel Housing & Lub.Oil Sump, Cylinder Head & Bonnet, Suc. Manifold & Air Cleaner, Exh. Manifold & Silencer, Camshaft & Driving Gear |
| Engine 3TNE84-Tbz/Tby | 424-458 | Index, Cylinder Block, Gear Housing, Flywheel Housing & Lub. Oil Sump, Cylinder Head & Bonnet, Suction Manifold & Air Cleaner, Exhaust Manifold & Silencer, Camshaft & Driving Gear |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Boom swing cylinder shim thickness (selection) | 0.2 mm and 3.5 mm | p. 36 |
| Bucket cylinder shim thickness | 0.5 mm | p. 199 |
| Bulb rating (instrument panel) | 12V, 2W | p. 95 |
Takeuchi TB025 Common Problems This Manual Covers
Takeuchi TB025 boom swing cylinder has side play, can't tell which shim thickness to order
Check the Turntable and Control Lever exploded views starting on page 30 for the boom swing cylinder assembly. Shims come in 0.2mm thickness on page 36 and 0.5mm on page 37; measure your existing pin play, then order enough shims from the parts list to close the gap.
Manual Section: Turntable & Control Lever p. 36Bucket pins and bushings worn, not sure which shim kit matches my serial number range
Pull up the boom and attachment exploded view on page 192 and match your bucket to its serial range before ordering. Bucket cylinder shims are listed at 0.5mm on page 199; Bucket 3 shim thicknesses run from 0.8mm to 3.2mm on page 203. Verify part numbers against your serial number in the parts list.
Manual Section: Hoe Attachment p. 192Two different engine sections in the parts book, ordered the wrong oil filter twice
Check the engine parts diagram on page 392 for the 3TN84L-RTBZ. The filter measures 90X80L and carries part number 1219150-35150, listed on page 401. If your serial plate shows the 3TNE84-TBZ or TBY engine instead, order from the separate parts section starting on page 424.
Manual Section: Engine 3Tn84L-Rtbz p. 392Instrument panel bulbs burned out, need the correct bulb spec before ordering replacements
Check the electrical parts lists in the Engine and Electrical System section starting on page 88. The instrument panel bulb is a 12V, 2W unit, listed on page 95. Match the part number to your control box assembly before ordering, since wiring harness variants differ across serial ranges.
Manual Section: Engine & Electrical System p. 95Frequently Asked Questions
What are the replacement specifications for hydraulic filters?
The hydraulic filter cartridge for the TB025 is part number 15510-35110. This filter is located within the hydraulic tank assembly, as detailed on page 137. p. 137
Where do I find the oil filter for the 3TN84L-RTBZ engine?
The 3TN84L-RTBZ engine parts catalog is bound into this book at pages 380-423 (the 3TNE84-TBZ/TBY variant follows at 424-458), and the lubrication drawings there carry the filter. Those engine pages are scanned drawings without a text layer, so read the callout off the drawing. The machine hydraulic FILTER ASSY is listed separately on page 137. p. 380
What is the part number for the fuel filter element on the 3TN84L-RTBZ engine?
The fuel filter element for the 3TN84L-RTBZ engine is part number 129150-55650, found in the fuel line section on page 405. p. 405
What is the part number for the alternator belt on the 3TN84L-RTBZ engine?
The V-belt for the 3TN84L-RTBZ engine is part number 129150-42350, as specified in the cooling water system section on page 401. p. 401
How quickly can I access this Takeuchi TB025 manual after buying?
Instant PDF download. You get the full 458-page searchable Parts Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
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