If you are ordering parts for a Caterpillar TH255 telehandler and you don’t have the factory parts breakdown, you are gambling with your repair budget. One wrong nut or misidentified bracket can sideline a machine for days. I have seen more than a few jobs go sideways because a parts guy pulled up a reprint from a third-party site and the exploded view was blurry or the part number was superseded. This is the real thing: the Caterpillar TH255 2011 Parts Catalog from the factory, 286 pages, direct from the manufacturer’s archives.
Caterpillar TH255 2011 Parts Catalog: Your Parts Bible
Every figure in this catalog is a factory-original exploded view. Section 4 – Engine & Attaching Parts gives you six figures covering the Cat engine installation, engine assembly, radiator/oil cooler, air cleaner, and exhaust. Need the part number for a fan belt or a gasket? Figure 4-2 shows the engine assembly with every component callout. The same goes for the drive train: Section 5 has front and rear axle assemblies, differentials, hub reductions, brakes, steering components, driveshaft, and tires. You get the part numbers for the bearings, seals, and gears. That is gold when you are rebuilding an axle.
5 Figures of Boom Assembly – Pads, Shims, and Couplers
Section 2 covers the boom in five figures. Figure 2-2 details the pads, shims, and spacers. If you are replacing wear pads on a TH255 boom, you need those part numbers to order the correct thickness. Figure 2-3 shows the boom pin installation with pin part numbers. Figure 2-4 and 2-5 cover the quick coupler and universal quick coupler. Without this catalog, you are pulling pins and measuring. With it, you order parts once. That is the difference between a fix and a tow.
Where the Electrical Section Saves Your Harness
Electrical problems on telehandlers can be a nightmare. Section 10 has 16 figures showing the electrical install, road lights, work lights, cab switches, fuse holders, and multiple harness layouts. Figure 10-6 shows the frame base harness, Figure 10-7 the frame option harness, Figure 10-8 the cab harness. You get the part numbers for connectors, wires, and sensors. If you are troubleshooting a no-crank condition or adding work lights, this section alone is worth the price of admission. It beats tracing wires with a test light and guessing which connector to order.
Hydraulic Circuits and Components: 11 Figures of Valve and Cylinder Data
The hydraulic system on a TH255 has supply, dump, steer select, service brake, boom joystick, lift cylinder, extend/retract cylinder, tilt and compensating, auxiliary hydraulics, rear auxiliary, and pressure relief. Section 8 covers all those circuits. Section 9 dives into the components: lift cylinder, extend/retract cylinder, tilt cylinder, compensating cylinder, quick coupler cylinder, rotate/side tilt cylinder, grapple bucket cylinder, side shift cylinder, main control valve, front drive motor, hydrostatic transmission, divertor valve, steering select valve, blocking valve, pilot select valve, brake valves, LSI valve, and auxiliary pressure relief valve. Each component has its own figure with part numbers for seals, pistons, and valves. If you need to rebuild a cylinder, you can find the exact seal kit number without disassembly.
Who Needs This Catalog and Why
If you own or maintain a Caterpillar TH255 telehandler with serial number TBS00100 and after, this catalog is for you. Mechanics in the field need it to order parts without pulling the machine apart first. Parts managers need it to verify supersessions. DIY owners need it to avoid ordering the wrong part from a generic online listing. This is not a service manual—it is a parts reference. You pair it with a service manual for specs. For the service side, look at the Caterpillar TH255 2012 Service Manual – Factory Specs to get torque values and procedures. For other Caterpillar equipment, the Caterpillar C15 2006 Parts Catalog – Factory OEM 884 Pages and Caterpillar Elevated Sprocket Tractors Parts Catalog – 971 Pages are available as well.
Source Authenticity – This Is the Factory Print
This catalog is the original factory print, revision E from January 13, 2011. It covers TH255 serial numbers TBS00100 and after. The effectivity page lists revisions from 2008 through 2011. You are getting the latest parts data for that production range. I have seen aftermarket parts lists that omit figures or use low-resolution scans. This one is scanned from the actual OEM document. Every part number is the same one Caterpillar uses in their system. That matters when you call the dealer to order. They will cross-reference your number without hassle. For more context on why OEM documentation is critical in the automotive and equipment industry, consider that even small errors in part numbers can cause downtime. The same principle applies to equipment repair—always use the Automotive Industry Overview as a reference for industry standards.
Skip the aftermarket reprints.
Frequently Asked Questions
- Does this catalog include part numbers for the engine?
- Yes. Section 4 breaks down the Cat engine into individual parts with numbers.
- Can I use this to rebuild the boom cylinders?
- The catalog lists the components for the lift cylinder (Figure 9-1), extend/retract cylinder (Figure 9-2), and tilt cylinder (Figure 9-3). It gives you the part numbers for seals, rods, pistons, and bushings. You can cross-reference those numbers to order the correct rebuild kit. Without this catalog, you would be measuring old parts and hoping they match. That route leads to lost time and wrong seals. The factory catalog removes that guesswork entirely.
- Is this a service manual or a parts catalog?
- Parts catalog only. It does not contain repair procedures or torque specs.
- How many pages does it have?
- 286 pages of exploded views and part number tables.
You can keep flipping through blurry aftermarket copies or guessing part numbers. Or you can get the real thing. Download the Factory Manual here and start ordering parts with certainty.
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