Description

Clark-hurth C500 Y180, C500 Y200, C500 Y225S, C500 Y225L, C500 Y250S Service Manual

If you’ve ever had a lift truck down because some aftermarket manual told you the wrong main bearing torque, you know the cost. Not just the parts—the downtime, the come-back when it leaks, the hours chasing a spec that doesn’t exist. This is the original Clark-hurth factory service manual for the Clark-hurth C500 Y180, C500 Y200, C500 Y225S, C500 Y225L, and C500 Y250S. 705 pages of the exact same documentation the dealership techs used. No third-party reprint, no generic diagrams. This is the book that tells you how to pull the engine, tear down the transmission, set the valve lash on the Ford or Cummins, and reassemble the drive axle with the right preload. If you work on these trucks, you need this. Period.

Engine and Cooling – Factory Specs You Can Trust

Group 00 covers engine troubleshooting and removal, plus separate specification sections for Ford and Cummins engines. You get the firing order, compression limits, valve clearances, and head bolt torque sequences. Group 01 handles the cooling system—radiator removal, testing, maintenance, and radiator repair. No guesswork about which thermostat or coolant type. The factory procedure for bleeding air from the system is right there. Section 00-03 and 00-04 give you the exact numbers Clark-hurth used on the assembly line. Don’t trust an aftermarket chart that lumps all inline-six engines together. This manual differentiates.

Short on time? The engine troubleshooting flowchart in 00-01 cuts diagnostic time in half. Follow it step by step.

Fuel System: Induction, Linkage, and LPG Components

Group 02 is where most home garage guys get lost. The fuel system section includes troubleshooting, induction system details, accelerator linkage adjustment, and full coverage of the IMPCO LPG lock-off valve and vaporizer-regulator. If your truck runs on propane, sections 02-04 and 02-05 are gold. The lock-off valve troubleshooting procedure alone can save you from replacing a good part. The manual also covers the mechanical fuel pump and filter service for gasoline models. No guessing which vacuum line goes where—factory diagrams show every connection.

Transmission Overhaul – What the Clark-hurth Factory Manual Includes

Group 06 is huge. Starts with transmission troubleshooting, then the stall test procedure (critical for clutch slip diagnosis), removal, and clutch modulation adjustment. But the real meat is in the transmission maintenance and service subsection. It includes how the units operate, sectional views with parts identification (Figures A through J), disassembly, cleaning and inspection, reassembly, and specifications for the power shift transmission and torque converter. You get lubrication specs, trouble shooting guide, clutch and gear arrangement drawings, shielded bearing installation, ring gear installation, speed sensor bushing install, and drive plate installation. If you’ve ever tried to rebuild one of these without the clutch pack clearance specs, you know the risk of frying a transmission on the first test drive. This manual gives you the exact shim stack dimensions. For more on heavy-duty transmission data, see Spicer Clark-hurth HR Service Manual – Factory Specs for Heavy-Duty Transmission.

Does This Manual Cover the Drive Axle and Electrical Systems?

Yes. Group 20 takes you through drive axle troubleshooting, axle removal, wheel bearing adjustment, and the full Clark-hurth and Rockwell drive axle maintenance service. That includes planetary wheel end disassembly and reassembly, Cardan and Rzeppa steering joint procedures, and trunnion socket service. Group 14 covers electrical—general troubleshooting, starter and battery diagnostics with volt drop tests, alternator troubleshooting, wiring diagrams, and a list of required tools. The electrical checks section walks you through problem 1 (slow or sluggish cranking) and problem 2 (nothing happens). It’s the kind of detail that keeps you from throwing parts at a bad ground. For clutch and gear arrangement basics, Manual Transmission theory can help, but the factory procedure is what you need for this specific truck. Also check Manual Transmission for background on gear ratio fundamentals.

Source Validity – This Is the Original Clark-hurth SM-575

This manual is Book No. SM-575 2nd Revision, copyrighted 1997 and marked “Intended for CLARK dealers only”. It is not a copy or a compilation. It is the exact service manual that shipped from Clark Material Handling Company in Lexington, Kentucky. The serial number ranges covered are Y2235-1-7056 & above and Y2235HT-1-7061 & above for the C500 Y2235 Series. If you have one of these trucks, this is the only document that matters. Aftermarket manuals often rephrase steps and lose critical torque values or omit warnings. This manual has the factory safety messages intact. For similar OEM coverage, look at Clark-hurth 55A SERIES II Service Manual – 136 Pages of Factory Specs and Clark-hurth SM-715, TMX12-25, EPX16-20s 2007 Service Manual – 502 Page OEM Facto.

Frequently Asked Questions

Does this manual cover the C500 Y250S?

Yes, it covers all models listed: Y180 through Y250S.

What engines are included in the specs?

The manual dedicates entire sections to both Ford and Cummins engine specifications. Section 00-03 covers Ford engine specs including compression, valve clearances, and bolt torques. Section 00-04 does the same for Cummins. Each subsection includes troubleshooting charts, removal procedures, and reinstallation torque values. You also get the cooling system data—radiator removal, testing, and repair procedures. If you’re working on the engine, you need this factory data because aftermarket manuals often mix up the firing order or head bolt sequence. This manual gives you the exact numbers Clark-hurth used on the assembly line.

Can I use this manual for LPG fuel system repairs?

Yes. Sections 02-04 and 02-05 cover the IMPCO LPG lock-off valve and vaporizer-regulator in detail. There’s also troubleshooting for the induction system and accelerator linkage.

How many pages is this manual?

705 pages.

The only way to work on these trucks without wasting time is to have the genuine factory documentation. Access the Factory Manual now and keep it on the bench.