Description

Clark-hurth 45A Parts Catalog – 95 Pages of OEM Factory Specs

If you’re working on a Clark-hurth Michigan Model 45A loader, the worst thing you can do is order parts by guessing. I’ve seen guys buy the wrong brake wheel cylinder because they looked at a blurry aftermarket diagram. Then the machine sits. That costs money. This Clark-hurth 45A Parts Catalog runs 95 pages of factory exploded views and part numbers. No guesswork.

This isn’t a reprint or a scan from some third party. It’s the original OEM document from Clark-hurth, Construction Machinery Division. Every page shows exactly what came on the machine from the factory. The index alone lists over 40 major groups: accelerator pedal, air cleaner, axles, brakes, bucket, converter, cylinders, engine mounting, exhaust, frame, fuel system, hood, hydraulics, instrument panel, nameplates, propshaft, pumps, radiator, and seat.

Axle Group: Front and Rear Differentials and Planet Carriers

The axle section covers both front and rear axle assemblies (pages 1A9 and 1A11), differentials and carriers (front 1A13, rear 1B1), planet carriers (front 1B3, rear 1B4), and the tie rod (1B5). These are the parts that take the worst abuse in a loader. If you need a new planet gear or differential bearing, this catalog gives you the exact part number so you don’t end up with a mismatched set that fails in 50 hours. I’ve had to explain that to too many guys who skimped on identification.

Brake System: Which Components Are Listed

Brakes on a 45A are a big deal. The catalog breaks down brake assembly front and rear (pages 1B7–1B8), wheel cylinder (1B9), master cylinder (1B13), parking brake (1B14), and the entire brake system (1B11). Each exploded view shows seals, pistons, springs, and hardware. If you’re rebuilding wheel cylinders, you’ll see the kit number right there. No hunting through aftermarket cross-reference charts that might be wrong.

Hydraulic System Maps – Boom, Bucket, and Steering

Hydraulic leaks or dead cylinders? The hydraulic group covers the reservoir (1D13), boom and bucket system (1D14), and steering system (1E2). The diagrams show hose routing, fittings, and cylinder port locations. You want to know which seal kit fits the steering cylinder? Page 1D1. The catalog also includes the pump group: boom and bucket pump (1E10), converter charging pump (1E11), and steering pump (1E12).

Why Factory Parts Catalog Beats Aftermarket Diagrams

Aftermarket parts catalogs often consolidate several models into one generic drawing. That works about as well as a universal bolt – it fits nothing tight. This Clark-hurth catalog is model-specific to the 45A. The part numbers are the ones stamped on the original components. When you walk into a dealer or call a supplier, you give them the number from page 1C7 for the converter assembly, and they hand you the right part. No returns, no delays. For related machines, see the Clark-hurth L320 1991 Parts Catalog – 690 Pages OEM Specs or the Clark-hurth 85III 1965 Parts Catalog – Factory OEM Specs. The Clark-hurth 85A, 85A1 1978 Parts Catalog – OEM Factory Specs covers similar era machines.

5 Critical Systems Covered in These 95 Pages

1. Axles and final drives – differentials, planet carriers, tie rod
2. Brakes – front, rear, wheel cylinders, master cylinder, parking brake
3. Hydraulics – boom/bucket, steering, reservoir
4. Pumps – boom/bucket, converter charging, steering
5. Converter – assembly and regulator valve

These are the systems that cause the most downtime on a 45A. Having the correct part numbers in hand before you pull the old part saves you a week of waiting for the wrong shipment. The fuel system section (1D8) shows the tank, lines, and filter. If you’re diagnosing a fuel leak, you can identify the exact banjo fitting from the diagram. Also covered: engine mounting (1D2), exhaust (1D5), radiator (1E13), and even the decals (1E5).

I’ve been in shops where a mechanic needed a parking brake cable. He spent two days cross-referencing because the aftermarket parts book listed three different lengths. This catalog shows the factory cable with the original part number. Done in ten minutes. For more background on machine design, the Automotive Industry Overview covers the evolution of heavy equipment, and the Internal Combustion Engine explains the power unit basics.

Frequently Asked Questions

Does this catalog include torque specs?

No, this catalog lists parts, not torque values.

Can I use this to rebuild the entire machine?

This is a parts identification catalog – it gives you every factory part number, exploded view, and quantity needed for the 45A. To rebuild you also need a service manual for procedures, clearances, and torque specs. But without this catalog you’ll waste time hunting down the correct parts, especially for obscure items like the converter regulator valve (page 1C10) or the steering cylinder (1D1). It’s an essential companion to a service manual.

Are the diagrams clear enough for a home mechanic?

Yes. These are factory black-and-white line drawings with clear callout numbers. Each part has a reference number keyed to a parts list. You don’t need special training to read them.

Is this the same as the dealer’s parts system?

Yes. These are the exact part numbers used by Clark-hurth dealers when ordering components for the 45A. No modifications, no third-party cross-references.

If you want to keep your 45A running without downtime, get the factory parts identification. Access the Factory Manual.