Description

Clark-hurth 125A Parts Catalog – Factory Specs for the Tractor Shovel

If you’ve ever spent a Saturday pulling a transmission only to find you ordered the wrong seal because some aftermarket catalog had a blurry drawing, you know the frustration. That’s exactly why this Clark-hurth 125A Parts Catalog exists. It’s 148 pages of factory part numbers, exploded views, and assembly breakdowns that match the machine Clark built. Nou2003reprints, no generic substitutes, no third-party interpretations. This is the original manual from Construction Machinery Division, Clark Equipment Company. The one that tells you exactly which brake wheel cylinder goes on the rear axle and which part number fits the G.M. version versus the Waukesha. I’ve been under heavy equipment long enough to know that a mismatched part can cost you a job – or a finger. This catalog stops that.

Look at the table of contents: Bucket and Boom Hydraulic Pump—G.M. 96, Bucket and Boom Hydraulic System—Waukesha 99, 101, 103. That’s not a list of chapters; that’s a roadmap to the exact piece you need. Need the control cover assembly for the transmission? Page 33 has the breakdown, down to the last bolt. The indexing is by system and engine variant, so you’re not flipping through generic sections. You go straight to the page for your machine’s serial number range. This catalog covers the 125A with Waukesha (serial 12123–14130) and G.M. (13337–13556, 16123–16417). If your serial is in that range, you’re holding the right book.

Bucket and Boom Hydraulic Pump Breakdown

The hydraulic system is the heart of a tractor shovel. This catalog splits it by engine: the G.M. pump assembly is on page 96, the Waukesha version spans pages 94, 96, 97. Each page shows the pump housing, drive gear, bearings, and seals as separate numbered items. You can order a new shaft seal without buying the whole pump. That’s practical. That’s how you keep a machine running instead of waiting a week for a reman unit. And if you’re replacing a bucket cylinder, page 107 gives you the exact part numbers for the cylinder assembly, including the rod and gland nut.

Axle Assembly—Front Drive and Rear Drive Steer

Front drive axle assembly is on page 14. Rear drive steer axle on page 115. Two very different assemblies. The rear steer axle has kingpins, tie rods, and a steering knuckle that the front doesn’t. If you order a front axle seal for a rear application, you’ll be pulling it apart again. This manual shows each axle in exploded view, with every bearing, shim, and seal listed. You need the part number for the brake assembly on the rear axle? Page 71. For the front? Page 69. That kind of precision saves trips to the parts house.

Torque Converter and Charging Pump Specs

The torque converter section (pages 39–47) covers the stator, turbine, and impeller, but also lists the converter charging pump on pages 48–49. I’ve seen guys guess at the pump pressure and blow a seal. This catalog doesn’t give torque specs (that’s for a service manual), but it gives you the exact part numbers for the pump gear set, housing, and cover. Pair it with the factory service manual and you’ve got a complete picture.

Brake Systems: From Master Cylinder to Wheel Cylinder

Brake vacuum lines (page 5), vacuum pump—G.M. (page 4) and Waukesha Diesel (page 4 again? Actually listed twice in TOC – careful). The brake master cylinder is on page 69, the wheel cylinders on pages 70–71. Parking brake controls on page 75. If you’re rebuilding the brakes on a 125A, you need every sealing ring and spring. This catalog gives them. Don’t trust aftermarket equivalents that claim “fits many models.” They don’t fit. Get the Clark part number from this book, order it, and be done.

OEM Index vs. Aftermarket Confusion

I have a stack of aftermarket parts books that look like they were photocopied from a fax machine. The Clark-hurth 125A Parts Catalog is the original OEM print from Clark Equipment Company. The index on page 3 lists every component alphabetically, from Accelerator Pedal to Converter Charging Pump. No guesswork. No “compatible with” nonsense. If you’re rebuilding a machine that works for a living, you use the manual the factory used. That’s this one.

Audience Fit: Who Needs This Catalog?

Home garage guys with a retired 125A in their barn? You’ll use this to find that oddball bucket cutting edge part number (page 9). Shops that maintain a fleet? You’ll wear out the spine on the brake and hydraulic sections. Even beginners can read it – the exploded views are clear, and the part numbers link to Clark’s ordering system. But if you’re a DIYer who’s never touched a torque converter, start by reading the transmission control cover section (page 33) to understand what you’re looking at before you order.

Does this catalog include assembly torque values or repair procedures?

No. This is a Parts Catalog, not a service manual. It contains part numbers, exploded views, and quantities. For torque specs and repair steps, you need the Clark-hurth 125A Service Manual. The two books work together.

What’s the difference between the G.M. and Waukesha versions in this catalog?

The 125A came with two engine options: G.M. diesel and Waukesha (gas or diesel). The catalog separates every component by engine variant. For example, the bucket and boom hydraulic pump is on page 96 for G.M. and on pages 94, 96, 97 for Waukesha. The brake vacuum pump also differs (page 4 for G.M., page 4 for Waukesha Diesel). Always check your engine serial number against the range listed on page 1.

Look up related manuals: Clark 125A Parts Manual Tractor Shovel, Clark 125A Tractor Shovel Series II Parts Manual, Clark-hurth L320 1991 Parts Catalog – 690 Pages OEM Specs. For broader context on how these components fit into equipment design, check out Automotive Industry Overview and Internal Combustion Engine.

Stop wasting time with aftermarket parts that don’t fit. Access the Factory Manual now, and get the right part number the first time.