Description

Michigan 12B GAS, 12B DIESEL Parts Catalog

You’ve got a Michigan 12B on the lot and you’re staring at a part that’s been on the machine since the 1960s. The casting number is worn off, the aftermarket listings show the wrong bolt pattern, and you’re about to order something that won’t fit. That’s exactly why you need the Michigan 12B GAS, 12B DIESEL Parts Catalog – 166 pages of factory-issued part numbers, exploded views, and serial number splits. No guesswork. No generic diagrams that leave out the key washer. This is the original 1695-R2 manual from Clark Equipment Company, covering 12B GAS from serial 1223 through 2AA101 and 12B DIESEL from 1223D through 2AB101. Every page is a direct copy of what the dealer used to order parts. Stop chasing ghosts – get the exact number.

Boom Cylinder Assembly – Page 72

Boom cylinder leak? Seals gone? Page 72 shows the complete Boom Cylinder Assembly with every seal, ring, and bushing called out by part number. You don’t disassemble a cylinder and measure the bore hoping it matches some chart. You open the catalog, find your serial number range, and order the rebuild kit that’s listed. Same for the Bucket Cylinder Assembly on pages 73 and 75. The manual gives you the Clark part number – match that to what you pull off, and you’re done in one trip to the parts counter.

Battery Cables and Wiring – Page 79

Electrical gremlins on a 12B are common because the original cloth-wrapped wiring dries out and shorts. Page 79 covers the Battery Cables and Wiring – not just a vague schematic, but a parts breakdown of the harness, terminals, and the Battery and Battery Box on page 78. Want to know which Ammeter fits? That’s on pages 76-77. I’ve seen techs spend three hours tracing a wire that’s listed with its own part number. Save the labor. Use the catalog.

Converter and Transmission Hydraulic Systems – Pages 32-35

The Torque Converter and Transmission hydraulic system on the 12B has separate sections for GAS (pages 32-34) and DIESEL (page 35). The Converter Pressure Regulator Valve Assembly is on page 29. If you’re rebuilding the valve body, you need the exact spool and spring stack – that’s in this manual. Also note the Converter Temperature Sender Unit listings – critical for diagnosing overheat issues without swapping parts randomly. The manual gives you the sender part number for each variant. Use it.

Axle Assemblies: Front Drive and Rear Steer

Front Drive Axle Assembly – page 37. Rear Steer Axle Assembly – page 40. Axle Tie Rod Assembly and Tie Rod End Assembly – pages 40-41. These sections are pure gold when you’re pulling a knuckle. The exploded views show every shim, bearing, and seal. No more guessing which inner axle seal fits the 12B DIESEL vs the gas model – the serial number ranges are printed right there. And page 42 gives you the Planet Spider Assembly for the front brake, which is a common wear item. Order the correct spider before you start the tear-down.

Bucket and Carrier Assembly – Pages 1-7

Bucket Cutting Edge, Bucket Carrier Assembly, and the full Bucket Assembly are detailed across pages 1 through 7. The 12B came with different bucket options depending on the year and engine. Page 6 shows the cutting edge part numbers. If you’re welding on a new edge, you need the right bolt pattern and thickness. This catalog gives you the OEM dimensions. Don’t fake it – factory specs are why you buy this.

Why This Parts Catalog Beats Aftermarket Books

Every aftermarket parts catalog I’ve seen for the Michigan 12B is a bad photocopy of a photocopy, with numbers smudged and parts missing. This one is the original Clark scan: sharp exploded views, clear part number callouts, and the serial number breaks that tell you exactly which axle, which cylinder, which pump your machine has. The manual also includes the full INDEX MODEL 121 – look up any component alphabetically. Accelerator pedal linkage, diesel vs. gas – page 14 vs 15. Air cleaner and muffler – page 12 vs 13. You get the idea. No shortcuts.

Frequently Asked Questions

Will this manual help me identify a part that has no visible number?

Yes. Use the exploded view pages. Find the assembly your part belongs to (e.g., Boom Cylinder on page 72) and compare the shape and location. The part numbers are listed with description text. If the part is not shown, check the Index – every component is listed alphabetically.

Does it cover both 12B GAS and 12B DIESEL in one book?

Yes. The catalog has separate sections where needed. For example, the Accelerator Pedal and Linkage is page 14 for gas, page 15 for diesel. The Transmission and Converter Hydraulic System has gas pages 32-34 and diesel page 35. The serial number ranges are printed at the front.

How do I know which serial number range my machine falls in?

Look at the first page of the manual. It lists: 12B GAS – 1223 thru 1815, 7423 thru 7616, 1AA681 thru 1AA999, 2AA101 and thereafter. 12B DIESEL – 1223D thru 1815D, 7423D thru 7616D, 1AB108 thru 1AB999, 2AB101 and thereafter. Write your serial number in the space provided.

Can I use this to order parts for a later model Michigan wheel loader?

No. This catalog is specific to the 12B Tractor Shovel with the serial ranges listed. For other models, you need their respective OEM parts manuals. Check the related manuals below for other Michigan loaders.

Stop wasting time on aftermarket numbers that don’t match. This 166-page factory parts catalog puts the original Clark part numbers in your hands. Every cylinder, every wire, every seal – it’s in there. Access the Factory Manual now and keep it on your bench or tablet.

Related Manuals:

• VOLVO BM 125C Wheel Loader Parts Catalog
• Michigan 851 Parts Catalog – 72-Page Factory Parts Manual
• Michigan 85III 1965 Parts Catalog – Factory OEM Parts Breakdown

For further reference on modern emission controls that may affect replacement parts, see Diesel Particulate Filters and Exhaust Gas Recirculation (EGR).