Galion 503, 160, T-500, T-600, T-700 1973 Workshop Manual

You ever get a grader back from a job with a burned-up transmission because some joker guessed on the gear oil? That’s why you need the Galion 503, 160, T-500, T-600, T-700 1973 Workshop Manual. This isn’t a novel. It’s 18 pages of factory lubrication tables that tell you exactly what goes where, at what temperature, and with what additive package. The original OEM binder section published by Galion Manufacturing in August 1973 – file J, section 1.

Lubrication Tables A Through W: The Only Specs You Need

Twenty-three tables, page 5 through page 14. Every fluid from SAE 90 straight mineral gear oil (Table A) to Hydraulic Brake Fluid (Table W). Each table lists the exact viscosity grade, temperature range, and whether it’s an extreme-pressure lubricant with sulphur-chlorine-lead or a multi-purpose type without SCL. That distinction matters: using an EP gear oil on bronze bushings eats them alive. The manual marks “Not SCL” in bold on Tables K through N so you don’t screw it up. Page 5 covers Tables A-C, and page 6 hits engine oils and transmission fluid.

Graders Section: Model 160, T-500, T-600, T-700 Lubrication Points

Page 3 lists the graders by serial number, temperature range, and the recommended table letter. For the Model 160, you get separate entries for Clark transmission and Dana transmission – two different fill specs. The T-500, T-500A, T-500L, T-600, T-600B, and T-700 all fall under “Torque Converter Powershift Transmission” with their own table assignments. Transfer case, final drive, circle reverse gear case, hydraulic system – every component gets a row. If you’re rebuilding a tandem drive chain type or an integral final drive, the table number is right there.

Engine and Transmission Oil – What the Tables Tell You

Table D calls for SAE 50 HD engine oil above 32°F, Table E for SAE 30 HD, and Table F for SAE 10W. These aren’t suggestions – they’re the factory minimum quality requirement. For the transmission, Table G covers Type A, Suffix A or Dexron automatic transmission fluid. The manual explicitly says Galion does not recommend a specific brand, but the oil must meet the listed spec. Ignore that and you’ll get clutch slippage in a power shift or a whining differential.

Why OEM Verification Matters with 1973 Galion Equipment

Aftermarket manuals copy the pictures but leave out the footnotes. This 18-page original workshop manual came from the Galion binder – file J, section 1, revision dated 8/73. It includes the lubrication change procedure on page 14, plus specific notes like “not an E.P. lubricant” for straight mineral oils. The grader section alone covers models 101 through 160C and the complete T-series powershift line. You won’t find that level of detail in a reprint that lumps everything together.

Source Authenticity: This Is the Galion Shop Manual, Not a Reprint

The PDF you download is scanned from the actual binder section. File name Galion_503-160-T-500-T-600-T-700_1973_Workshop_Manual_en-60128011787.pdf. 18 pages, no missing pages, no third-party redactions. The index lists every table and every model variant – including rollers like the PTR differential and vibratory rollers. For a refresher on how a Manual Transmission works, check Manual Transmission and Manual Transmission. If you need earlier model years, see Galion T-600 T-400A T-500A T-500L T-600B 1972 Workshop Manual or the Galion T-400A, T-500A, T-500L, T-600B, 90A 1974 Workshop Manual. For operators wanting safety and basics, there’s the Galion 150A 150FA 1982 Operators Manual – Factory Specs & Safety.

FAQ

Does this manual cover engine overhaul?

No. This manual is for lubrication specifications only, not engine disassembly.

What models are included in the grader section?

The grader section covers models 101, 102, 103, 116, 201, 202, 203, 303, 401, 402, 450, 104, 118, 160, 160A, 160B, 160C, 104A, 104B, 104C, 118A, 118B, 118C, plus the T-400A, T-500, T-500A, T-500L, T-600, T-600B, T-700, and 160L. Rollers and cranes are also included.

Why can’t I use a generic service manual instead?

Generic manuals treat all gear oils the same. This factory manual distinguishes between SAE 90 straight mineral (not EP) and SAE 90 Multi-Purpose EP (not SCL). If you fill a worm gear box with the wrong additive package, you’ll wipe out the bronze gear within hours. The OEM also lists temperature-specific tables – Table I for cold-weather hydraulic oil, Table N for low-temperature gear lubricant. Those details don’t exist in aftermarket books.

Is the manual scanned clearly and complete?

Yes. 18 pages from the original binder, including all 23 tables and the lubrication change procedure. No missing pages, no blurry sections.

If you’re working on a Galion grader or roller from the 70s, you need this manual. Download the Factory Manual now and put the right fluid in every port.