Detroit Diesel Series 60, Series 60G Workshop Manual

I’ve seen too many guys ruin a Series 60 because they trusted a generic torque chart. That camshaft cap setup—sixteen bolts, four different cap configurations—you swap one cap and you’re buying a new head. This Detroit Diesel Series 60, Series 60G Workshop Manual is the only factory document that gives you the exact bolt arrangement, the dowel pin locations, and the cap numbering. Twenty-six pages of original Power Service Literature. No reprints, no third-party edits.

Camshaft Bearing and Cap Configurations

The manual starts by putting you inside the valve cover. Page 2 shows you exactly which caps use three bolts (cap No. 4), which use two bolts (caps 2, 3, 5, 6), and which use a stud and a bolt (caps 1 and 7). If you try to install cap No. 2 in the No. 3 position, you’ll bind the camshaft. The manual labels each cap and tells you the stud-and-nut arrangement on the end caps that lets you pull the rocker shaft without breaking the gasket seal. That kind of detail isn’t in any aftermarket PDF.

Gear Train Timing – Why the Manual Matters

Section 1.28 leads into the gear train. The camshaft drive gear is registered to its hub by a Woodruff key and retained by a bolt through the gear and into the camshaft. Page 3 directs you to “1.24.2.1 Verify Engine Timing” for gear lash measurement and adjustment. You need that procedure—bad gear lash trashes the cam and injector timing. This manual gives you the factory method, not a generic “align the marks and hope.”

26 Pages of Factory-Specific Data

Twenty-six pages might not sound like a lot, but every page is dense with OEM drawings and specs. The camshaft thrust plate location, the O‑ring groove, the dowel pin hole—page 4 has a cross-section of the drive gear hub. You won’t find those part relationships in a Chilton or Haynes. This is the same book Detroit Diesel issued to its dealer techs. If you’re rebuilding a Series 60 or 60G, you need this Detroit Diesel Series 60 Technical Manual alongside it for the fuel system and DDEC diagnostics.

Workshop Tips from the Manual – Torque, Seals, and Assembly Order

The manual doesn’t waste space on pep talks. It tells you the camshaft cap bolts must be tightened in a specific sequence—and it shows the pattern. It warns you about the T‑ring seal behind the access cover. Miss that seal and you’ll get an oil leak that looks like a main seal failure. For torque values, you’ll need the companion Detroit Diesel Series 60 Technician’s Manual for the cylinder head and connecting rod specs, but this workshop manual has the camshaft and gear train numbers you’ll use on every rebuild.

Source Validity – OEM vs. Aftermarket Documentation

I’ve been wrenching since before most of you were born. Aftermarket manuals save you money on paper and cost you three times that in comebacks. The Detroit Diesel Series 60G is a gaseous-fuel variant—different cam profile, different valve timing. A generic manual won’t tell you that the 60G uses the same camshaft caps but different injector timing. This OEM document covers both models without guesswork. For electrical gremlins, pair it with DETROIT DIESEL SERIES 60 DDEC V Troubleshooting Manual—that’s the logical next step.

Does This Manual Cover the Fuel System?

No. This is a workshop manual focused on the engine mechanicals: camshaft, bearings, gear train, cylinder head, and valve actuation. For fuel system calibration and DDEC V wiring, you need the dedicated troubleshooting manual linked above. But if you’re pulling a Series 60 cam, this is the only guide you should trust.

What torque values are included in the manual?

The manual includes torque specs for camshaft cap bolts, drive gear bolts, and thrust plate fasteners. Exact values are listed on page 2 and page 4. Do not rely on memory—use the factory numbers.

Is the manual available in English?

This 26-page manual is scanned from original Detroit Diesel Power Service Literature, which was published in both English and Spanish. The version on our site has Spanish text. The diagrams and torque values are universal.

I’ve torqued more Series 60 head bolts than I’ve eaten hot meals. If you want the same results I get in my shop, you work from the factory book. Download the Factory Manual and keep it on your tablet or print it out. And if you’re still unsure about diesel fundamentals, read this Wikipedia article on diesel engines for background on the four-stroke cycle. For a deeper dive into diesel combustion theory, check this Wikipedia article on diesel engines.