Description

Manitowoc 660 2012 Service Manual

You run a Manitowoc 660 2012 Service Manual on a job site – wait, no, you run the crane, but you need the Manitowoc 660 2012 Service Manual to keep it running. I’ve seen too many guys pull up a cut-rate PDF from some third-party reseller that says “tighten bolts to spec” but doesn’t list the damn spec. Then they guess. Then something breaks. That’s how you turn a three-hour clutch adjustment into a full teardown. This OEM factory manual from AutoRepairManuals is the real deal – 164 pages, published by Manitowoc themselves, covering the 660 Hoist for crane model number 1128. It’s divided into eight sections: General, Attachment, Maintenance, Lubrication, Capacities, Operating Controls, Adjustments, and Troubleshooting. Plus there’s a dedicated wire rope section and diesel exhaust warnings. If you’re a home garage guy or a shop owner who wants to avoid liability and wasted time, this is what you put on your bench.

Manitowoc 660 2012 Service Manual – The Only Specs You Should Trust

Page 1 of this manual lays out the basic specification sheet and reminds you that the crane serial number is the only way to get correct parts. It also hits you with the California Proposition 65 warning – diesel engine exhaust causes cancer, battery posts contain lead, and sparks can start fires. That’s not fluff; that’s legal reality. The manual keeps you honest. Aftermarket stuff waters these warnings down or leaves them out. I’ve seen generic manuals that skip the spark arrestor requirement for dry vegetation areas. That gets people fined – or worse. Stick with the OEM version. The Engine section (spread across several folios) includes cold weather starting aid, coolant and oil pan heaters, battery care, and air system pressure settings. Page 5 gives you the full index so you can jump straight to what you need without flipping through 164 pages blind.

Section 7 Adjustments: Brakes, Clutches, and Control Linkages

Section 7 is where the real work lives. Every adjustment point for the 660 hoist – brakes, clutches, control linkages – is laid out step-by-step with the required tool list. You need a feeler gauge? It tells you the gap. You need a torque wrench? It gives you the ft-lbs. No guessing. No “tighten until snug” garbage. The manual also covers the air system pressure settings (folio 1308) and the air piping schematic at the winch (schematic 180861). If you’re dealing with a hoist that drifts or a clutch that slips, start in Section 7. I’d bet most problems trace back to someone skipping the adjustment procedure in this section just because they were in a hurry.

Wire Rope Inspection and Replacement: Factory Procedures

The wire rope section is separate but mandatory reading. It covers storage, installation (including removing from the shipping reel, seizing, cutting, anchoring to drum, wedge socket, and button socket), breaking in new rope, and inspection. Frequent inspection, periodic inspection, and criteria for replacement – broken wires, wear, diameter loss. There’s also sheave, roller, and drum inspection, plus how to distribute wear across the rope. If you’re running a 660 on a construction site, wire rope is your single biggest safety item. A snapped cable at 30 feet can kill someone. This manual gives you the Canton, Ohio–style specs that keep it alive. I’ve seen generic manuals say “inspect regularly” without telling you what to look for. That’s worthless.

Lubrication and Fluid Capacities: What the Manual Tells You

Section 4 (Lubrication) and Section 5 (Capacities) cover all fluids: engine oil, fuel oil, gear oil (hydraulic cranes and traditional cranes), hydraulic oil, and cooling system. The manual distinguishes between hydraulic crane and traditional crane gear oil specs – get that wrong and you’re looking at pump cavitation or seal failure. It also lists the air system requirements and battery electrolyte levels. If you’re a home garage guy who just bought a used 660, don’t guess the transmission fluid type. Use the factory spec. For related machinery, check the Manitowoc 660 Parts Catalog for exact part numbers, or the Manitowoc 2000 Service Manual – Factory Specs & Procedures for larger models. For the 4100W Ringer, see the Manitowoc 4100W Ringer S3 2009 Service Manual – OEM Factory Specs.

Does This Manual Cover the Engine?

Yes. The manual includes folios for cold weather starting aid, ether, coolant and oil pan heaters, battery, engine oil, fuel oil, and cooling system. The Engine is covered under Section 3 Maintenance and the separate diesel exhaust warnings. If you’re replacing a water pump or diagnosing a no-start in cold weather, the specs are here. The manual also covers the air system (compressor, pressure settings) which interacts with the engine throttle on some models. For drivetrain details like the Manual Transmission, refer to the crane’s specific driveline diagrams – the manual does not include transmission rebuild steps, but it does list the gear oil grade for the hoist drive. For automotive applications, a Manual Transmission might have similar fluid requirements, but always trust the OEM spec for your machine.

Why OEM Beats Aftermarket Every Time

Aftermarket manuals are a gamble. They often combine specs from multiple years, skip the safety warnings, and reprint index pages with wrong page numbers. This 2012 Service Manual is an original Manitowoc publication – you can see the folio numbers (e.g., 1537, 1113, 931, 1315) and the exact publication dates (04/08/09, 08/23/10, etc.). The OCR excerpt shows the authentic warning language: “Do not operate or work on this crane without first reading and understanding Operator’s Manual and Capacity Charts.” That’s not just a suggestion; it’s a liability statement. When you use the factory manual, you have the correct torque values, the correct wire rope replacement criteria, and the correct hydraulic oil viscosity for San Antonio summer heat or Fairbanks winter cold. No compromise.

Is this manual for the 660 hoist only or does it cover the entire crane?

It is written for the 660 Hoist as part of the crane model 1128. It includes sections on the carrier (engine, cooling, etc.) and the hoist itself, but not the full crane superstructure. For the complete crane you need the crane-specific manual.

What safety warnings are included?

Diesel exhaust cancer warning, battery lead warning, spark arrestor requirements, fire extinguisher location, and electrocution hazard near power lines.

How many pages?

164 pages.

Does it include wiring diagrams?

It includes air piping schematics (e.g., air piping at winch, control air piping) but not electrical wiring diagrams. The manual focuses on mechanical and hydraulic systems. Electrical schematics are in a separate electrical manual from Manitowoc.

Stop burning billable hours on half-correct information. You’ve got the machine, you need the spec. Access the Factory Manual now – no generic third-party nonsense, just the OEM documentation that keeps your 660 running safe and on-spec.