Description

Atlas Copco ROCKET BOOMER Wiring Diagram – Factory Electrical Schematics

You have a ROCKET BOOMER on the bench with a wire that melted because somebody guessed the pinout. I have seen that happen. On a $400,000 drilling rig, a wrong connection in the control cabinet can fry a PLC card or dump the boom hydraulics into neutral. That is why you need the Atlas Copco ROCKET BOOMER Wiring Diagram – the OEM 43-page document that came out of the Atlas Copco Rock Drills AB plant in Örebro, Sweden. Not a reprint. Not a third-party scan. This is the exact file the factory techs use when they build these machines.

Electric Diagram: Core of the Atlas Copco ROCKET BOOMER Wiring Diagram

The electric diagram starts on page 7 of the PDF. It covers the entire control system – solenoid drivers, sensor feedback, emergency stop circuits, and the CAN bus lines that talk to the diesel engine ECU. If you have ever chased a ground fault on a drilling jumbo, you know that aftermarket wiring drawings often skip the fuse ratings and wire gauge specs. This OEM diagram lists every connector pin and cable color. I use it to verify voltage drop at the boom solenoid bank without pulling the whole harness. For the charge pressure switch, the manual shows the exact terminal number and the expected millivolt range. No interpretation needed.

Hydraulic Diagram: Solenoid and Valve Layout

Page 25 holds the hydraulic schematic. This is not a cartoon – it is a proper ladder diagram with pressure relief settings and flow paths for the rock drill rotation circuit. The ROCKET BOOMER uses a load-sensing pump that deadheads if a solenoid fails to shift. With this diagram, you can trace the pilot line from the remote control joystick to the main spool. I have had to troubleshoot a stuck feed leg on a job site; the factory drawing showed me that a check valve in the return line was the culprit, not the cylinder seal. Without OEM data, you waste a day swapping parts.

Air/Water Diagram: Cooling System Routing

The air/water diagram on page 5 is often ignored until the machine overheats. It shows the compressed air supply for the drifter, the water misting system for dust control, and the coolant loop for the hydraulic oil cooler. The manual specifies the orifice sizes and the pressure regulator setting. A field tech once asked me why his cooler fan ran continuously – the diagram pointed to a missing bypass in the thermostatic valve. You cannot get that from a generic service manual.

Overview: Dimension Drawing for Physical Installation

Page 39 contains an overview dimension drawing. It gives the overall height, width, and mounting bolt patterns for the boom assembly. If you are retrofitting this wiring into a rebuilt chassis, you need those exact coordinates to avoid pinching wire looms against the frame. The drawing also marks the locations of the junction boxes and the grounding studs. A wrong ground point introduces electrical noise that wrecks the CAN communication. The OEM drawing prevents that.

Who Needs This 43-Page OEM Document?

If you own an Atlas Copco ROCKET BOOMER, or you work on one in a shop, this wiring diagram is the only reference that matches the actual machine. Home garage enthusiasts might not see one of these often, but for the technician who does, the cost of downtime is huge. A beginner can use this diagram to learn how a modern drill jumbo routes power and signals – it is the same logic as heavy truck wiring. The audience is anyone who refuses to probe a connector blind. You should buy it before you start the job, not after you blow a fuse.

This manual is 43 pages. That is lean for a full wiring set. No fluff, no marketing pages – just the four diagrams: Air/Water, Electric, Hydraulic, Overview dimension drawing. The file comes as a searchable PDF. You can zoom into the connector details on your tablet while you are under the dash.

Source Authenticity: Why Aftermarket Diagrams Fail

I have seen aftermarket wiring books that list a 3-wire connector as a 4-pin because a copy-house misread the original. That mistake costs a technician an hour and a new controller. This factory manual comes from the same PDF that Atlas Copco Rock Drills AB released. It carries their copyright, their part number 8991 3965 00, and their revision system. If you need to reference a bulletin or a TSB, this is the document you cite. For related schematics, check out the Atlas Copco ST3.5 Wiring Diagram – Factory Electrical Schematics or the Atlas Copco M2D 2006 Wiring Diagram – Factory Electrical Schematics. Another useful companion is the Atlas Copco Boomer S1D Diagrams and Drawings. For general principles of heavy equipment electrical troubleshooting, refer to Automotive Wiring and Automotive Wiring resources.

It is rare to find a factory wiring diagram for a specialized drill rig that has not been photocopied into illegibility. This one is clean.

Does this wiring diagram cover the diesel engine electrical system?

Yes. The electric diagram includes the engine ECU interface, alternator charging circuit, and starter relay. It shows the CAN lines that connect to the boom control module.

Will this manual help me replace a solenoid on the hydraulic pump?

Absolutely. The hydraulic diagram on page 25 labels every solenoid, its resistance, and the connector pinout. You can test coil resistance with a DMM before removing the valve bank. The manual also lists the torque spec for the solenoid mounting bolts – though you need the separate repair manual for engine internal torque values. That data is not in this wiring book.

Can I print the PDF?

Yes. You get a digital access. Print the pages you need for the job. I print the electric diagram and tape it to my toolbox lid.

Is this a reprint or an original?

Original OEM PDF. Scanned from the factory release. No third-party edits or missing pages.

Stop burning connectors and guessing wire colors. Access the Factory Manual and keep your ROCKET BOOMER running on OEM data.