Cummins NT 855 Big Cam IV, New Big Cam IV & 88 Big Cam IV Specifications Manual (3810434-00)

If you're rebuilding an 855 Big Cam IV, this is the book you keep on the bench for the numbers. Cummins printed it in March 1989 as Bulletin 3810434-00, and it covers the Big Cam IV, New Big Cam IV and 88 Big Cam IV versions of the NT 855.

All 83 pages are specifications. There are no step-by-step procedures, so it suits someone who already knows the engine and needs the right figures: general engine data, assembly torques, rebuild specs for the block, head, valve train and fuel system, and the engine test and injection timing data at the back.

What the manual covers

• General engine data: intake, lubrication, cooling, electrical, exhaust and fuel systems
• Engine identification and engine diagrams
• Engine assembly specifications and capscrew torque values
• Cylinder block and cylinder head rebuild specifications and torques
• Rocker lever housing and cam follower assemblies (fixed and MVT injection timing)
• Fuel pump, fuel pump and compressor drive, and injector rebuild specifications
• Lubricating oil pump and oil system capacities and torques
• Cooling system torques and thermostat housing assembly
• Air compressor and fan hub inspection specifications
• Engine testing specifications and injection timing codes

Compatibility

• Models: Big Cam IV, New Big Cam IV, 88 Big Cam IV
• Engine family: NT 855 Series
• Manual type: Specifications manual
• Publication: Bulletin 3810434-00, printed 3/89
• Pages: 83

Before you buy

This manual gives specifications only. For the procedures to strip and rebuild the engine, you'll need a shop manual alongside it. Check the engine dataplate for the model and engine serial number (ESN) before you order.

Your engine's dataplate shows the engine model, the engine serial number (ESN) and the CPL number. Compare those with the models above. If you're not sure, email us the dataplate details and we'll check for you.

File format

PDF download. Nothing is shipped. Opens on a computer, tablet or phone.

We're an independent seller and are not affiliated with or endorsed by Cummins. Brand and model names are used only to identify the engines this manual covers.