Putnam's Automobile Handbook: The Care and Management of the Modern Motor-Car

Chapter 61: TO ADJUST CAM SHAFTS WHICH TIME VALVE OPENING AND CLOSING

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About This Book

A practical manual for early motor-vehicle owners provides step-by-step guidance on purchasing, equipping, operating, and maintaining a four-cylinder automobile. It explains engine principles, carburetor and ignition care, lubrication, cooling, battery, tires, brakes, gears, bearings, mufflers, and chassis troubles, and offers diagnostic methods for common faults. Seasonal advice covers winter heating and cooling, hot-weather management, tire expansion, and fire prevention, while practical chapters address driving technique, skidding, gear shifting, touring, and minimizing fuel and repair costs. Emphasis is on hands-on first-aid repairs and systematic troubleshooting so owners can identify and remedy most ordinary problems and avoid unnecessary garage dependence.

TO ADJUST CAM SHAFTS WHICH TIME VALVE OPENING AND CLOSING

Make sure that push-rod adjustment is right—that a thin card will pass between push rod and valve stem when valve is closed.

Determine direction of rotation of cam shafts.

Set fly wheel so that the mark 1 T. C. (top center) registers with pointer.

Turn fly wheel until mark 10° P. T. C. (past top center) registers with pointer.

Rotate exhaust cam shaft in proper direction until the exhaust valve of No. 1 cylinder has just closed.

Rotate inlet cam shaft until inlet valve of No. 1 cylinder is just about to open.

Mesh the gears and lock them in place.

If No. 1 cylinder is right the others must be.