The Laser Diesel Engine Fuel Pump Timing Locking Kit 2688 is a comprehensive set of essential diesel engine timing tools It enables both engine locking and fuel pump timing to be carried out on a wide range of diesel engines The kit contains all parts from Laser 2246 and 2247 Diesel Timing Kits The timing belt drives the camshaft fuel injection pump and in most cases the coolant pump on the fron of the camshaft