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How to Adjust Crosshead, Injector And Valves

This post is mainly written to introduce how to adjust crosshead, injector and valves of Cummins NT diesel engines correctly. Pay attention to reading and you will learn more. Crosshead Adjustment Note: Crosshead adjustment should always be made before attempting to adjust the valves. 1. Loosen the locknut on the crosshead adjusting screw. Turn the adjusting screw out at least one turn. 2. Hold the crosshead down against its mating valve stem. Turn the adjusting screw back in until it touches the valve stem. Hold the adjusting screw in this position and tighten the locknut. 3. Tighten the adjusting screw locknut to 25 to 30 ft-lb [34 to 41 N*m] torque. Note: When ST-669 Torque Wrench Adapter is used, tighten the locknut to 22 to 26 ft-lb [30 to 35 N*m] torque. 4. Check the clearance between the crosshead and valve spring retainer 1 and 2. Fig. 2-19 with a wire gauge. Tighten must be a minimum of 0.025 inch [0.64 mm] clearance. Valve Adjustmen...

Maintenance Periods of Diesel Generator Set

Notes: 1. The maintenance period of the diesel generator set is calculated according to the working hours and calendar time and subjected to the first satisfaction of the regulations between the both. 2. The clients shall performance overhauling and maintenance in advance according to the actual running state of the diesel generator set. The maintenance period and items of the engine shall be appropriately adjusted according to performances such as: purpose, use state, fuel oil as well as lubricating oil, etc. 1. The requirement of standby diesel generator  set is to keep rapid good starting and inputting standby state. Therefore, it is required to perform regular overhauling and following test running. Maintenance and test running of engine Run for 5-10 minutes under appropriate load each week Run for 5-30 minutes under appropriate load each week Check: Starting performance, lubricating oil pressure, exhaust, smoke as well as vibration, etc. 4...