Common questions

What should the torque be on a NTC 400?

What should the torque be on a NTC 400?

If your CPL is 806, 821, 833, 903, or 904 then the proper injector torque is 105 inch pounds doing the outer base circle method. That is the only method I have ever used. and it works perfectly. Injector first then the valves intake .014 and exhaust .027 Jake’s at .018.

How to set Cummins NTC 855 Big Cam Top Stop injectors?

Setting Cummins NTC 855 Big Cam top-stop injectors 1. Loosen all valves and injectors so that the engine turns freely while keeping the push rods in place. 2. Rotate engine clockwise until the “A, OR 1-6 VS” timing mark on the accessory drive pulley is aligned with the timing… 3. Set the injector …

What is the correct CPL for a NTC 400?

The manual specs are the same as cummins manual. Hope that helps. Adjusting valves and injectors on the same cylinders are for electronic engines, the way the manual directs you is correct. If your CPL is 806, 821, 833, 903, or 904 then the proper injector torque is 105 inch pounds doing the outer base circle method.

How to set injectors on a Cummins 400?

No CPL. Need to know injector setting and procedure for a Cummins Big Cam 400. I have a manual for and have rebuilt a Cummins 444 with STC injectors. My manual does not give me injector information on the 400 BIg Cam. I know that this is not an STC set up and I know it is not a small cam. I would appreciate any ideas on how to set the injectors.

Setting Cummins NTC 855 Big Cam top-stop injectors 1. Loosen all valves and injectors so that the engine turns freely while keeping the push rods in place. 2. Rotate engine clockwise until the “A, OR 1-6 VS” timing mark on the accessory drive pulley is aligned with the timing… 3. Set the injector

How are the valves on a Cummins injector adjusted?

Valve spring retainer to crosshead clearance. The “VS” markets used when adjusting the injectors is also used when adjusting the valves; however, the valves to be adjusted are not on the same cylinder as the injector. See Table 2-3 for the correct valves to adjust.

How do you set NTC on a Cummins n855?

Use the IBC (inner base circle) method to set NTC,s when top-stop injectors are fitted. Essentially this means that the setting points, setting order and setting values for the valves and injectors are different from the OBC method described above, but you still use the marks on the accessory drive pulley and the gear case for orientation.

How do you adjust the injector rocker torque?

Refer to the engine model and CPL for the correct injector rocker lever adjusting screw torque value. Use a dial type torque wrench to tighten the injector lever adjusting screws to the specified torque. If the screw causes chattering during setting, repair the screw and lever as required.

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Ruth Doyle