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Wayne, Journeyman
Category: Medium and Heavy Trucks
Satisfied Customers: 9624
Experience:  worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling
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I have 1972 290 Cummins I need timing marks sequence and

Customer Question

I have 1972 290 Cummins I need timing marks sequence for injectors and valves pictures would be great
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Customer: replied 1 year ago.
this engine is in a tandam dump truck
Expert:  Wayne replied 1 year ago.

Hi I'm Wayne

I will help you with this

use the outer base circle (OBC) method, where the crush of the injector plunger to cup is set by tightening the injector rocker lever adjusting screw to a prescribed torque of 6inlbs.

The valves and injectors ARE NOT SET on the same cylinder.

the exhaust valve lash is 23 thousands

the intake valve lash is 11 thousands.

these lashes and injector lash will be on the data tag also. I know the data tag will read ZERO lash for injectors, the 6 inlbs provides the zero setting. This way will work better

Expert:  Wayne replied 1 year ago.

Hi if this helped you

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Expert:  Wayne replied 1 year ago.


Phone call is a extra $58.00 on top of question value,

I suggest we work from here

Expert:  Wayne replied 1 year ago.


I'm Just following up with you

did my answer help you

let me know ,Please