Use the chart in the illustration to find the correct flow

volume specification for Cummins Part No. 3930134,

3930135, 3932224, 3932225, 3933252, 3933253, 3936316,

3936317 fuel transfer pumps, and superseding Cummins

part numbers.

· Draw a straight vertical line above the measured

cranking rpm

· Draw a straight horizontal line from the measured

flow volume to the engine cranking rpm vertical line

to find the intersection point

· Any intersection point above the required flow line

indicates an acceptable flow

· Any intersection point below the required flow line

indicates unacceptable flow and a defective pump

or too much line restriction.

· The maximum inlet restriction to the lift pump is 100

mm Hg [4 in Hg].

Use the chart in the illustration to find the correct flow

volume specification for Cummins Part No. 3930201,

3930202, 3932226, 3932227, 3933254, 3933255, 3936318,

3936319 fuel transfer pumps, and superseding Cummins

part numbers.

· Draw a straight vertical line above the measured

cranking rpm

· Draw a straight horizontal line from the measured

flow volume to the engine cranking rpm vertical line

to find the intersection point

· Any intersection point above the required flow line

indicates an acceptable flow

· Any intersection point below the required flow line

indicates unacceptable flow and a defective pump

or too much line restriction.

· The maximum inlet restriction to the lift pump is 100

mm Hg [4 in Hg].