Fuel System Operation and Tests
Injection pump timing specifications are provided for rotary
pumps (Lucas and Stanadyne). The following charts
include pumps for John Deere Agricultural Equipment,
Construction Equipment, and Commercial and Consumer
Equipment, as well as OEM engine applications. They
apply to Dubuque, Torreon and Saran-built engines.
Other sources for rotary pump timing specifications are as
Agricultural EquipmentDB1216 Specifications
Construction EquipmentSP458 Specifications
If your pump specifications are not listed in the above
sources, refer to DTAC solutions K000413 (Construction
Equipment), K000414 (OEM Engines), or K000415
If your rotary pump application is not listed in any of these
sources, contact the factory DTAC for assistance.
Engine speeds are as preset by the injection pump suppliers. In most
cases, slow idle speed will be reset at the vehicle-producing factory,
depending upon application. Refer to your machine Technical Manual to
verify the final engine speeds for the machine.
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