Base Engine Components Service Tools
ST-647
Standard Puller
Used to remove drive pulleys, impellers, air compressor coun-
terweights, etc.
ST-669
Torque Wrench Adapter
Used to torque locknut without disturbing the setting of the valve,
injector or crosshead.
ST-763
Piston Ring Expander
Designed to install piston rings on the piston without damaging
or distorting the rings.
ST-835
O-ring Assembly Tool
Used to assemble the o-ring to the 1/2 inch throttle shaft. Also
used to install o-rings on the new style cooling nozzles.
ST-997
Crankshaft Oil Seal Driver (Rear Seal)
Used to drive the crankshaft oil seal into the rear cover. Also can
be used to align the rear cover to the crankshaft.
ST-1012
Hydrostatic Tester
Used to check for coolant leaks in the cylinder heads. Used with
water tester adapter plate, Part No. ST-1013.
Base Engine Components Service Tools Section 7 - Base Engine Components
N14Page 7-6
The following special tools are recommended to perform procedures in Section 7. The use of these
tools is shown in the appropriate procedure. These tools can be purchased from your local Cummins
Authorized Repair Location.
Tool No. Tool Description Tool Illustration
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