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Replacing worn copper heat protection sleeves during injector service or cylinder head reconditioning on a Detroit DD5 engine? Follow this step-by-step professional workshop procedure to assemble the ATC W936589033300 collet extractor, clean head wells, pilot fresh sleeves, and driver-seat new copper sleeves to exact factory depth.

Why Improvised Punches & Pry Bars Destroy Detroit DD5 Cylinder Heads

The copper heat protection sleeve on a Detroit DD5 engine forms a critical thermal seal between the combustion chamber and the electronic fuel injector. Because the copper sleeve sits deep inside the narrow cylinder head well, mechanics often attempt to pull stuck sleeves by jamming screwdrivers or cold chisels along the side wall. This improvised approach is disastrous. The hardened steel tip of a chisel easily gouges through the soft copper and carves deep, permanent gouges into the cast cylinder head bore wall. When a new sleeve is driven into a scratched bore, engine oil and coolant leak past the damaged wall directly into combustion chambers. Furthermore, using flat punches to install replacement sleeves crushes the upper copper flange unevenly, flaring the mouth and preventing the fuel injector from reaching full installation depth. Utilizing the dedicated 7.4-pound ATC W936589033300 kit anchors extraction force squarely inside the sleeve bore using an expanding collet assembly. Advancing the forcing arbor pulls the old sleeve straight out without touching head bore walls. During installation, the piloted driver mandrel supports the soft copper sleeve internally and distributes mallet force 360 degrees around the rim, driving fresh sleeves down to exact OEM depth limits.

The 5-Step Copper Sleeve Service Protocol

1. Injector Teardown & Well Prep: Remove the target fuel injector following OEM lockout procedures. Wipe away oil sludge and loose carbon debris inside the injector head well using solvent and a shop vacuum.
2. Insert & Lock ATC W936589033300 Collet Extractor: Lower the expandable collet tool from the ATC W936589033300 kit into the center of the worn copper sleeve. Expand the collet jaws until they lock firmly under the bottom lip of the sleeve.
3. Execute Smooth Straight-Line Extraction: Attach the bridge arbor and turn the forcing nut clockwise using a manual wrench. The collet will draw the carbon-baked copper sleeve straight upward out of the cylinder head bore without contacting bore walls.
4. Clean & Inspect Cylinder Head Landing: Scrub the lower bore seat and sleeve landing using a non-abrasive nylon bore brush and solvent. Vacuum out all debris and inspect the landing with a flashlight to verify clean, burr-free surfaces.
5. Pilot & Drive Fresh Copper Sleeve to Depth: Slide a fresh OEM copper heat protection sleeve onto the piloted driver mandrel of the ATC W936589033300 kit. Lower the assembly squarely into the head well and tap the driver top smoothly using a dead-blow hammer until the driver bottoms firmly against the head deck stop, establishing perfect seating depth.

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