ATC6010 CAT Injector Sleeve Remover & Installer – C-10, C-12, C-15, 3406E (9U-6891)

The ATC6010 Injector Sleeve Remover & Installer is a precision, heavy-duty service tool designed for injector sleeve (cup) removal and installation on Caterpillar C-10, C-12, C-15, and 3406E diesel engines. Engineered as a direct functional equivalent to Caterpillar OEM tool 9U-6891, this tool enables technicians to service injector sleeves safely, accurately, and without damage to the cylinder head bore.

Injector sleeves seal the injector to the cylinder head and protect the head from combustion heat and fuel exposure. Over time, sleeves can seize, corrode, or lose sealing integrity. Improvised removal methods risk scoring the head bore, distorting the sleeve seat, or installing new sleeves out of square, leading to fuel leaks, combustion gas intrusion, or premature injector failure. The ATC6010 applies straight, controlled force to extract worn sleeves and install new ones to the correct depth and alignment, supporting OEM-level repair quality.

Built for professional diesel technicians, dealership service departments, fleet maintenance facilities, and engine rebuild shops, the ATC6010 delivers durable, repeatable performance in demanding shop environments.

---

Key Features & Benefits

• Engine-Specific Tooling: Designed for CAT C-10, C-12, C-15, and 3406E injector sleeve service.

• OEM-Equivalent Replacement: Matches the form and function of Caterpillar 9U-6891.

• Damage-Free Service: Removes seized sleeves and installs new sleeves squarely without harming the cylinder head.

• Controlled Installation Depth: Ensures proper sleeve seating for reliable sealing and injector alignment.

• Professional-Grade Construction: Built for repeated heavy-duty use in diesel service environments.

Typical Applications

• Injector sleeve removal and installation during injector replacement.

• Top-end service and engine rebuilds on Caterpillar C-10, C-12, C-15, and 3406E engines.

• Correction of fuel, compression, or combustion leaks related to worn or improperly seated injector sleeves.

Why It Matters

Injector sleeves play a critical role in sealing and injector positioning. Improper sleeve service can cause fuel leakage, combustion blow-by, coolant contamination, and costly repeat repairs. The ATC6010 Injector Sleeve Remover & Installer ensures sleeves are serviced correctly the first time, supporting proper injector operation, stable combustion, and long engine life.