This 12-phase procedure uses the ATC J47391 puller to safely remove fuel injectors from Detroit Diesel DD13, DD15, DD16 engines. Ensures straight extraction without breakage or bore damage for reliable resealing.

Introduction: Essential Injector Removal for Detroit Diesel Engines

Safe injector removal in DD13/DD15/DD16 prevents damage. The ATC J47391 puller provides controlled force—key for clean bores and reliable repairs.

Phase 1-3: Preparation & Setup

1. Secure engine and relieve fuel pressure – Safety stands
2. Remove rocker assembly – Access injectors
3. Disconnect fuel lines – Drain residual
4. Inspect injector area – Note carbon/seizure
5. Prepare ATC J47391 puller – Verify fit

Phase 4-6: Injector Extraction

4. Engage puller on injector – Secure grip
5. Apply steady pulling force – Straight out
6. Extract injector carefully – No twisting
7. Inspect bore & injector – Check damage
8. Clean injector bore – Remove carbon
9. Repeat for all injectors – Consistent

Phase 7-9: Post-Removal

Phase 10-12: Testing & Finalization

10. Start idle test – Monitor leaks/noise
11. Road/load test – Verify performance
12. Final inspection – Clean/no leaks
13. Schedule follow-up – At 1,000 miles

Critical Safety Warnings: Injector Removal Procedure

Professional Service Documentation

Service Phase	Documentation Required	Complete?
Pre-Service	Injector inspection, pressure notes	□
Extraction	Puller grip photos, bore condition	□
Post-Removal	Damage assessment	□
Reassembly	Torque values	□
Testing	Leak/noise results	□
Final Approval	Signature, warranty log	□

Why ATC J47391 Outperforms Improvised Pullers

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