Arthur Bonachella
Instructor at ROBIEL, the tooling manufacturer whose kits are used in every course. Teaches Bosch Piezo, Denso G4S, ISX15, Bosch CRIN 4.2, CAT C15 Series and CAT C7/C9.
/ Cummins ISX15 XPI online course
Simple feels like an easy rebuild. So the valve gets reused, the strokes never get measured, and the injector fires perfectly on the bench, then fails in one to three weeks on your warranty. This course teaches the three measurements that decide whether an ISX15 stays fixed.
/ The real problem
The teardown isn't what hurts a shop. It's the injector that leaves calibrated close enough, comes back under warranty, and takes a second set of parts and the customer's trust with it.
It isn't failing today. That's the trap. Skip the valve to save the cost and, in the instructor's words, in one, two, three weeks it fails and comes back on warranty. The valve is cheap. The warranty claim isn't.
Needle stroke has to land between 0.50 and 0.60 mm. Miss it and no amount of bench tweaking brings full-load delivery back into spec, because the problem is inside the injector, not on the bench.
There are many needle types. Order by eye and you can buy a part that will never calibrate. The method in Lesson 01: take the injector apart and send the exact model to your supplier.
/ Step 03 is the whole course
Everything else is cleaning, grinding and assembly. These three measurements separate an injector that stays fixed from one that comes back.
Controls everything above 1,800 bar. Thicker shim, more stroke, more fuel. Measured after the nozzle nut is torqued to 100 to 120 Nm.
Not calculated. Set by torquing and reading the gauge as it falls: 0.170, 0.107, 0.077, 0.067, 0.060, 0.055. Only if it stalls do you change the shim.
The top screw touches pre-injection only. Bottom it out, back off two turns, fine-tune on the bench, then glue it so it can't back itself out.
/ What's inside
48 minutes filmed at the bench. The camera stays on the injector, and every measurement is taken on screen, including the ones that come out wrong and get corrected.
Every part out, in the right order, without destroying anything.
The longest lesson, and the reason the course exists.
Catch the failure at your desk instead of burning a bench slot on it.
/ Who's teaching
He doesn't teach from slides. Every lesson is filmed at a working bench with ROBIEL tooling, and the camera stays on the part. When a reading comes out of range, the correction is shown on camera.
Instructor at ROBIEL, the tooling manufacturer whose kits are used in every course. Teaches Bosch Piezo, Denso G4S, ISX15, Bosch CRIN 4.2, CAT C15 Series and CAT C7/C9.
He doesn't teach from slides. Every lesson is filmed at a working bench, and the camera stays on the part. When a reading comes out of range, the correction is shown on camera.
/ The offer
One-time payment / Lifetime access
Enroll in the ISX15 course ↗Secure checkout by Hotmart
Start the lessons right away. If it doesn't change how you rebuild an ISX15, request a refund within 7 days of purchase and you get your money back.
/ Before you enroll
Course access, tools, experience and the practical details. The things to know before you enroll.
A vise that holds the injector firmly, a digital dial gauge, a torque wrench reading to at least 120 Nm, diamond grinding tools for the three sealing surfaces, an overhaul kit with o-rings, and a replacement control valve, nozzle, needle and solenoid. Every tool is shown and named on screen as it's used.
The course is filmed on the Cummins XPI injector used on the ISX15 (2010 on) and the X15. Earlier ISX engines (1998 to 2009) used a different, cam-driven injector that this course doesn't cover. The method carries to other common rail families, covered in separate courses.
No. The adjustments in the course are mechanical: shims, strokes and torques read on a dial gauge. Electrical reference values can vary between testers, so check a known-good injector on your own equipment.
Both. Every part is explained as it comes out, so you can start without prior injector experience. The tolerances and calibration methods are what experienced techs come for.
English, with captions.
As soon as Hotmart approves your payment and releases your access. There's no class date to wait for.
The course carries a 7-day guarantee. Request a refund within 7 days of purchase and you get your money back.
/ Ready to get started?
Learn them once, watch them being taken, and stop shipping injectors with your fingers crossed.
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