O’Brien Diesel Repairs

05/06/2026

19/12/2025

Thanks to all our subcontractors, suppliers, customers and especially the old boy for another great year! Time for a break before we do it all again 🍺 🔧

13/11/2025

Caterpillar D8T transmission and bevel gear we rebuilt recently.

13/11/2025

Couple old workhorses 😮‍💨

20/10/2025

Supplied and fitted rebuilt exchange C-15 into this 904 after it came in pressurising the cooling system.

01/10/2025

Big 9900 in for a freshen up!

19/06/2025

CM871 Rebuilt and Dyno tested.

02/06/2025

The newest rocket in the Toowoomba Truck Training fleet is nearly ready to hit the streets!
The mighty Kenworth K104 is powered by a 14L Detroit Diesel and fitted with an Eaton AutoShift — the perfect combo for smooth training sessions and serious grunt.💪🏼

The boys at O’Brien Diesel Repairs have it in the workshop now putting the final touches on so should be ready for training early July. 🚛💨💨

What does that mean for you?

✅ HR and HC Auto (B condition) licensing and training

✅ 5-hour licence-in-a-day courses (HR and HC Auto)

✅ Flexible lesson options: 2-hour HR & HC Auto sessions or 1-hour HR Auto lessons

Special Offer:
Book your HR Auto Licence in a Day course now to lock in the special price of $750 (TMR test booking fee included).

Please note: TMR tests are booked up until late July so book now to avoid even longer wait times

Whether you're just starting out or looking to upgrade, this new lorry will help you get it done, stress-free. So Easy

20/05/2025

ISX out of chassis for a tidy T904 we completed recently.

03/05/2025

Cummins CM871 low liner repair keeping us busy for the weekend