Chassis Repairs
Melbourne's specialist for heavy vehicle chassis assessment, structural repair, and integrity restoration — at our Nunawading, VIC, workshop since 1970.
Tandem Drive Truck Suspension Repairs is a licensed heavy vehicle service provider at 30 Rooks Rd, Nunawading, Victoria, specialising in chassis repairs and suspension systems for trucks and buses across the Melbourne metro area since 1970.
Chassis Damage Is a Compliance Issue, Not Just a Mechanical One
A chassis that has taken impact damage, developed a fatigue crack, or suffered a structural failure cannot be assessed from a roadside glance. Under Australian heavy vehicle standards, a compromised chassis is a defect that puts the operator, the load, and every other road user at risk. It's not a fault you can monitor from the driver's seat and hope holds.
The three most common failure modes we see at our Nunawading workshop:
- Impact damage — a collision, kerb strike, or overload event that bends, twists, or cracks a chassis rail. Even a single event can compromise the rail's load-bearing capacity along its full length.
- Fatigue cracking — stress fractures that develop over time from load cycles, often found at cross-member welds or mounting brackets. These cracks start small and grow with every kilometre under load.
- Structural failure — full or partial separation of a chassis member that renders the vehicle unroadworthy immediately. At this point the truck stops at a full stop.
Delaying action on a damaged chassis pushes the repair cost up and the options down. A fatigue crack caught early is a weld repair; left to run, it becomes a section replacement — and in the meantime the vehicle is operating with a defect that a roadside inspector or a load failure won't overlook.
Our Chassis Repair Process Restores Structural Integrity
Step 1 — Full Structural Assessment
We start with a thorough visual inspection of the chassis rails, cross-members, and mounting points, checking for cracks, deformation, and crack origin points. Measurements for twist and bow are taken to establish the full extent of any structural deviation before any repair work is planned.
Step 2 — Structural Diagnosis and Repair Planning
Once the assessment is complete, we determine the repair approach based on the extent of cracking, the vehicle's load-bearing requirements, and whether a weld repair or section replacement is the right call. We'll talk you through what we've found before any work starts.
Step 3 — Repair and Weld by Qualified Tradespeople
Structural welding, reinforcement plating, or cross-member replacement is carried out by Tandem Drive's qualified trades staff at our Nunawading workshop. We use appropriate materials and methods for each repair type to restore the chassis to its designed load capacity.
Step 4 — Post-Repair Inspection Before Return
Before the vehicle leaves the workshop, we check alignment, confirm weld integrity, and verify that the repaired chassis meets the requirements for the vehicle's intended load and operating conditions. The truck goes back to work when the repair is right — not before.
Common Questions About Heavy Vehicle Chassis Repairs
What are the signs that a heavy vehicle chassis needs professional repairs?
Visible cracks at welds, cross-members, or mounting brackets are the clearest indicator. You might also notice door or cab misalignment, unusual handling characteristics under load, or a recent impact event such as a collision or kerb strike. Any one of these warrants a professional assessment before the vehicle goes back on the road.
Can I drive my truck in for a chassis inspection, or does it need to be towed?
If the damage follows a significant impact or you've confirmed a fatigue crack, call us first on 03 9873 5571 so we can advise whether driving the vehicle to our Nunawading workshop is safe. If the damage is suspected rather than confirmed and the truck is mobile and handling normally, driving in is generally fine — but when in doubt, call before you move it.
How long does a heavy vehicle chassis repair take at your Nunawading workshop?
Minor repairs such as a weld repair on a localised crack can often be completed in a day or two. More complex structural work — section replacement, multiple cross-member repairs, or work requiring specialist parts — takes longer depending on the extent of damage and parts availability. Call us with the details and we'll give you a realistic timeframe after we've had a look.
Does a chassis repair affect my vehicle's compliance or roadworthiness certificate?
A repaired chassis must meet the structural requirements for the vehicle's rated load and operating conditions — that's the standard our repairs are carried out to restore. For compliance documentation or roadworthiness requirements specific to your vehicle and registration, confirm those with your relevant transport authority or a licensed vehicle examiner, as requirements vary by vehicle type and jurisdiction.
How much does a truck chassis repair cost in Melbourne?
Cost depends on the extent of the damage, the repair method required, and any parts needed — there's no single figure that applies across the board. The most reliable way to get an accurate price is a free assessment at our Nunawading workshop. Call us on 03 9873 5571 or send an enquiry and we'll get you in for a look.
Get Your Chassis Assessed at Our Nunawading Workshop
A damaged chassis needs professional eyes on it quickly. The sooner it's assessed, the clearer the repair path and the faster your vehicle returns to work.
Call us on 03 9873 5571 or send an enquiry below, and we'll get back to you promptly.