Maintenance & Repair Services

Maximizing lifecycle value through proactive care.

Proactive Preventative Maintenance

The key to longevity for any heavy diesel engine is a rigorous maintenance schedule. We don't just fix breakdowns; we help prevent them. By adhering to factory-recommended intervals for filter changes, fluid analysis, and valve adjustments, we help fleet managers extend the operational life of their machinery.

Comprehensive Engine Overhauls

When an engine reaches high hours, a simple fix isn't enough. Our repair capabilities include complete "zero-hour" overhauls. We strip engines down to the block, professionally cleaning, inspecting, and machining every component to meet original OEM tolerances.

Our Service Capabilities

Fluid Analysis

testing oil and coolant for contaminants to predict internal wear.

Fuel System Calibration

injector testing and pump timing for optimal combustion.

Top-End Repairs

cylinder head resurfacing, valve seating, and gasket replacement.

Bottom-End Rebuilds

crankshaft grinding, main bearing replacement, and piston installation.

Advanced Diagnostics

Modern Tier 4 Final and Stage V engines require more than a wrench; they require data. We use advanced diagnostic software to communicate with Engine Control Units (ECUs), reading fault codes and live sensor data to pinpoint issues accurately — solving complex issues like low power, excessive smoke, or regeneration failures without the guesswork.

The Quality Parts Difference

A repair is only as good as the parts used. Our service team has direct access to the highest quality aftermarket components, and we use our own premium Engine Repair Kits for all service work, guaranteeing every component meets our rigorous quality-control standards.

Keep your fleet running

Rebuild with matched, quality-controlled components built for heavy-duty service.

Shop repair kits

At HQMS, our commitment to exceptional customer service extends beyond offering competitive prices. We are proud to introduce our Comprehensive Warranty Program, designed with your peace of mind as a top priority. Here's what our program offers:

Extended Coverage: Enjoy a 6-month unlimited mileage warranty on all our products. This extended coverage ensures that your purchases are protected for a substantial period, giving you peace of mind.
Customer Satisfaction Guarantee: Your happiness is our success. We understand the importance of trust and satisfaction in building lasting customer relationships.
Reliable Support: In the unlikely event that you need to utilize your warranty, rest assured that you will receive the same level of superior customer service that you experienced during your purchase.