Diesel Mechanic- Sign on bonus potential!

Job Description

Job Description

As an A-Level Diesel Mechanic , you serve as the shop’s senior technical authority. You are responsible for complex diagnostics, major mechanical overhauls, advanced electrical troubleshooting, and final quality control sign-offs, while mentoring B and C-level technicians.

• Primary Focus: Minimal re-work, rapid diagnostic turnaround, DOT safety compliance, and maximum fleet uptime.
• Service Area: In-shop repairs for the greater Birmingham industrial and transit corridors (I-65, I-20, I-59).

2. Technical Responsibilities

Advanced Engine & Aftertreatment Diagnostics

• Diagnose complex fault codes using OEM computer software (Cummins Insite, Detroit DDDL, CAT ET, PACCAR DAVIE, Bendix ACom).
• Perform deep-dive troubleshooting on modern diesel emissions systems (DPF, DEF, SCR, EGR valves, and NOx sensors).
• Execute forced regenerations, injector cut-out tests, and hydrostatic leak checks.

Powertrain, Mechanical & Heavy Systems

• Perform complete engine teardowns, head gasket replacements, and in-frame overhauls.
• Diagnose and rebuild manual and automated manual transmissions (Eaton Fuller, Allison, Detroit DT12).
• Repair and rebuild differential assemblies, power take-offs (PTOs), drive axles, and wheel ends.

Electrical, Multiplexing & CAN-Bus

• Trace and repair CAN-Bus communication failures, short circuits, voltage drops, and sensor corruption.
• Install and program Electronic Control Modules (ECMs), Body Builders, and telematics systems.

Commercial Brake, Suspension & Alignment Systems

• Diagnose and overhaul air brake systems (ABS modules, air dryers, slack adjusters, brake chambers, and air lines) per FMCSA standards.
• Perform heavy-duty frame, steering linkage, air suspension (air bags, leveling valves), and 3-axle commercial wheel alignments.

3. Diagnostic & Repair Workflow

To ensure efficiency and prevent misdiagnosis, follow this standard execution process for every complex repair order:

1.Vehicle Intake & Fault Verification: 10-15 Minutes.

Review the driver's vehicle inspection report (DVIR) or work order. Connect diagnostic software, pull active/inactive fault codes, and duplicate the issue under realistic load or operating conditions.

2.Root Cause Pinpoint Testing: Variable Timing.

Follow OEM diagnostic trees. Perform physical voltage drop tests, pressure tests (fuel/air/coolant), or scope readings rather than firing the "parts cannon." Document exact failed components.

3.Parts & Repair Plan Authorization: 15 Minutes.

Log required OEM part numbers, estimate labor hours, and submit the ticket to the Service Manager or dispatcher. Verify parts availability before tearing down critical sub-assemblies.

4.Repair Execution & Torque Verification: Per Flat-Rate / Labor Guide.

Execute the repair to OEM factory specifications. Always use a calibrated torque wrench on critical fasteners (head bolts, u-bolts, lug nuts, flywheel bolts). Replace all required single-use gaskets and O-rings.

5.System Reset, Road Test & Quality Check: 20-30 Minutes.

Clear fault codes, perform required ECM recalibrations or resets, and conduct a road test under operating temperature. Perform a final visual check for leaks, loose fittings, or unaddressed safety items.

4. Operational Benchmarks & Quality Control

Service Category

A-Level Quality Standard

FMCSA / Regulatory Reference

DOT Annual Inspections

Complete 133-point mechanical inspection with zero missed out-of-service items.

49 CFR Part 396.17

Air Brake Overhaul

Test hold-down pressure loss (under 3 psi/min single, 4 psi/min combination).

49 CFR § 393.52

Commercial Alignments

Set total toe, camber, and caster within +/- 0.05 degrees of spec to maximize tread life.

OEM / Tire Manufacturer Spec

Aftertreatment Repair

Verify zero active NOx conversion codes and complete full monitor readiness check post-repair.

EPA Heavy-Duty Diesel Standards

Wheel End Service

Measure and set end-play strictly between 0.001" and 0.005" using a dial indicator.

TMC RP 618

5. Safety, Environmental & Shop Leadership Rules

Critical Safety Rule: Lockout/Tagout (LOTO) procedures are mandatory during all frame, electrical, or under-hood service. Never rely solely on hydraulic jacks — always double-block axles with heavy-duty jack stands.

• Environmental Compliance: Ensure all drained fluids (antifreeze, oil, DEF, gear lube) are captured and transferred to proper bulk containment tanks immediately. Keep oil-water separators clear.
• Heat Safety (Birmingham Summer Protocol): Stay hydrated and ensure proper ventilation when operating high-temp forced regens inside shop bays.
• Mentorship: Actively guide B-Level and Apprentice Techs on diagnostic logic, wiring diagram literacy, and tool safety. Review and counter-sign technical work orders completed by junior team members when required.

Company Description

Tire Tech is a premier, high-growth provider of comprehensive commercial vehicle services, heavy-duty diesel solutions, and fleet asset management. We specialize in keeping the lifeblood of our economy moving by delivering rapid, high-quality, and reliable maintenance, tire programs, and emergency roadside services to commercial transport, logistics, construction, and heavy equipment fleets.

Operating with an enterprise-level infrastructure and backed by the institutional capital of Oceanus Capital, Tire Tech is aggressively executing a strategic expansion plan across core regional logistics hubs, including Birmingham, Montgomery, Huntsville, and Biloxi.

We don't just fix vehicles—we engineer operational uptime for our clients. By eliminating service friction points and embedding cost-efficiency directly into fleet operations, we have built a reputation as a trusted mission-critical partner to regional businesses. At Tire Tech, our culture is defined by operational excellence, data-driven management, and a relentless focus on bottom-line gross profit growth. We provide our team with the tools, capital infrastructure, and inventory support required to win major accounts and dominate the regional market.

Company Description

Tire Tech is a premier, high-growth provider of comprehensive commercial vehicle services, heavy-duty diesel solutions, and fleet asset management. We specialize in keeping the lifeblood of our economy moving by delivering rapid, high-quality, and reliable maintenance, tire programs, and emergency roadside services to commercial transport, logistics, construction, and heavy equipment fleets.\r\n\r\nOperating with an enterprise-level infrastructure and backed by the institutional capital of Oceanus Capital, Tire Tech is aggressively executing a strategic expansion plan across core regional logistics hubs, including Birmingham, Montgomery, Huntsville, and Biloxi.\r\n\r\nWe don't just fix vehicles—we engineer operational uptime for our clients. By eliminating service friction points and embedding cost-efficiency directly into fleet operations, we have built a reputation as a trusted mission-critical partner to regional businesses. At Tire Tech, our culture is defined by operational excellence, data-driven management, and a relentless focus on bottom-line gross profit growth. We provide our team with the tools, capital infrastructure, and inventory support required to win major accounts and dominate the regional market.