Field Diesel Mechanic: Repair, Diagnostics & Service

National Tank & Equipment; Alvarado (TX); On-site; USD 48,000 - 64,000; Full time

Job summary

National Tank & Equipment in Alvarado, TX is seeking a Mechanic to inspect, maintain, and repair diesel engines and related rental equipment. This role involves working at our Alvarado location with local field service travel Monday–Friday, 7:00 AM to 5:00 PM, and potential overtime.

You will use diagnostics, perform preventive maintenance, document service activities, and coordinate with service and yard teams to ensure rental readiness.

Qualifications

• 2–4 years diesel mechanic experience in diesel engines, industrial maintenance, automotive repair, heavy equipment, pumps, construction equipment, or related mechanical systems.
• Ability to read equipment information and complete service documentation.
• Must have a valid driver's license for more than 3 years with a moderately clean driving record; DOT physical required.
• Possess or can obtain and maintain a valid TWIC card.
• Hands-on field service experience and strong customer service skills.
• Must provide personal tools and demonstrate mechanical aptitude, including the safe use of hand, power, and diagnostic tools.

Responsibilities

• Inspect pumps, engines, tanks, and related rental equipment and document condition.
• Complete assigned preventive maintenance, repairs, and functional checks.
• Use work orders to record labor, parts, findings, and completed work.
• Maintain tools, service vehicles, and work areas in good order.
• Diagnose mechanical, fuel, electrical, and equipment-performance concerns.
• Perform field service and communicate findings, repair needs, and equipment status.
• Verify repairs and confirm equipment is safe and ready for service.

Skills

Diesel engines

Field service

Customer service

Documentation

Tool handling

Education

High school diploma or equivalent

Tools

Diagnostic tools

Hand & power tools

Job description

National Tank & Equipment in Alvarado, TX is seeking a Mechanic to inspect, maintain, and repair diesel engines and related rental equipment. This role involves working at our Alvarado location with local field service travel Monday–Friday, 7:00 AM to 5:00 PM, and potential overtime.

You will use diagnostics, perform preventive maintenance, document service activities, and coordinate with service and yard teams to ensure rental readiness.