Engine Rebuild Technician Small or Large Bore (All Levels 1–4)

Riggs Cat•Little Rock, AR

12d•Onsite

About The Position

Riggs Cat Power & Energy is hiring Engine Rebuild Technicians at Levels 1–4, from Apprentice to Lead/Master, for small-bore and large-bore engines. This is precision, shop-based rebuild work, separate from field-diagnostic Engine Technician work. Technicians may develop in either or both specializations, working according to the Riggs Way: Urgent, Selfless, and Excellent. Small-bore work covers C7 through C32-class industrial and compression engines and emphasizes high-volume, fast-turnaround work, throughput, consistency, precision, and preventing comebacks. Large-bore work covers 3500 and 3600 series engines, including G3600 gas engines, across Tier 2, Tier 4, and Tier 4 DGB fleets. It involves heavy rigging, crank deflection checks, and DGB conversions, with emphasis on safe daily heavy lifts and accurate recorded measurements. Technician responsibilities and advancement criteria vary by level and specialization. Apprentices assist with teardown, cleaning, parts handling, staging, accessory removal, and supervised measurements. Technician II and Senior technicians perform increasingly independent overhauls, inspections, failure analysis, quality checks, and coaching. Lead/Master technicians run their specialization’s rebuild line, establish standards, make rework and warranty decisions, coordinate with the Dyno team on test failures, develop apprentices, and provide corrective feedback. The role requires precision-tool use, adherence to torque sequences and OEM service manuals, shop and rigging safety, contamination control, organized parts handling, and accurate job and measurement records. The position may involve extended periods of driving. The employer notes that the job description may change as business needs and job requirements change.

Requirements

Experience expectations vary by level: Level 1 is intended for candidates with 0–2 years, including diesel-program graduates and mechanics from military, on-highway, agricultural, heavy-equipment, truck, automotive, or aircraft backgrounds.
Level 2 requires 2–5 years working on heavy-duty or industrial engines; examples include C4.4–C9 small-bore engines or 3500-class/C27/C32 large-bore engines.
Level 3 is aimed at candidates with 5–10 years of experience who can recognize common failure modes.
Level 4 requires 10 or more years of rebuild experience.
Ability to use precision tools such as micrometers, dial indicators, and torque wrenches; follow torque sequences and OEM service manuals.
Shop and rigging safety habits, including pre-lift checks, and contamination-control practices.
Experience with Cat SIS 2.0 or a comparable service system, such as John Deere Service ADVISOR, Cummins QuickServe/INSITE, Detroit DiagnosticLink, Jaltest, or Noregon JPRO.
Organized parts handling and accurate job and measurement logging.
Level 2 and above: Cat ET, scope-of-repair and parts-reuse guidelines, and AFA I.
Level 2 small-bore specialization: common-rail and MUI troubleshooting.
Level 2 large-bore specialization: knowledge of T2 versus T4 versus T4 DGB cylinder heads.
Level 3: AFA I and II and family training for the applicable specialization.
Level 3 small-bore specialization: strong fuel-system diagnostics and ability to coach constructively.
Level 3 large-bore specialization: Oil & Gas 3500 Overhaul and progress toward G3600 Master Mechanic.
Small Bore Master: full small-bore family training, AFA I and II, strong fuel-system diagnostics, and clear communication with clients and management.
Large Bore Master: Oil & Gas 3500 Overhaul, AFA I and II, large-bore family training, and G3600 Master Mechanic certification or completion within the first year.
Work style: work quickly without cutting corners; do not guess at specifications or sign off on unverified work; own mistakes, identify them early, and take junior technicians’ questions seriously.
Must be able to pass work-related pre-employment physical demands, with reasonable accommodations available for individuals with disabilities to perform essential functions.

Nice To Haves

ASE A1 Engine Repair or T2 Diesel Engines certification.
Prior support on 3600 or G3600 jobs.
GERP experience is a plus for the Large Bore Master specialization.

Responsibilities

Perform engine teardown, cleaning, parts tagging, kitting, staging, turbo and accessory removal, and supervised measurements as an Apprentice.
Assist with large-bore rigging, hoist moves, and 3600 teardowns as an Apprentice.
Perform independent top-end and in-frame overhauls, fuel-system removal and installation, high-pressure fuel-pump inspections, turbo service, and bearing-clearance and end-play checks as a Technician II.
Complete major overhauls, analyze failures on comebacks, provide final quality-control sign-off, and train Level 1 and Level 2 technicians as a Senior Technician.
Perform large-bore crank deflection checks, T4 DGB conversions, coordinate outside machining, and complete 3600/G3600 overhauls as applicable.
Run the rebuild line for the assigned specialization as a Lead/Master Technician.
Set standard work and checklists, make rework and warranty decisions, work with the Dyno team on test failures, build the apprentice pipeline, and provide corrective feedback as a Lead/Master Technician.
For the Small Bore Master specialization, own throughput, comeback rate, scheduling, and metrics; coach technicians toward sign-off; identify repeat errors; and communicate with clients and management.
For the Large Bore Master specialization, own torque and measurement standards, job scoping and hour estimates, and repair-versus-replace decisions; lead 3600/G3600 major overhauls; and handle client escalations and explanations of findings.
Follow shop and rigging safety practices, including pre-lift checks, and maintain contamination control.
Organize parts and accurately log job information and measurements.
Drive for extended periods when required.