Industrial Millwrights, Mechanics & Field Service
Keeping crushers, screens, conveyors, and wash plants operating at peak production.
Downtime is the most expensive line item in any aggregate operation. When a component fails, every minute lost directly cuts into your daily tonnage and bottom line. The TSS Group provides skilled millwrights, mechanics, and field service crews equipped with fully stocked service trucks, specialized rigging equipment, and deep operational experience to diagnose problems accurately and execute lasting repairs.
- Planned shutdown and outage execution
- Turn-key contract maintenance packages
- Millwright and maintenance mechanic crews
- Crusher rebuilds, screen and belt work
Maintenance across the whole plant
From a torn belt on a Friday afternoon to a full plant shutdown planned six months out, we cover the mechanical scope end to end.
- Gearbox, bearing, shaft and coupling alignment
- Wash plant, screw, cyclone and pump maintenance
- Structural and chute repair, wear liner replacement
- Crusher rebuilds and liner changes (jaw, cone, impactor, HSI)
- Screen media, screen box repair and replacement
- Conveyor belt splicing, pulley, idler and drive work
Why Aggregate & Materials Producers Trust TSS
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Turn-Key Scope Management:
One specialized contractor handling everything from precision drive alignments to heavy chute liner replacements. -
Cross-Facility Expertise:
Single-vendor efficiency for aggregate quarries, sand and gravel sites, hot-mix asphalt plants, and ready-mix concrete operations.
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MSHA Part 46 Certified Crews:
Experienced field technicians trained to work safely under strict quarry, asphalt, and concrete plant safety standards. -
Rapid & Planned Response:
Flexible scheduling for emergency breakdowns, scheduled weekend outages, or multi-week winter overhaul programs.
End-to-End Plant Maintenance Execution
From a snapped conveyor belt on a Friday afternoon to a full plant overhaul planned six months in advance, our field crews cover your mechanical scope end-to-end. We combine diagnostic troubleshooting with heavy rigging expertise to ensure work is completed safely and correctly the first time.
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Inspection & Diagnosis:
Visual, mechanical, and vibration checks to identify root-cause wear, misalignment, or component fatigue. -
Outage Preparation:
Pre-staging replacement wear parts, rigging gear, and structural steel prior to shutdown windows to maximize wrench time.
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Execution & Alignment:
Precision installation, laser alignment, torque verification, and structural repair using heavy industrial procedures. -
Testing & Return to Service:
Cold rotation, tracking checks, and hot testing under full load to verify operational compliance before turning the plant back over.
Core Maintenance & Repair Capabilities
| Plant Area | Services & Capabilities |
| Crushing Machinery | Full rebuilds, hydraulic system repairs, toggle plate replacements, and manganese liner changes for jaw, cone, impactor (HSI/VSI), and roll crushers. |
| Screening Equipment | Screen media changes (wire, polyurethane, rubber), drive tube rebuilds, exciter mechanism service, spring/isolation swap outs, and structural screen box repair. |
| Conveyor Systems | Mechanical/vulcanized belt splicing, pulley lagging, tail/head pulley swaps, idler replacements, motor/gearbox changes, and belt tracking adjustments. |
| Washing & Pumping | Fine material screw rebuilds, log washer paddle changes, hydrocyclone liner swaps, slurry pump rebuilds, and pipeline wear repairs. |
| Structural & Wear Liners | Custom field fabrication, chute repairs, rock box rebuilds, and wear plate installation (AR400/500, rubber, ceramic, and UHMW). |
Turn-Key Contract Maintenance Packages
For producers who prefer not to maintain a large, full-time in-house maintenance staff, TSS offers tailored Scheduled Maintenance Packages. We design custom service agreements structured around your plant’s operational hours and tonnage targets.
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Routine Preventive Maintenance (PM):
Scheduled weekly, bi-weekly, or monthly mechanical inspections and grease/lube audits. -
Wear Tracking & Planning:
Measurement and forecasting of liner wear on crushers and chutes to prevent catastrophic blowouts.
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Priority Emergency Response:
Guaranteed dispatch protocols for unexpected mechanical failures during critical production runs. -
Predictable Budgeting:
Fixed-rate structures or capped monthly packages with simplified, single-vendor invoicing.
Servicing Stone, Sand, Asphalt & Concrete Facilities
We bring specialized mechanical maintenance to all sectors of the heavy building materials industry. The same crews that rebuild a primary jaw crusher on Monday can service an asphalt drum or concrete batch plant on Thursday, giving you a unified safety program and one dependable point of contact.
Operations We Support:
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Crushed Stone Quarries & Gravel Pits:
Primary, secondary, and tertiary processing circuits. -
Sand & Washing Operations:
Dewatering, classification, and slurry transport systems.
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Hot-Mix Asphalt (HMA) Plants:
Dryer drums, baghouses, cold feed bins, elevators, and pugmills. -
Ready-Mix Concrete Plants:
Batching towers, aggregate bins, weigh hoppers, and screw conveyors.
Frequently asked QUESTIONS
Can TSS provide routine contract maintenance for our plant instead of on-call emergency repairs?
Yes. We build custom scheduled maintenance packages for producers who want routine PMs, liner wear tracking, and planned component swaps. This hybrid approach helps prevent unscheduled breakdowns and lowers overall operating costs under a single, predictable agreement.
How quickly can your field crews mobilize for emergency breakdown repairs?
Our service trucks and field millwrights are stationed across the Mid-Atlantic and Southeast. For critical emergency failures, such as a torn main feed belt or locked crusher, we dispatch fully equipped service trucks and rigging teams immediately to minimize lost production time.
Are all TSS maintenance technicians trained and certified for MSHA compliance?
Yes. Every TSS field technician, welder, and millwright holds up-to-date MSHA Part 46 certification. Before starting work, our site supervisors complete site-specific Job Safety Analyses (JSAs) for every task, including heavy rigging, confined space work, and hot-work operations.
Do you supply replacement parts, or do you install client-provided OEM components?
We work flexibly based on your preference. We can source and deliver high-wear components, bearings, drive parts, and liners directly, or our technicians can install OEM/aftermarket replacement parts that you already have in your site inventory.
What types of crusher liner changes do your crews handle?
Our teams execute manganese and alloy liner changes across all primary crusher brands and types, including jaw die replacements, cone mantle and bowl liner swaps, and HSI/VSI blow bar and anvil changes, complete with backing material application and proper torque verification.
