Agricultural
Tractors, harvesters, irrigation engines, and farm support equipment, including older units that are long out of production.
Heavy-duty, industrial, and agricultural starter and alternator service
Farm equipment, trucks, oilfield gear, transit fleets, and industrial machines run starters and alternators that a general parts counter often cannot look up. A&J Summit Ridge Holdings LLC works on 6v, 12v, and 24v units across all of those applications, covering testing, repair, rebuild support, and parts sourcing.
Equipment we work on
The same starters and alternators turn up across very different industries. These are the applications we support.
Trucking
Class 7 and 8 trucks and trailers, where a 24v cranking problem takes the whole load off the road.
Oilfield
Field engines, pumps, and support equipment working a long way from the nearest parts counter.
Transit
Buses and fleet vehicles with high duty cycles and heavy accessory loads on the charging system.
Industrial
Generators, compressors, plant equipment, and stationary engines that have to start reliably on demand.
Not on the list?
If it runs a starter or an alternator, send the details. We would rather look at it than have you guess.
Why heavy-duty units are a different job
Heavy-duty starting and charging is not just a larger version of a car system. The differences are what make specialist help worth the trip.
- 24v systems are common. Series batteries, higher voltage, and different failure behavior from the 12v systems most shops see all day.
- Cranking loads are far larger. Big-displacement diesels draw enormous current, so cable, connection, and contact condition matters much more.
- Duty cycles are punishing. Frequent starts, long idles, heavy accessory loads, dust, vibration, and heat all shorten the life of brushes and bearings.
- Part numbers are not always in retail catalogs. Many units are identified by casting and label numbers rather than a vehicle lookup.
- Units are often obsolete. When a replacement is no longer made, a starter rebuild or alternator rebuild is frequently the practical route.
- Downtime is the real cost. Which is why testing to confirm the fault beats replacing parts on a guess.
What to send for a quote
Heavy-duty units are often easier to identify from the unit itself than from the machine, so photos of the label and casting are worth more than the model year.
- Equipment. Machine type, make, model, engine, and application.
- System voltage. 6v, 12v, or 24v, if you know it.
- Part details. Part number, label numbers, output rating, or casting numbers.
- The problem. No crank, slow crank, charging fault, noise, or repeat failures on the same machine.
- Photos. The unit, the label, and the mounting end. These answer most identification questions on their own.
Common questions
Do you work on heavy-duty, farm, truck, oilfield, or industrial units?
Yes. Industrial, agricultural, trucking, oilfield, and transit equipment is the core of what we do. That covers starter and alternator sales, testing, repair, rebuild support, and parts sourcing for 6v, 12v, and 24v systems.
Do you handle 24v systems?
Yes. We work with 6v, 12v, and 24v starters and alternators, which covers most heavy truck, agricultural, and industrial equipment.
What if the part number is not in a standard catalog?
Send photos of the label and any casting numbers, along with the equipment details. Parts sourcing is one of our services, and identifying units that a general parts counter cannot look up is a normal part of the job.