Heavy Equipment Repair in Jacksonville & Northeast FloridaWhen the iron quits, we come to it.
East Coast Diesel & Marine does mobile heavy equipment repair, diesel service and
marine diesel work out of St Johns, Florida. Excavators, dozers, loaders, diesel trucks and boat
engines, fixed where they sit across fifteen towns and eleven counties. Call and tell us what it is doing.
Somebody picks up at 2am. If we cannot get there fast enough to do you any good, we will say so.
Mobile + Shop
On site or in the bay
24/7
Phone answered
15 Towns
11 counties, FL and GA
Land + Marine
Iron and boats
Equipment repair near you
Looking up equipment repair near me with a machine already down?
That search usually happens standing next to something that will not start,
with a crew already on the clock. So here is the short version. We do mobile equipment repair and diesel
service out of St Johns, Florida, right where St. Johns County meets Duval. We run north into Jacksonville
and Nassau County, south to St. Augustine, Hastings and Palatka, west toward Starke and Gainesville, and
up US 17 into Kingsland, Georgia.
Most calls get handled where the machine sits. Hydraulic repair, electrical faults, cooling, fuel,
brakes and a good share of diesel engine work all get done in the field, which saves you a lowboy, a
permit and two days of downtime. When a job really does belong under a roof, we say so on the first call
instead of taking a machine apart in the sand.
Searching for a diesel mechanic near you gets you a lot of shops that want the machine brought to them.
We are the other kind. Construction iron, farm equipment, diesel trucks and marine diesel engines, same
tech and same tools, different mounting. If you are not sure whether yours is something we handle, call
and describe it. We would rather tell you no on the phone than waste your morning.
Closest is not always fastest. Ask whoever you call how far out they are
today. A shop twenty minutes away that cannot get to you until Thursday is not closer than one an hour
out that rolls this afternoon.
A crawler dozer with a root rake, worked on where it sits.
Boat diesel engines on the St. Johns, the Intracoastal and the trailer. Cooling, fuel, exhaust, starting faults and engine work dockside or in the yard.
On-site equipment repair, or in the shop when it needs to be.
Hauling a machine to a shop costs you a lowboy, a permit and two days of a crew doing
nothing. We do everything we honestly can in the field, and we tell you straight when a job belongs on a
lift instead.
01 / In the field
Service trucks that carry the job
Roadside, job site, pit, farm, fleet yard or boat ramp. The truck rolls with diagnostic gear, hand
tools, fluids and common wear parts, so plenty of calls end the same day they start.
Roadside and job site breakdowns
Hydraulic hose and cylinder work on site
Electrical and computer diagnostics
Starters, alternators, batteries, charging faults
Cooling and fuel system repairs
On-site preventive maintenance for fleets
02 / In the shop
Room, light and a clean bench
Head gaskets, injector work, in frame rebuilds and transmission jobs go better under a roof. When the
fix is a teardown, you hear that before anything gets pulled apart in the dirt.
Engine overhauls and in frame rebuilds
Head work, injectors, turbos, EGR coolers
Transmissions, differentials, drive line
Final drives and travel motors
Hydraulic pump and valve work
Long diagnostic jobs that need a bench
The other half of the name
Marine diesel repair on the St. Johns and the Intracoastal.
A marine diesel is the same engine you find in a loader, bolted
to a different mount and cooled with river water. Which is exactly why the boats around here get treated
as an afterthought by shops that only do land equipment, and by marinas that only do outboards.
We work boat diesel engines dockside, in the yard and on the trailer, from
Julington Creek and Mandarin down through Palm Valley and St. Augustine. Raw water pumps, heat exchangers,
impellers, fuel contamination, hard starting, overheating, exhaust elbows and oil leaks.
Class 8 tractorsDump trucksRoll-offsBox trucksService trucksMarine diesel enginesInboardsGensets
Systems
EnginesHydraulicsElectricalCoolingFuelAftertreatmentTransmissionsUndercarriageBrakesAir systems
Sound familiar
Signs your equipment needs repair now, not next month.
Half of a good repair is knowing what to load before leaving the yard. Here is what we hear
most and what it usually turns out to be.
Boom drifts down on its own
Usually a cylinder that has lost its seal, or a holding valve leaking past. It gets worse under heat and load. Left alone it turns into a scored barrel and a bigger bill.
Losing coolant with no puddle
White smoke, sweet smell, coolant going somewhere you cannot see. Head gasket, cracked head or an EGR cooler. Keep running it and the bearings pay for it.
Cranks but will not stay running
Air in the fuel, a failing lift pump, a plugged filter or a bad crank sensor. Fuel pressure at the rail while it dies tells us which one in about ten minutes.
Dash lit up and the machine derated
Aftertreatment, DEF quality, a sensor that has drifted or a harness rubbed through. Clearing the code without finding the cause just buys you a week. What a derate really means.
Track drive howling or leaking
Final drive planetary wear or a failed travel motor seal. Oil in the hub tells the story. Catch it early and it is a seal and bearings, not a whole drive.
Slow, weak, no power in the cut
Hydraulic pump wear, a stuck relief, a clogged suction screen, or an engine not making rated power. Pressure and flow readings sort it out fast.
Mobile versus hauling it in
What a haul to the shop really costs you.
The repair bill is the part everybody looks at. It is usually not the expensive part.
Run your own numbers down this list before you call a hauler.
Where the money actually goes when a machine leaves the job site
Line item
Haul it to a shop
Mobile repair on site
Transport
Lowboy both ways, plus a permit if it is oversize
None
Loading time
Machine and operator tied up on both ends
None
Crew downtime
Days, not hours, and they are still on payroll
Hours in most cases
Schedule
You wait for a hauler and then a shop slot
You wait for one truck
Rental replacement
Often needed to keep the job moving
Usually not
Liquidated damages
Possible if the job has a completion date
Usually avoided
Some jobs are still shop jobs. A crank that needs to come out is not getting
done in the sand no matter who tells you otherwise. The point is that most of them are not that job, and
nobody should be hauling a machine across the county for a hose, a sensor or a starter.
On the service truck
A pickup with a toolbox will not fix an excavator.
Plenty of what shows up to a breakdown call is a truck and a
hope. Ours rolls with the gear that finishes the job in the dirt, so you are not waiting on a second trip
while a crew stands around.
Straight talk about limits. Some jobs are not field jobs. If the honest
answer is a teardown in the shop, you hear that first instead of watching a machine come apart in the sand.
What comes out
Diagnostic laptop and adaptersRead codes
Hydraulic hose and fittingsMade on site
Welder and torchFab and cut
Air compressor and impactsBreak loose
Jacks, stands and pullersLift safe
Fluids, filters and wear partsCommon stock
Lights for night workAfter dark
County coverage
Eleven counties across Northeast Florida and Southeast Georgia.
Where the service trucks run, and the towns in each one that have their own page.
Duval
Jacksonville
St. Johns
St. Augustine, Hastings, and home base
Clay
Green Cove Springs
Putnam
Palatka
Nassau
Yulee, Callahan, Hilliard
Baker
Macclenny
Bradford
Starke
Alachua
Gainesville
Marion
Ocala
Volusia
Daytona Beach, DeLand
Camden, GA
Kingsland
In between?
Call and ask. Plenty of jobs sit between two of these.
Where we run
Equipment repair near you in fifteen towns.
We are based in St Johns, right where St. Johns County meets
Duval, so the I-95, I-10, US 1 and US 301 corridors are all a normal day for us.
Every town below has its own page with local detail, not the same paragraph
with a name swapped in. Closest to home base, and often the fastest calls we take: Fruit Cove, Julington
Creek, Switzerland, Mandarin, Bartram Park, Fleming Island and Orange Park. Call and ask about those.
Tell us the machine, the symptom and where it sits. We ask a few questions so the right parts come with us.
STEP 02
We tell you straight
Field job or shop job, and roughly when we can be there. If we are too far out to help today, you hear it on the first call.
STEP 03
We diagnose on site
Pressures, codes, readings. You get the actual cause and a number before a wrench turns on the repair.
STEP 04
Back to work
We fix it, test it under load and clean up. You get told what failed and what to watch so it does not happen twice.
Questions we get
Heavy equipment repair questions.
Do you do mobile heavy equipment repair, or do I have to haul it in?
Mobile first. Most repairs happen where the machine sits, on the job site, in the pit, in a fleet yard or on the shoulder. Hydraulics, electrical, cooling, fuel and a lot of engine work get handled in the field. Some teardowns need a roof and a lift, and we tell you which one you are looking at before we start.
What areas do you cover for equipment repair?
Fifteen towns out of St Johns, Florida: Jacksonville, St. Augustine, Hastings, Green Cove Springs, Palatka, Starke, Yulee, Callahan, Hilliard, Macclenny, Gainesville, Ocala, Daytona Beach, DeLand and Kingsland, Georgia. That is eleven counties across Northeast Florida and Southeast Georgia.
Do you really answer the phone at night?
Yes. The phone gets answered around the clock. Whether we can roll right then depends on where you are and what else is down, and you get an honest answer on that first call instead of a maybe.
What kinds of equipment do you repair?
Excavators, dozers, wheel loaders, skid steers, track loaders, backhoes, telehandlers, motor graders, tractors and generators, plus diesel trucks and marine diesel engines. If you are not sure yours fits, call and describe it.
Do you work on marine diesel engines too?
We do, and it is half the name. Same diesel, different mounting and raw water cooling instead of a radiator. Overheating, impellers, heat exchangers, fuel contamination, hard starting, charging faults and oil leaks on boats around the St. Johns River and the Intracoastal.
How much does heavy equipment repair cost?
Nobody can answer that honestly over a web page, and you should be suspicious of anyone who prints a number. It comes down to the machine, the failure, the parts and how long it takes. What we can tell you on the phone is the call out charge and what the diagnosis will involve.
Do you charge to come look at it?
There is a call out charge that covers getting the truck and the tech to you. Call for the current rate. Diagnostic time gets rolled into the repair when we do the work.
How fast can you get to a machine that is down?
Depends on where you are, what time it is and what else is broken that day. Jacksonville, St. Augustine and Green Cove Springs are close to home. Ocala, Gainesville and Daytona are a longer run. Call and we will give you a real window.
Do you work on diesel trucks as well as equipment?
Yes. Class 8 tractors, dumps, roll-offs, box trucks and service trucks. Roadside, in a fleet yard or in the shop. A lot of the same failures show up on both sides.
Can you keep a fleet on a maintenance schedule?
Yes. We service fleets on their own yard on a set schedule so machines get looked at before they leave a crew sitting. Tell us the size of the fleet and how hard it runs.
Machine down
Call it in and get a truck rolling.
Tell us the machine, the symptom and where it sits. If we can help, you will know on the first call. If we cannot get to you in time to do any good, we will say that too.
East Coast Diesel & Marine
Mobile heavy equipment, diesel and marine repair
Serving Northeast Florida and Southeast Georgia
Based in St Johns, FL 32259 (904) 496-2937 · eastcoastdiesel904@gmail.com
Hours: phone answered 24 hours, 7 days
