Tanker Fleet Maintenance
for Tractors, Tanks & Trailers
Pre-trips built for each tank trailer open work requests when a check fails, and outside test
reports attach to the unit's record, so the tank is ready to load and the proof is on file.
Where Tank Fleet
Maintenance Breaks Down
Tank fleets carry two calendars: the chassis annual and the tests on the tank itself.
When those dates live on decals and in binders, a trailer gets turned away at the rack.
The leakage test came due last
week. The decal says so.
A valve weeps at the rack.
The load is refused.
The trailer heads back empty.
Dispatch rebooks the load.
The inspector's report sits in
someone's inbox.
The auditor asks for it.
The search starts.
Same tank, same valve,
next load.
A Tank Cleared to Load
Before Dispatch Calls
Squarerigger keeps pre-trips, recurring inspections, outside test records, and repair history for each tractor
and tank trailer. The shop sees what is open before a unit reaches the rack.
Walkarounds That Flag
the Leak Before Loading
Drivers check the items your tanks need.
- Checklist items set by asset type.
- Mandatory fields on each check.
- Each failure opens a work request.
Units Due for Service
Held Back From Dispatch
McLeod gets the word before a load books.
- Service-due alerts sent to McLeod.
- Out-of-service status in TMS.
- Recurring inspections on set dates.
Registered Inspector
Reports Filed to the Unit
The test shop's report lands on the record.
- Outside work orders per test.
- Invoices and reports attached.
- Smart Fill pulls data from PDFs.
The True Cost of
Each Barrel on the Road
Repeat repairs show which tanks to retire.
- Lifetime cost by tank trailer.
- Repair-or-replace on real spend.
- Warranty flagged at work order.
Walkarounds That Flag the Leak Before Loading
Drivers check the items your tanks need.
- Checklist items set by asset type.
- Mandatory fields on each check.
- Each failure opens a work request.
Registered Inspector Reports Filed to the Unit
The test shop's report lands on the record.
- Outside work orders per test.
- Invoices and reports attached.
- Smart Fill pulls data from PDFs.
Units Due for Service Held Back From Dispatch
McLeod gets the word before a load books.
- Service-due alerts sent to McLeod.
- Out-of-service status in TMS.
- Recurring inspections on set dates.
The True Cost of Each Barrel on the Road
Repeat repairs show which tanks to retire.
- Lifetime cost by tank trailer.
- Repair-or-replace on real spend.
- Warranty flagged at work order.
What Safety and the VP
Ask for Before an Audit
Which tanks are clear to load, what the trailer shop is holding, and what each unit costs to run.
Built from the inspections and work orders already on file.
Clear to Load
- Inspections coming due by unit.
- Open defects by tank trailer.
- Units out of service.
In the Trailer Shop
- Open work orders by shop.
- Outside work awaiting reports.
- Parts below minimum.
Cost per Tank
- Repair spend by tank.
- Outside test and repair spend.
- Lifetime cost by unit.
Shop Records Sent to
McLeod and the Ledger
Squarerigger is ecosystem-agnostic. Service-due status goes to McLeod so dispatch stays off a unit, and GL-coded repair costs post to your accounting system.
A Tablet in the Trailer Shop
Runs the Whole System
A trailer tech finds a cracked hose fitting on the morning pre-trip. The request opens on a tablet, and the part is pulled before the truck leaves.
Run a tank pre-trip
from a tablet.
Attach the test report to
the tank's record.
Open a work request from
a failed check.
Check the bin before
pulling a part.
Why Tank Carriers
Choose Squarerigger
We've been listening to fleets since 1986 to build what the work needs.
We know what a turned-away load costs when a test date slipped by a week.
PMs through reporting, in one unified workflow.
Full mobile – the entire system, not just a viewer.
Warranty recovery that practically runs itself.
40 years of fleet shops behind every onboarding.
Works with telematics, ERP, OEM, and parts.
5 machines or 500, same system on all of them.
"All the history fields and stuff are… great. There's so much more
visibility now than there has been."
VP of Operations, Summers Trucking
For the Tank Carrier That
Loads on the First Try
Fewer loads refused at the rack, test reports on file for each tank, and units due for service kept off dispatch.
Up and running in less than 7 days, with hands-on onboarding and data migration included.
Frequently Asked Questions
Does your tanker fleet maintenance software keep tractors and tank trailers in one system?
Yes. Tractors and tank trailers each carry their own asset record, inspection checklists, PM schedules, and repair history. McNay Truck Line runs its tractor shop and trailer shop in Squarerigger.
How do we keep cargo tank test dates from slipping?
Set each recurring inspection on the interval it needs, and automated reminders flag monthly, quarterly, and annual work before it comes due. Walk through your test schedule during the demo.
Our TMS already tracks equipment. Why add a shop system?
Squarerigger runs the shop: inspections, repairs, parts, and outside work. With McLeod, it pushes service-due alerts so dispatch avoids assigning loads to equipment due for service.
Can reports from outside inspectors and test shops live on the unit?
Yes. Outside work orders tie to the asset with labor, parts, invoices, and documents attached. Smart Fill fills in the details from vendor PDFs.
Can we produce inspection records at an audit or roadside stop?
Yes. Inspections save as time-stamped records in the cloud, and compliance reports generate on demand. Registrations and certifications sit in the same archive with renewal alerts.
Will our trailer techs use it?
McNay Truck Line's trailer shop picked it up quickly. Techs work from tablets in the shop, and every rollout includes role-based training.