The new goAardvark is here! Find out what's new.

goAardvark
Book a demo

PM schedule · Wheel loader

Case 821G maintenance schedule

Service intervals, fluids and filters for the Case 821G. Full specs, part numbers and heavy-duty intervals are in goAardvark.

  • Series G Series (Stage V, Europe)
  • Emissions EU Stage V
  • Size class 200–225 hp
Snapshot my fleet

Source: CASE 721G/821G Stage V Wheel Loader Operator's Manual · Last verified October 29, 2026 · Always confirm with the operator's manual for your serial number

What's due next?

Enter the hour meter (SMU) reading to see what's coming up.

hr

  • 1,500 hr service

    Includes 1,000 hr, 500 hr, 250 hr

    at 3,000In 160 hr

  • 250 hr service

    at 3,250In 410 hr

  • 500 hr service

    Includes 250 hr

    at 3,500In 660 hr

  • 250 hr service

    at 3,750In 910 hr

Shows the next four service stops. Red means due within 50 hours; amber, within 250. goAardvark tracks this automatically from telematics hours, across every make in your fleet.

The short answer

On the Case 821G, change the engine oil every 500 service hours. Change the hydraulic oil every 1,000 hours.

Service intervals

Pick an interval. Each service includes everything from the shorter intervals that fall on the same hour.

Every day

0 of 2 done

Filters 2 of 14 shown

FilterPart numberChange at
Engine oil filterAvailable in goAardvark500 hr
Fuel filterAvailable in goAardvark500 hr
Fuel pre-filterAvailable in goAardvarkAvailable in goAardvark
Hydraulic oil filterAvailable in goAardvarkAvailable in goAardvark
Transmission oil filterAvailable in goAardvarkAvailable in goAardvark
Engine breather filterAvailable in goAardvarkAvailable in goAardvark
Primary engine air filterAvailable in goAardvarkAvailable in goAardvark
Secondary engine air filterAvailable in goAardvarkAvailable in goAardvark
Cab air filterAvailable in goAardvarkAvailable in goAardvark
Cab air pre-filterAvailable in goAardvarkAvailable in goAardvark
Cab air recirculation filterAvailable in goAardvarkAvailable in goAardvark
DEF/AdBlue tank vent filterAvailable in goAardvarkAvailable in goAardvark
SCR supply module filterAvailable in goAardvarkAvailable in goAardvark
DEF/AdBlue tank suction filterAvailable in goAardvarkAvailable in goAardvark

All 14 filters with part numbers are in goAardvark.

Unlock full specs

Fleet PM snapshot

Add up to 5 machines to see when each one hits its next service. This is free and needs no sign-up.

MachineHours nowHours per weekNext serviceAround

1,500 hr at 3,000

160 hr
Dec 8
1 of 5 machines
This snapshot is out of date as soon as the machines run. If your Case 821G runs 52 hr a week instead of 40, its service lands around Dec 2. If it sits at 24 hr a week, around Dec 27. goAardvark reads real hours from Cat, Deere, Komatsu and Volvo telematics every day, so the dates stay right.
See it live with your fleetRequest a demo and we'll show these machines in goAardvark.

Official Case maintenance resources

CoverageThrough dealer

CASE ProCare

Standard on new Case large/full-size wheel loaders, excavators, dozers and motor graders: 3-yr/3,000-hr full machine warranty, 3-yr/2,000-hr planned maintenance and a myCASEConstruction telematics subscription.

CoveragePurchase

CASE PlusCare

Optional planned maintenance agreements, purchased protection plans (extended coverage) and damage insurance offered through Case dealers.

TelematicsSubscription

myCASEConstruction

Case fleet portal and app with machine location, alerts, fuel data and maintenance reminders for telematics-equipped machines.

PartsPurchase

CASE parts, fluids and filters

Genuine Case filters, fluids and service parts, orderable through the MyCNH Store for dealer pickup or shipping; the page also links shop manuals.

Fluid analysisPurchase

CASE fluid and lubricant kits (incl. fluid analysis kits)

Case online store category with fluid analysis kits and service kits containing parts for recommended service intervals.

ManualThrough dealer

Case dealer locator (operator and service manuals)

Find a Case dealer to order operator's manuals, service manuals and planned maintenance.

ManualFree

Case brochures and spec sheets

Case North America brochure library with model spec sheets that list service capacities.

Your 821G isn't the only machine due for service

Most fleets run several makes side by side. Each has its own manual, intervals and telematics portal. goAardvark pulls hours from all of them and builds one PM schedule for the whole fleet.

Book a demoSnapshot my fleet

Compare similar wheel loaders

Cat

950 GC

Tier 4 Final / Stage V

Wheel loaderCapacities
View schedule →
John Deere

644 P-Tier

P-Tier

Wheel loaderDaily–6,000 hr
View schedule →
Komatsu

WA380-8

-8

Wheel loaderCapacities
View schedule →
Komatsu

WA470-8

-8

Wheel loaderCapacities
View schedule →

Frequently asked questions

Every 500 service hours under normal operating conditions. Confirm the interval for your serial number in the operator's manual.

Sources

Case and other product names are trademarks of their owners. goAardvark is not affiliated with any equipment manufacturer. This page summarizes public information for planning; your operator's manual is the authority for your serial number.

Preventive maintenance · Field checklist

Case 821G PM checklist

Unit #
Serial number
Hour meter
Technician
Date

Daily

Service taskComponent
Check engine oil levelEngine
Grease bucket and attachment fittingsLinkage

Weekly

Service taskComponent
Grease machine fittingsMachine
Check hydraulic oil levelHydraulics
Check transmission oil levelDrivetrain
Check engine coolant levelCooling

100 hr

Service taskComponent
Grease machine fittingsMachine
Grease drive shaft slip jointDrivetrain

250 hr

Service taskComponent
Clean cab air recirculation filterCab
Clean cab air pre-filterCab
Clean cab air filterCab
Check tire inflationAxles
Check drive beltEngine

500 hr

Service taskComponent
Change engine oilEngine
Replace engine oil filterEngine
Replace fuel pre-filterFuel
Replace fuel filterFuel
Drain fuel tank sedimentFuel
Check front and rear axle oil levelAxles
Check ROPSCab
Check battery fluid levelElectrical
Replace DEF tank vent filterAftertreatment
Clean SCR in-line filterAftertreatment

1,000 hr

Service taskComponent
Grease pivot pointsLinkage
Replace hydraulic oil filterHydraulics
Replace drive beltEngine
Replace cab air recirculation filterCab
Replace cab air pre-filterCab
Replace cab air filterCab
Replace engine breather filterEngine
Change front and rear axle oilAxles

1,500 hr

Service taskComponent
Change transmission oilDrivetrain
Replace transmission oil filterDrivetrain
Clean transmission breatherDrivetrain

2,000 hr

Service taskComponent
Change hydraulic oilHydraulics
Change biodegradable hydraulic oilOnly if biodegradable hydraulic oil is used.Hydraulics
Check hydraulic systemsHydraulics
Replace primary engine air filterEngine
Replace secondary engine air filterEngine

4,000 hr

Service taskComponent
Replace SCR supply module filterAftertreatment
Clean DEF tank suction filterAftertreatment
Change engine coolantCooling

First 100 hr

Service taskComponent
Check wheel nut torqueAxles
Clean SCR in-line filterAftertreatment
Change engine oilEngine
Replace engine oil filterEngine
Replace fuel pre-filterFuel
Replace fuel filterFuel
Replace hydraulic oil filterHydraulics
Change front and rear axle oilAxles

When required

Service taskComponent
Drain water from fuel pre-filterFuel
Clean DEF tank neck filterAftertreatment
Replace urea quality sensorAftertreatment
Replace DEF tank suction filterAftertreatment

Source: CASE 721G/821G Stage V Wheel Loader Operator's Manual. Always confirm with the operator's manual for your serial number.