Case Poclain 81P Cruz-Air Wheeled Excavator: Vintage Mid-Class Wheeled Excavator
The Case Poclain 81P Cruz-Air is a vintage mid-class wheeled excavator from the era predating the modern Case WX-series and CX-series. Built on a wheeled chassis with hydrostatic drive, it sits in the legacy Case excavator lineage between the 125B and the 1085B Cruz-Air.
Where the Poclain 81P Cruz-Air fits in the Case excavator line
The Poclain 81P Cruz-Air is part of Case’s legacy wheeled excavator lineage - a predecessor to the modern CX-series excavator line. It sits between the 125B Excavator and the 1085B Cruz-Air in the legacy sequence, on a wheeled chassis with hydrostatic dual-path drive and outrigger or dozer-blade stabilization.
Case Poclain 81P Cruz-Air - Quick Specs
- Class
- Mid-Class Wheeled Excavator
- Era
- Vintage / Legacy
- Engine
- Case / Cummins Diesel
- Drivetrain
- Wheeled, Hydrostatic Drive
- Stabilization
- Outrigger / Dozer Blade
- Smaller Sibling
- Case 125B Excavator
- Larger Sibling
- Case 1085B Cruz-Air
- Modern Equivalent
- Case CX-Series
Engine, hydraulics, and drivetrain
The Poclain 81P Cruz-Air runs a Case or Cummins diesel through a hydrostatic dual-path drivetrain. Pre-Tier 4 emissions - mechanical injection on the earliest builds, electronic engine control on later production. The main hydraulic pump drives boom, dipper, bucket, swing, and propel through mechanical or electrohydraulic control valves. The wheeled chassis carries tire-and-axle drivetrain components with outrigger or dozer-blade stabilization.
Service-friendly architecture: accessible hydraulic plumbing, mechanical-feel controls on earlier builds, and a swing system built on a serviceable bearing and reduction gear that rewards regular grease intervals.
Common service items on the Poclain 81P Cruz-Air
- Engine internals: Pistons, rings, sleeves, bearings, head gaskets. Mechanical-injection or early-electronic depending on production year.
- Fuel system: Injection pump, injectors, lift pump, primary and secondary fuel filters.
- Cooling system: Radiator, water pump, thermostat, fan, hoses, belts.
- Hydraulic system: Boom, dipper, bucket, and swing cylinder seal kits, main pump rebuild, control valves, hoses.
- Boom and dipper: Pin and bushing service at every joint, bucket pins, thumb attachment hardware, quick-coupler service.
- Wheeled chassis: Tires, wheel bearings, axle and final drive service, suspension components if equipped.
- Swing system: Swing motor and reduction gear service, swing bearing inspection, swing brake.
- Electrical: Starter, alternator, wiring harness, gauges, switches.
- Cab glass and wiper: KHN16820 24-inch wiper blade, KHN3046 front lower glass, and KHN2632 front upper glass cross-fit across Case and Link-Belt excavators.
- Operator station: Seat, joystick controls, pedal linkage, instrument panel, cab HVAC.
Parts and cross-fit components for the Case Poclain 81P
| Category | Common Parts | Browse |
|---|---|---|
| Engine | Pistons, rings, sleeves, bearings, gaskets | Browse Engine |
| Fuel System | Injection pump, injectors, lift pump, filters | Browse Fuel |
| Cooling | Radiator, water pump, hoses, belts | Browse Cooling |
| Hydraulics | Main pump, swing motor, cylinders, seal kits, valves | Browse Hydraulics |
| Boom / Dipper | Pins, bushings, bucket and quick-coupler hardware | Browse Boom / Dipper |
| Wheeled Chassis | Tires, wheel bearings, axles, final drives | Browse Chassis |
| Swing | Swing motor, reduction gear, swing bearing | Browse Swing |
| Cab Glass / Wiper | KHN16820 wiper, KHN3046 lower glass, KHN2632 upper glass (Case/Link-Belt cross-fit) | KHN16820 Wiper Blade |
| Electrical | Starter, alternator, harness, gauges | Browse Electrical |
| Operator Station | Seat, joysticks, pedal linkage, gauges | Browse Operator Station |
Need a part for your Case Poclain 81P Cruz-Air Wheeled Excavator?
Hydraulic components, swing-system parts, and cab glass are the highest-value items on a legacy wheeled excavator. Call our parts team with your serial number.
Request a PartWhat to verify before ordering
- Serial number. Confirm the serial on the Poclain 81P Cruz-Air before ordering year-specific parts.
- Engine serial. Engine internal parts must match the engine serial number.
- Hydraulic cylinder bore. Cylinder seal kit fit depends on bore dimension - measure before ordering.
- Production-window revision. Engine and hydraulic components saw multiple revisions during the production run.
- Bucket and quick coupler. Quick-coupler interface varies - confirm before ordering attachment-side hardware.
Why the Poclain 81P Cruz-Air still earns a paycheck
The Case Poclain 81P Cruz-Air is a legacy wheeled excavator from the era before the modern CX-series. Pre-Tier 4 emissions, mechanical or early-electronic injection, and service architecture that rewards a wrench, a manual, and a parts catalog. For owners and operators running these machines, parts availability through the legacy Case service network remains broad.
Maintenance priorities on a Poclain 81P Cruz-Air: clean fuel and quality filtration, hydraulic oil at temperature with clean filters, swing-bearing lubrication, tire pressure and wheel-bearing service, and pin and bushing service at every working joint. Broken Tractor maintains parts coverage across the Case legacy excavator family.
