Case 1085B Cruz-Air Wheeled Excavator: Legacy Mid-Class Wheeled Excavator
The Case 1085B Cruz-Air is a mid-class wheeled excavator from Case's legacy wheeled excavator lineage, predating the modern CX-series. Pre-Tier 4 emissions with mechanical injection on early builds and electronic engine control on later production, paired with a hydrostatic dual-path drivetrain on a wheeled chassis.
Where the 1085B Cruz-Air fits in the Case excavator line
The 1085B Cruz-Air is part of Case's legacy wheeled excavator lineage - a predecessor to the modern CX-series excavator line. It sits between the smaller Poclain 81P Cruz-Air and the larger WX95 Wheeled Excavator in the legacy sequence. The Cruz-Air name carried Case's wheeled excavator family for decades and the 1085B represents a mid-class production-grade machine from that era.
Case 1085B Cruz-Air - Quick Specs
- Class
- Mid-Class Wheeled Excavator
- Era
- Vintage / Legacy Wheeled
- Engine
- Case / Cummins Diesel
- Drivetrain
- Wheeled, Hydrostatic Dual-Path
- Serial Plate
- Right frame behind front tire, or operator platform side panel
- Smaller Sibling
- Poclain 81P Cruz-Air
- Larger Sibling
- WX95 Wheeled Excavator
- Modern Equivalent
- Case CX-Series Excavator
Engine, hydraulics, and drivetrain
The 1085B 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 uses a tire-and-axle drivetrain with outrigger or dozer-blade stabilization for digging duty.
The hydraulic architecture is built around a primary main pump feeding the implement and propel circuits with a separate swing circuit driving the swing motor and reduction gearbox. Cylinder bore dimensions vary by production window so seal kit selection requires a measurement.
Common service items on the 1085B 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 1085B
| 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 1085B Cruz-Air Wheeled Excavator?
Call our parts team with your serial number - we'll match the right component to your machine.
Request a PartWhat to verify before ordering
- Serial number. Confirm the serial on the 1085B 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 1085B Cruz-Air still earns a paycheck
The Case 1085B 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 1085B 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.
