CASE 420 Series III to SV250 specifications

The 465 Series III has separate travel and implement oil circuits

CASE's CCE4300808 sheet identifies a tandem axial-piston travel pump with its own integral charge pump. The equipment hydraulics instead use a gear pump and an open-centre loader valve. A figure labelled pump flow must stay with its circuit: the travel-pump output is not the attachment's available auxiliary flow.

The sheet separates ordinary auxiliary hydraulics from optional high flow and optional attachment case-drain plumbing. The existence of quick connectors does not demonstrate that every one of those options is installed. Identify the attachment's required connections and the actual fitted package before comparing compatibility.

Its spring-applied, hydraulically released parking brakes can engage through several operator-presence conditions, including a raised seat bar or a stopped engine. A no-drive observation should record those conditions and the parking-brake indication. It should not be treated as proof of a worn travel motor without investigating the release and interlock state.

Operating load, tipping load, lift-cylinder breakout and bucket-cylinder breakout are separately labelled in the performance section. They measure different limits. The optional counterweight also changes the documented load figures; it does not make a breakout-force number into a carrying allowance.

The hydraulic reservoir refill is listed separately from total system capacity, and chain tanks have their own per-side entry. Keep those compartments distinct when interpreting a service invoice. The machine's overall hydraulic quantity is not the amount to add to an already filled reservoir.

SV250 and the SR models follow different loader-arm paths

The earlier Alpha brochure divides the range into radial-lift SR machines and vertical-lift SV machines. That distinction explains why nearby engine ratings do not settle which machine suits a loading height. Compare the published reach and dump geometry for the intended task rather than choosing by horsepower alone.

It also distinguishes mechanical drive levers from optional electro-hydraulic controls. The selectable H and ISO patterns belong to the electro-hydraulic arrangement. A machine fitted with the ordinary levers should not be advertised as having selectable patterns because another Alpha loader does.

Optional Ride Control addresses carrying behaviour, while optional self-levelling acts on bucket attitude during raising. They are separate installations. The hydraulic attachment coupler is a further option; its locking function does not demonstrate either ride control or levelling.

This comparison retains the SeriesIII and Alpha designations in separate columns. The older brochure's regional specification should not silently replace a different emissions edition of an identically named SR or SV loader.