ASV SR-70/SR-80 Rubber Track Loader Manual Set, 2006–2007 (P/N 2045-830)

The repair procedures, operating guidance, and illustrated parts listings support service planning and replacement-parts identification. Serial-specific catalog notes distinguish assemblies that changed during production.

The service manual covers engine removal and installation and associated external components; it is not an internal Perkins engine-overhaul manual.

Text Search, Bookmarks, and Schematic Detail

Search and diagram detail: The manuals’ main text is searchable. Embedded bookmarks use filenames and open the individual documents and schematic sheets, without chapter-level navigation. The two full-size schematic sheets have no searchable text, and their small labels require zooming. Several circuit and hose-routing drawings within the service manual have faint lines and lettering even when enlarged.

One printable English PDF contains 287 pages, including the publications and schematic sheets listed above plus one additional page. Publication covers and blank pages are included in their listed page counts.

Hydraulic Repair, Undercarriage Service, and Parts Identification

The following highlights are selected examples, rather than a complete contents list. Other topics include the quick-coupler block pressure-release valve and the lap-bar assist gas spring.

• Component removal: Removal and installation of operator-enclosure components, fuel tank, radiator/oil cooler, hydraulic reservoir, joysticks, hydraulic pumps and motors, engine, and lift/bucket cylinders.

• Hydraulic repair: Step-by-step disassembly, inspection, and assembly of cylinders, lift-arm control valve, drive-motor brake and motor sections, tandem drive pump, and auxiliary pump.

• Pressure and flow diagnosis: Charge, auxiliary, lift-arm, drive, and Posi-Power pressure checks, relief adjustments, auxiliary flow testing, and contamination inspection.

• Undercarriage service: Track tension and replacement, drive-sprocket rollers, model-specific idler and bogie-wheel work, hub service, and dedicated press-tool references.

• Electrical troubleshooting: No-crank, no-start, charging, safety-interlock, and float-detent fault checks, supported by wiring schematics and connector information.

• Operation and maintenance: Safety systems, controls, attachment use, operating techniques, pre-operation checks, scheduled service, approved fluids, and service records.

• Illustrated parts: Cab, chassis, cooling package, hydraulic controls, pumps, pilot-generation block, engine, fuse panel, torsion axles, undercarriages, drive tables, lift arm, and quick attach.

The operating sections suit informed operators handling inspection and scheduled maintenance. The deeper repair material is suited to experienced service technicians with proper lifting and hydraulic test equipment; ASV specifically limits internal hydraulic-component disassembly to factory-trained personnel.

Hydraulic Fault Isolation and Component Service

The pressure/flow chapter explains how test results distinguish a faulty drive motor from a faulty half of the tandem pump. Auxiliary-flow troubleshooting separates electrical control faults from charge-pressure, valve-spool, and pump problems.

Circuit information includes hydraulic charge, auxiliary, and drive diagrams, lift-arm control-valve and pilot-generation-block views, and joystick hose routing.

Pump and motor identification: The service specifications identify a Cat/Rexroth A22VG45 tandem arrangement, while the SR-80 parts catalog lists an A22-38.5CC pump. The SR-70 service specifications and parts catalog also differ on drive-motor displacement. Match the installed assemblies to the appropriate listings before selecting replacement parts.

Hydraulic-cylinder service addresses seal and piston-ring orientation. The assembly notes specify fresh hydraulic oil to prevent seal damage.

Build Differences That Affect Parts Selection

The catalogs distinguish cab, harness, hydraulic-control, drive-motor, and hub changes rather than treating every build as interchangeable. Illustrated listings also cover optional air conditioning and cab heaters.

Quick attach and self-leveling: The SR-80 catalog identifies hydraulic quick attach as standard on SEA/MP-2 machines and manual quick attach as standard on SEB/MP-1 machines; the alternative type is optional. Hydraulic quick attach is optional on the SR-70.

Self-leveling is standard on SR-80 SEA/MP-2 machines and optional on SEB/MP-1 and both SR-70 configurations. The SR-80 MP-1 catalog also specifies standard 18-inch tracks, with 20-inch tracks optional.

Early bucket/tilt cylinders: Non-current SR-80 cylinders have a distinct port style and separate service-parts listings. The catalog warns that current and non-current cylinders will not function properly as a mixed pair.

Undercarriage Tooling and Workshop References

Factory tooling references include ASV jack stands P/N 0402-900, test gauge kit P/N 0402-935, and service cart P/N 0402-871.

Hub service identifies tool kits P/N 0403-475 for the SR-70 and P/N 0403-339 for the SR-80. Lift-cylinder removal references pin-removal tool P/N 2045-277; quick-attach coverage includes locking-pin assemblies and pivot pins.

The idler-hub procedure states that center-seal removal destroys the seal, and the SR-70 arrangement omits the retaining ring shown for the SR-80. Reusing that seal or confusing the arrangements can compromise the hub.

Reference data include component torque tables, hydraulic pressure and flow specifications, cycle times, fluid capacities, service parts, lubricants, and model-specific adjustment information.

The troubleshooting chapter distinguishes machine-side faults referred to an ASV dealer from engine-specific faults referred to a Perkins repair facility. Raised lift arms require the specified mechanical brace, and hydraulic pressure must be safely relieved before repair work begins.

A Preview of Track and Belt Tension Specifications

For both models, the track-tension check specifies 3/4–1 inch of deflection under 90 lb of downward force midway between the drive sprocket and front idler.

Accessory-belt data distinguish fan-belt deflection of 3/8 inch from A/C-belt deflection of 7/16 inch. Both are measured under 10 lb of force midway between the respective pulleys, with the engine cold and off.