ASV RC-30 RC-10 Loader 2001 Service Manual (P/N 0304-820)

This 204-page PDF is centered on the ASV RC-30 All Surface Loader and contains the ASV factory Service Manual ASVSP001 (06/01), P/N 0304-820. The file also carries RC-30 Rubber Track Loader Master Parts Manual P/N 2010-125 material from 12/05 and 9/07 printings, the RC-30/RC-50 operation and maintenance guide ASVRC0OM-04 (11/04), and RC-30 electrical and hydraulic schematics. That added material matters when identifying later machines: the original service section specifies the Cat 3013, while later parts data distinguishes the Cat engine through RSA02603 from the Perkins 403C-15 used from RSA02604 onward.

Technical Specifications and Serial-Break Data

The service specifications identify the Cat 3013 as a 1.5-liter engine rated at 31.5 gross hp. The hydrostatic transmission is a Cat AA10VG18 tandem unit (Rexroth) with a 3800 psi drive-pump relief setting, paired with Eaton/Charlynn 4000 Light Series drive motors. The Rexroth auxiliary pump is rated at 10 gpm at 2800 rpm and 3000 psi; the Husko loader valve is also set to 3000 psi and requires 180–220 psi pilot pressure to move the spools.

Charge pressure has a factory serial break: RSA001 through RSA01056 use 450–500 psi, while RSA01057 and higher use 340–380 psi at high idle with warm oil. Cooling data includes a 100 psi cooler bypass relief and 225°F hot-oil sender. The hydraulic reservoir holds 8.0 gal / 30 L, with fluid scheduled at 500 hours and the filter at 250 hours.

Critical fastener data includes 85 ft-lb with Blue Loctite for the drive sprocket retainer bolt, 80 ft-lb with Blue Loctite for the transmission mounting bolts, and 110 ft-lb dry for the drive sprocket drive-teeth bolts. Track adjustment is quantified at no more than 0.75 in. deflection under a 50 lb checking load.

Factory Repair Procedures and Diagnostic Depth

The repair coverage is built around component removal, installation, adjustment, pressure testing, and fault isolation. Major procedures include:

• Hydrostatic drive and undercarriage: tandem pump, auxiliary gear pump, pump drive coupler, drive motor, sprocket and bearing plate, brake cylinder, tracks, wheels, and sprocket rollers.
• Loader and hydraulics: loader/drive joysticks, float magnet, loader valve, lift and tilt cylinders, quick-coupler pressure-release valve, reservoir filter and suction screen, reservoir cleaning, and quick-attach/latch-pin work.
• Cooling and engine-side work: radiator/oil cooler, fan and shroud, fan-guard adjustment, muffler/exhaust flex pipe, battery, and fuel-system bleeding. The bleeding method changes between serial numbers 001–1357 and 1358 and higher.
• Pressure diagnosis: charge-pressure check/adjustment, drive-pressure relief adjustment, and auxiliary-pressure check/adjustment. Listed shop tools include a pressure gauge, wheel extractor, sprocket puller, torque wrench, and crows-foot attachment.

Troubleshooting covers no-crank/no-start faults, loss of hydraulic operation, loader-versus-track function faults, auxiliary flow problems, charging faults, float-detent issues, hydraulic overheating, and track popping. Diagnostic references reach into operator-presence switches, relays, solenoids, grounds, connectors, and charge pressure.

Schematics and Serial-Specific Parts Data

Named technical views include the Filtering and Cooling System, Auxiliary Circuit System, Drive Loop System, Grease Fitting Locations, RC-30 Electrical Schematic, and RC-30 Hydraulic Schematic. The electrical schematic maps seat, lap-bar and optional door interlocks, fuse/relay distribution, starting and glow-plug circuits, float detent, auxiliary hydraulics, and warning senders. The hydraulic schematic identifies the tandem pump, pilot manifold, loader valve, drive motors, brake circuit, cooler/filter path, auxiliary pump, quick couplers, and loader controls.

The parts information is serial-specific rather than a single generic exploded view. It separates hydraulic reservoir builds at RSA02152, drive/auxiliary pump and undercarriage builds at RSA02053, quick-attach builds at RSA02023, and later hydraulic-control/fuse-panel configurations at RSA02786. It also documents a major cylinder difference: current lift and bucket/tilt cylinders use threaded end glands, while early cylinders use external wire-ring retention. For those early cylinders, ASV P/N 0402-946 is the available seal-kit repair item; more extensive repair requires cylinder replacement. Lift-arm cylinder P/N 0304-349 and bucket/tilt cylinder P/N 0304-350 are identified separately.

Repair-Specific Notes and Scope

Several factory cautions show the level of detail. Crossing the fuel-sending-unit wires disables the fuel gauge, while crossing its hoses prevents the engine from running; the float and pickup arrangement is also damage-sensitive. Removing the hydraulic reservoir access-cover bolt completely can drop its oval clamping disk into the tank, while losing the reservoir-gauge rubber washers can cause a leak. The exhaust flex pipe must not be kinked or twisted because it connects a frame-mounted muffler to a vibrating engine and can fail prematurely if distorted.

The service section is not an internal Cat/Perkins engine overhaul manual and does not provide internal tandem-pump or drive-motor rebuilding procedures. For assemblies not specifically covered by removal/installation procedures, it points to the Parts List manual; the parts material in this PDF supplies exploded identification and serial-break data, not additional internal overhaul procedures. The appended operator guide also covers the RC-50, but the service manual, parts sections, and final schematics described here are RC-30-focused.

Before repair work, follow the manual’s machine-preparation and pressure-relief precautions, use the lift-arm support when the arms must remain raised, and keep hot or pressurized hydraulic and cooling systems isolated before opening lines or components.