Looking for the ASV SC-50 service manual PDF? This 204-page factory manual (OEM #2052-290) covers the SC-50 Rubber Track Utility Vehicle from pre-start checks to complete undercarriage rebuilds. Inside: hydraulic schematics tracing the pilot generation block and auxiliary circuits, wiring diagrams for hunting electrical faults, and troubleshooting charts for no-start, overheat, and hydraulic problems. You get the full maintenance schedule too, with jacking procedures, air cleaner and fuel filter service, and factory fluid specs for engine oil, hydraulic oil, and coolant. Torque the idler wheel retaining nuts to 111 ft-lb dry; sprocket mounting bolt torque is called out per procedure, at 129 and 177 Lb. Ft. Your machine is down. Get the right numbers, not forum guesses. Bookmarked with a full text layer; pull it up on your phone in the shop and search straight to the spec.
What's Inside This ASV SC-50 Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 1 | Cover, Model Identification, How to Use the Manual |
| Safety Overview | 2 | Safety Symbol, Danger, Warning, Caution |
| Machine Identification | 3-5 | Product ID Number, Engine Serial Number, Manual Storage |
| Safety | 6-13 | Features, Cargo Bed Capacity/Gvw, Fire Prevention, Warning Decal Locations, Warning Decals, Dump Box Brace |
| Controls | 14-19 | Switch Panels/Instrument Display, Motion Controls, Throttle/Two Speed, Auxiliary Hydraulics |
| Operation | 20-25 | Pre-Operation, Starting Procedure, Operation Techniques, Cargo Bed Safety |
| Maintenance | 26-47 | Jacking Procedure, Maintenance Schedule, Air Cleaner, Fuel Filter, Hydraulic System, Undercarriages |
| Troubleshooting | 48-50 | No-Start, Hydraulics, Electrical, Overheat |
| Specifications, Warranty, Torque and Fluids | 51-60 | Machine Specifications, Limited Warranty, Standard Torque Guidelines, Recommended Fluids, Service Log, Contact Information |
| Service Manual Overview and Parts Contents | 61-66 | Service Manual Introduction, How the Chapters Are Organised, Master Parts Manual Table of Contents |
| Service Manual: Product Safety | 67-72 | Service Safety Practices, Personal Protection, Lifting and Blocking the Machine |
| Technical Specifications and Circuit Diagrams | 73-84 | Perkins 404C-22 Engine Data, Hydraulic and Electrical Schematics |
| Service Maintenance | 85-98 | Scheduled Service, Fluid and Filter Changes, Track Tension Adjustment |
| Machine Controls and Operator Enclosure | 99-108 | Control Linkage, Instrumentation, Cab and Enclosure Removal |
| Chassis, Fuel Tank, Radiator and Hydraulic Reservoir | 109-124 | Chassis Service, Fuel Tank, Radiator and Oil Cooler, Reservoir Removal |
| Hydraulic Components and Engine | 125-142 | Pump and Motor Removal and Installation, Engine Service Procedures |
| Undercarriage and Hydraulic Component Service | 143-162 | Drive Sprocket, Idlers, Bogies, Track Service, Cylinder and Valve Rebuild |
| Pressure Testing, Troubleshooting and Service Aids | 163-173 | Hydraulic Pressure and Flow Tests, Symptom Charts, Lubricants and Service Tools |
| Master Parts Manual and Schematics | 174-204 | Parts Lists, Cab Fascia, Cab Interior, Chassis, Radiator, Hydraulic Reservoir, Hydraulic Controls, Pilot Generation Block |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Drive Sprocket Roller Bolts/Nuts | 88 +/- 10 Ft./Lbs. | p. 53 |
| Drive Sprocket Retaining Bolts | 160 +/- 10 Ft./Lbs | p. 53 |
| Drive Sprocket Drive Tooth Bolts | 88 ft-lb. | p. 73 |
| 10” Idler Wheel Retaining Nut | 111 ft-lb. | p. 73 |
| 14” Idler Wheel Retaining Nut | 111 ft-lb. | p. 73 |
| Recommended distance from the bottom of the track to the ground | 3-4 inches | p. 94 |
| Cargo Bed Capacity | 4000 lbs | p. 9 |
| Gross Vehicle Weight (G.V.W.) | 9000 lbs | p. 9 |
| Engine Oil Capacity | 11.2 qt | p. 30 |
| Auxiliary Hydraulic Pump Continuous Flow | 16.3 gpm | p. 52 |
| Auxiliary Hydraulic Pump Pressure | 3000 psi | p. 52 |
| Fuel Tank Capacity | 30 gal | p. 52 |
ASV SC-50 Common Problems This Manual Covers
ASV SC-50 rubber track keeps derailing or throwing off the front idler in muddy ground
Jack the machine per the procedure on page 26, then check sag: you want 3-4 inches from the bottom of the track to the ground, following the adjustment steps on page 94. Dig packed mud and gravel out of the roller and idler pockets first; debris alone will throw a correctly tensioned track.
Manual Section: Product Safety and Maintenance Procedures p. 94Rubber tracks cracking and chunking early, lugs wearing unevenly on one side
Check track sag against the 3-4 inch spec on page 94; a loose track slaps and chunks, an overtight one tears lugs off. Inspect rollers and idlers for flat spots and clean the undercarriage daily in abrasive material. When remounting idler wheels, torque the mounting bolts to 111 +/- 10 lb-ft (page 143).
Manual Section: Product Safety and Maintenance Procedures p. 143Engine runs but hydraulics won't operate, travel drive weak in both directions
Check the hydraulic reservoir level and top up with the fluid listed on page 54 before anything else. Replace the hydraulic filter per the schedule in the maintenance section starting on page 26, then work through the hydraulics chart on page 48. The auxiliary pump should develop 3000 psi; pressure well below that points to pump or relief valve trouble.
Manual Section: Troubleshooting p. 50Engine overheating in hot weather, temperature climbing within thirty minutes of loaded work
Blow out the radiator and oil cooler fins with compressed air, working from the fan side outward; packed chaff and dust are the usual cause. Verify coolant level and condition using the long-life antifreeze listed on page 54, and confirm engine oil is full at 11.2 quarts (page 30). The overheating chart on page 48 covers the rest.
Manual Section: Troubleshooting p. 50Grinding or popping noise from drive sprocket area, track jumping teeth under load
Inspect the drive sprocket teeth for hooked or shark-finned wear and check for loose hardware. Replace worn sprockets using the service procedures starting, torquing mounting bolts to 129 +/- 10 lb-ft (page 146) and drive tooth bolts to 88 ft-lb dry (page 73). Reset track sag to 3-4 inches afterward.
Manual Section: Product Safety and Maintenance Procedures p. 169Frequently Asked Questions
What are the torque specifications for the drive sprocket roller bolts and nuts?
The torque specification for the drive sprocket roller bolts and nuts is 88 +/- 10 Ft./Lbs. p. 54
What are the replacement specifications for track rollers?
Sprocket rollers should be inspected every 50 hours of operation and replaced if they are cracked or worn to less than 35% of their original thickness, which is .088 inches. p. 47
What is the engine oil capacity for the SC-50?
The engine oil capacity, including the filter, is 11.2 U.S. quarts. p. 52
What is the recommended service interval for the hydraulic filter?
The hydraulic filter should be replaced every 250 hours of operation. p. 30
What is the fuel tank capacity of the SC-50?
The fuel tank capacity is 30 gallons (113.6 liters). p. 52
What format is this ASV SC-50 manual in?
Immediate download of the complete 204-page searchable Service Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Can I print a copy of this ASV SC-50 Service Manual for the shop?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
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