Part of the Yanmar Repair Manuals.
When the swing motor drags every cold morning until the oil warms up, the crew stands around while you guess at pilot pressure, brake valve, or motor wear. This Yanmar SV100 service manual ends the guessing: 546 pages of factory procedures for the SV100 excavator and its 4TNV98T-SBV turbocharged diesel, delivered as an English PDF you download immediately.
Inside are full teardown and reassembly steps for the engine, fuel injection pump, turbocharger, starter, and alternator, plus hydraulic circuit operation for boom, arm, bucket, swing, blade, and travel. The swing motor, travel motor, pump, and control valve each get their own disassembly and troubleshooting coverage, and undercarriage service covers both rubber and steel crawlers.
Service standards, torque lists, and relief pressure settings sit in their own sections, so you can go from a symptom in the troubleshooting tables straight to the page that fixes it.
What's Inside This Yanmar SV100 Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 11-24 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Hydraulic Equipment Removal and Installation, Hydraulic Hose Installation and Specifications, Air Release of Hydraulic Equipment |
| Technical Data | 25-38 | Machine Specifications, Outline Drawing and Working Area (Quick Coupler, W/O Quick Coupler), Weight List of Main Parts, Lifting Capacity List (SV100) |
| Service Standards | 39-60 | Machine Performance, Engine Standards, Undercarriage (Rubber Crawler, Steel Crawler), Controls, Hydraulic Equipment Cylinders, Implement and Front Attachments, Tightening Torque List |
| Engine | 61-190 | General, Troubleshooting, Inspection and Adjustment, Engine Body, Lubrication System, Cooling System, Fuel Injection Pump/Governor, Turbocharger Disassembly and Reassembly, Starting Motor, Alternator, Special Service Tools, Service Standards |
| Hydraulic System | 191-225 | Control Valve Operation, Hydraulic Circuit Schematic, Circuit Operation (Boom/Arm/Bucket/Swing/Blade/Travel), Non-Deviation Travel, Simultaneous Operations, Hydraulic PTO, Quick Coupler, Pressure Adjustment, Relief Valves, Swing Brake Valve, Cut-Off Valve |
| Hydraulic Equipment | 226-384 | Hydraulic Pump, Control Valve and Spool Sections, Relief Valves, Pilot Valve, Swing Motor, Travel Motor (Specifications/Troubleshooting/Disassembly/Assembly), Pilot Check Valve |
| Adjustment and Repair | 385-492 | Electrical Equipment Layout, Monitor and Alarm Systems, Wiring Diagram, Engine Removal/Reinstallation, Starter and Radiator Service, Undercarriage (Front Idler/Track Roller/Carrier Roller), Controls Adjustment, Swing Bearing, Hydraulic Equipment Removal, Swivel Joint Disassembly, Hydraulic Cylinders, Piping Layout, Implement, Air Conditioner |
| Periodic Inspection and Servicing | 493-496 | Periodic Inspection and Servicing Schedule |
| Fuel, Lube Oil and Grease Recommended | 497-500 | Fuel Specifications, Lubricating Oil Specifications, Grease Recommendations |
| Troubleshooting | 501-540 | Non-Breakdowns (Bucket Release, Arm Movement, Travel Motor, Boom Swing, Oil Level Fluctuation, Quick Coupler), Machine and Engine Troubleshooting, Electrical Equipment on Panel |
| Reference Data | 541-546 | Specifications for Attachments |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Track roller M20 bolt tightening torque | 274.9 to 296.6 ft•lbf (372.7 to 402.1 N•m) | p. 57 |
| Fuel filter filtration area | 775 (5000) sq.in. (sq.cm) | p. 32 |
| Fuel filter element replacement interval | Every 250 hours | p. 93 |
| Suction filter filtration area | 338 (2180) sq.in. (sq.cm) | p. 30 |
| Return filter filtration accuracy | 10 µ | p. 30 |
| Air cleaner filtration area | 11.8 (1.1) sq.ft. (sq.m) | p. 32 |
| Air cleaner element replacement interval | Every 250 hours | p. 93 |
| Fan belt size | A42 | p. 32 |
| Fan belt tension (New part) | 0.276 to 0.354 (7 to 9) in. (mm) | p. 182 |
| Thermostat valve opening temperature | 157 to 163 (69.5 to 72.5) °F (°C) | p. 182 |
| Starter motor pinion projection voltage | 8.0 or less V | p. 151 |
| Starter motor installation bolt (M12) tightening torque | 57.9 to 72.3 ft•lbf (78.5 to 98.1 N•m) | p. 407 |
Yanmar SV100 Common Problems This Manual Covers
Engine cranks but will not start
Air in the fuel system, fuel starvation, a failing injection pump, or worn injector nozzles will leave the 4TNV98T-SBV cranking without firing. The Engine section walks through troubleshooting, injection pump and governor service, and inspection and adjustment procedures to isolate the cause.
Manual Section: Engine p. 61Overheating or dropping coolant performance
A loose fan belt, clogged radiator fins, scale buildup, or a stuck thermostat will push temperatures up on long dig cycles. Cooling system inspection and repair procedures are covered in the Engine section.
Manual Section: Engine p. 61Slow or weak hydraulic response
Sluggish boom and arm cylinders often trace back to low hydraulic oil or a clogged filter before anything expensive is at fault. The Troubleshooting section separates these non-breakdown causes from genuine pump and valve failures so you do not tear into good components.
Manual Section: Troubleshooting p. 501Swing weak or restricted when cold
SV100 owners report the swing circuit acting up until the machine is throttled up and warm, which points at internal leakage or brake release problems in the swing motor. The Hydraulic Equipment section covers swing motor specifications, troubleshooting, and full disassembly and assembly.
Manual Section: Hydraulic Equipment p. 226Machine pulls to one side traveling
When one track lags the other, the fault sits somewhere in the travel circuit rather than the undercarriage itself. The Hydraulic System section explains circuit operation for travel, non-deviation travel, and the relief and cut-off valves that keep both sides matched.
Manual Section: Hydraulic System p. 191Worn idlers, rollers, and track components
Front idlers, track rollers, and carrier rollers wear steadily on abrasive ground and eventually cost you track tension and ride. The Adjustment and Repair section covers undercarriage service for these components along with swing bearing and hydraulic cylinder work.
Manual Section: Adjustment and Repair p. 385Frequently Asked Questions
Which machine and engine does this manual cover?
It covers the Yanmar SV100 excavator fitted with the 4TNV98T-SBV turbocharged diesel engine, including quick coupler and non quick coupler configurations and both rubber and steel crawler undercarriages.
Does it include wiring diagrams and electrical troubleshooting?
Yes. The Adjustment and Repair section includes the electrical equipment layout, the wiring diagram, and monitor and alarm system coverage, and the Troubleshooting section addresses electrical equipment on the panel. p. 385
Are hydraulic pressure settings and adjustment procedures included?
Yes. The Hydraulic System section covers pressure adjustment, relief valves, the swing brake valve, and the cut-off valve, and the manual lists the system relief set pressure for P1 and P2 at 3982 PSI (27.5 MPa). p. 191
Does it list torque specs and service limits?
Yes. The Service Standards section includes machine performance data, engine standards, undercarriage specifications, hydraulic cylinder standards, and a tightening torque list for machine and engine fasteners plus general bolts and nuts. p. 39
What format is this manual in?
Instant PDF download. You get the full 546-page searchable Service Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Is this Yanmar SV100 Service Manual printable?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Does this Yanmar SV100 manual include hydraulic schematics?
Yes. The manual includes hydraulic circuit diagrams, system schematics, and component specifications with pressure ratings.
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