Part of the Yanmar Repair Manuals.
Put a gauge on the P1 test port and you need one number before you touch the relief valve: 2986 PSI (20.6 MPa). Guess at it and you either starve every cylinder on the machine or work the pump against a setting it was never meant to hold. This Yanmar service manual gives you the verified figure, and the measurement procedure that goes with it.
It covers the ViO30-2 and ViO35-2 compact excavators and the 3TNE82A-EBVC diesel that powers both, across 477 pages: disassembly and reassembly cautions, service standards for the engine, undercarriage, controls and hydraulic equipment, fuel injection and electrical procedures, and hydraulic circuit schematics with circuit operation and pressure adjustment.
Because it is a PDF download, it rides along on a phone or laptop, or as printed pages in the toolbox, so the answer is wherever the machine is parked, not back at the shop.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment | |
| Service Standards | Machine Performance, Engine, Undercarriage, Controls, Hydraulic Equipment, Implement | |
| Engine | Measurement, Inspection and Adjustment, Measurement Procedure, Service Data and Corrective Action, Precautions for Reassembly, Fuel Injection System, Electrical Equipment | |
| Hydraulic System | Outline, Hydraulic Circuit Schematic, Circuit Operation, Pressure Adjustment |
Documents This Manual Refers To
The manufacturer cites these publications by number. We carry them:
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| ViO30-2 | ||
| Boom cylinder U nut tightening torque | 759.5 to 831.9 ft•lbf (1030 to 1130 N•m) | p. 65 |
| Oil seal after press-fitting dimension | 0.177 in. (4.5 mm) | p. 265 |
| Boom speed (Up) allowance | 2.3 sec | p. 49 |
| ViO35-2 | ||
| Travel motor × Track frame (ViO35-2) bolt tightening torque | 57.9 to 72.3 ft•lbf (78.5 to 98.1 N•m) | p. 71 |
| All Models | ||
| Hose clip 16 tightening torque | 1.81 to 2.52 ft•lbf (2.45 to 3.4 N•m) | p. 71 |
| Hose clip 60 & 70 tightening torque | 3.62 to 4.34 ft•lbf (4.9 to 5.88 N•m) | p. 71 |
| Hose clip 70, 48 tightening torque | 1.45 to 2.17 ft•lbf (1.96 to 2.94 N•m) | p. 334 |
| Oil seal capacity to resist pressure | 42.7 PSI (0.3 MPa) | p. 181 |
| V-belt slack | 0.39 to 0.59 in. (10 to 15 mm) | p. 79 |
| Battery type | 65B24L | p. 37 |
| Battery voltage - 5 hrs rate capacity | 12-40 V-Ah | p. 37 |
| Battery cable terminals Nut M6 tightening torque | 2.17 to 2.89 ft•lbf (2.94 to 3.92 N•m) | p. 70 |
