| Parameter | Specification |
|---|---|
| COGENG Part Number | 203-60-62171 |
| Alternate Number | 2036062171 |
| OEM Equivalent | Komatsu 203-60-62171 |
| Product Type | Rotate / Swing Solenoid Valve |
| Voltage | 24V DC |
| Function | Swing brake release / Swing control |
| Mounting Type | Direct fit, bolt-on |
| Brand | Part Number |
|---|---|
| COGENG | 203-60-62171 |
| Komatsu | 203-60-62171 |
| Interchange | 203-60-62170, 203-60-62172, 203-60-62173 |
| Parameter | Specification |
|---|---|
| Voltage Rating | 24V DC |
| Current Draw | 0.9 - 1.3 A @ 24V DC |
| Coil Resistance | 18 - 26 Ω @ 20°C |
| Duty Cycle | 100% continuous rating |
| Insulation Class | Class F (155°C) |
| Protection Rating | IP67 (dust-tight, waterproof) |
| Electrical Connection | Deutsch DT type (2-pin) |
| Surge Protection | Built-in suppression diode |
| № | Number | Name | Qty |
| 1 | 203-60-62350 | BLOCK | 1 |
| 2 | 203-60-62161 | SOLENOID VALVE | 4 |
| 3 | 203-60-62171 | SOLENOID VALVE | 1 |
| 4 | 07040-11007 | PLUG | 1 |
| 5 | 07002-01023 | O-RING | 1 |
| 6 | 07235-10315 | ELBOW | 1 |
| 7 | 07235-10214 | ELBOW | 1 |
| 8 | 07002-12034 | O-RING | 2 |
| 9 | 20Y-62-16630 | NIPPLE | 4 |
| 10 | 07002-11423 | O-RING | 5 |
| 11 | 07235-10311 | ELBOW | 1 |
| 12 | 07230-20210 | UNION | 1 |
| 13 | 07235-10212 | ELBOW | 1 |
| 14 | 07002-11423 | O-RING | 3 |
| 15 | 01010-81035 | BOLT | 4 |
| 16 | 01643-31032 | WASHER | 4 |
| Symptom | Root Cause | COGENG Solution |
|---|---|---|
| Excavator won't swing | Failed swing brake solenoid coil | New 24V DC coil with surge protection |
| Swing brake stuck engaged | Internal spool sticking | Precision-ground spool, smooth operation |
| Swing brake won't release | Electrical circuit failure | Continuity verified, reliable operation |
| Slow or sluggish swing response | Worn spool, internal leakage | Tight spool-to-body clearance |
| Swing drifts when parked | Internal leakage in solenoid | New seals, precision spool |
| Intermittent swing operation | Loose electrical connection | Deutsch DT connector, secure fit |
| Swing function works then stops | Coil thermal failure | Class F insulation (155°C) |
| External hydraulic leak | Worn O-rings or seals | New HNBR seals included |
| Fault code / swing warning light | Solenoid circuit open/short | 100% electrical testing |
| Swing jerky or erratic | Contaminated pilot oil | Not valve issue; check filters |
| No swing brake release sound | Failed coil or stuck spool | New complete valve assembly |
| DTC | Description | Resolution |
|---|---|---|
| P0990 | Swing brake solenoid circuit | Test resistance; replace if out of spec |
| P0991 | Swing brake solenoid performance | Replace rotate solenoid valve |
| P0992 | Swing brake solenoid stuck | Replace rotate solenoid valve |
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