Service parts for the T90C
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Prime power | 72 kW |
|---|---|
| Voltage options | 208 V, 220 V, 240 V, 440 V, 480 V |
| Phase | 3 phase,1 phase |
| Rated current | 300 A |
| Circuit breaker | 300 A |
| Dimensions (L×W×H) | 2790×1190×1620 mm |
| Dry weight | 2445 kg |
Maintenance & consumables
for the Cummins/Onan QSB5-G2 NR3| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Filter - Primary | 125561 | Amazon eBay | ||
| Fuel filter | Fuel Filter | 125551 | Amazon eBay | ||
| Oil filter | Oil Filter | 125550 | Amazon eBay |
Common questions
What engine is in the Terex T90C?
The Terex T90C is powered by the Cummins/Onan QSB5-G2 NR3 engine.
Which oil filter part number does the Terex T90C take?
The Terex T90C uses oil filter part number 125550.
What fuel filter does the Terex T90C use?
The Terex T90C uses fuel filter part number 125551.
What air filter fits the Terex T90C?
The Terex T90C uses air filter part number 125561.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| No generator output voltage | Circuit breaker tripped | Reset circuit breaker |
| Low generator output voltage | Voltage adjustment set too low | Adjust voltage potentiometer |
| Low engine speed | Call TEREX Service | |
| Fluctuating or surging generator output voltage | Check engine fuel, oil, and air filters | |
| High generator output voltage | Voltage adjustment potentiometer set too high | Adjust potentiometer |
| High engine speed | Call TEREX Service |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Terex T90C troubleshooting guide (14 entries) →
Parts
3| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 125550 | Oil Filter | Oil filter | Amazon eBay | |
| 125551 | Fuel Filter | Fuel filter | Amazon eBay | |
| 125561 | Air Filter - Primary | Air filter | Amazon eBay |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Fuel consumption
| Rating | Load | L/h | gal/h |
|---|---|---|---|
| Prime | 4.4 | 16.6 | |
| Prime | 50% | 3.4 | 13.0 |
| Prime | 75% | 5.0 | 19.0 |
| Standby | 5.6 | 21.0 | |
| Standby | 100% | 6.0 | 23.0 |