Service parts for the T90
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredOil system
1 requiredBelts
1 requiredCooling system
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 80 kW |
| Standby kVA | 100 |
| Prime power | 72 kW |
| Oil capacity | 8.0 L |
| Alternator | Stamford/AvK UCI274DIL32D |
| Voltage options | 208 V, 220 V, 240 V, 440 V, 480 V |
| Phase | 3 |
| Power factor | 0.8 |
| Circuit breaker | 300 A |
| Sound level | 66.0 dBA @ 7 m |
Engine
| Oil capacity | 8.0 L |
|---|---|
| Coolant capacity | 7.0 L |
| Displacement | 4.41 L |
| Aspiration | turbocharged and charge air cooled |
| Rated speed | 1800 rpm |
Maintenance & consumables
for the Perkins 1104D-44TAG2| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Filter | 8C-3601 | Amazon eBay | ||
| Fuel filter | Fuel Filter | 8C-3627 | Amazon eBay | ||
| Oil filter | Oil Filter | 250-0486 | Amazon eBay | ||
| Belt | Belt | 8C-3620 | Amazon eBay | ||
| Coolant filter | Coolant Filter | 8C-3600 | Amazon eBay |
Common questions
What size generator is the Terex T90?
The Terex T90 is rated 80 kW standby (100.0 kVA).
What engine does the Terex T90 use?
The Terex T90 is powered by the Perkins 1104D-44TAG2 engine.
Is the Terex T90 diesel or gas?
The Terex T90 runs on diesel.
How much oil does the Terex T90 take?
The Perkins 1104D-44TAG2 engine in the Terex T90 has an oil capacity of 8.0 liters.
Which alternator is fitted to the Terex T90?
The Terex T90 uses a Stamford/AvK UCI274DIL32D alternator.
Which oil filter part number does the Terex T90 take?
The Terex T90 uses oil filter part number 250-0486.
What fuel filter does the Terex T90 use?
The Terex T90 uses fuel filter part number 8C-3627.
Which air filter part number does the Terex T90 take?
The Terex T90 uses air filter part number 8C-3601.
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 T90 troubleshooting guide (14 entries) →
Parts
10| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 101-4000 | Gasket | 385 | Gasket | Amazon eBay |
| 127-0826 | Battery | 685 | Battery | Amazon eBay |
| 153-5720 | Battery | 147 | Battery | Amazon eBay |
| 250-0486 | Oil Filter | 34 | Oil filter | Amazon eBay |
| 250-0488 | Spark Plug | 31 | Spark plug | Amazon eBay |
| 8C-3600 | Coolant Filter | 375 | Coolant filter | Amazon eBay |
| 8C-3601 | Air Filter | 250 | Air filter | Amazon eBay |
| 8C-3620 | Belt | 350 | Belt | Amazon eBay |
| 8C-3627 | Fuel Filter | 30 | Fuel filter | Amazon eBay |
| 134277 | T70, T90 & T120 Super Quiet Generator Maintenance Schedule | Service part / kit | Amazon eBay $34.00 |
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 |