HomeTerexTerex T70

Terex T70 Generator Set

The Terex T70 is a 59 kW (100 kVA) diesel standby generator set powered by a Perkins 1104D-E44TG1 engine. It is available at 208 V, 220 V, 240 V, 440 V and 480 V, 3-phase, 60 Hz and rated 225 A. It holds about 9 L (2.4 gal) of oil and 7 L (1.8 gal) of coolant, with a maximum ambient rating of 41 °C. The set measures 2790×1190×1620 mm (109.8×46.9×63.8 in), weighs about 2445 kg (5390 lb) and produces 66 dBA at 7 m. An integrated tank holds 606 L (160.1 gal), roughly 36 hours of runtime. The same 1104D-E44TG1 engine also powers generator sets from AKSA and Perkins.

59 kW
Standby
4.41 L
Displacement
9.0 L
Oil capacity
1
Document types

Specifications

Fueldiesel
Frequency60.0 Hz
Standby power59 kW
Standby kVA100
Prime power54 kW
ControllerMurphy Cascade
Oil capacity9.0 L
AlternatorStamford/AvK UCI224EIL73D
Voltage options208 V, 220 V, 240 V, 440 V, 480 V
Phase3 phase,1 phase
Rated current225 A
Power factor0.8
Circuit breaker225 A
Coolant capacity7.0 L
Max ambient41 °C
Dimensions (L×W×H)2790×1190×1620 mm
Dry weight2445 kg
Sound level66.0 dBA @ 7 m
Fuel tank606.0 L
Tank runtime36 hr

Engine

Perkins 1104D-E44TG1
Oil capacity8.4 L
Coolant capacity13.2 L
Displacement4.41 L
AspirationTurbocharged
Rated speed1800 rpm

Maintenance & consumables

for the Perkins 1104D-E44TG1
ItemSpecCapacityPart #Interval
Air filterClean/replace engine air cleaner element250 hr find
Fuel filter find
Oil filter901103 PartsGeek kuduparts $25.00
Belt find
Coolant17.0 litres
Oil21.3 litres

Compatible filters for the Perkins 1104D-E44TG1 — cross-referenced via Donaldson. Options to verify against your serial number, not confirmed for this exact unit.

  • Air filter: Fg Wilson 901048 Fg Wilson 901050 Perkins 901048 Perkins 26510343 Donaldson P828889

Common questions

What is the power rating of the Terex T70?

The Terex T70 is rated 59 kW standby (100.0 kVA).

What engine does the Terex T70 use?

The Terex T70 is powered by the Perkins 1104D-E44TG1 engine.

What fuel does the Terex T70 use?

The Terex T70 runs on diesel.

What is the oil capacity of the Terex T70?

The Perkins 1104D-E44TG1 engine in the Terex T70 has an oil capacity of 8.4 liters.

What alternator does the Terex T70 use?

The Terex T70 uses a Stamford/AvK UCI224EIL73D alternator.

Troubleshooting

14

Symptoms & remedies

SymptomCauseRemedy
No generator output voltageCircuit breaker trippedReset circuit breaker
Low generator output voltageVoltage adjustment set too lowAdjust voltage potentiometer
Low engine speedCall TEREX Service
Fluctuating or surging generator output voltageCheck engine fuel, oil, and air filters
High generator output voltageVoltage adjustment potentiometer set too highAdjust potentiometer
High engine speedCall TEREX Service
Fluctuating generator output voltage stabilityLoad may be the causeRedistribute load if possible
Engine won't crankLoose battery cableCheck cables and battery electrolyte level. Recharge as necessary
Engine runs, but loses power under loadClogged fuel systemCheck fuel system
Engine shuts downOil Pressure Switch not opening automatically and TROUBLE LIGHT onImproper coolant use a 50/50 on
TROUBLE LIGHT on CONTROL PANEL is illuminatedBroken fan beltInspect fan belt and replace as needed
Voltage does not come up to the rated voltageInternal problem with the generator endCheck for even reading across the lines, if they are not this would mean you probably have a problem with the wiring of the switch or generator. If the generator voltage reads correctly, contact the TEREX service department.
Uneven reading between the legs when applying 24 volts to the field wiresRecheck your wiring connections. After you have the field wire connected start the unit again and check your output voltage. It may still be necessary to flash the fields to restore residual voltage.
Malfunction discoveredIdentify symptoms, troubleshoot, perform repair, return to service

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

6
Part #DescriptionQtySystem
125550Oil FilterOil filter PartsGeek
125551Fuel FilterFuel filter PartsGeek
125552BeltBelt PartsGeek
125561Air Filter - PrimaryAir filter PartsGeek
125562Air Filter - SecondaryAir filter PartsGeek
134277T70, T90 & T120 Super Quiet Generator Maintenance ScheduleService part / kit PartsGeek

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

RatingLoadL/hgal/h
Prime4.416.6
Prime50%3.413.0
Prime75%5.019.0
Standby5.621.0
Standby100%6.023.0

Available documents

Service manual — 134277 (Terex)