ADL/ADC class diesel multiple unit

ADL/ADC class railcar
A refurbished ADL/ADC near Britomart in 2009
In serviceAustralia: 1982–1993,
New Zealand: 1993–2022
ManufacturerA Goninan & Co
Built atNewcastle
ReplacedNew Zealand: 56-foot carriages
Constructed1981–1985
Entered service1981 (Perth)
1993 (Auckland)
Refurbished2002-2003, 2008, 2017-2019 (Life Extensions)
Number built10 sets
Number in service0 sets
FormationADL+ADC
Fleet numbersADL 801–ADL 810
ADC 851–ADC 860
Capacity132
OperatorsWestrail, Tranz Metro, Transdev Auckland
DepotsWestfield, Pukekohe
Lines servedSouthern Line (Papakura – Pukekohe)
Specifications
Car body construction20.26 m (66 ft 6 in)
Train length42.20 m (138 ft 5 in)
Car length21.10 m (69 ft 3 in) over couplers
Width2.74 m (9 ft 0 in)
Height3.84 m (12 ft 7 in)
Floor height1.12 m (3 ft 8 in)
DoorsAir-operated sliding doors; two each side (four per car), 1.26 m (4 ft 2 in) wide
Maximum speed90 km/h (56 mph)
WeightADL: 42.97 tonnes (95,000 lb)
ADC: 35.75 tonnes (79,000 lb)
Prime mover(s)Cummins NT855 R4
Power outputADL: 2 x 205 kW (275 hp), one engine for each bogie
TransmissionVoith
AuxiliariesADC: diesel alternator
HVACHeating & air conditioning
UIC classificationBo′Bo′+2′2′
Braking system(s)Electro-pneumatic
Coupling systemAustralia: Norwegian coupling
NZ: Kidney link & pin
Multiple workingWithin class
Track gauge1,067 mm (3 ft 6 in)

The ADL class is a class of diesel multiple units that were last operated by Auckland One Rail on the suburban rail network in Auckland, New Zealand. Originally built in the early 1980s by A Goninan & Co for Westrail of Western Australia, they were sold in 1993 by Westrail's successor, Transperth, to New Zealand Rail. The units are currently owned by Auckland Transport, and were withdrawn from service in August 2022 and transported to Glenbrook Vintage Railway and Pukeoware depot for storage.