- NZR ADK class
NZ ADK and ADB classes
A refurbished ADK set
Manufacturer ADK: Commonwealth Engineering, New South Wales, Australia
Entered service Australia: 1968
New Zealand: 1993
Number built 10 sets Number in service 9 sets Formation ADK+ADB (runs as ADK+ADB+ADB+ADK in service) Fleet numbers ADK: 681 – 690
Operator Westrail on behalf of Transperth, Tranz Rail (Tranz Metro), Veolia Auckland Line(s) served Auckland suburban lines Specifications Width 2.7 m (8 ft 10 in) Height 3.8 m (12 ft 6 in) Maximum speed 90 km/h (56 mph) Power output 155 kW (208 hp) UIC classification 1A-A1+2'2' Gauge 1,067 mm (3 ft 6 in)
The ADK class consists of nine diesel multiple unit (DMU) cars each coupled to an ADB class trailer, operating on Auckland's suburban rail network. The Auckland Regional Council (ARC) owns these units, and they are operated by Veolia.
These units were built for the Western Australian Government Railways (WAGR) in 1967-68. The ADK driving units were manufactured by Commonwealth Engineering, and the ADB trailer units were manufactured at the WAGR's Midland Railway Workshops.
They were purchased along with the newer ADL/ADC class units by New Zealand Rail Limited in 1993 to replace suburban carriage trains then used in Auckland. Later that year, they were sold by NZR to the Auckland Regional Council. The units were credited with an increase in patronage in the Auckland system, but have a number of reliability problems due to their age.
In 2004 the ARC funded the upgrade of the entire class, which included refurbishment of the interiors of the units and the painting of the exterior in the new MAXX colour scheme. The upgrade also include mechanical improvements which would extend the useful life of these units by 10 years. After the upgrades were completed, ADK/ADB trains ran as permanent 4-car sets rather than the 2-car sets they ran as previously. All ADKs are refurbished, except ADB 773 (stored at Westfield) and ADK 689 (which never came to New Zealand).
- Width: 2.7 m
- Height: 3.8 m
- Length: 20.3 m (ADK), 15.9 m (ADB)
- Seating capacity: 134 (total): 70 (ADK) + 64 (ADB)
- Standing capacity: 72 (total): 50 (ADK) + 32 (ADB)
- Passenger doors: air-operated sliding doors, 2 pairs each side (ADK), one pair each side (ADB), 0.915 m wide
- Step height from rail level: 1.1 m
- Air conditioned: no
Key: In service Out of service Auckland Transport service Preserved Overhaul Scrapped Number Introduced Current status Current livery Notes ADK 681 July 1993 In service MAXX Blue (old photo) ADK 682 July 1993 In service MAXX Blue (photo) ADK 683 July 1993 In service MAXX Blue (old photo) ADK 684 In service MAXX Blue ADK 685 July 1993 In service MAXX Blue ADK 686 July 1993 In service MAXX Blue ADK 687 July 1993 In service MAXX Blue ADK 688 July 1993 In service MAXX Blue ADK 689 July 1993 Not in service Trans Perth Never shipped to New Zealand ADK 690 July 1993 In service MAXX Blue ADB 771 July 1993 In service MAXX Blue (old photo) ADB 772 In service MAXX Blue ADB 773 July 1993 Not in service Trans Perth ADB 778 was renumbered to 773. Storage at Westfield, spare parts. ADB 774 In service MAXX Blue ADB 775 July 1993 In service MAXX Blue ADB 776 July 1993 In service MAXX Blue ADB 777 In service MAXX Blue ADB 778 In service MAXX Blue Renumbered ADB 773; paired with ADK 683 ADB 779 In service MAXX Blue Renumbered ADB 778; paired with ADK 688 ADB 780 July 1993 In service MAXX Blue
- Parsons, David - New Zealand Railway Motive Power 2002
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