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{{Short description|Class of diesel multiple units made in Australia}}
{{Use dmy dates|date=November 2019}}
{{Infobox train
| background = #3E53A4
| name = ADK/ADB class railcar
| image = ADK
| imagesize =
| caption = ADK
| interiorimage =
| interiorcaption =
| service = Australia:
| manufacturer = ADK: [[Commonwealth Engineering]]<br>ADB: [[Western Australian Government Railways]]
| factory = ADK: [[Granville, New South Wales|Granville]]<br>ADB: [[Midland Railway Workshops]]
| family =
| replaced = Australia: [[WAGR Dd class]] & carriages<br>
| yearconstruction =
| yearservice = Australia: 1968<br>New Zealand: 1993
| refurbishment = 2007
| yearscrapped =
| numberconstruction =
| numberbuilt = 10 sets
| numberservice = 8 sets (running in pairs)
| numberpreserved =
| numberscrapped =
| formation = Australia: ADK+ADB<br>New Zealand: ADK+ADB+ADB+ADK<br>(originally ADK+ADB)
| fleetnumbers = ADK 681–ADK 690<br>ADB 771–ADB 780
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| operator = Australia:<br>[[Western Australian Government Railways]], [[Westrail]]<br>New Zealand:<br>[[Tranz Metro]], [[Transdev Auckland]]<br>Maputo, Mozambique:<br>[[MetroBus (Mozambique)|MetroBus]]
| depots = Australia: [[Claisebrook railway depot|Claisebrook]]<br>New Zealand: Westfield
| lines = Australia:<br>[[Armadale
| carbody = ADK: {{convert|20.20|m|ftin|0|abbr=on}}<br>ADB: {{convert|15.85|m|ftin|0|abbr=on}}
| trainlength = {{convert|37.75|m|ftin|0|abbr=on}} per two-car unit
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| height = {{convert|3.92|m|ftin|0|abbr=on}}
| floorheight = {{convert|1.1|m|ftin|0|abbr=on}}
| platformheight =
| entrylevelorstep = {{convert|1.1|m|ftin|0|abbr=on}}
| art-sections =
| doors = Air-operated sliding doors, 2 pairs each side (ADK), one pair each side (ADB), 0.915 m wide
| maxspeed = {{convert|90|km/h|mph|0|abbr=on}}
| weight = ADK: {{convert|33.3|t|abbr=on}}<br>ADB: {{convert|15.8|t|abbr=on}}
| acceleration =
| deceleration =
| traction =
| engine = 2 x [[Cummins]]
| poweroutput = ADK: 2 x {{convert|155|kW|hp|0|abbr=on}}, one engine per bogie
| transmission = [[Diesel-hydraulic]]
| aux = ADB: diesel alternator in former cab (one per four-car set)
| powersupply =
| hvac = Heating only
| electricsystem =
| collectionmethod =
| uicclass = (1A
|
| brakes = Electro-pneumatic
| safety =
| coupling = Australia: [[Norwegian coupling]]<br> NZ: [[Kidney link & pin]]
| multipleworking = Within class
| gauge = {{RailGauge|1067mm|lk=on}}
}} The '''ADK class''' are a class of [[diesel multiple unit]]s that were previously operated by [[Western Australian Government Railways]] (WAGR) in Perth, and later [[Transdev Auckland]] on [[Auckland]]'s suburban rail network, and are currently operated by [[MetroBus (Mozambique)|MetroBus]] in [[Maputo]], [[Mozambique]]. Originally built by [[Commonwealth Engineering]] and the [[Midland Railway Workshops]] for WAGR in the late 1960s, all but one were sold in 1993 to [[Tranz Rail|New Zealand Rail]], and were then owned by [[Auckland Transport]]. The units were completely withdrawn from service in New Zealand on 5 December 2014, following completion of [[Auckland railway electrification|electrification of Auckland's network]].
==History==
In 1967 and 1968, ten two-carriage stainless steel sets were manufactured for the [[Western Australian Government Railways]]. Each set consisted of an ADK power car manufactured by [[Commonwealth Engineering]], and an ADB trailer built by the WAGR's [[Midland Railway Workshops]]. The ADK cars were manufactured in [[Granville, New South Wales|Granville]] and railed via [[Melbourne]] and [[Adelaide]] requiring a change of bogies at each of these locations and again at [[Kalgoorlie]].<ref name=GrayMay>{{
Following the electrification of the [[Railways in Perth|Perth
In October 1993, prior to being privatised, New Zealand Rail sold the class to the [[Auckland Regional Council]] (ARC).<ref>[https://web.archive.org/web/20070530060205/http://www.trainweb.org/nzdiesels/railcar/wrdmu/ ADK/ADL] New Zealand Diesel & Electric Traction</ref>
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Unlike the [[ADL/ADC class diesel multiple unit|ADL/ADC class]] and SA sets, the units were not fitted with Electronic Train Protection (ETP) equipment, owing to their imminent replacement by the [[New Zealand AM class electric multiple unit|AM class]]. All are scheduled for withdrawal by late 2014.<ref name=history>{{cite news |title=Railfan|publisher=Triple M Publications|volume=20|number=3|ISSN=1173-2229|date=June 2014}}</ref>
{{As of|2014|9|15}}, all services on the Manukau Line are operated by the [[New Zealand AM class electric multiple unit|AM class]]. As a result of this, all ADK units were placed into storage. Services to Papakura formerly run by ADKs are now run by ADLs, also displaced from the Manukau Line. A farewell trip was run by the [[Railway Enthusiasts Society]] on 16 November 2014, running on every suburban line in Auckland.<ref>{{cite web|url=http://www.gvr.co.nz/Rail+Excursions++Tours/The+Last+Diesel+Subbie+Train+In+Auckland.html|archive-url=https://web.archive.org/web/20151029073655/http://www.gvr.co.nz/Rail+Excursions++Tours/The+Last+Diesel+Subbie+Train+In+Auckland.html|url-status=dead|archive-date=29 October 2015|title=The Last Diesel Subbie Train In Auckland Farewell to the SA's|date=20 September 2015}}</ref> The units were completely withdrawn on 20 July 2015.
== Mozambique ==
In August 2017, eight units were shipped to [[Mozambique]],<ref>{{cite web|url=http://www.scoop.co.nz/stories/AK1708/S00692/aucklands-old-diesel-trains-set-for-new-life-in-mozambique.htm|title=Auckland’s old diesel trains set for new life in Mozambique|date=25 August 2017|access-date=23 March 2020|author=Auckland Council|author-link=Auckland Council|publisher=[[scoop.co.nz]]|archive-date=23 May 2022|archive-url=https://web.archive.org/web/20220523013042/https://www.scoop.co.nz/stories/AK1708/S00692/aucklands-old-diesel-trains-set-for-new-life-in-mozambique.htm|url-status=live}}</ref> with one unit being purchased by the [[New Zealand Special Air Service]]s for training.
==References==
===Citations===
{{Reflist}}
===Bibliography===
{{refbegin}}
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{{NZR Locomotives|state=collapsed}}
{{Perth public transport |state=collapsed}}
{{WAGR Railcars |state=collapsed}}
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[[Category:Diesel multiple units of New Zealand]]
[[Category:Diesel multiple units of Western Australia]]
[[Category:Passenger rail transport in Perth, Western Australia]]
[[Category:Train-related introductions in 1967]]
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