New Zealand DM class electric multiple unit
|New Zealand DM/D class|
D2778 awaiting departure from Johnsonville, the terminus of the Johnsonville Line, 17 December 2007.
|In service||2 July 1938 – 25 June 2012|
|Built at||Preston Works, United Kingdom|
|Replaced||Replaced by Matangi class units 2011-2012|
|Entered service||July 1938 (36 stock)
December 1946 (42 stock)
August 1949-March 1954 (46 stock)
|Refurbishment||2005-2007 (Tranz Metro)|
|Scrapped||1978-1980s (36/42 stock)
2011-2012 (46 stock)
|Formation||DM-D (Johnsonville Line and Melling Line)
D-DM-D (Hutt Valley Line)
|Capacity||132 (two-car units)
204 (three-car units)
|Line(s) served||Johnsonville Line, Melling Line (two-car and three-car units)
Hutt Valley Line,(three-car units and occasionally and after displaced from Johnsonville line three two-car units.
Kapiti Line, three-car units and two-car units very occasionally after the 1980's
|Car length||19.2 metres (63 ft)|
|Width||2.61 metres (8.6 ft)|
|Maximum speed||97 km/h (60 mph)|
|Weight||43.5 tonnes (42.8 long tons)|
|Power output||447 kW (599 hp)|
|Electric system(s)||1500 V DC overhead|
|Braking system(s)||Air, handbrakes|
|Track gauge||3 ft 6 in (1,067 mm)|
The New Zealand DM/D class (also known as English Electrics) were a class of electric multiple units used on the Metlink suburban rail network of Wellington, New Zealand. Formed of DM power cars and D trailer cars, the first units were ordered from English Electric in 1936 and introduced on 2 July 1938 operating the electrified Johnsonville Line service. Additional units were ordered in 1942 and 1946 as other Wellington suburban lines were electrified.
The units were relegated to peak services and the Johnsonville Line after the arrival of the "Ganz Mavag" EM/ET units in 1982-83, before finally being replaced by the "Matangi" FP/FT units in 2011-12. The units operated their last revenue service on 25 June 2012, from Wellington to Melling and return. Five complete units (four two-car and one three-car) and six trailer cars have been preserved.
Built by English Electric, they were introduced in 1938 by the New Zealand Railways Department (NZR) following the opening of the Tawa Flat deviation of the North Island Main Trunk - the section of the old NIMT from Wellington to Johnsonville became the Johnsonville Line from 2 July. Ordered in 1936, the first six motor cars and trailers inaugurated the service. Due to traffic growth, three more motor cars and two more trailers were ordered in 1942 and placed into service in 1946.
Forty more motor cars and 71 trailers were ordered in 1946 for an expansion of suburban services on the Upper Hutt line. They were supplied from 1949 and were used on the Paekakariki service, as the Hutt Valley electrification was not then completed. However this required the use of prewar wooden carriages with electric locomotives in peak periods on the Hutt line until the EM/ET units were supplied.
The class operated in two configurations:
- Two-car unit (DM-D). Used on the steep Johnsonville Line until March 2012, as four-car trains for peak and two-car trains off-peak and weekend; 38.4 metres long with a tare weight of 69.7 t, full seated load 79.9 t. Until March 2012 there were 11 two-car units in service.
- Three-car unit (D-DM-D). Mainly used on the Wellington to Taita and Melling lines; 57.5 metres long with a tare weight of 99.5 t.
The class were amongst the oldest rolling stock operated by KiwiRail. The last units in service were the 46 stock introduced in 1949 to 1954 - 36/42 stock were withdrawn in the early 1980s.
Motor cars have 54 seats and trailers 70 seats (originally 56 and 72 seats). Originally there was a double seat alongside the driver's cab. During renovations this seat was removed, reducing the seating by two, and a barrier was installed level with the back of the cab.
Some motor cars had the double seats in the rear section in front of the luggage compartment removed and the seats parallel with the sides extended to provide space for prams.
Motor cars originally had a driver's cab at each end, but extra space was needed in the luggage compartment and the cab there was removed. Initially a single motor car had been used on the Johnsonville line for the all-night service, and this was considered for the Melling line.
Each car had ten 150 V electric heaters in series run off the 1500 V supply, so a 1500 V connection was required between motor cars and trailers. 46 stock differed from 36/42 stock in some respects:
- 36/42 stock motor cars had a 120 V DC motor-generator set supplying power for lights, signal circuits and brake & door operation; 46 stock set was larger, to supply two trailers rather than one.
- 36/42 stock bogie wheelbase was 7 ft 6 in (2.3 m); 46 stock 8 ft (2.4 m).
- 36/42 stock had ventilation louvres in the doors; 46 stock had taller windows.
- 36/42 stock had one coach-mounted brake cylinder only; 46 stock had Westinghouse electro-pneumatic air brakes and automatic brake equipment.
Because of their shorter wheelbase and the smaller motor-generator set designed for one trailer only, 36/42 stock units were kept for the Johnsonville line as much as possible.
The introduction of the EM/ET class units in the early 1980s saw a large number of the class become redundant, namely all of the '36 and '42 stock. Ten two-car units of '46 stock were refurbished at the now closed East Town Railway Workshops in Wanganui between 1984 and 1986 for continued operation on the Johnsonville Branch where EMs did not have running rights due to their being overgauge and having insufficient braking capacity, and for peak-hour running on the Hutt Valley and Melling lines.
In the early 2000s, the remaining members of the class underwent a moderate refurbishment to extend their operational lives to 2012. The refurbishment largely involved a cosmetic upgrade of the exterior and interior of the cars, with new seating and a major mechanical overhaul. As part of this the cars received the new two-tone Tranz Metro blue livery with the exception of DM 556 and its trailer cars D 2130 and D 2411 which were repainted into the old Midland Red livery with silver roof and black running gear in 2006. Trailer until D 2660 was sent to Hillside Workshops for an overhaul in 2002.
In February 2007, overcrowding of Wellington trains resulted in the recommendation by the Greater Wellington Regional Council to re-introduce two DM/D units, one former Tranz Metro units being used for spares and another from the Ferrymead Railway. These units entered service from October 2008. Six ex-British Rail carriages rebuilt at Hillside Workshops as the SE class and top-and-tailed by EO locomotives were also used.
Due to the arrival of the 44 EM/ET sets, withdrawals of the D/DM class units began in November 1981 with the scrapping of pioneering set DM 55 and trailer D 2007 (DM 1 and D 101). Further scrappings until July 1983 when the last two sets of 1942 stock were withdrawn for scrapping, while the 1936 stock had all been withdrawn and scrapped by April of that year. Only one of the 1946 sets had been withdrawn - motor coach DM 13 had been withdrawn and scrapped in April 1978 after being involved in an accident.
The DM/D class were progressively replaced from January 2011 into 2012 by the new Matangi units. The first DM/D set operations to be given to the Matangis were services operated by the class on the Hutt Valley line, which saw some three-car sets initially withdrawn. By late 2011, the only three-car sets in service were DM 251, DM 504 and DM 556 "Cyclops". The latter soon had a trailer car removed and was seconded to Johnsonville Line services, leaving the other two the only three-car sets in service. Both DM 251 and DM 504 continued relatively trouble free in service (compared to the Johnsonville Branch EE's) until 27 March 2012, when both were suddenly withdrawn from service after the evening peak services that day.
Due to the nature of operations on the Johnsonville Branch and the need to increase the catenary voltage for full Matangi operation, operations on the branch needed to be cut over from one type to the other rather than phased in progressively. This caused some issues as the delay of Matangi units into service pushed this date further back than had been planned, and a marginal voltage increase had already occurred to allow Matangi units to be tested on the line, which caused the older D/DM sets to suffer electrical failures such as blown fuses or burnt out resistor grids. As two-car sets deteriorated in condition or suffered large mechanical problems they were withdrawn from service, and in some cases a good trailer from one set and a good motor car from another were matched up to create a good set from two bad ones.
By October 2011, enough two-car Johnsonville sets had been withdrawn to require two-car red sets DM 27 and DM 216 "Phoenix" (which had been used on Hutt Valley services) to be drafted into service on the Johnsonville line to maintain the timetable. Both these sets could only run with each other on the line, as they were electrically incompatible with the other two-car Johnsonville sets. By late December, DM 216 "Phoenix" suffered mechanical failure and was withdrawn, with DM 556 "Cyclops" shortened to a two-car set to replace DM 216 "Phoenix". Due to a lack of driving equipment and headlights in the DM motor car on 556, the set was coupled to the uphill end of DM 27 with these two operating in this same configuration until the end of services on the line.
Further failures of units saw the line only having one two-car set available for traffic at one stage but further repairs saw DM's 182, 441 and 510 maintaining the services along with DM 27 and DM556 "Cyclops". The peak timetable required six two-car sets, however for the remainder of the use of EE's on the branch only five were used with one two-car set operating some services where two would normally be used. Eventually, the Greater Wellington Regional Council had to supplement the trains on the line with buses at morning peak.
The final Johnsonville Branch services to be operated by the DM/D class ran on 19 March 2012. The train, consisting of DM 27 and DM 556 and driven by Phil Gibbs, crossed FP/FT 4155 and another Matangi set at Ngaio where impromptu speeches were held to farewell the trains, which subsequently arrived back at Wellington late. This also happened to be the last time both DM 27 and DM 556 "Phoenix" ran in service, both being withdrawn following the final run. Due to issues surrounding noise using Matangi units on the Johnsonville line, three test trains were run with two two-car DM/D sets; the last of these being run on 15 June 2012 using sets DM 441 and DM 510.
The final English Electric revenue service was the 14:39 Melling to Wellington service on 25 June 2012. Departing Wellington Station's Platform 9 at 14:17, DM's 182, 441 and 510 ran as train 5648 to Melling before returning to Wellington as train 5649, where they were retired from service, ending 74 years of English Electric service in Wellington.
Later on 25 June, an English Electric unit was listed on TradeMe, with a start price of $29,990. Initially thought to be a hoax, the train was 'bought' by a four-year old who clicked on the 'Buy Now' for the train. The train was later sold for $30,000 on 2 July 2012 at 1:42pm when the auction closed. At the time no numbers had been given for the train sold as GWRC had nine two-car sets awaiting sale or scrap. The set purchased was eventually revealed as motor car DM 562 and trailer D 2149, which arrived in Nelson on 21 August 2012, after being transported by road from the Wellington railway yards onto the Interislander ferry the following day.
Final scrapping of the 12 remaining units (14 D and 11 DM cars) is believed to have begun at Hutt Workshops just after 18 December 2012, starting with a mix of DM and D cars, before in January concentrating on the D class trailers and followed by the DM power cars. It was announced on 23 January that the three-car DM 556 "Cyclops" set was put aside for the Wellington Heritage Multiple Unit Preservation Trust, while the two-car DM 216 "Phoenix" set was put aside for preservation by the National Railway Museum of New Zealand. Trailer D 2826 was also put aside to be moved to Belgrove to join DM 562 and D 2419, converting it to an impromptu three-car set in the same way as the original three-car D/DM/D sets.
Scrapping of the D and DM cars at Hutt was completed on 31 January 2013, with motor car DM 297 being the last to be scrapped.
The DM class has worn five distinctive liveries during their working lives:
The original livery of the DM and D class cars, introduced in 1938. This livery was replaced with standard "Midland Red" by 1949. The car body was painted in Royal Blue with a white band along the side below the windows and grey roof. The traction equipment and running gear were painted black, but were concealed under skirting until the war years when maintenance staff had them removed for ease of access. The car numbers were painted in gold on a black background, while on the side they were painted inside a red oval, similar to the cab-side numberplates on NZR locomotives.
The Royal Blue colour has been noted for its similarities to the MAXX Blue used in Auckland.
The best-known livery, all cars of the DM and D classes wore the "Midland Red" livery at one time during their working lives. When the EM/ET class was introduced in the early 1980s in an olive paint scheme, the red of the DM/D class became a distinguishing feature and they came to be nicknamed "old reds" and "red sets" in New Zealand railfan jargon.
The car body and skirting over the traction equipment was painted in "Midland Red" with the roof in grey and separated from the red body by a black strip and black underfloor equipment and running gear. In 2008 KiwiRail required the car fronts to be repainted in yellow for better visibility at level crossings. Car numbers were painted in gold on a black background, but were later replaced by solid white numbers during the TMS era. By this time, the livery was confined to three 'heritage' sets only and had been applied to all other cars during their successive repaints into other liveries.
The last set in regular service to retain the "Midland Red" livery was DM556 and trailers D2130 and D2411. When it was refurbished in 2006, it was named "Cyclops" due to its single-lens headlight and repainted externally in the "Midland Red" livery with gold car numbers as per the 1950s. This earned Tranz Metro a "Business in Conservation" award from the New Zealand Department of Conservation and the Wellington Conservation Board the same year. This livery was applied to DM 27 and D 163 from Ferrymead and DM216 and D2687 in 2008 when they were returned to service.
Olive and Cream
Originally introduced on the EM/ET class sets, several of the DM/D sets refurbished for the Johnsonville Branch were later repainted in this livery during the late 1980s. The car body was repainted in olive green with a grey roof and black underfloor equipment and running gear. A white band surrounded the windows on the sides of the car, ending between the first passenger window and the driver's cab window. The doors and ends were painted yellow with white block numbers and classification letters on the side and black numbers on the '1' and '2' ends of the train. The cab windows and headlight mounting were painted with a black surround.
These sets were branded for New Zealand Rail's suburban operator Cityline, and carried the Cityline branding and logo under the central four windows on the car body side. The NZR logo was painted in front of the car numbers at either end. Following the sale of NZ Rail Ltd to Wisconsin Central and the rebranding of suburban services as Tranz Metro, the NZR logos and Cityline branding were deleted and replaced with the Tranz Metro logo in the place of the former Cityline branding.
Tranz Metro "Cato Blue"
This livery was applied to set DM 147 by Tranz Rail's suburban operator Tranz Metro during the late 1990s, and was the only unit to wear this livery. The car body was painted in the standard Tranz Rail "Cato Blue" with a grey roof, yellow ends and headlight mount, and black underfloor equipment and running gear. The doors were unpainted aluminium while there were two black bands on the car body, one at floor level separating the running gear and underfloor equipment from the "Cato Blue" body and the other at roof level separating the grey roof from the blue body.
Standard Tranz Metro logos were applied along the centre of the car sides. The car numbers were painted in black Frutiger script on the ends of the car, underneath the left-hand tail lamp. The end numbers were painted in the same style on the centre of the cab doors.
Tranz Metro Two-tone Blue
Starting in 2005, Tranz Metro (now owned by Toll Rail) undertook a major refurbishment of the DM/D sets. As part of this, DM 297 and D 2778 were painted in a new two-tone livery which would later be used on all sets with the exception of the three 'heritage' units. The car body was "Cato Blue" with a grey roof and headlight mount, yellow cab fronts and black underfloor equipment and running gear. There was a Royal Blue window band along the side of the cars, while a black strip separated the grey roof colour from the car body. The passenger doors were unpainted aluminium, and white overhead hazard stickers were applied to the cab doors. Car numbers were painted on the cab-mounted horn covers in dark blue descending Frutiger script, although some had different sized lettering or a serifed font.
As of 2013, five English Electric sets had been preserved by individuals or railway societies. Two of the sets are fitted with the original single headlights while three are rebuilt sets featuring the later twin-beam headlight units:
- DM 16 and D 162 (DM 216 and D 2687) were withdrawn in July 2001 and stored at Hutt Workshops. Restored to working order in October 2008 for GWRC, it was named Phoenix. Withdrawn again in December 2011, the set was donated to the National Railway Museum of New Zealand in January 2013.
- DM 27 and D 163 (DM 320 and D 2695) were purchased by two Wellington enthusiasts and donated to the Canterbury Railway Society at the Ferrymead Heritage Park in October 1988. For most of its time at Ferrymead the set remained stored in an operable order from its arrivaluntil leased to GWRC in 2007 for use in Wellington until the new 'Matangi' trains arrived, though once the catenary at Ferrymead stretched the full length of track in 2007 it had a few non-passenger runs down the length of track. The set was restored to service with single-arm pantographs in place of the diamond units and its front was repainted yellow, painted red and given its original pre-TMS number as per the wishes of Ferrymead in October 2008. The set was returned to Ferrymead in 2012 and re-entered service for the CRS on 21 September 2013. This set is fitted with the original single headlights and is in operational condition. Named Robyn.
- DM 45 and D 144 (DM 510 and D 2489) were sold in August 2012 to an enthusiast in the Wellington area and were towed to Steam Incorporated's site at Paekakariki for storage. As the initial non-rail use for the sets has encountered issues, the set remains stored outside at Paekakariki. Following several graffiti attacks, one side of the unit has been painted grey although the other side still retains the Tranz Metro two-tone blue livery. This set is the last remaining unit set from the trio that ran the very last English Electric train to Melling on 25 June 2012, and also was one of the last two units to run on the Johnsonville Line on 15 June 2012.
- DM 48 and trailers D 113 and D 138 (DM 556, D 2130 and D 2411) was one of the last single-headlight set in use in Wellington, hence its nickname "Cyclops", and was withdrawn in 2012. Previously shortened to two cars to work on the Johnsonville Branch with DM 27, the set was donated to the newly founded Wellington Heritage Multiple Unit Preservation Trust in January 2013 and was moved to the Rimutaka Incline Railway's Maymorn site for storage on 21 April 2013. It is the only three-car set to be preserved, and its new owners eventually hope to be able to run it on heritage excursions on the commuter network once they have restored it and adapted the unit to run on the higher system voltage.
- DM 49 and D 114 (DM 562 and D 2149) were sold through TradeMe in July 2012. The set was purchased by a family at Belgrove who intend to convert it into two self-contained accommodation units. The set is located on what was once part of the formation for the Nelson Section.
Six D class trailer cars have also found alternative use:
- D 138 (D 2438) and D 169 (D 2751) were sold in 1994 to an individual at Silverdale on Auckland's Hibiscus Coast where they were converted to private residences. They were fitted with twin-beam headlights prior to exiting service and are now in poor external condition.
- D 142 (D 2462) was given to the New Zealand Fire Service for use at their Rotorua Training Centre in March 2012, and delivered by rail to Mount Maunganui from where it was trucked to Rotorua.
- D 145 (D 2497) and D 171 (D 2786) was given to the New Zealand Special Air Service (SAS) for use in anti-terrorist training at Papakura Military Camp. D2497 headed north on 22 July 2012, with D2786 following in October 2012.
- D 174 (D 2826) has been purchased by the same family at Belgrove who purchased DM562 and D2149. It left Hutt Workshops on the back of a trailer on 7 March 2013, and has been placed on tracks with the other set. These cars now give the appearance of being a 3-car set, although all are ex-Johnsonville types.
|Key:||In service||Out of service||Auckland Transport service||Preserved||Overhaul/Repair||Scrapped|
|TMS No.||Original No.||Introduced||Withdrawn||Current status||Current livery||Notes|
|55||1||4 July 1938||November 1981||Scrapped||Midland Red|
|61||2||June 1938||September 1982||Scrapped||Midland Red|
|78||3||June 1938||September 1982||Scrapped||Midland Red|
|84||4||June 1938||April 1983||Scrapped||Midland Red|
|90||5||June 1938||April 1983||Scrapped||Midland Red|
|101||6||June 1938||April 1981||Scrapped||Midland Red|
|118||7||October 1946||July 1983||Scrapped||Midland Red|
|124||8||October 1946||July 1983||Scrapped||Midland Red|
|130||9||December 1946||7 November 1981||Scrapped||Midland Red|
|147||10||August 1949||December 2011||Scrapped||Tranz Metro Two-tone Blue||Scrapped in January 2013.|
|153||11||September 1949||November 2011||Scrapped||Tranz Metro Blue||3-car set. Scrapped in January 2013.|
|176||12||November 1949||October 1987||Scrapped||Midland Red|
|13||October 1949||April 1978||Scrapped||Midland Red|
|182||14||February 1950||June 2012||Scrapped||Tranz Metro Two-tone Blue||One of last 3 units in service. Scrapped in January 2013.|
|199||15||December 1949||May 1986||Scrapped||Midland Red|
|216||16||December 1949||December 2011||Preserved||Midland Red||Named the "Phoenix". Withdrawn July 2001, returned to service October 2008. Preserved by the National Railway Museum of New Zealand, January 2013. Currrently stored.|
|222||17||December 1949||Scrapped||Midland Red||Withdrawn after 16 January 1985.|
|239||18||February 1950||Scrapped||Midland Red||Withdrawal date unknown|
|245||19||April 1950||October 1986||Scrapped||Midland Red|
|251||20||May 1950||March 2012||Scrapped||Tranz Metro Two-tone Blue||3-car set. Scrapped in December 2012.|
|268||21||June 1950||Scrapped||Midland Red||Withdrawal date unknown|
|274||22||June 1950||October 1986||Scrapped||Midland Red|
|280||23||October 1950||February 1989||Scrapped||Olive and Cream|
|297||24||September 1950||December 2011||Scrapped||Tranz Metro Two-tone Blue||Scrapped in January 2013. The last unit to be scrapped.|
|308||25||September 1950||Scrapped||Midland Red||Withdrawal date unknown|
|314||26||December 1950||May 1986||Scrapped||Midland Red|
|320||27||20 March 1951||March 2012||Preserved||Midland Red||Named the "Robyn", "Ferrymead" or "Red Robin". Preserved by the Canterbury Railway Society, October 1988. Returned to service in October 2008. Returned back to Ferrymead on 22 July 2012. In service.|
|337||28||June 1951||February 1987||Scrapped||Midland Red|
|343||29||November 1950||October 1986||Scrapped||Midland Red|
|366||30||August 1951||February 2012||Scrapped||Tranz Metro Two-tone Blue||Scrapped in January 2013.|
|372||31||September 1951||May 1988||Scrapped||Midland Red|
|389||32||September 1951||March 1992||Scrapped||Olive and Cream|
|395||33||September 1951||1997||Scrapped||Olive and Cream||Refurbisheat Eastown|
|406||34||March 1952||October 1986||Scrapped||Midland Red|
|412||35||July 1952||October 1986||Scrapped||Midland Red|
|429||36||July 1952||January 2012||Scrapped||Tranz Metro Two-tone Blue||Scrapped in January 2013.|
|435||37||October 1952||October 1986||Scrapped||Midland Red|
|441||38||December 1952||June 2012||Scrapped||Tranz Metro Two-tone Blue||One of the last 3 units in service. Scrapped January 2013.|
|458||39||December 1952||May 1988||Scrapped||Midland Red|
|464||40||February 1953||May 1992||Scrapped|
|470||41||March 1953||May 2011||Scrapped||Tranz Metro Two-tone Blue||Scrapped in January 2013.|
|487||42||March 1953||Scrapped||Midland Red||Withdrawal date unknown|
|493||43||April 1953||May 1986||Scrapped||Midland Red|
|504||44||July 1953||March 2012||Scrapped||Tranz Metro Two-tone Blue||3-car set. Scrapped in December 2012.|
|510||45||February 1954||June 2012||Preserved||Royal Blue||Preserved. Stored at Steam Incorporated's Paekakariki depot. One of last 3 sets in service.|
|527||46||April 1954||November 2011||Scrapped||Tranz Metro Two-tone Blue||3-car set. Scrapped in January 2013.|
|533||47||December 1953||August 1982||Scrapped||Midland Red|
|556||48||March 1954||March 2012||Preserved||Midland Red||Named the "Cyclops". Refurbished 3-car set. Preserved by the Wellington Heritage Multiple Unit Preservation Trust. Currently stored.|
|562||49||March 1954||January 2012||Preserved||Tranz Metro Two-tone Blue||Sold on TradeMe to a private individual at Belgrove near Nelson in July 2012.|
|2007||101||July 1938||July 1983||Scrapped|
|2015||102||June 1938||April 1981||Scrapped|
|2023||103||June 1938||September 1982||Scrapped|
|2031||104||June 1938||July 1983||Scrapped|
|2058||105||June 1938||March 1986||Scrapped|
|2066||106||June 1938||November 1981||Scrapped|
|2074||107||October 1946||November 1981||Scrapped|
|2082||108||October 1981||September 1982||Scrapped|
|2130||113||November 1949||March 2012||Preserved||Midland Red||556's trailer car. Preserved by the Wellington Heritage Multiple Unit Preservation Trust.|
|2149||114||June 1950||January 2012||Preserved||Tranz Metro Two-tone Blue||562's trailer car. Sold on TradeMe to a private individual at Belgrove near Nelson in July 2012.|
|2157||115||Scrapped||Tranz Metro Two-tone Blue||Scrapped in January 2013. 153's trailer car, part of a three-car set.|
|2304||128||March 1950||July 2001||Scrapped||Midland Red||Scrapped after February 2010.|
|2398||136||Scrapped||Tranz Metro Two-tone Blue||251's trailer car. Scrapped in January 2013. Part of a three-car set.|
|2411||138||December 1950||March 2012||Preserved||Midland Red||556's trailer car. Preserved by the Wellington Heritage Multiple Unit Preservation Trust|
|2438||139||March 1951||January 1994||Preserved||Midland Red||Private residence, Hibiscus Coast|
|2462||142||July 1950||November 2011||Preserved||Tranz Metro Two-tone Blue||One of 3-car set 527's trailer cars, sold to NZ Fire Service and based at their Rotorua training centre.|
|2489||144||June 1951||June 2012||Preserved||Royal Blue||510's trailer car. Preserved, stored at the Steam Incorporated depot in Paekakariki.|
|2497||145||October 1951||November 2011||Preserved||Tranz Metro Two-tone Blue||153's trailer car, now at SAS Training Centre, Papakura|
|2545||150||Jan/Feb 2012||Scrapped||Tranz Metro Two-tone Blue||366's trailer car|
|2553||151||Jan/Feb 2012||Scrapped||Tranz Metro Two-tone Blue||527's trailer car. Part of a three-car set. Later ran with 251. Scrapped January 2013|
|2660||160||Scrapped||Tranz Metro Two-tone Blue||470's trailer car|
|2687||162||July 1953||December 2011||Preserved||Midland Red||216 "Phoenix" trailer car. Preserved by the National Railway Museum of New Zealand, January 2013.|
|2695||163||July 1953||March 2012||Preserved||Midland Red||27's trailer car. Preserved by the Canterbury Railway Society, October 1988.|
|2735||167||Jan/Feb 2012||Scrapped||Tranz Metro Two-tone Blue||147's trailer car|
|2743||168||Scrapped||Tranz Metro Two-tone Blue||504's trailer car. Part of a three-car set. Scrapped January 2013|
|2751||169||August 1953||January 1994||Preserved||Midland Red||Private residence, Hibiscus Coast.|
|2778||170||Jan/Feb 2012||Scrapped||Tranz Metro Two-tone Blue||297's trailer car. Last trailer car to be refurbished at East Town Workshops, only received a partial overhaul. Scrapped January 2013|
|2786||171||July 1952||March 2012||Preserved||Tranz Metro Two-tone Blue||251's trailer car. Now at SAS Training Centre, Papakura|
|2818||173||June 2012||Scrapped||Tranz Metro Two-tone Blue||441's trailer car. Scrapped January 2013|
|2826||174||August 1953||25 June 2012||Preserved||Tranz Metro Two-tone Blue||DM 182's trailer car, part of last 3 sets in service. Now at Belgrove, Nelson with DM 562's set.|
|2842||176||July 1953||January 2012||Scrapped||Tranz Metro Two-tone Blue||DM 429's trailer car.|
|2869||178||July 1953||March 2012||Scrapped||Tranz Metro Two-tone Blue||DM 504's trailer car.|
- Gregor 1981, p. 33–45.
- Hoy 1970, p. 66–69.
- Churchman 1988.
- WILLIAMSON, KERRY (2008-09-06). "Museum-piece all ready to roll". The Dominion Post (Wellington: Fairfax New Zealand).
- "Metlink News". Issue 2. Metlink. May 2007.
- "Changes to Johnsonville train services". Greater Wellington Regional Council. 3 February 2012. Retrieved 1 May 2013.
- "New hope arrives on the Johnsonville line". The Dominion Post. 19 March 2012.
- "The Last English Electric Unit Services". D.J. Castle. June 2012. Retrieved 17 April 2013.
- "Wellington: English Electrics’ last ride". Greater Wellington Regional Council (via Scoop.co.nz). 22 June 2012. Retrieved 24 June 2012.
- "After 74 years, English Electric trains retire". The Dominion Post. 25 June 2012.
- "One Last Evening for DM297". Daniel R Garland. 30 January 2013.
- Awards honour efforts to protect our heritage: Media release
- Churchman, Geoffrey B. (1988). The Story of the Wellington to Johnsonville Railway. Wellington: Industrial Publishing Ltd. ISBN 0959783210.
- Gregor, Alex W (July 1981). New suburban electric trains for Wellington 8 (2/EMCh). New Zealand Institute of Engineers Transactions.
- Hoy, D.G. (1970). "12". Rails out of the Capital. New Zealand Railway and Locomotive Society.
- Parsons, David - New Zealand Railways Motive Power 2002 
|Wikimedia Commons has media related to NZR DM class.|
- NZ History - Johnsonville Line opening day cover.
- New and old units on the Johnsonville Line, 19 March 2012
- Canterbury Rail Society - inside a DM class EMU