View source for SJ Y3

{{unreferenced|date=January 2016}}
{{Infobox Train
| background =
| name = Y3
| image =SJ UB3Y 2161 – JvmKDAJ09474.jpg
| imagesize =250px
| caption =
| interiorimage =
| interiorcaption =
| service =  1966–1990

| manufacturer = [[ASEA]], [[Linke-Hofmann]]
| factory =
| family =
| refurbishment =
| replaced =

| formation =
| fleetnumbers = 1261–1266
| operator = [[Statens Järnvägar]]
| depots =
| lines =

| yearconstruction = 1966–1967
| yearservice =
| yearscrapped =
| numberconstruction =
| numberbuilt =  6
| numberservice =
| numberscrapped =

| carbody =
| carlength = {{convert|19,620|mm|ftin|1|abbr=on}} ([[Rail motor|motor units]])<br>{{convert|21,000|mm|ftin|1|abbr=on}} (trailer)
| width =
| height =
| floorheight =
| platformheight =
| entrylevelorstep =
| art-sections =
| doors =

| maxspeed = {{convert|140|km/h|abbr=on}}
| weight = {{convert|61.9|t|abbr=on|lk=on}}
| capacity =
| acceleration =
| deceleration =
| traction =
| engine = [[Deutz AG]]
| poweroutput = {{convert|910|kW|abbr=on|lk=on}}
| transmission =
| aux =
| powersupply =
| gauge = {{track gauge|sg}}
| electricsystem =
| brakes =
| safety =
}}

'''Y3''' was a series of [[diesel multiple unit|diesel]] [[railcar]]s operated by [[Statens Järnvägar]] (SJ) of Sweden. Six units were delivered by [[Linke-Hofmann]] of Germany in 1966–67, with electrical equipment supplied by [[ASEA]]. They remained in service until 1990, serving first on the unelectrified services [[Stockholm]] – [[Mora (locality)|Mora]] and [[Malmö]] – [[Karlskrona]], later on [[Ystadbanan]].

The Y3 served the same purpose as the electric [[SJ X9|X9]]-series. A variation of configurations was used, with the production consisting of six [[Rail motor|motor cars]], two [[Control car (rail)|cab cars]] and eleven trailers. With motor cars on each end the Y3 could have six trailers between. Although considered to be the first [[Bilevel rail car|double-decker]] train used in Sweden, only the first and last cars of a Y3 train were built to a design somewhat resembling a [[dome car]], whereas the middle coaches were all single-decker (unlike in the [[SJ X40|X40]] and [[Stadler KISS|Stadler DOSTO]]). The series was prone to fires, since the cooling system didn't work sufficiently for the extremely powerful [[Deutz AG|Deutz]] diesel engines introduced in place of the slower and less powerful [[Rolls-Royce Limited|Rolls-Royce]] engines. This was solved through rebuilding the cooling system in the 1970s. Some of the bilevel rail cars were taken out of service in 1982 when the Y3 series was relegated to local traffic on the Malmö – Ystad – Tomelilla route, with the last Y3 coaches retired in 1990.

==External links==
*[http://www.jarnvag.net/vagnguide/y3 Järnväg.net on Y3] {{in lang|sv}}

{{Swedish railway stock}}

[[Category:SJ multiple units|Y03]]
[[Category:Diesel multiple units of Sweden|Y03]]
[[Category:Double-decker rail vehicles]]
[[Category:Train-related introductions in 1966]]