▁a ▁more ▁modern ▁design ▁turned ▁parc els ▁v ans ▁in ▁the ▁ 1 9 8 0 s . ▁ ▁The ▁Nor ther ner ▁was ▁the ▁first ▁of ▁the ▁substantial ly ▁over h au led ▁carriage ▁trains ▁to ▁be ▁fitted ▁with ▁a ▁new ▁type ▁of ▁bog ie ▁of ▁Korean ▁manufact ure , ▁which ▁offered ▁a ▁superior ▁quality ▁ride ▁to ▁its ▁Tim ken - built ▁prede cess ors , ▁class ed ▁X 2 5 3 3 0 . ▁The ▁new ▁bog ies , ▁class ed ▁X 2 8 0 2 0 ▁by ▁N Z R , ▁were ▁based ▁on ▁the ▁K ink i ▁bog ies ▁as ▁well ▁as ▁bog ies , ▁class ed ▁X 2 8 2 5 0 ▁by ▁N Z R , ▁used ▁under ne ath ▁the ▁Silver ▁Star ▁carri ages . ▁Sub st ant ial ▁work ▁was ▁carried ▁out ▁on ▁all ▁ 1 9 ▁carri ages ▁under frames ▁to ▁facil itate ▁the ▁ 3 8 ▁bog ies ' ▁pla cement ▁under ne ath . ▁The ▁under frames ▁were ▁raised ▁to ▁make ▁easier ▁the ▁fitting ▁of ▁the ▁newer ▁bog ies , ▁and ▁draw ge ar ▁lower ed ▁the ▁same ▁distance . ▁ ▁Following ▁a ▁government ▁decision ▁that ▁operating ▁subs id ies ▁for ▁long - distance ▁passenger ▁trains ▁would ▁ce ase , ▁Sunday , ▁ 2 6 ▁April ▁ 1 9 8 7 ▁saw ▁d ining ▁cars , ▁sleep ing ▁cars , ▁nearly ▁ 1 0 0 ▁jobs ▁and ▁$ 4 ▁million ▁in ▁operating ▁costs ▁removed ▁from ▁this ▁service ▁and ▁until ▁Sunday , ▁