slack adjuster assembly (upper) to rdso drg. no.-skvl-189 alt.-1 & rdso drg. no.-skvl-190 alt-1 with bushes alone to material mn steel to irs-r65/78. i. item no.03 of rdso drg no.-skvl- 189 alt-1 is required as per clw drg no.06/4/19/147 alt.-1. ii. two
