supply of dmu tc bogie bolster for secondary air suspension bogies to drg. no.dmu/tc7-0-4-701, alt ? f ? ( without nylon bush where ever applicable) andrdso specn: c- 9202, rev.-02.the firm shall fulfil the requirements as pericf md specn.-147, issue status-01 ,rev.-02, with amendment. no.- 01.item shall be suitably packed to avoid ingress of water in center pivot housingand spigot housing. threaded air connection at bolster end shall be closed.bio-degradable plastic / wooden covers may be used for closing.all machined areas shall be coated with grease (lithium based) beforepacking.dmu tc bogie bolster for secondary air suspension bogies to drg. no.dmu/tc7-0-4-701, alt ? f ? ( without nylon bush where ever applicable) andrdso specn: c- 9202, rev.-02.the firm shall fulfil the requirements as pericf md specn.-147, issue status-01 ,rev.-02, with amendment. no.- 01.item shall be suitably packed to avoid ingress of water in center pivot housingand spigot housing. threaded air connection at bolster end shall be closed.bio-degradable plastic / wooden covers may be used for closing.all machined areas shall be coated with grease (lithium based) beforepacking.,dmu tc bogie bolster for secondary air suspension bogies to drg. no.dmu/tc7- 0-4-701, alt ? f ? ( without nylon bush where ever applicable) andrdso specn: c- 9202, rev.-0 2.the firm shall fulfil the requirements as pericf md specn.-147, issue status-01 ,rev.-02, wi th amendment. no.- 01.item shall be suitably packed to avoid ingress of water in center piv ot housingand spigot housing. threaded air connection at bolster end shall be closed.bi o-degradable plastic / wooden covers may be used for closing.all machined areas shall b e coated with grease (lithium based) beforepacking. [ warranty period: 30 months after the dat e of delivery ] ]