Mack MRU - Page 32

28MAINTENANCEANDLUBRICATION
PrimaryLNGTankVentPiping
Fromthefactory,theventpipingfromtheprimaryLNGtankventsisattachedtothe
intakestackbydisposableplasticstraps.Thepipingshouldberemovedfromthe
intakestackandplumbedupandoverthebodybythebodyinstallers.
CAUTION
Itisimportanttokeeptheprimary
pressureventfreeofblockagedueto
ice,snowordebris.
CAUTION
IfLNGvehiclesmustbeparkedor
workedonindoorsforshortperiodsof
time,pipingfromtheprimaryLNGtank
ventpipetotheoutsideofthebuilding
shouldbeprovided.De-fuelingor
removaloftheLNG/CNGtanksis
recommendedforvehiclesstored
indoorsforlongperiodsoftime.