I saw a new NISSAN W1F4A35U machine when i was looking around i was unable to see a hydraulic filter or transmission filter. like the engine oil filer those were not to be seen,

do they come with only a return strain filter that is mounted in side the transmission and hydraulic system ? what is the filter replacing period ?

i am not very familiar with Forklifts dont no if this is a common system that you place filter inside the transmission.