PGO G-MAX 50 Service Manual page 151

E. Rear brake: (M2-50)
1.Rear brake disassembling diagram.
(1)Checking the rear brake hub:
a. measure the inner diameter of rear brake hub.
b.Limit of use: change it when above 111.0mm
2.Checking the brake lining: (M2-50)
a. measure the thickness of the rear brake lining.
b.linit of use: As the thickness is less than 2.0 mm,
change it.
3. Brake pad inspection for M2-125/150/200/220/250