Hyundai HL955 Manual page 398

4) 4) INSPECTION HINTS INSPECTION HINTS
(1) Check to see that there are no scratches
or metal deposits on the sliding surface
(1), and that there is no axial play (2),
(pistons must only be replaced as a set).
(2) Check cylinder bores (1) and splines (2).
(3) Free of grooves, no signs of wear.
(4) Cylinder sliding surface free of grooves,
no wear, no embedded foreign particles.
That there are no scratches on the control
plate. (Only replace them as a set).
2
2
4-55
1
2
7609A4BS54
1
7609A4BS55
7609A4BS56
7609A4BS57