JLG 600SC_660SJC Service Manual - Manual (Page 134)

SECTION 5 - CAT CHASSIS (S/N 0300128000 TO PRESENT)
5-42 – JLG Lift – 3121157
5. Remove brake piston (17) by blowing compressed
air from oil passage of parking brake release port.
Remove also collar (21) using a jig.
6. Pull out cylinder block (7), pin (12), retainer holder
(13), retainer plate (14), and piston sub assembly
(15).
NOTE: Be careful not to damage sliding surface of cylinder
block.
7. Remove swash plate (5), steel balls (6), piston (24),
and spring (25).
8. Grip the base plate (32) with vise. Loosen socket
head bolts (60) to remove flange (37).
9. Remove spring (35) and spring seat (34).