JLG 600SC_660SJC Service Manual - Manual (Page 127)

SECTION 4 - BOOM & PLATFORM
3121607 – JLG Lift – 4-25
20. Remove piston I.D. seal (200).
Inspection
1. Clean all parts in a solvent tank and dry with com-
pressed air before inspecting. Carefully inspect all criti-
cal areas for any surface finish abnormalities: Seal
grooves, bearing grooves, thrust surfaces, rod surface,
housing bore, and gear teeth.
2. Inspect thrust washers (304) for rough or worn edges
and surfaces. Measure thickness is within specifications
(Not less than 0.092” or 2.34 mm).
3. Inspect wear guide condition and measure thickness
(not less than 0.123” or 3.12 mm).