JLG X20JP - X600AJ Service Manual - Manual (Page 187)

SECTION 5 - HYDRAULICS
3121623 – JLG Lift – 5-9
Cleanness and inspection
Cylinder Cleaning Instructions
1. Discard all seals, back-up rings and o-rings. Replace
with new items from complete seal kits to help
ensure proper cylinder function.
2. Clean all metal parts with an approved cleaning sol-
vent such as trichlorethylene. Carefully clean cavi-
ties, grooves, threads, etc.
NOTE: If a white powdery residue is present on threads and parts,
it can be removed. Clean the residue away with a soft
brass wire brush prior to reassembly, and wipe clean
before reinstallation.
Blow pressurized air on the connection of the manifold for
cleaning.
Verify the integrity of the tube checking that the surface
doesn't present scratches.