JLG 3246E2 ANSI Service Manual - Manual (Page 25)

SECTION 2 - PROCEDURES
3120737 – JLG Lift – 2-11
11. Remove the cylinder rod from the holding fixture.
Cleaning and Inspection
1. Clean all parts thoroughly in an approved cleaning
solvent.
2. Inspect the cylinder rod for scoring, tapering, ovality,
or other damage. If necessary, dress rod with
Scotch Brite or equivalent. Replace rod if necessary.
3. Inspect threaded portion of rod for excessive dam-
age. Dress threads as necessary.
4. Inspect inner surface of cylinder barrel tube for scor-
ing or other damage. Check inside diameter for
tapering or ovality. Replace if necessary.
5. Inspect piston surface for damage and scoring and
for distortion. Dress piston surface or replace piston
as necessary.
6. Inspect seal and o-ring grooves in piston for burrs
and sharp edges. Dress applicable surfaces as nec-
essary.
7. Inspect cylinder guide inside diameter for scoring or
other damage and for ovality and tapering. Replace
as necessary.
8. Inspect seal and o-ring grooves in guide for burrs
and sharp edges. Dress applicable surfaces as nec-
essary.
9. Inspect cylinder guide outside diameter for scoring
or other damage and ovality and tapering. Replace
as necessary.
10. Inspect the oil ports for blockage or the presence of
dirt or other foreign material. Repair as necessary.
Assembly
NOTE: Prior to cylinder assembly, ensure that the proper
cylinder seal kit is used. Refer to the Illustrated Parts
Manual.
Apply a light film of hydraulic oil to all components
prior to assembly.
1. Using suitable protection, clamp the cylinder rod
section one in a vise or similar holding fixture.
2. Place a new wiper ring, rod seal, o-ring, and back-up
ring into the cylinder rod guide grooves.
1. Locknut
2. Seal, Piston
3. O - Ring
4. Piston
5. Barrel
6. Rod
7. O - Ring
8. Ring, Back-up
9. Seal
10. Wiper
11. Guide
Figure 2-5. Steer Cylinder Assembly