JLG 18RS Service Manual - Manual (Page 48)

SECTION 3 - CHASSIS & TURNTABLE
3-10 – JLG Lift – 3121284
9. Remove cardan shaft from the splines of output shaft.
10. Separate Intermediate Plate from housing.
11. Remove O-ring 83x2 and Seal Ring from the Intermedi-
ate Plate.
End Cover Disassembly
1. Turn the end cover with the hole conversely on a clean
soft surface. Knock several times using a plastic hammer
on the rear side. Set in order the fallen parts apart.
2. Remove “O”-Rings (2 paces) from the grooves of the bal-
ance plate.
3. Remove the pin using a vice with soft jaws or pliers
knocking on the balance plate and swivelling it round
the pin simultaneously.
Cleaning
Wash all parts (except seals) in a weak solvent on carbon base
and then degreased.
Measuring And Replacement
Measure all parts and compare their actual dimensions with
the nominal ones given in the technical documentation.
Replace any parts with scratches or burrs that could cause
leakage or damage with new ones. Use new seals and washers
when reassembling the motor.
Lubrication
Lubricate all frictioning parts, which should be reassembled
with light film of petroleum jelly.
Assembly
Place bearing housing on clean soft surface. Lubricate shaft
seal and dust seal with light film of clean petroleum jelly.
1. Place shaft seal in the bearing housing and firmly push
with Seal driver.
2. Install the seal ring in the Intermediate plate and assem-
ble it through the studs. Lubricate O-ring 83x2 and place
it in seal groove of Intermediate Plate.
3. Install the cardan shaft into splines of the output shaft.
4. Orientate the Roll-Gerotor set acc.to the figure below
and assemble the rotor splines into the cardan shaft
splines. (If necessary, turn the shaft to one or another
direction for keeping symmetry of rotor towards stator.)
5. Install the valve drive into the rotor spline sector.
6. Mark the rotor at the point where the tip of a spline
tooth is opposite to the bottom of a tooth in the exter-
nal rotor teeth as shown.
7. Mark the bottom of a spline on the valve drive. Line up
mark on rotor and valve drive.
8. Lubricate O-rings 83x2 (2 pcs.) and place them in seal
grooves of both sides of Channel Plate.