JLG 450A_AJ Series II Service Manual - Manual (Page 70)

SECTION 3 - CHASSIS & TURNTABLE
3-30 – JLG Lift – 3121290
IF REUSING PISTONS, INSTALL THEM IN ORIGINAL BLOCK BORES.
5. Install pistons (11) to slipper retainer (12). Install piston/
retainer assembly in cylinder block. Ensure concave sur-
face of retainer seats on the ball guide. Lubricate pis-
tons, slippers, retainer, and ball guide before assembly.
Set cylinder kit aside on a clean surface until needed.
6. Install journal bearings (13) into housing seats. Use
assembly grease to keep bearings seated during assem-
bly. Ensure locating nubs drop into cavities in seats. If
reusing bearings, install them in original location and
orientation. Lubricate journal bearings.
7. Install swashplate (14) in housing. Tilt swashplate and
guide servo lever ball into its socket in servo piston rod.
Ensure swashplate seats into journal bearings and
moves freely. Lubricate swashplate running surface.
8. Press front shaft bearing (15) onto shaft (16). Press bear-
ing onto shaft with lettering facing out. Lubricate bear-
ing rollers. Install snap-ring (17) on shaft.
9. While holding swashplate in place, turn housing on its
side. Install shaft/bearing assembly into housing from
flange end. Install snap ring (18).
14
13
13
13. Journal Bearings
14. Swash Plate
Figure 3-20. Swash Plate and Journal Bearing
15. Front Shaft Bearing
16. Shaft 17. Snap Ring
18. Snap Ring
Figure 3-21. Shaft and Front Bearing