JLG 450A II Series, Service And Maintenance Manual

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SECTION 3 - CHASSIS & TURNTABLE
3121290 – JLG Lift – 3-31
10. Verify swashplate and bearings are properly seated.
Install cylinder kit (19) onto shaft. Install with slippers
facing swashplate. Rock shaft to align block splines and
slide cylinder kit into place. Orient motor with shaft
pointing downward and verify cylinder kit, swashplate,
journal bearings, and servo piston are all secure and
properly installed.
11. Lubricate and install servo spring (20), and minimum
angle stop (21) into housing bore.
12. Press rear shaft bearing (22) into endcap. Install bearing
with letters facing out. Press until bearing surface is 0.08
±0.01 in (2 ±0.25 mm) above endcap surface.
13. Install timing pin (23) into bore in endcap. Install pin
with groove facing toward or away from shaft. Press pin
until end protrudes 0.12 ±0.01 in (3 ±0.25 mm) above
endcap surface.
14. Install valve plate (24) on endcap. Install valve plate with
yellow surface toward cylinder block. Align slot in valve
plate with timing pin. Apply a liberal coat of assembly
grease to endcap side of valve plate to keep it in place
during installation.
19
19. Cylinder Kit
Figure 3-22. Cylinder Kit Installation
20
21
20. Servo Spring
21. Minimum Angle Stop
Figure 3-23. Servo Spring and Minimum Angle Stop
23
23
22
24
3 mm
[0.12 in]
2 mm
[0.08 in]
23
22
22. Rear Shaft Bearing
23. Timing Pin
24. Valve Plate
Figure 3-24. Valve Plate and Rear Bearing