JLG 740AJ, Руководство по обслуживанию и ремонту

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SECTION 4 - BOO M & PLATFOR M
4-30 3121160
Assembly
NOTE: Lubricate all seals and o-rings with clean hydraulic oil prior
to assembly.
1. Install piston seal (7) and rod seal (6) on the piston
sleeve (3).
NOTE: Apply a coat of grease to the thrust ring before sliding onto
the shaft.
2. Install new seal (8), thrust ring (10) and bearing (9) on
shaft (2).
NOTE: Apply a coat of grease to the thrust ring before sliding onto
the end cap.
3. Install new seals (11), backup ring (12), cap bearing (13),
bearing packing (14) and thrust ring (10) on end cap (5).
4. Place the actuator in the vertical position, install the pis-
ton sleeve (3) in timed relation to the housing (1).
DO NOT MISALIGN THE SLEEVE TOO MUCH ANY ONE WAY, AS IT WILL MARK
THE CYLINDER BORE.
NOTE: The timing marks (the small punch marks on the face of
each gear), must be aligned for proper shaft orientation
(See Actuator Timing).
5. Install the shaft (2) into housing (1) by aligning the
proper punched timing marks. (See Actuator Timing
Figure 4-19.)
6. Temporarily tape the threaded portion of the shaft will
help installation past the shaft seals (masking tape).
7. The end cap (5) is torqued to 40-50 ft. lbs. (54 - 68 Nm),
such that the actuator begins rotation at approximately
100 psi (6.895 bar) pressure.
8. The end cap must be secured against the shaft by
installing axial setscrews (4).
Figure 4-19. Actuator Timing