Piston seal kit installation -11, Tapered bushing installation -11, Seating the tapered bearing -11 – JLG 260MRT ANSI Service Manual User Manual

Page 33

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SECTION 2 - PROCEDURES

3121108

– JLG Lift –

2-11

1. Using suitable protection, clamp the cylinder rod in

a vise or similar holding fixture as close to piston as
possible.

2. Carefully thread the piston on the cylinder rod hand

tight, ensuring that the o-ring and back-up rings are
not damaged or dislodged.

3. Thread piston onto rod until it abuts the spacer end

and install the tapered bushing.

NOTE: When installing the tapered bushing, piston and mat-

ing end of rod must be free of oil.

4. Assemble the tapered bushing loosely into the pis-

ton and insert JLG capscrews (not vendor cap-
screws) through the drilled holes in the bushing and
into the tapped holes in the piston.

5. Tighten the capscrews evenly and progressively in

rotation to the specified torque value. (See Table 2-1,
Cylinder Component Torque Specifications
.)

6. After the screws have been torqued, tap the tapered

bushing with a hammer (16 to 24 oz.) and brass
shaft (approximately 3/4" in diameter) as follows;

a. Place the shaft against the cylinder rod and in

contact with the bushing in the spaces between
the capscrews.

b. Tap each space once; this means the tapered

bushing is tapped 3 times as there are 3 spaces
between the capscrews.

7. Re torque the capscrews evenly and progressively

in rotation to the specified torque value spec.

8. Remove the cylinder rod from the holding fixture.

Figure 2-10. Piston Seal Kit Installation

Figure 2-11. Tapered Bushing Installation

Figure 2-12. Seating the Tapered Bearing

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