JLG 600SJ Service And Maintenance Manual page 203

2. Install the thrust washer (304) onto shaft (2) and end
cap (4).
3. Install the wiper seal (304.1/green 0-ring) into it's
groove on the shaft (2) and end cap (4) around the
outside edge of the thrust washer (304).
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SECTION 4 - BOOM & PLATFORM
4. Using a seal tool install the main pressure seal (205)
onto shaft (2) and end cap (4). Use the seal tool in a
circular motion.
5. Install the wear guide (302) on the end cap (4) and
shaft (2).
6. Install the inner T-seal (200) into the piston (3) using
a circular motion.
Install the outer T-seal (202) by stretching it around
the groove in a circular motion.
– JLG Lift – 4-31