JLG 1500SJ Service Manual - Manual (Page 337)

SECTION 4 - BOOM & PLATFORM
3121262 – JLG Lift – 4-91
Disassembly
Inspect the actuator for corrosion prior to disassembly.
Severe corrosion can make it difficult to remove the lock
pins (109) and unthread the end cap (04). If corrosion is
evident, soak the lock pins and end cap with penetrating
oil for several hours before disassembling.
Disassembly is easier if the actuator is firmly secured to a
work bench. A pipe vise or mounting fixture works well for
this purpose.
1. Remove port plugs (106.1) (106.2) and drain oil.
Inspect oil for signs of contamination, i.e. water,
metal shavings.
2. Remove the cap screws (113) that cover the end cap
lock pins (109).
3. Using a 1/8" (3 mm) drill bit, drill a hole in the center
of each lock pin to a depth of approximately 3/16" (5
mm).
4. Remove the lock pins using a screw extracting tool
such as an "Easy Out" (a size #2 is shown).
If the pin cannot be removed with the screw extrac-
tor, use a 5/16" bit to drill out the entire pin. Do not
drill deeper than 1/2" (12.7 mm).
5. Install the end cap removal tools provided with the
seal kit. (1/4-20)
6. Using a metal bar or similar tool, unthread the end
cap (4) by turning it counterclockwise.