JLG 1500SJ Service Manual - Manual (Page 305)

SECTION 4 - BOOM & PLATFORM
3121262 – JLG Lift – 4-59
4.7 BOOM LUBRICATION APPLICATION
This procedure applies to booms after assembly or during
annual application using Super Lube® lubricant (JLG p/n
3020042).
1. Position the boom on the boom rest using the 500lb
capacity setting.
2. Telescope main boom section as far as it will extend
at this position, approximately 3 ft. (0.9 m).
3. From the front of the machine (boom pivot end),
moderately apply lubricant to the interior surfaces of
the base boom, inner mid boom, and outer mid
boom. To prevent misdiagnosis of hydraulic leaks,
take care to prevent excessive application of lubrica-
tion.
4. At the rear of the machine, apply lubricant to the
side, top and bottom surfaces of the fly boom, outer
mid, and inner mid specifically to wear pad contact
paths. To prevent misdiagnosis of hydraulic leaks,
take care to prevent excessive application of lubrica-
tion.
5. After application of the lubricant is complete, cycle
the boom through its full range of travel 2 times.
4.8 PLATFORM LEVELING CYLINDER
Removal
1. Ensure the platform is supported by blocking or an
adequate lifting device.
2. Remove the bolt and keeper pin securing the retain-
ing pin that secures the cylinder rod to the platform
assembly and remove the pin.
3. Tag and disconnect the hydraulic hoses from the
platform level cylinder. Cap or plug all openings. Tag
and disconnect the electrical harness running to the
cylinder.