JLG 1500SJ Service Manual - Manual (Page 345)

SECTION 4 - BOOM & PLATFORM
3121262 – JLG Lift – 4-99
10. Looking into the bore from the opposite end of the
housing (1) be sure the timing marks align correctly.
Rotate the piston as necessary until aligned, then
gently tap the piston (3) into the housing until the
gear teeth mesh together. Tap the piston into the
housing until it completely bottoms out against the
ring gear.
11. Insert the shaft (2) into the piston (3). Be careful not
to damage the piston seals. Do not engage the pis-
ton gear teeth yet.
12. Looking at the actuator from the end opposite the
shaft flange, use the existing timing marks to align
the gear teeth on the shaft (2) with the gear teeth on
the inside of the piston (3). When the marks align,
gently tap the flange end of the shaft with a rubber
mallet until the gear teeth engage.
13. Install two bolts in the threaded holes in the flange.
Using a metal bar, rotate the shaft in a clockwise
direction until the wear guides are seated inside the
housing bore.
AS THE SHAFT IS ROTATED, BE CAREFUL NOT TO DISENGAGE
THE PISTON AND HOUSING GEARING.