JLG 450A_AJ Series II Service Manual - Manual (Page 227)

SECTION 4 - BOOM & PLATFORM
3121290 – JLG Lift – 4-15
10. Insert piston (3) in housing (1) until outer piston seal (12)
is touching inside housing bore.
11. Looking from angle shown, rotate piston (3) until marks
on piston and housing (1) line up as shown.
12. Using a rubber mallet, tap piston into housing to point
where gear teeth meet.
13. Look from opposite end of housing (1) to see if timing
marks line up. When they do, tap piston (3) in until gear
teeth mesh together. Tap piston into housing until it
bottoms out.
14. Install shaft (2) into piston (3). Do not damage seals. Do
not engage piston gear teeth yet.