JLG 1850SJ Service Manual - Manual (Page 225)

SECTION 5 - BASIC HYDRAULIC INFORMATION & HYDRAULIC SCHEMATICS
3121619 – JLG Lift – 5-55
10. Remove three bolts attaching tapered bushing to pis-
ton.
11. Insert bolts in threaded holes in outer piece of tapered
bushing. Alternately tighten bolts until bushing is loose
on piston. Remove tapered bushing from piston.
12. Remove piston from cylinder rod.
REMOVE SEALS USING A BRASS OR PLASTIC PICK ONLY. DO NOT USE A KNIFE,
SHARP OBJECT, OR SCREW DRIVER. MAKE NOTE OF SEAL ORIENTATION
BEFORE REMOVING FOR PROPER INSTALLATION.
13. Remove and discard two backup rings (13), washer ring
(14), two wear rings (11), and seal (12) from piston (10).
14. Remove capscrew (15) and spacer (16) from rod (7).
15. Remove rod from holding fixture.
NOTE: Record orientation of rings for reassembly.
16. Remove cylinder head (23) from rod (7). Remove and
discard O-Ring (18), backup ring (19), retaining ring (22),
wiper seal (21), rod seal (20), and two wear rings (17).
Rod
Piston
Tapered
Bushing
Rod
Bolt
Figure 5-99. Tapered Bushing Removal
11
11
14
13
Figure 5-100. Piston Disassembly
17
18
19
20
21
22
23
Figure 5-101. Cylinder Head Disassembly