JLG 1850SJ Service And Maintenance Manual page 354

SECTION 5 - BASIC HYDRAULIC INFORMATION & HYDRAULIC SCHEMATICS
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.
Figure 5-113. Tapered Bushing Removal
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
11
Figure 5-114. Piston Disassembly
5-102
13
11
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).
22
21
20
23
Figure 5-115. Cylinder Head Disassembly
19
18
17
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