d.
Remove the seal (10), ring (11), o-ring (12) and head (13).
e.
Remove the nut (20) from the rod (6).
f.
Remove the piston (19) and o-rings (14, 16, 17 and 18).
4-11.1.3 Cleaning, Inspection and Repair.
a.
Clean all metal parts in an approved solvent.
b.
Inspect the interior of the barrel. The interior surface must be smooth.
c.
Inspect all parts for excessive wear or damage.
CAUTION
Do not use a wire brush or abrasive material for cleaning.
d.
Thoroughly clean all grooves in which o-rings are installed.
e.
Replace all o-rings and seals, and any other parts considered unserviceable.
4-11.1.4 Assembly.
a.
Install o-rings (16, 17 and 18) on piston (19) and o-rings (12 and 14), ring (11) and seal (10) on head (13).
b.
Assemble head (13) and piston (19) on rod (6) and install nut (20).
c.
Insert the assembled rod and piston into bore of cylinder barrel (23).
d.
Install cap (9) over rod and thread onto barrel (23). Install plug and setscrew (8, 7).
e.
Install protector (15) on rod (6), then install lug (5), bolt (4) and nut (3).
4-11.1.5 Installation.
a.
Position cylinder on mount and install anchor pin (22) and spring pin (21).
b.
Position lug (5) on rotary table and install anchor pin (2) and spring pin (1).
c.
Connect hydraulic lines to cylinder.
4-12 MAINTENANCE OF LEVELING JACKS
4-12.1 Hydraulic Leveling Jack. (Figure 4-32)
NOTE
Instructions for front and rear leveling jacks are the same.
4-12.1.1 Disassembly.
a.
Disconnect hose (1) at elbow (2). Remove elbow (2) and nipple (3).
b.
Unscrew check valve (4), with fittings, from nipple (5). Remove nipple (5) from jack.
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