SkyTrak 6036 Service Manual User Manual
Page 332
Hydraulic System
8.116
Model 6036 Legacy
Figure 8-76 Lift/Lower Cylinder Components
11. Remove the small o-ring (Fig. 8-76, 12) from within
the piston (8).
12. Remove the o-ring (Fig. 8-76, 13) and back-up ring
(14) from the head gland (7). Slide the rings off the
rod (5) to remove them from the rod.
13. Remove the precision wearbands (Fig. 8 -76, 15)
from within the head gland (7). Remove the square
ring (17), the sealed, outside diameter heavy-duty
rod wiper (18) and the deep Z-seal with back-up (16)
from the other end of the head gland.
c. Lift/Lower Cylinder Cleaning
1. Remove all hydraulic fluid, dirt and debris from the
inner surface of the cylinder tube (Fig. 8 -76, 2).
2. Discard all seals, back-up rings, o-rings, etc.
Replace with new items from a complete seal kit
(Fig. 8-76, 19) to help ensure proper cylinder
function.
3. Clean all metal parts with an approved cleaning
solvent such as trichlorethylene. Carefully clean
cavities, grooves, threads, etc.
Note: If a white, powdery residue is present on threads
and parts, it can be removed. Clean the residue away
with a soft brass wire brush prior to reassembly, and
wipe with Loctite “T” cleaner before reinstallation.
d. Lift/Lower Cylinder Inspection
1. Inspect internal surfaces and all parts for wear,
damage, etc. If inner surface of the tube (Fig. 8-76, 2)
does not display a smooth finish, or is scored or
damaged in any way, replace the tube. Often, dirty
hydraulic fluid causes failure of internal seals and
damage to the smooth surface within the tube.
2. Remove slight scratches on the piston, rod or inner
surface of the tube with very fine grit emery cloth.
Use the emery cloth in a rotary motion to polish out
and blend the scratch(es) into the surrounding
surface.
3. Clean parts with trichlorethylene.
4. Check that the rod (Fig. 8-76, 5) is straight. If it is
bent, install a new rod.
MA7070
8
6
11
9
13
12
20
17
18
1
5
21
2
4
3
14
15
16
7
10
Torque to
30-35 lb/ft
(41-47 Nm)
Torque to
300-400 lb/ft
(407-542 Nm)
Apply Loctite #271 to
Threads and Torque
to 1750-2000 lb/ft
(2373-2712 Nm)
19