Disassembly (Fig. 99)
Removeoilfromsteering cylinderbyslowlypumping
thepistonrod.Afterremovingoilfromcylinder,plugboth
ports and thoroughly clean the outside of the cylinder.
4. Using a wrench on the piston rod flats to prevent the
rod from turning, install and tighten lock nut (item 16).
Torque lock nut to 40 ft--lb (54 N--m).
1.
5. Put a coating of clean hydraulic oil on all cylinder
parts to ease assembly.
2.
Remove snap ring (item 5) that secures head in bar-
rel.
6. Carefully slide piston rod assembly into cylinder bar-
rel taking care to not damage seals or O--rings.
3.
Grasp end of piston rod and use a twisting and pull-
ing motion to carefully extract piston, piston rod and
head from cylinder barrel.
7. Secure head in barrel with snap ring. Make sure that
snap ring is fully seated in groove in barrel.
4.
rodfromturning,removelock nut(item16)fromrod.Re-
move piston and head from rod.
Using a wrench on the piston rod flats to prevent the
8. If barrel end ball joint (item 20) was removed, install
ball joint to barrel as follows:
A. Thread ball joint into barrel so that roll pin hole in
joint aligns with hole in barrel.
5.
6.
pressed air. Do not wipe parts dry with paper towels or
cloth. Lint in a hydraulic system will cause damage.
Remove all seals and O--rings from head and piston.
Wash parts in clean solvent. Dry parts with com-
B. Drive roll pin into aligned holes in barrel and ball
joint.
C. Tighten jam nut.
7.
Carefully inspect internal surface of barrel for dam-
9.
If piston rod end ball joint (item 4) was removed, fully
age (deep scratches, out--of--round, etc.). Replace en-
tire cylinder if barrel is damaged. Inspect piston rod and
piston for evidence ofexcessive scoring, pitting or wear.
Replace any damaged parts.
retract piston rod and thread ball joint onto rod so that
center to center length is from 14.270” to 14.330” (362.5
to 363.9 mm) (Fig. 100). Tighten cap screw (item 2) and
lock nut (item 3).
8.
loosen cap screw (item 2) and lock nut (item 3) and then
unscrew ball joint from piston rod.
If piston rod ball joint (item 4) removal is necessary,
9.
If necessary, remove barrel end ball joint (item 20)
from barrel as follows:
A. Loosen jam nut (item 19).
B. Drive roll pin (item 18) from barrel.
C. Unscrew ball joint from barrel.
Assembly (Fig. 99)
14.270”
to 14.330”
(362.5
to 363.9 mm)
Figure 100
1.
der. Put a coating of clean hydraulic oil on all new seals
and O--rings.
Use a complete repair kit when rebuilding the cylin-
2.
new O--ring, back--up ring, rod seal and rod wiper to
head.
Install new O--ringsand slipper seal tothe pistonand
3.
Lubricate shaft with clean hydraulic oil. Slide head
and piston onto piston rod.
Groundsmaster 5900/5910
Page 4 -- 137
Hydraulic System
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