Edition
Manual
Chapter
Page
2008-10-23 Workshop Manual, Stiga Titan 4 Hydraulic system
40
Changing of sealing rings
1. Remove the body from the vise.
2. Note the fittings of the two sealing rings (O
and R) and remove them with a screwdriver
or similar.
3. Fit the new sealing rings in the same direction
as noted above. Use a sleeve with the same
diameter as the sealing rings.
4. If necessary, replace the O-ring at the pres-
sure limiting valve (Q).
Assembly of the steering servo
1. Set up the steering servo in a vise. The unit
must be set entirely vertical. See below.
No contaminants must enter the
hydraulic system. This causes
serious damage to components of
the systems.
2. Assemble all parts in the reverse order.
Replace all O-rings (3xG, 5xB) with new one
during the assembly.
Remark the following important advises dur-
ing the assembly:
• Apply som motor oil on the sealing ring
surfaces.
• Check that the locking pin in the valve
shaft not protrude during the insertion. If
not, there is a risk of locking in the body
groves.
• The damper rod shall be fitted in hole (P).
See the relation to the oval at the body.
• The flow disc (J) shall be turned with the
bigger diameter of the holes upwards.
• The connection plate shall be turned with
connection (P) in hole (P). See the relation
to the oval at the body.
3. If the O-ring at the pressure limiting valve (B)
is replaced, the pressure must be readjusted
to 125 bar.
4. Assemble the steering servo to the machine.
See section 3.
Mark Märke Zeichen
P
Hole Hål Loch
P
Hole Hål Loch
P
Ref. P
A
C
D
E
F
G
H
G
J
K
M
N
G
O
P
Q
R
L
B