Schwing SP 305, Руководство по эксплуатации

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Maintenance
60 8/4/11
Operation Manual - SP 305
5. Set up the face plate as follows:
• 3/4” bolt
• Lock washer
• Faceplate w/chamfer opposite bolt head
• O-ring
• Bushing w/chamfer facing back
• O-ring
6. Coat threads of center bolt with Never Sieze .
7. Remove the alignment bolt and replace it with the
3/4” center bolt and face plate.
8. Tighten the 3/4” bolt until tight.
9. Open the shutoff valve. (Note that the unit will not
cycle with this valve closed.) Repeat procedure for
the other side.
Changing the material cylinders
The material cylinders also eventually wear out. They
are considered worn out when the inside diameter has
grown 3 millimeters beyond the specification for new.
For example, a 750-18 has 180mm material cylinders.
When the inside diameter reaches 183 mm, they are
worn out. With 150’s they are worn out at 153, etc.
Normally, it is the end attached to the valve that wears
out first, because it sees the most concrete. The
waterbox end may be in brand new condition, because
that end never experiences concrete. For this reason,
the material cylinders were designed to be able to flip
them end-for-end. That way you can move the worn
out part to the waterbox and the like-new part to the
concrete valve for double the life. If you are going to
do this, you have to catch the wear on the material
cylinders before they get too thin or break through in
one or more spots. When that happens you can’t flip
them, because they would be structurally too weak to
hold the pressure forces at the waterbox end.
The actual act of changing and aligning the material
cylinders was the subject of a service bulletin in 1986.
The procedure still applies today. Contact Schwing’s
Service Department at (651) 429-0999 if you need a
copy of the bulletin.
Inspecting hydraulic hoses
Hydraulic hoses should be checked during routine
inspections. Check for damage to the outer layer or
fittings. For example; Wire reinforcement is exposed,
separation from the fitting, chafing, cuts, cracks, brittle
outer layer or any other type of deformation like layer
separation, blistering, crushing, corrosion, or kinking.
In addition check for leaking fittings or improper fit.
NOTE!
Hydraulic hoses should be replaced every six
years to avoid the possibility of accidental
rupture and possible personal injury. The
date of manufacture of a hydraulic hose can
be found stamped into the hose fitting.
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