JAVELIN MACHINERY (AUSTRALIA)
J800 /J900 OPERATION MANUAL
(incl. Troubleshooting Machine Problems)
JULY 2016
Page 23
Red Polyurethane 100mm (4”) Sleeve (Expansion Sleeve)
The 4” wide red polyurethane sleeve (see
Figure 1
) is a new accessory which fits on
the section of the mandrel where the expansion jaws are located. Because it is
softer you will find that it expands more evenly and therefore grips the I/D of the tape
core more securely. As there is a lot of wear on this part of the rubber sleeve it may
also extend the life of the tan coloured rubber sleeve. You can easily replace just
the red section on its own:
Replacement of Red Polyurethane Sleeve
•
Remove the mandrel from the machine.
•
Use plastic hammer and a wide bladed screwdriver or wedge to drive red
sleeve towards the right hand end of the mandrel until internal jaws are
exposed.
•
Wrap adhesive tape around jaws.
•
Remove red sleeve.
•
Push on new sleeve to hold jaws in position.
•
Remove tape and tap sleeve home to correct position.
IMPORTANT NOTE (RED SLEEVE):
Over an extended period the (red) expanding sleeve may develop a bulge and
make it difficult to slide log rolls over the red sleeve.
To prevent this we
recommend that you occasionally loosen the grub screw in the retaining collar
(Fig. 2) and slide the sleeves down the mandrel as show in Fig. 1 to relieve
the pressure on the expanding sleeve. Then just move the sleeves back into
position and slide the retaining collar against the tan sleeve and tighten the
grub screw. Do not push the collar hard against the sleeve, as you will only
cause the problem with the red sleeve to re-occur more quickly.
FIBRE STRIP REPLACEMENT NON-ROTATING MANDREL -
To replace fibre strip:
•
Remove old fibre strip with sharp chisel or knife.
•
Clean the ‘FLAT’ on the mandrel with solvent.
•
Glue on new fibre strip with 2 pack - 24 hours araldite or similar high strength
adhesive.
•
Hold in position with PVC - Vinyl tape until dry.
•
Use emery paper or file to remove excess adhesive.
