Hardi 3500 EXPLORER, Operator'S Manual

Page: 27 / 52

27
3500 / 4000 EXPLORER
A = Clip
B = Connecting Piece
C = Valve Flap Assembly
D = Seal
E = Valve Seat
F = O-rings
A
B
C
D
E
F
A
B
Fig 68
Tyres
Should it be necessary to replace tyres, use these rules
when doing so, or have a specialist do the job:
•
Always clean and inspect the rim before mounting.
• Always check that the rim diameter corresponds
exactly to the rim diameter moulded on the tyre.
• When fitting new tubed tyres always fit new tubes of
recommended size and of good condition.
• Inspect inside the tyre for dirt or foreign bodies and
remove them if installing a tube.
• Do not use tubes in tubeless tyres.
• Tyres with irreparable damages must never be used.
• Inspect inside the tyre for cuts, penetrating objects or
other damage. Repair before installing tube.
• Before mounting always lubricate both tyre beads
and rim flange with an approved lubricating agent or
equivalent anti-corrosion lubricant. Never use petro-
leum based greases and oils because they may
result in damage to the tyre. Using an appropriate
lubricant means the tyre will never slip on the rim.
• Always use specialised tools as recommended by
the tyre supplier for mounting the tyres.
• Make sure that the tyre is centred and the beads are
perfectly seated on the rim. Otherwise danger of
bead wire tear can occur.
• Inflate the tyre to 100 - 130 kPa (14.5 - 19 psi) then
check whether both beads are seated perfectly on the
rim. If not, deflate the assembly & re-centre the beads
before starting inflation. If the beads are seated cor-
rectly on the rim, inflate the tyre to a maximum of 250
kPa (36 psi) until they seat perfectly on the rim.
• Never exceed the max mounting pressure moulded
on the tyre.
• After mounting tyres adjust inflation pressure to
operation pressure recommended by the tyre manu-
facturer.
SeeTyre pressures and Load limits (P 32).
WARNING! Bad seating of the tyre on the rim could
cause the tyre to burst, leading to serious injury or death.
CAUTION! Never mount or use damaged tyres or rims!
CAUTION! Using damaged, ruptured, distorted,
welded or brazed rims is not acceptable and may
be the cause of serious injury.
NOTE! Check the function of the valve with clean
water before filling chemicals into the tank.
Drain valve seal
If the main tank drain valve leaks, the seal and seat can
be changed the following way:
NOTE! Do not enter the inside of the tank - the
parts can be changed from underneath the tank.
WARNING! Use an eye/face protection mask
when dismantling the tank drain valve.
1 Make sure the tank is empty and clean.
2 The valve must be closed and the string loose.
3 Pull out the clip ( A Fig 68) and pull down the con-
necting piece ( B Fig 68). The entire valve assembly
can now be pulled out.
4 Check the cord and valve flap assembly ( C Fig 68)
for wear, replace the seal ( D Fig 68) and reassemble.
5 Assemble the valve assembly again using a new
valve seat (
E Fig 68). Lubricate the O-rings ( F Fig
68) before assembly.
6 Fit the clip ( A Fig 68) again.
Poor seals are usually caused by missing, damaged,
dry, deformed or incorrectly seated O-rings or gaskets
or foreign bodies.
Therefore, in case of leaks,
do not over-tighten .
For radial connections, only hand tighten them.
• Disassemble, check condition and position of O-
ring or gasket, clean, lubricate and reassemble.
• Lubricate O-ring all the way round before fitting
on to the nozzle tube. Use non-mineral lubricant.
For axial connections: a little mechanical leverage may be
used.
Hoses and fittings
Fig 70
Fig 69