12/19
NT 1101-G00 08.10 AX40 - ASX40 e
4.2 Re-assembling and disassembling the
wheel
Disassembly and reassembly of the wheel
3
are required
when :
- Replacing the shaft seal
26
.
- Performing a complete overhaul.
- Disassembling or replacing the bearing box or the
reduction gear.
For disassemble the wheel
3
, the pump hose must be
removed (see § REPLACING THE HOSE).
4.2.1 DISASSEMBLING THE WHEEL
1. Loosen screws
20a
in the hub
20
.
2. Tighten one of the screws
20a
into the tapped hole of
the hub
20
provided to pull out the cone.
3. Remove the wheel
3
by sliding it along the central axis.
4.2.2 ASSEMBLING THE WHEEL
1. Check the shaft seal
26
and change it if necessary
(see § MAINTENANCE).
2. Assemble the shaft seal
26
, the spring must be seen
inside the pump body
1
.
3. Check the reduction gear shaft or the bearing box key
109
and change it if necessary.
4. Check that the shoes have no dents or deep scratches
that may quickly dereriorate the hose (see § REPLA-
CING THE SHOES).
5. Assemble the hub
20
in the wheel center.
6. Lightly tighten screws
20a
.
7. Slide wheel
3
on the reduction gear or the bearing box
shaft.
8. Align wheel
3
with pump body
1
while keeping setting
distance as indicated on the following diagram :
9. Gradually tighten screws
20a
while keeping wheel
alignment correct.
4.3 Replacing the shoes
To replace the shoes
5
, the pump hose must be disas-
sembled (see § REPLACING THE HOSE).
4.3.1 DISASSEMBLING THE SHOES
1. Partially untighten screw
28
.
2. Remove the shims
4
from the shoe
5
.
3. Completly loosen screw
28
and remove the washer
29
.
4. Remove the shoe
5
.
5. Remove the special shims
4
.
Keying distance (L) :
80 ± 2 mm
(3,15 ± 0,079 in)
NOTES
Some shims cannot be removed by sliding them
towards the outside. These special shims are installed
by the manufacturer and must be kept for reassembly.
These shims can be recognized as they have 2 holes
and have no notch like the other shims.
NOTE
Screws
20a
must not be tightened so the wheel
assembly
3
can freely slide along the reduction gear
shaft or the gearing box shaft.
WARNING
The weight ot the parts can
be dangerous and may
provoke bodily injuries or
material damages.
BE CAREFUL WITH THE WEIGHT OF
THE PARTS WHEN THEY ARE BEING
REMOVED.
4. MAINTENANCE OPERATIONS (continued)
