MOTOR ASSEMBLY
Remove locating pin
35
from side of front end plate
25
.
Hold front end plate
25
and tap splined end of rotor
28
with a soft hammer so as not to damage the splines and remove front end plate
25
and
bearing
26
.
Remove cylinder
29
complete with roll pin
27
and pin
31
.
Remove the five rotor blades
30
from rotor
28
.
Support rear end plate
32
using a piece of tube with a bore diameter as close as possible to largest diameter of rotor
28
, then tap non-splined
end of rotor
28
to remove it from rear end plate
32
and bearing
33
.
Using a suitable punch, tap out bearing
26
from front end plate
25
and bearing
33
from rear end plate
32
.
When assembling, make sure that locating pin
35
in front end plate
25
locates in groove in the front bore of handle assembly
36
.
Pay special attention to front end plate
25
and rear end plate
32
, ensuring they are free from burrs and surface marking. If necessary, lap faces
that abut cylinder
29
on a flat fine grade abrasive paper.
Press fit bearings
26
&
33
into front and rear end plates
25
&
32.
Support bearing
33
in rear end plate
32
on its inner ring and using a soft hammer, tap rotor
28
on its splined end until rotor
28
locates against
rear end plate
32
.
Support inner face of rear end plate
32
as close as possible to largest diameter of rotor
28
.
Tap non-splined end of rotor
28
until a clearance of 0.040 mm (0.0015 in) to 0.065 mm (0.0025 in) is obtained between inner face of rear
end plate
32
and rotor
28
.
Check clearance by pulling rotor
28
away from rear end plate
32
and bearing
33
.
Spin rotor
28
ensuring that it rotates freely in rear end plate bearing
32
.
Locate cylinder
29
with pin
31
to rear end plate
32
and check ports in rear end plate
32
align with ports in cylinder
29
.
Insert five rotor blades
30
into rotor
28
.
Fit front end plate
25
to cylinder
29
with locating pin
27
.
Ensure rotor
28
spins freely.
Refit motor in reverse order to removal.
Complete assembly in reverse order of dismantling.
13
I M P O R T A N T
Checked the tool against daily and weekly servicing.
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