FRONT GEAR ASSEMBLY (previously removed from housing and bush assembly).
Hold ring gear
14
and tap out internal assembly from front end, then remove spacer
15
and bearing
19
from rear end of planet gear spindle
12
.
Tap out two planet gear shafts
16
and remove two planet gears
18
together with needle bearings
17
.
Press out needle bearings
17
from planet gears
18
. and bearing
13
from ring gear
14
.
Assemble in reverse order of dismantling.
REAR GEAR ASSEMBLY
Pull off spacer
21
.
Hold ring gear
59
and push out internal assembly from the front end.
Remove two bearings
19
and spacer
57
from planet gear spindle
58
.
Push out two planet gear shafts
16
and slide out planet gears
18
and needle bearing
17
.
Press out needle bearings
17
from planet gears
18
.
Using circlip pliers remove circlip
20
from ring gear
59
.
Assemble in reverse order of dismantling.
MOTOR ASSEMBLY
Remove locating pin
26
from front end plate
25
.
Hold front end plate
25
and tap splined end of rotor
27
with a soft hammer so as not to damage splines.
Remove front end plate
25
and bearing
24
from rotor
27
.
Remove cylinder
28
complete with pins
26
.
Remove five rotor blades
29
from rotor
27
.
Support rear end plate
31
using a piece of tube with a bore diameter as close as possible to largest diameter of rotor
27
, then tap
non-splined end of rotor
27
to remove it from rear end plate
31
and bearing
32
.
Using a suitable punch, tap out bearing
32
from rear end plate
31
and bearing
24
from front end plate
25
.
When assembling, make sure that locating pin
26
in front end plate
25
locates in keyway in the front bore of the handle.
Pay special attention to rear end plate
31
and front end plate
25
, ensuring they are free from burrs and surface marking.
If necessary, lap faces that abut cylinder
28
on a flat fine grade abrasive paper.
Press fit bearings
32
&
24
into rear and front end plates
31
&
25.
Support bearing
32
in rear end plate
31
on its inner ring and using a soft hammer, tap rotor
27
on its splined end until rotor
27
locates against rear end plate
31
.
Support the inner face of rear end plate
31
as close as possible to largest diameter of rotor
27
and tap non-splined end of rotor
27
until a clearance of 0.040 mm (0.0015 in) to 0.065 mm (0.0025 in) is obtained between the inner face of rear end plate
31
and
rotor
27
.
Check clearance by pulling rotor
27
away from rear end plate
31
and bearing
32
.
Spin the rotor, ensuring that it rotates freely in rear end plate bearing
32
.
Locate cylinder
28
with locating pin
26
to rear end plate
31
and check ports in rear end plate
31
align with ports in cylinder
28
.
Insert rotor blades
29
into rotor
27
.
Fit front end plate
25
to cylinder
28
via its locating pin.
Ensure rotor
27
spins freely.
Assemble in reverse order of dismantling.
13
I M P O R T A N T
Check the tool against daily and weekly servicing.
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