34-8700-5191-8
4
Revision 10/03/07
into the mounting hole of the Swivel Exhaust Assembly
and Housing until the end of the screw is flush with the
inside surface of the Housing. Place the Nut into the
cavity of the Housing and thread the Screw into the Nut
until tight. Move onto the “Spindle, bearing shield and
Shaft Balancer Assembly” Section.
III. This section for SGV Exhaust machines:
A) Install the Shroud or SGV Vacuum Skirt onto the Hous-
ing by working the shroud or skirt over and around the
bottom of the housing flanges. Make sure the line up
slots (on the Housing) and tabs (on the Shroud or Skirt)
are engaged.
B) Attach the SGV Skirt Adapter or SGV Shroud Adapter to
the exhaust port of the Shroud or SGV Skirt.
C) Clean and lightly grease the two O-rings and place them
in the two grooves in the SGV Retainer.
D) Put the SGV Retainer into the mounting hole of the Ø 1
in. (28 mm) Hose SGV Swivel Exhaust Assembly.
E) Push the Ø 1 in. (28 mm) Hose SGV Swivel Exhaust
Assembly into the exhaust port of the SGV Skirt Adapter
or SGV Shroud Adapter. Screw the SGV Retainer into
the threaded exhaust port on the Housing with an 8 mm
Hex Wrench. Torque to 45 in/lbs (5.08 Nm. ).
Spindle, Bearing Shield and Shaft Balancer Assembly:
1. Place the Washer and Shim on the Spindle shaft with
the curve of the Washer facing up so that the outside
diameter of the washer will contact the outer diameter of
the Bearing. Place the Bearing on the Spindle with the
seal side toward the Washer. Press onto Spindle using
the T-1B Spindle Bearing Press Tool (see figure) until
seated at bottom.
2. Insert Shim with tangs into the bottom of Spindle Bore
of the Shaft Balancer. (Do not use this shim if Shaft
Balancer text shows a + symbol.)
3. When the Spindle Assembly is done correctly, the Bearing
will rotate freely but not loosely.
4. Take the new Filter and center it on the small bore that
the original Filter was in before removal. With a small
diameter screwdriver or flat-ended rod, press the Filter
into the bore until it is flat in the bottom of the bore.
Place the Valve into the bore so it is oriented correctly,
then press the Retainer into the bore until it is flush with
the bottom of the Bearing bore.
5. Apply a pin head size drop of 3M Rite-Loc TL71 or
equivalent to the outside diameter of each of the bear-
ings on the spindle assembly. Spread the drop of bear-
ing locker around the bearing until distributed evenly.
CAUTION: Only a very small amount of bearing locker
is needed to prevent rotation of the bearing OD. Any ex-
cess will make future removal difficult. Place the Spindle
Assembly into the bore of the Shaft Balancer and secure
with the Retaining Ring. CAUTION: Make sure that the
Retaining Ring is completely snapped into the groove in
the Balancer Shaft. Allow the adhesive to cure.
Motor Assembly:
1. Use the larger end of the T-13 Bearing Press Sleeve to
press the front Bearing (with 2 Shields) onto the shaft of
the Shaft Balancer.
2. Slide the Front Endplate with the bearing pocket facing
down onto the Motor Shaft. Gently press the Front End-
plate onto the Bearing using the larger end of the T-13
Bearing Press Sleeve until the Front Bearing is seated
in the bearing pocket of the Endplate. CAUTION: Only
press just enough to seat the bearing into the pocket.
Over-pressing can damage the bearing.
3. Place the Key into the groove on the Shaft Balancer.
Place the Rotor on the Shaft Balancer, making sure that
it is a tight slip fit.
4. Oil the five Vanes with a quality pneumatic tool oil and
place them in the slots of the Rotor. Place the Cylinder
Assembly over the Rotor with the short end of the
Spring Pin engaging the blind hole in the Front End-
plate. NOTE: The Spring Pin must project .060 in. (1.5
mm) above the flanged side of the Cylinder.
5. Press fit the rear Bearing (2 shields) into the Rear
Endplate with the T-1B Bearing Press Tool. Make sure
the T-1B Press Tool is centered on the O.D. of the outer
race. Lightly press fit the Rear Endplate and Bearing
Assembly over the Shaft Balancer using the small end
of the T-13 Bearing Press Sleeve. The sleeve should
press only the inner race of the bearing. IMPORTANT:
The Rear Endplate and Bearing Assembly is pressed
correctly when the Cylinder is squeezed just enough
between the Endplates to stop it from moving freely
under its own weight when the shaft is held horizontal,
but be able to slide between the Endplates with a very
light force. If the assembly is pressed to tightly the
motor will not run freely. If the pressed assembly is to
loose, the motor will not turn freely after assembly in the
Housing. Secure the assembly by placing the Retaining
Ring in the groove of the Shaft Balancer. CAUTION: The
Retaining Ring must be placed so that the middle and
two ends of the hoop touch the Bearing first. Both raised
center portions must be securely “snapped” into the
groove in the Shaft Balancer by pushing on the curved
portions with a small screwdriver.
6. Lightly grease the O-Ring and place in the air inlet of the
Cylinder Assembly.
7. Lightly grease or oil the inside diameter of the Housing,
line up the Spring Pin with the marking on the Housing
and slide the Motor Assembly into the Housing. Make
sure the Spring Pin engages the pocket in Housing.
8. Carefully screw the Lock Ring into the Housing with the
T-6 Motor Lock Ring Wrench/Spindle Puller Tool. Torque
to 60 in/lbs (6.77 Nm.) NOTE: A simple technique
to assure first thread engagement is to turn the lock
ring counter clockwise with the T-6 Motor Lock Ring
Wrench/Spindle Puller while applying light pressure. You
will hear and feel a click when the lead thread of the lock
ring drops into the lead thread of the housing.
9. Spin on a new Pad and hand tighten it using a 24 mm
Pad Wrench.
Testing:
Place 3 drops of quality pneumatic air tool oil directly into
the motor inlet and connect it to a 90 psig (6.2 bar) air
supply. A 12,000 RPM tool should run between 11,500 to
12,000 RPM when the air pressure is 90 psig (6.2 bar) at
the inlet of the tool while the tool is running at free speed.
This free speed will be about 500 RPM to 1,000 RPM less
when a Vacuum or Hook Face Pad is used because of wind
resistance. This will not affect performance when sanding.
