To Assemble (Continued):
6.
Install the felt and the “Top Hat” Seal onto the motor shaft balancer so that they are centered as is shown in
Drawing 2
.
7.
Use the small end of the
57091
Bearing Press Tool and the
96232
Arbor Press to install the
58368
Bearing onto the motor shaft balancer as
shown in
Drawing 3
.
8.
Install the rotor key and the rotor onto the motor shaft balancer.
9.
Lubricate the
56073
Vanes with the
95842
Dynabrade Air Lube (10W/NR or equivalent) and install them into the rotor.
10.
Install the
59051
Cylinder so that the short line-up pin fits into the front bearing plate.
11.
Install the
58368
Bearing into the
59077
Rear Bearing Plate.
12.
Use the small end of the
57091
Bearing Press Tool and the arbor press to install the rear bearing/plate onto the motor shaft balancer as is shown in
Drawing 5
. Press the bearing/plate down until it touches the cylinder. Check the fit between the bearing plates and cylinder. Grasp the outer diameter of
the bearing plates, one in each hand. Twist the plates back and forth. It is important to achieve a snug fit between the bearing plates and the cylinder. A
snug fit will trap the cylinder while still allowing it to be twisted back and forth. A loose fit will not achieve proper preload of the motor bearings.
13.
Install the
01024
Seal into the cylinder and apply a small amount of the Dynabrade Air Lube onto the o-ring.
14.
Slip
59058
Lock Ring over the counter weight of the 3/32" and the 3/16" orbit sanders.
15.
Use mark on the edge of the motor opening to identify the location of the line-up notch on the inside of the housing.
16.
Install the motor assembly into the housing. Be certain that the line-up pin enters the notch in the housing.
17.
Use the
57092
Collar to carefully hold the tool in a vise so that the counter balance is pointing up.
18.
Use the
56058
Lock Ring Tool to tighten the
59058
Lock Ring by turning it clockwise. (Torque to 23 N•m/300 in.- lbs.)
19.
Use the 26mm open-end wrench to install a weight-mated back-up pad.
Valve and Speed Regulator Assemblies:
1.
Secure housing in vice using
57092
Collar or padded jaws.
2.
Remove inlet bushing,
01468
Spring,
58365
Tip Valve and
01464
Seal from housing. Remove
94590
Pin from housing, lever and comfort platform.
3.
Remove
95697
Snap Ring. Press the speed regulator and valve stem out of the housing. Remove the
01025
O-Rings (2) and
98459
O-Ring.
4.
Place new
01025
O-Rings (2) on the speed regulator and a new
98459
O-Ring on the valve stem. Then place in housing with valve stem. Install new
95967
Snap Ring. Apply a small amount of pneumatic tool oil to valve o-rings.
5.
Place new
01464
Seal in housing. Using tweezers or needle nose pliers, place the tip valve into housing so that the tip valve goes under the valve
stem. Place new
01468
Spring into housing so small end is towards tip valve.
6.
Apply a small amount of #567 Loctite
®
(or equivalent) around the threads of the first inlet bushing and tighten into housing to 23 N•m/200 in.- lbs.
7.
Install lever and comfort platform on housing with
94590
Pin centered on housing.
Note:
Motor should operate at between 11,000 and 12,000 RPM at 6.2 bar (90 PSIG). RPM should be checked with a tachometer. Before operating,
we recommend that 2-3 drops of Dynabrade Air Lube P/N
95842
(or equivalent) be placed directly into the air inlet with throttle lever depressed. Operate the
machine for approximately 30 seconds before application to workpiece to determine if machine is working properly and safely and to allow lubricating
oils to properly dispense through machine.
Loctite
®
is a registered trademark of the Loctite Corp.
Disc Pad Change:
1.
Insert
50679
Wrench on flats of
57069
Balancer Shaft and twist off back-up pad by hand.
2.
With wrench still in place, hand tighten new pad on tool.
3.
No need to remove shroud or overskirt.
Required Weight of Pads:
3" Models –– Use pad weighing 75g.
3-1/2" Models –– Use pad weighing 80g.
5" Models –– Use pad weighing 100g.
6" Models –– Use pad weighing 130g.
57091
Bearing
Press Tool
Balancer
Shaft Assembly
Motor Shaft
Balancer
Front Bearing
57091
Bearing
Press Tool
Balancer
Shaft Assembly
Motor Shaft
Balancer
Front Bearing
Plate
57091
Bearing Press Tool
Balancer Shaft Assembly
Motor Shaft Balancer
59076
Front Bearing Plate
(with
58368
Bearing)
59077
Rear Bearing Plate
(with
58368
Bearing)
59051
Cylinder Assembly
(w/Rotor and Vanes)
Line-Up Pin
Drawing 5
6
57091
Bearing Press Tool
Balancer Shaft
56052
Bearing
59084
V-Seal
Balancer
Shaft Assembly
Motor Shaft
Balancer
59057
“Top Hat”
Seal
59083
Felt Seal
Diagrams
Drawing 1
Drawing 2
Drawing 3
Drawing 4
