Dynabrade 40330 Disassembly & Assembly Instructions
Dynabrade 40326 is a powerful and versatile tool designed for a wide range of sanding and finishing applications. With its 0.5 horsepower motor, it delivers exceptional performance and efficiency, making it ideal for both professional and DIY enthusiasts. The tool features a compact and lightweight design, ensuring easy handling and maneuverability, even in tight spaces. Its variable speed control allows you to adjust the speed according to the specific task and material, providing precise control and versatility.
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Disassembly Instructions - 0.5 hp. Dynafile II
Models:
40320, 40321, 40324, 40326, 40330, 40335
Important:
Use these instructions along with the tool parts page or manual.
Notice:
Shut off the air supply and depress throttle lever to deplete remaining air.
• Carefully disconnect the tool from the air supply hose. • Remove the abrasive belt and contact arm assembly. • Use the Special Repair Tools designed for the disassembly and assembly of this motor.
Motor Disassembly:
Use a 9/64" hex key to loosen the 95311 Screw.
1.
Use a 9/64" hex key to loosen the
95311
Screw. Remove the motor from the belt housing.
2.
Carefully hold the
01447
Housing in a vise with aluminum or bronze jaws so that the drive wheel is pointing up.
Notice: Over tightening vise will damage housing.
Insert a 3/16" hex key through drive wheel and into the end of the
01120
Rotor.
Use groove pliers to grasp the drive wheel and remove. Turn counterclockwise.
3.
Use the
50971
Lock Ring Wrench to remove the motor lock ring. Turn counterclockwise.
Remove the exhaust control spacer.
Pull the motor out of the housing.
96346 Bearing Separator
4.
Fasten the
96346
Bearing Separator (2") around the
01013
Cylinder. Place the separator and the motor in the
96232
Arbor Press (#2) so that the rotor spindle is pointing down.
Use a 3/16" or 5 mm diameter flat end drive punch to push the rotor out of the
01015
Bearing.
96211 Bearing Removal Tool
96346 Bearing Separator
5.
Use the
96211
Bearing Removal Tool and the arbor press to remove the
01015
Bearing from the rear bearing plate.
6.
Fasten the
01120
Rotor in the vise with aluminum or bronze jaws and use an adjustable wrench to remove the
04081
Rotor Nut. Turn counterclockwise.
Remove the
01007
Bearing,
01008
Bearing Plate, shims, and
01010
Spacer.
Motor Disassembly Completed.
Clean and inspect parts before assembling.
Assembly Instructions - 0.5 hp. Dynafile II
.003" (~0.80 mm) shim thickness
01010 Spacer
Motor Assembly:
1.
Install the
01010
Spacer onto the rotor.
Install .003" (~0.80 mm) shim thickness into the
01008
Front Bearing Plate.
Install the
01007
Bearing into the front bearing plate.
Install the bearing and plate onto the rotor.
.001"-.0015"
(~0.03-0.04 mm)
2.
By hand, install the
04081
Rotor Nut. Pull the front bearing plate forward to take movement out of the bearing. Check the clearance between the rotor and plate.
Use a .001" (~0.03 mm) thick feeler gauge.
Notice:
The clearance should be
.001"-.0015" (~0.03-0.04 mm). If the rotor/plate clearance needs adjustment, repeat steps 1 and 2. Remove or add shims as required.
T to 17 N•m/~150 in. lbs.
3.
Use a 17 mm socket or crowfoot, and a torque wrench to tighten the
04081
Rotor Nut.
(
T to 17 N•m/~150 in. lbs.)
OIL
4.
Apply the
95842
Dynabrade Air Lube, 10W/NR or equivalent to the
01011
Vanes and install them into the rotor.
96241 Bearing Press Tool
5.
Use the
RAISED OUTSIDE DIAMETER of the
96241
Bearing Press Tool and the arbor press to install the
01015
Bearing.
Notice:
Press the bearing all the way into the plate.
6.
Install the cylinder and rear bearing plate so that the air inlet openings line-up with each other.
96241 Bearing Press Tool
Just Touch
7.
Use the
RAISED INSIDE DIAMETER of the
96241
Bearing Press Tool and the arbor press to install the bearing and plate.
Important:
Press the bearing and plate down until the rear bearing plate just touches the
01013
Cylinder. Doing so, will produce a close fit between the bearing plates and the cylinder.
8.
Install the motor assembly.
Loctite #567
T to 34 N·m/~300 in. lbs.
9.
Carefully fasten the
01447
Housing in a vise with aluminum or bronze jaws so that the rotor spindle is pointing up.
Notice: Over tightening vise will damage housing.
As needed, install fabric silencer around the exhaust control spacer and o-rings around the lock ring.
Apply Loctite #7649 Primer to the thread of the lock ring.
Apply a small amount of Loctite #567 or equivalent to the lock ring.
Use the
50971
Lock Ring Tool and a torque wrench to install the lock ring.
T to 34 N·m/~300 in. lbs.
Use a 3/16" hex key, and pliers to tighten drive wheel.
10.
Insert a 3/16" hex key through the drive wheel and into the end of the
01120
Rotor to hold it stationary.
Use groove pliers to tighten the drive wheel.
IMPORTANT: Use a tachometer to check motor speed and to verify proper operation.
Use a 9/64" hex key.
11.
Install the air motor into the housing.
Use a 9/64" hex key to fasten the motor with the
95311
Screw and
40029
Cam Lock.
Motor Assembly Completed.
Notice: For belt housing, contact arm and valve assemblies, refer to the exploded view and the additional instructions contained in the tool parts page or manual.
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