Dynabrade Dynorbital EXTREME X31V User manual

Disassembly Instructions – Mini Vacuum Dynorbital EXTREME
Models: X31V
Important: Disconnect sander from the air supply.
Notice: Use these instructions along with the tool manual. To avoid damage, use the
special repair tools designed for motor disassembly and assembly. Position 57092
Repair Collar around the housing. Fasten sander in vise with sanding pad facing up.
Do not over tighten sander in vise. Use 95263 Wrench (17 mm) to hold the balancer
shaft stationary.
To remove sanding pad, turn counterclockwise.

Motor Disassembly:
1. Use 56061 Lock Ring Wrench to remove 59415 Lock Ring.
 Turn counterclockwise.

2. Remove motor from housing.
 Remove 01024 O-Ring from 59412 Cylinder Sleeve Adapter.
 Remove lock ring 59415 from motor assembly

3. Fasten 96346 Bearing Separator (2") around 59411 Cylinder Sleeve. Place
bearing separator and motor in 96232 Arbor Press (#2) with counterweight
pointing down.
 Use arbor press and 5/16" or 8 mm diameter flat-end drive punch to push shaft
out of 01139 Bearing.
 Remove 59411 Cylinder Sleeve & 59412 Cylinder Sleeve Adaptor

4. Use 96214 Bearing Removal Tool to remove 01139 Bearing from 59405 Rear
Bearing Plate.

5. Remove vanes, rotor and key.

6. Use bearing separator and arbor press to remove the front bearing plate.

7. Fasten bearing separator between 58368 Bearing and the counterweight.
 Place bearing separator in arbor press with counterweight pointing down.
 Push shaft balancer from 58368 Bearing.
Motor disassembly completed.

Balancer Shaft and Bearing Disassembly:
1. Fasten counterweight in vise with hex of 59406 Balancer Shaft pointing up.
 Use a thin slot-blade screwdriver as a pick to remove 95613 Snap Ring.
(Next three views.)

2. To break adhesive bond, use two, large slot-blade screwdrivers to pry out
balancer shaft and bearing. Notice: If necessary, use a HEAT GUN to warm
counterweight to soften adhesive.

3. Use 54141 Bearing Puller to remove balancer shaft and 59416 Bearings (2).

4. Fasten bearing separator between 95612 Spring (bearing shield) and hex end of
balancer shaft.

5. Place bearing separator and balancer shaft in arbor press with hex end pointing
down.
 Use the arbor press to break the adhesive bond.

6. Use a 5/16" or 8 mm diameter flat-end drive punch as a press tool to push
balancer shaft out of 59416 Bearings.

Balancer shaft and bearing disassembly completed.
Clean and inspect parts before assembling.

Assembly Instructions - Dynorbital EXTREME
Balancer Shaft and Bearing Assembly:
1. Install 95612 Spring (Bearing shield) onto the 59405 balancer shaft. Face the
convex side of the spring (bearing shield) toward the hex end of the balancer shaft

2. Apply a small amount of Loctite #271 or equivalent to outside diameter of
balancer shaft.

3a. Use thin slot blade screwdriver to remove 3 of the 4 seals from the 59416
bearings
(next three views)