Dynabrade 10787 Safety, Operation And Maintenance Download

Page: 6 / 8

Assembly/Disassembly Instructions - Continued

Position the end of the

18594

Pinion Gear on the tool plate of the arbor press and place the rear bearing/plate assembly on the rear bearing journal of

the rotor.

Note

: Make sure that the cylinder line-up pin

18572

aligns with the hole in the rear bearing plate.

Use the raised inner portion of the

96240

Bearing Press Tool and the arbor press to push the

18555

Bearing along with the rear bearing plate down onto

the rotor until the bearing plate touches the cylinder. This should create a snug fit between the bearing plates and the cylinder. If the fit is too loose, add
a slight bit more press (preload).

Note

: A “snug” fit allows the cylinder to be shifted back and forth with a small amount of finger pressure. However, the

fit should not be loose or sloppy.

Use the

96343

Retaining Ring Pliers to install the

18567

Retaining Ring onto the rotor.

10.

Hold the

18552

Housing in a vise with bronze or aluminum jaws so that the motor opening is pointing up.

With the bearing plates and the cylinder aligned, apply a film of oil to the outside diameter of the motor. Orient the motor according to the exhaust
passage in the

18552

housing and the

18579

Valve Housing. Carefully slide the motor into the

18552

Housing.

Note

: It may be necessary, warm the

housing with a “Hot Air Gun”. This will expand the housing and facilitate the installation of the motor.

12.

Install the

18576

Gasket,

18577

Spacer and

18578

Gasket. These must align with the

18572

Pin, air inlet and exhaust openings.

13.

Orient and install the

18579

Valve Housing so that the air inlet and exhaust openings align correctly.

14.

Use the

95331

(4mm) Hex Key to fasten the valve housing to the

18552

Housing with the

18559

Washers (4) and the

18580

Screws (4).

(Torque to 10.75 N

•

m/95 in. lbs.)

15.

Install the

18601

Grip onto the

18579

Valve Housing.

Note

: A “Hot Air Gun” can be used to warm the

18601

Grip, making it more flexible.

16.

Install an air fitting into the

18591

Inlet Bushing and connect to the air supply. Test the air motor for proper operation.

Motor Assembly Complete.

Right Angle Gear Assembly:

Wipe off the surface of the

96231

Tool Plate to make sure that it is clean. Place the open side of the

18561

Bearing on the tool plate so that the inner

race is supported. Position the spindle into the bearing so that the threaded end is pointing up. Press the spindle and the bearing together.

Place the

18902

Spindle Cap on the tool plate so that the open side of the bearing pocket is facing up.

Position the spindle with the bearing on the spindle cap so that the threaded end of the spindle is pointing up. Press the spindle with bearing all the way
into the spindle cap.

Use the

96343

Retaining Ring Pliers to install the

18562

Retaining Ring.

Clean the keyway of the spindle with a swab moistened with acetone. Also, clean the

18563

Key with acetone and apply a small amount of

Loctite

#380 (or equivalent) to the keyway. Install the key and let the adhesive set.

Install and press the

18593

Bevel Gear onto the spindle. Apply a small amount of the

95542

Grease to the bevel gear and pinion.

Install the

18557

Wave Washer and use the retaining ring pliers to install the

18556

Retaining Ring.

Place the threaded portion of the spindle on the tool plate of the arbor press and use the raised center portion of the

96240

Bearing Press Tool

to press the

18555

Bearing onto the spindle.

Install the

18554

Spacer into the

18552

Housing so that the raised outer portion of the spacer will be against the outer race of the

18555

Bearing.

10.

Orient the air bleed notch of the spindle cap toward the throttle lever and install the spindle assembly into the housing. Check the fit of the gears and
for smooth rotation.

11.

Use the

95331

(4mm) Hex Key to install the

18560

Screws (4), and

18559

Washers (4). (Torque to 9 N

•

m/80 in. lbs.)

12.

Apply 3 plunges of the

95542

Grease through the grease fitting with the

95541

Lubrication Gun initially, and after every 100-hour interval of use.

Right Angle Gear Assembly Complete.

Orbital Head Assembly:

Slide

61394

Switch Shaft into the housing so that it is in the rotary (unlock) position.

Install

61935

Switch Spring,

61393

Pin,

61397

Spring, and

61396

Locking Pin Insert.

Apply a small amount of the Loctite #242 (or equivalent) to the external threads of

61398

Locking Pin Bushing and install into the orbital head using the

96364

Slotted screwdriver.

Wipe all oil and grease for the outside diameter of the

57069

Balancer Shaft with a clean cloth. Wipe all oil and grease from the inside diameter of the

56052

Bearing.

Apply a small amount of the Loctite #609 (or equivalent) to the outside diameter of the

57069

Balancer Shaft.

Place the

57069

Balancer Shaft on the tool plate of the

96232

#2 Arbor Press. Position the sealed side of the

56052

Bearing on the balancer shaft and

use the

57091

Bear Press Tool to install the bearing onto the balancer shaft.

Wipe all oil and grease from the outside diameter of the

56052

Bearing and the bearing pocket of the orbital head. Apply a small amount of the Loctite

#609 (or equivalent) to the outside diameter of the bearing and install the balancer shaft and the bearing into the orbital head

Apply a small amount of the Loctite #242 (or equivalent) to the threads of the three

95235

Screws and install these into the orbital head

(Torque to 5.7 N•m/50lb-in.).

Use the

95823

21mm Wrench to install the orbital head assembly on the spindle.

10.

Slide

61394

Switch Shaft to the lock position.

11.

Assemble the washers and spacer as shown on page 4 and place the backing pad on the

57069

Balancer Shaft. Use the

95823

21mm Wrench to hold

the head stationary while installing the

96168

Screw with a 3/16" hex key (Torque to 11.3 N•m/100lb-in.).

12.

Connect the polisher to the air supply hose and check for the proper operation.

Orbital Head Assembly Complete. Polisher Assembly Complete.

Please allow 30 minutes for adhesives to cure before operating tool.

Important:

Motor should now be tested for proper operation at 90 PSIG. If motor does not operate properly or operates at a higher RPM than marked on the

tool, the tool should be serviced to correct the cause before use. Before operating, place 2-3 drops of Dynabrade Air Lube (P/N

95842

) directly into air inlet

with throttle lever depressed. Operate tool for 30 seconds to determine if tool is operating properly and to allow lubricating oils to properly permeate motor.

Right Angle Gear Lubrication Instructions:

•

Apply 3 plunges of the

95542

Grease through the grease fitting with the

95541

Lubrication Gun after every 100-hour interval of use.

Loctite

is a registered trademark of Loctite Corp.