Dynabrade Dynafine 57902 User Manual

Always operate, inspect and maintain this tool in accordance with the Safety Code for portable air tools (ANSI B186.1) and any other applicable safety codes
and regulations. Please refer to Dynabrade’s Warning/Safety Operating Instructions for more complete safety information.

Models:

57902 — 13,000 RPM, Wet Dynafine

®

Wet Dynafine®Sander

Parts Page Reorder No. PD03•31

Effective September, 2003

Supersedes PD02•20T

Loctite: A1= Loctite #609

A

2

= Loctite #271

A

8

= Loctite #567

Torque: N•m x 8.85 = In. - lbs.

KEY

A

T

O

Air Motor and Machine Parts

Oil: O1= Air Lube

G

Grease: G

1

= Lubriplate 630 AA

Index Key

No. Part # Description

1 97328 Screw (2)
2 58030 2" Vinyl Face Pad
3 11016 Bearing
4 57975 Boot Assembly
5 97326 Boot Clamp

Assembly
6 57961 Cam Assembly
7 57962 Exhaust Cover
8 56305 Bearing
9 53161 Front Bearing Plate

10 50777 Rotor
11 01480 Blades (4/pkg.)
12 01476 Cylinder
13 50767 Pin
14 02673 Rear Bearing Plate
15 02696 Bearing
16 02679 Shield
17 57779 Housing
18 01548 Gasket
19 01461 Lock Nut
20 01558 Collar
21 95523 O-Ring
22 01470 Insert
23 95558 Retaining Ring

24 01448 Throttle Lever

01462 Safety Lock Lever
25 12132 Pin
26 57936 Housing
27 01449 Valve Stem
28 95730 O-Ring
29 01024 O-Ring
30 01469 Speed Regulator

Assembly
31 01464 Seal
32 01472 Tip Valve
33 01468 Spring
34 96065 O-Ring
35 57970 Air Control Ring
36 95711 Retaining Ring
37 95438 O-Ring
38 94521 Muffler Base
39 94528 Felt Muffler
40 94522 Muffler Cap
41 95375 O-Ring
42 94526 Spacer
43 94523 Inlet Adapter
44 94519 Muf fler Assembly
45 94407 1/4" Flow Control

12

48

9

10

12

13

14

1517

16

18

20

21 22 26

23

24

25

30

27

28
29

31 32

33

34

35

36 37 38 39 40 41 42

44

45

Right Hand

Threads

A

8

A

8

A

8

O

1

A

2

G

1

A

8

O

1

A

1

45 N•m

T

17 N•m

T

23 N•m

T

0.7 N•m

T

28 N•m

T

Left Hand

Threads

19

11

3

6

5

43

7

57777 Wet Assembly On Page 4.

For Serial No. 2L2948 and Higher

!

WARNING

Important Operating, Maintenance and Safety Instructions

Carefully read all instructions before operating or servicing any Dynabrade®Abrasive Power Tool.
Warning: Hand, wrist and arm injury may result from repetitive work motion and overexposure to vibration.
Important: All Dynabrade Rotary Vane air tools must be used with a Filter-Regulator-Lubricator to maintain all warranties.

Operating Instructions:

Warning: Eye, face, respiratory, sound, and body protection must be worn while operating power tools. Failure to do so may result in serious injury or death. Followsafety

procedures posted in workplace.

1. With power source disconnected from tool, securely fasten abrasive /accessory on tool.

2. Install air fitting into inlet bushing of tool. Important: Secure inlet bushing of tool with a wrench before attempting to install the air fitting to avoid damaging

valve body housing.

3. Connect power source to tool. Be careful not to depress throttle lever in the process.

4. Check tool speed with tachometer. If tool is operating at a higher speed than the RPM marked on the tool or operating improperly, the tool should be serviced to correct

the cause before use.

Maintenance Instructions:

1. Check tool speed regularly with a tachometer. If tool is operating at a higher speed than the RPM marked on the tool, the tool should be serviced to correct the
cause before use.

2. Some silencers on air tools may clog with use. Clean and replace as required.

3. All Dynabrade Rotary Vane air motors should be lubricated. Dynabrade recommends one drop of air lube per minute for each 20 SCFM (example: if the tool

specifications state 40 SCFM, set the drip rate of your filter-lubricator at 2 drops per minute).
Dynabrade Air Lube (P/N 95842: 1 pt. 473 ml.) is recommended.

4. An Air Line Filter-Regulator-Lubricator must be used with this air tool to maintain all warranties. Dynabrade recommends the following: 11405Air Line Filter-Regulator­Lubricator — Provides accurate air pressure regulation, two-stage filtration of water contaminants and micro-mist lubrication of pneumatic components. Operates 40 SCFM
@ 100 PSIG has 3/8" NPT female ports.

5. Use only genuine Dynabrade replacement parts. To reorder replacement parts, specify the Model #, Serial #, and RPM of your machine.

6. A Motor Tune-Up Kit (P/N 96236)is available which includes assorted parts to help maintain motor in peak operating condition.

7. Mineral spirits are recommended when cleaning the tool and parts. Do not clean tool or parts with any solvents or oils containing acids, esters, keytones, chlorinated

hydrocarbons or nitro carbons.

2

One Y ear Warranty

Following the reasonable assumption that any inherent defect which might prevail in a product will become apparent to the user within one year from the date of purchase, all
equipment of our manufacture is warranted against defects in workmanship and materials under normal use and service. We shall repair orreplace at our factory, any equipment
or part thereof which shall, within one year after delivery to the original purchaser, indicate upon our examination to have been defective. Our obligation is contingent upon prop­er use of Dynabrade tools in accordance with factory recommendations, instructions and safety practices. It shall not apply to equipment which has been subject to misuse, neg­ligence, accident or tampering in any way so as to affect its normal performance. Normally wearable parts such as bearings, contact wheels, rotor blades, etc., are not covered
under this warranty.

• Important: User of tool is responsible for following accepted safety codes such as those published by the American National Standards Institute (ANSI).

• Operate machine for one minute before application to workpiece to determine if machine is working properly and safely before work begins.

• Always disconnect power supply before changing abrasive/accessory or making machine adjustments.

• Inspect abrasives/accessories for damage or defects prior to installation on tools.

• Please refer to Dynabrade’s Warning/Safety Operating Instructions Tag (Reorder No. 95903) for more complete safety information.

Notice

All Dynabrade motors use the highest quality parts and metals available and are machined to exacting tolerances. The failure of quality pneumatic motors can most often be traced
to an unclean air supply or the lack of lubrication. Air pressure easily forces dirt or water contained in the air supply into motor bearings causing early failure. It often scores the
cylinder walls and the rotor blades resulting in limited efficiency and power. Our warranty obligation is contingent upon proper use of our tools and cannot apply to equipment which
has been subjected to misuse such as unclean air, wet air or a lack of lubrication during the use of this tool.

Safety Instructions:

Products offered by Dynabrade should not be converted or otherwise altered
from original design without expressed written consent from Dynabrade, Inc.

Model Motor Motor Sound Air Flow Rate Air Pressure Weight Length Height

Number HP (W) RPM Level CFM/SCFM (LPM) PSIG (Bars) Pound (kg) Inch (mm) Inch (mm)

57902 .12 (89) 13,000 65 dB(A) 3/20 (566) 90 (6.2) 1.6 (.7) 9 (229) 3-3/4 (95)

Additional Specifications: Air Inlet Thread 1/4" NPT • Hose Size 1/4" (8 mm)

Disassembly /Assembly Instructions - Dynafine

®

Important: Manufacturer’s warranty is void if tool is disassembled before warranty expires
Notice: Dynabrade strongly recommends the use of their 52296 Repair Collar (sold separately) during assembly/disassembly of the Dynafine

®

sander.

All of the special repair tooling referred to in these instructions can be ordered from Dynabrade. Please refer to this parts page for proper part identification.

Motor Disassembly:

1. Disconnect the tool from the air supply.

2. Place the 52296 Repair Collar around the tool and secure it in a vise so that the sanding attachment is facing up.

3. Remove the sanding attachment with the 95266 (3 mm) Hex Key.

Continued on next page.

(PD03•31)