Dynabrade Dynalocke 10750 User manual

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Parts Page Reorder No. APD08•07
Effective November, 2008
Supersedes: APD04•05
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.
12,000 RPM, 3/16" Orbit Air Motor and Machine Parts
Dynalocke
TM
Dual Action Sander
Models:
10750 - 5" Pad, Non-Vacuum 10754 - 6" Pad, Non-Vacuum
10752 - 5" Pad, Vacuum-Ready 10756 - 6" Pad, Vacuum-Ready
1Sanding Pad: See Chart
257262 Balancer Shaft
395630 Snap Ring
459084 V-Seal
556133 Bearing
6Motor Shaft Balancer:
57268 5"
57269 6"
754673 Key
856046 Lock Ring
959057 "Top Hat" Seal
10 59083 Felt
11 02695 Bearing
12 54630 Front Bearing Plate
13 54705 Rotor/Blade Set (5/pkg.)
14 56595 Cylinder
(Includes: 95865 Pin)
15 01020 O-Ring
16 54629 Rear Bearing Plate
17 01206 Bearing
18 56713 Lock Assembly
19 96252 Compression Spring
20 56705 Post Cap
21 57264 Post Assembly
22 56712 Switch Bottom
23 96478 O-Ring
24 57369 Shroud
25 Housing: See Chart
(Includes: 13161 Housing Grip
and Labels)
26 56711 Switch Top
27 96489 Screw
28 95627 Pin
29 56582 Safety Throttle Lever
30 98459 O-Ring
31 56579 Valve Stem
32 56578 Speed Regulator
33 01025 O-Ring (3)
34 56598 Seal
35 51944 Tip Valve
36 51943 Spring
37 56586* Vacuum Plug
38 96459 O-Ring
39 56469 Exhaust Gasket
40 56468 Handle Assembly
(Includes: 51938 Inlet Screen)
41 96469 Screw (2)
42 96454 Screw (2)
43 56597* Muffler
44 56596* Muffler Cap
Index Key
No. Part # Description
Adhesive: A2= Loctite #271
A3= Loctite #242
Torque: N•m x 8.85 = In. - lbs.
Oil: O1= Air Lube
O
A
T
KEY
10
11
O1
O1
O1
O1
O1
O1
O1A2
A3
A2
3 N•m
T
12 N•m T
34 N•m T
3 N•m
T
23
13
15
5
2
42
41
LEFT HAND
THREAD
LEFT HAND
THREAD
HOOK-FACE
SANDING PADS
54326 - 5" Vac
54328 - 6" Vac
54325 - 5" Non-Vac
54327 - 6" Non-Vac
HOUSING MODEL
ASSEMBLY # NUMBER
13185 10750
13186 10752
13189 10754
13190 10756
*Parts included with Non-Vacuum
Models Only.
38
For Serial No. 08K1800 and Higher
AUTOMOTIVE

2
Important Operating, Maintenance and Safety Instructions
Carefully read all instructions before operating or servicing any Dynabrade®Abrasive Power Tool.
Warning: DO NOT USE pressure sensitive adhesive (PSA) abrasive products on this 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.
Follow safety 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. Air tools are not intended for use in explosive atmospheres and are not insulated for contact with electrical power sources. Sanding/Grinding certain
materials can create explosive dust. It is the employers responsibility to notify the user of acceptable dust levels. Sanding/Grinding can cause sparks
which can cause fires or explosions. It is the users responsibility to make sure the work area is free of flammable materials.
Maintenance Instructions:
To keep tool safe a preventative maintenance program is recommended whenever portable power tools are used.
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. It is strongly recommended that all Dynabrade rotary vane air tools be used with a Filter-Regulator-Lubricator to minimize the possibility of misuse due
to unclear air, wet air or insufficient lubrication. Dynabrade recommends the following: 10681 Air Line Filter-Regulator-Lubricator — Provides accurate
air pressure regulation, two-stage filtration of water contaminants and micro-mist lubrication of pneumatic components.
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 98220) is available which includes assorted parts to help maintain motor in peak operating condition. Please refer to
Dynabrade's Preventative Maintenance Schedule for a guide to expectant life of component parts.
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.
8. DO NOT clean or maintain air tools with chemicals that have a low flash point (example: WD-40®).
Full One Year 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 or
replace 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).
• 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 Pad Dia. Sound Maximum Air Flow Hose I.D. Size Air Inlet Tool Weight Length Height
Number hp (W) RPM Inch (mm) Level SCFM (LPM) Inch (mm) Thread Thread Pound (kg) Inch (mm) Inch (mm)
10750 .45 (336) 12,000 5 (127) 82 dB(A) 23 (651) 1/4 (6) 1/4" NPT 5/16"-24 Female 2.7 (1.2) 11-1/16 (280) 5-1/8 (131)
10752 .45 (336) 12,000 5 (127) 82 dB(A) 23 (651) 1/4 (6) 1/4" NPT 5/16"-24 Female 2.6 (1.2) 11-1/16 (280) 5-1/8 (131)
10754 .45 (336) 12,000 6 (152) 82 dB(A) 23 (651) 1/4 (6) 1/4" NPT 5/16"-24 Female 2.8 (1.3) 11-1/2 (293) 5-1/8 (131)
10756 .45 (336) 12,000 6 (152) 85 dB(A) 23 (651) 1/4 (6) 1/4" NPT 5/16"-24 Female 2.7 (1.2) 11-1/2 (293) 5-1/8 (131)
Additional Specifications: Air Pressure 90 PSIG (6.2 Bar)

Disassembly/Assembly Instructions
Important: The manufactures warranty is void if the tool is disassembled before the warranty expires. Use these instructions in conjunction with the Part Number
57260 Tool Repair Kit. This kit includes special tooling for the proper disassembly/assembly of the Two-Hand Dynalocke Sander. This Tooling will be referred to in
these instructions. An air motor Tune-Up Kit, Part Number 98220 is also available. It contains the high and medium wear components that most
commonly need replacement.
Motor Disassembly:
1. Disconnect the sander from the air supply.
2. Use the 57092 Repair Collar to hold the sander in a vise. Position the sander so that the sanding pad is facing up. Note: Do not over tighten the collar and sander in the
vise. Only hold the sander snugly, so that the motor lock ring can be removed easily.
3. Use the 50679 26mm Open End Wrench to remove the sanding pad from the sander by holding the 57262 Balancer Shaft stationary and turning the pad counterclockwise.
4. Use the 56058 Lock Ring Tool to remove the 56046 Lock Ring by turning it counterclockwise.
5. Pull the air motor assembly out of the housing. Note: Be aware that the 57264 Post Assembly, 56705 Post Cap, and 96252 Compression Spring will slip easily out of the
motor shaft balancer.
6. Secure the counterweight of the motor shaft balancer in a vise equipped with aluminum or bronze jaws so that the motor assembly is pointing up.
7. Use the 50679, 26mm Open End Wrench to remove the 56713 Lock Assembly by turning it clockwise. (Left Hand Threads)
8. Remove the 01020 O-Ring from the 56595 Cylinder and fasten a 2" bearing separator around the part of the cylinder that is closest to the 54629 Rear Bearing Plate.
9. Place the air motor with the bearing separator attached, onto the 96232, #2 Arbor Press so that the counterweight is hanging down from the table of the arbor press.
10. Use a 5/16" dia. flat end drive punch as a press tool to push the motor shaft balancer out of the 01206 Bearing. Use the 96213 Bearing Removal Tool to push the
01206 Bearing out of the 54629 Rear Bearing Plate. Note: This bearing removal tool is not included in the 96283 Repair Kit.
11. Remove the cylinder, rotor, vanes and key.
12. Use a 2" bearing separator and arbor press to remove the 02695 Bearing. Remove 59057 “Top Hat” Seal and 59083 Felt from 54630 Front Bearing Plate.
13. Fasten the counterweight of the motor shaft balancer in a vise equipped with aluminum or bronze jaws so that the 57262 Balancer Shaft is pointing up.
14. Use a small flat blade screwdriver to remove the 95630 Snap Ring.
15. Use the 56056 Bearing Puller to remove the balancer bearing assembly.
16. Fasten the separator between the 57262 Balancer Shaft and the 95628 Bearing Shield.
17. Place the bearing separator on the table of the arbor press so that the hex end of the 57262 Balancer Shaft is pointing down. Use the 3/16" flat end drive punch as a
press tool to push the balancer shaft out of the 56133 Bearing. Remove the 59084 V-Seal.
Motor Disassembly Complete.
Motor Assembly:
Important: Clean and inspect all motor parts for wear or defect.
1. Balancer Assembly:
a.) Install 59084 V-Seal onto the balancer shaft. Install with flexible lip of seal facing hex of balancer shaft. Be certain seal is pressed
completely over shaft step. (See Drawing 1)
b.) Install 95360 Snap Ring between flange of 59084 V-Seal and hex of balancer shaft.
c.) Apply a small amount of the Loctite #271 (or equivalent) to the bearing surface of the 57069 Balancer Shaft.
d.) Use the large end of the 57091 Bearing Press Tool along with the 96232, #2 Arbor Press to push the 56133 Bearing onto the balancer shaft until it fits
against the shaft step. (Drawing 1)
2. Place the counterweight of the motor shaft balancer in a vise equipped with aluminum or bronze jaws so that the bearing pocket is pointing up.
3. Apply a small amount of the Loctite #271 (or equivalent) to the outside diameter of the 56133 Bearing. Slide the balancer shaft/bearing assembly all the way into the
bearing pocket of the motor shaft balancer. Secure this assembly in the motor shaft balancer by squeezing the 95630 Snap Ring into the groove in the
motor shaft balancer.
4. Install the 56046 Lock Ring onto the motor shaft balancer so that the “OFF” inscription is toward the counterweight of the shaft. Place the 59083 Felt into the
59057 “Top Hat” Seal. Install onto motor shaft balancer so they are centered as shown in Drawing 2.
5. Use the small end of the 57091 Bearing Press Tool and the arbor press to install the 02695 Bearing all the way onto the motor shaft balancer. (Drawing 2)
6. Install the 54630 Front Bearing Plate onto the 02695 Bearing and check it for smooth rotation. (Drawing 3)
7. Install the 54673 Key so that the 90° side of the key fits into the keyway of the shaft and the tapered side of the key fits into the rotor. Install the 54705 Rotor/Blade Set (5)
onto the motor shaft balancer.
8. Apply the 95842 Dynabrade Air Lube (10W/NR or equivalent) to the blades.
9. Install the 56595 Cylinder over the rotor so that the short line-up pin fits into the front bearing plate.
10. Place the 54629 Rear Bearing Plate over the shaft so that the long line-up pin fits through the hole in the rear bearing plate. Use the small end of the 57091 Bearing
Press Tool to install the 01206 Bearing onto the motor shaft balancer and into the 54629 Rear Bearing Plate. Use the press tool and the arbor press to install these so that
there is a snug fit between the bearing plates and the cylinder. Note: Carefully press the 01206 Bearing onto the motor shaft balancer until it touches against the bearing
seat on the inside of the bearing plate. (Drawing 4)
11. Secure the counterweight of the motor shaft balancer in a vise equipped with aluminum or bronze jaws so that the motor assembly is pointing up.
12. Apply a small amount of the Loctite #271 to the threads of the motor shaft balancer and use a 26mm Crow Foot Wrench to install the 56713 Lock Assembly by turning it
counterclockwise. (Left Hand Thread) (Torque to 12 N·m/100 in. lbs.) Install 96252 Spring, 56705 Cap and 57264 Post Assembly.
13. Orient the flat side of the 56705 Post Cap toward the flared end of 57264 Post Assembly and install the post cap. Install the 96252 Compression Spring onto the post
assembly and insert the post assembly, with the spring and post cap into the motor shaft balancer.
14. Apply a small amount of petroleum lubricant to the 01020 O-Ring and install the o-ring into the air inlet hole in the cylinder.
15. Install the motor assembly into the housing making sure to align the line-up pin with the line-up hole that is on the inside of the housing.
16. Use the 56058 Lock Ring Tool to tighten the lock ring and secure the motor in the housing. (Torque to 34 N·m/300 in. lbs.)
17. Install the appropriate shroud and weight-mated sanding pad.
Motor Assembly Complete.
Handle and Valve Disassembly:
1. Place the 57092 Repair Collar around the housing so that the handle is pointing up.
2. Use a Phillips screwdriver to remove the four screws that fasten the handle to the housing. Carefully pull the handle from the housing. This provides access to the tip
valve components, also the handle; o-ring, gasket and vacuum plug.
3. Use a 1/8" dia. flat end drive punch to remove the 95627 Pin and the 56582 Throttle Safety Lever.
(continued text and diagrams on next page)

DYNABRADE
®
DYNABRADE, INC., 8989 Sheridan Drive • Clarence, NY 14031-1490 • Phone: [phone] • Fax: [phone] • International Fax: [phone]
DYNABRADE EUROPE S.àr.l., Zone Artisanale • L-5485 Wormeldange—Haut, Luxembourg • Telephone: [phone] • Fax: [phone]
© DYNABRADE, INC., 2008 PRINTED IN USA APD08.05_08/08
Visit Our Web Site: www.dynabrade.com Email: Customer[email protected]
98220 Motor Tune-Up Kit
• Includes assorted parts to
help maintain and repair motor.
96232 (#2) Arbor Press
• This arbor press is ideal for the disassembly
and assembly of air motors.
96346 2" Bearing Separator
• Use the separator to remove gears
and bearings.
Dynabrade Air Lube
• Formulated for pneumatic equipment.
• Absorbs up to 10% of its weight in water.
• Prevents rust and formation of sludge.
• Keeps pneumatic tools operating longer
with greater power and less down time.
95842: 1pt. (473 ml)
95843: 1gal. (3.8 L)
Diagrams
Optional Accessories
4. Pull the 56578 Speed Regulator and valve stem out of the housing.
Handle and Valve Disassembly Complete.
Handle and Valve Assembly:
1. Place the 57092 Repair Collar around the housing so that the handle mounting area is facing up.
2. Install the 01025 O-Rings (3) onto the 56578 Speed Regulator, apply a small amount of petroleum lubricant to the o-rings and insert the regulator assembly into the
housing. Note: Be careful that the o-rings do not get caught and pulled out of the o-ring grooves.
3. Install the 98459 O-Ring onto the 56579 Valve Stem, apply a small amount of petroleum lubricant to the o-ring and insert the shortest portion (from the end to the o-ring)
of the valve stem assembly into the speed regulator.
4. Install the 56582 Throttle Safety Lever onto the housing and secure it in place with the 95627 Pin.
5. Install the 56598 Seal into the air inlet passage of the housing.
6. Install the 56586 Vacuum Plug into the exhaust passage of the housing. (See Exploded View)
7. Use needle-nose pliers to grasp and install the 51944 Tip Valve so that it fits under the 56579 Valve Stem.
8. Install the large end of the 51943 Spring into the air inlet passage of the handle.
9. Install the 56469 Gasket onto the mounting surface of the handle.
10. Apply a small amount of petroleum lubricant to the 96459 O-Ring and install it onto the outside diameter of the air inlet passage at the location of the first shoulder.
11. Connect the handle to the housing and secure it in place with the four screws. Note: The two longer screws, Part Number 96454 (2) also secure the
13161 Grip to the housing.
12. Install the 56597 Muffler and secure it in place with the 56596 Muffler Clip. (See Exploded View)
Handle and Valve Assembly Complete. Tool 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 penetrate motor.
Loctite®is a registered trademark of Loctite Corp.
57091
Bearing Press Tool
Balancer Shaft
Motor Shaft
Balancer
02695 Bearing
Front Bearing Plate
Drawing 3
57091
Bearing Press Tool
Front Bearing Plate
(with 02695 Bearing)
54629 Rear Bearing Plate
(with 01206 Bearing)
Cylinder Assembly
(w/ rotor and vanes)
Line-Up Pin
Drawing 4
Motor Shaft Balancer
Balancer Shaft
57260 Motor Repair Kit:
• Contains special tools for
disassembly/assembly of machine.
Balancer Shaft
Shaft Step
59084 V-Seal
Drawing 1
56133 Bearing
57091
Bearing Press Tool
Balancer Shaft
Motor Shaft
Balancer
02695 Bearing
59083 Felt
59057 “Top Hat” Seal
57091
Bearing Press Tool
Drawing 2
Important: Lock Ring must now be placed
over sub-assembly. Not shown in drawings.