
!
IMPORTANT SAFETY INFORMATION
!
Read this manual including safety instrucons and operaon instrucons carefully
before using the appliance, for your own safety.
The pneumac tool is designed for grinding. The tool together with the prepared cushion
and proper abrasive can be used to grind the metal, stone, wood, plasc and other materials.
It can only be used for such grinding.
Before installing grinding and polishing accessories, always check whether the marked
maximum speed is higher than its rated speed. Use proper cushion whose size and weight
can meet the requirements.
APPLICATION
EXPLANATION OF SIGNAL WORDS
Warning means there maybe potenal hazardous situaons. If ignore it, it may lead to
property damage, slight or moderate injury, or even death.
WARNING
Read All The Instrucons
Before Using
!
WARNING
Please wear professional and authorized
respirator and other skin protecon devices
to protect your eyes and your bodies when
using air tools. Since dust produced by
abrasive materials may cause lung injury or
other physical injuries.
!
WARNING
Pay aenon to all the noces to reduce or avoid the risk of hazards that may be caused
during using pneumac tools:
1. Before using this tool, please read, understand and follow all the safety informaon
contained in these instrucons.
2. Only properly trained people can use such tools.
3. Do well self-protecon measures. And wear professional protecon devices to protect
yourself before using air tools.
4. Keep alert and dress properly when using the pneumac tool.
5. Do not exceed the max. working pressure (90psi/0.62Mpa/6.2Bars) when using.
6. According to the instrucons, install the pad carefully and ensure that it is firmly
connected to the tool before using.
7. Do not point the air tool to your ears or others'. Please stop using it immediately if its
noise reducon system is damaged. Repair it before pung it back to work for your safe.
8. Please stop immediately and go to see a doctor if you feel uncomfortable. Repeve
injuries may cause wrist or arm injuries.
MANUAL
6"AIR SANDER
WFS-3638C

1
11
7
77
4
44
4
44
4
44
5
55
1
11
2
22
3
33
4
44
5
55
6
66
7
77
8
88
9
99
3
33
0
00
2
22
9
99
2
22
8
88
2
22
6
66
2
22
7
77
2
22
2
22
2
22
5
55
2
22
3
33
2
22
4
44
2
22
2
22
2
22
1
11
2
22
0
00
1
11
8
88
1
11
6
66
3
33
2
22
3
33
7
77
3
33
3
33
3
33
4
44
3
33
5
55
3
33
6
66
4
44
1
11
4
44
3
33
3
33
8
88
3
33
9
99
4
44
0
00
2
22
4
44
1
11
4
44
1
11
5
55
1
11
3
33
1
11
2
22
1
11
1
11
3
33
1
11
1
11
9
99
1
11
0
00
4
44
2
22
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
1
2
1
5
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Sanding
Pad Size
Speed
Ave. Air
Consumption
6" (1
46mm)
11000RPM
112L/min (4cfm)
Air Inlet
Air Exhaust
Working
Pressure
NPT 1/4"
360 Rear Exhaust
90PSI
TECHNICAL SPECIFICATIONS
IMPORTANT SAFETY INSTRUCTIONS
1. Please wear goggles, earmuffs and gloves to ensure safety before using tools.
2. Please wear a mask if the air is poor.
3. Please do not use any damaged or worn air compressor pipe fings.
4. Please ensure that you have enough strength to hold the pneumac tools, since there will
be great impact when they are working.
5. Please do not use pneumac tools for a long me. If you feel red or uncomfortable,
please stop using them immediately and go to see a doctor.
6. Do not use unauthorized parts and accessories, which may do harm to human body and
pneumac tools.
7. When using pneumac tools, please do not wear es, scarves and loose clothing to
prevent serious injury caused by being involved in the pneumac tools.
8. Please remove the air connector when the tool is repaired or aer using the tools.
IMPORTANT OPERATING INSTRUCTIONS
1. Power source: compressed air.
2. Please configure an air filter screen to ensure the cleanness and dryness of the air, which
can make the tool works longer.
3. The length of the air hose should not exceed 5m to avoid the air compressor pipeline
winding.
4. The air compressor and air compressor pipe must be drained regularly. The polluted and
moist air will seriously affect the life of pneumac tools.
MAINTENENCE
1. Please lubricate the tool only with specified lubricants. Lubricate the air inlet using only
pneumac tool oil.
2. Please use an oil injector to lubricate the pneumac tools and adjust the flow rate to 2 drops per
minute.
3. Please add an appropriate amount of lubricang oil into the air connector before use, if the oil
injector is not applicable. This will greatly improve the performance and life of the air sander.
4. Please do not disassemble tools arbitrarily to avoid damage.
TROUBLESHOOTING
Problem Possible Causes Possible Soluons
Insufficient
Torque
Not enough air pressure
or airflow
Check for loose connectors
and make sure that air supply
is providing enough air flow
(CFM) at required pressure
(PSI) to the tool's air inlet. Do
not exceed maximum air
pressure.
Incorrect or insufficient
lubricaon
Using air tool oil to lubricate
according to direcons.
Abrasion of hammering
mechanism
Replace parts
Motor components
wear
Check and replace worn
parts
Sundries mixed in the
motor components
Disassemble and remove
impuries
Problem Possible Causes Possible Soluons
Low Speed
Incorrect or insufficient
lubricaon
Using air tool oil to lubricate
according to direcons.
Blade wear Replace worn blade
Sundries mixed in the motor
components
Disassemble and remove
impuries
Aging of sealing ring
Replace sealing ring
Air Leak
Air inlet leak
Replace the air inlet connector
and add raw material belt
Choke Wear
Replace the choke
Body
Jacket
Trigger
Straight pin 3*45
O-ring 4*1
Pin
O-ring 8*1.8
Valve knob
Hole retaining ring
Switch valve ring
Switch valve
Switch valve spring
Locang sleeve
Air inlet connector
Cover
5"/6" Drive sha
Woodruff key 3*5*13
Lock nut
O-ring 39.8*3.1
Bearing 6001-2Z
Front cylinder head
O-ring 38*1.5
Cylinder
Cylinder sealing ring
Straight pin 3*28
Rotor
Blade
Back cylinder head
Bearing 6000-2Z
Snap ring
E stopper
Bearing 6001-RS
Dust-proof pad
Bearing sealing ring
V gasket
C retaining ring
Balancing sha
O-ring
Vacuum adapter
Dust sucon pipe joint
Dust collecng hood
6" PAD
Wrench
Dust collecng hose
Dust collecng bag
PARTS LIST
REF
Description
QTY
Not enough air pressure
or airflow
Check for loose connectors
and make sure that air supply
is providing enough air flow
(CFM) at required pressure
(PSI) to the tool's air inlet. Do
not exceed maximum air
pressure.
REF
Description
QTY
