Matco Tools RL425 User manual

RL425 1 Rev. 09/11/03
™
RL425
7" HORIZONTAL
SANDER
• Operating Instructions
• Warning Information
• Parts Breakdown
Free Speed . . . . . . . . . . . . . . . . . . . .4500 rpm
Spindle Size . . . . . . . . . . . . . . . . . . . .5/8"-11
Min. Hose Size (I.D.)... . . . . . . . . . . . . . . . .3/8"
Air Inlet . . . . . . . . . . . . . . . . . . . . . . . . .1/4"
Rec. Air Pressure . . . . . . . . . . . . . . . . . .90 psi
Avg. Air Consumption . . . . . . . . . . . . . . .6 cfm
Paper Size . . . . . . . . . . . . . . . . . . . . . . . . .7"
Pad Size . . . . . . . . . . . . . . . . . . . . . . . . . . .7”
Length . . . . . . . . . . . . . . . . . . . . . . . . . . .16”
Net Weight . . . . . . . . . . . . . . . . . . . . .6.5 lbs.
SPECIFICATIONS
ALWAYS READ
INSTRUCTIONS
BEFORE USING
POWER TOOLS
ALWAYS WEAR
SAFETY GOGGLES
WEAR HEARING
PROTECTION
AVOID
PROLONGED
EXPOSURE TO
VIBRATION
Some dust created by power sanding,
sawing, grinding, drilling, and other
construction activities contains chemicals
known to cause cancer, birth defects or
other reproductive harm. Some examples
of these chemicals are:
•lead from lead-based paints,
•crystalline silica from bricks and
cement and other masonry products,
and
•arsenic and chromium from
chemically-treated lumber.
Your risk from these exposures varies,
depending on how often you do this type
of work. To reduce your exposure to these
chemicals: work in a well ventilated
area, and work with approved safety
equipment, such as those dust masks that
are specially designed to filter out
microscopic particles.

RL425 2 Rev. 09/11/03
This Instruction Manual Contains Important Safety
Information.
Read THIS INSTRUCTION MANUAL
Carefully and understand ALL
INFORMATION Before Operating
THIS Tool.
• Always operate, inspect and
maintain this tool in accordance with
American National Standards Institute Safety
Code of Portable Air Tools (ANSI B186.1) and
any other applicable safety codes and regulations.
•For safety, top performance and maximum
durability of parts, operate this tool at 90 psig
6.2 bar max air pressure with 3/8" diameter air
supply hose.
• Always wear impact-resistant eye
and face protection when operating
or performing maintenance on this
tool. Always wear hearing
protection when using this tool.
• High sound levels can cause
permanent hearing loss. Use
hearing protection as recommended
by your employer or OSHA
regulation.
• Keep the tool in efficient
operating condition.
•Operators and maintenance personnel must
be physically able to handle the bulk, weight
and power of this tool.
• Air under pressure can cause
severe injury. Never direct air at
yourself or others. Always turn off
the air supply, drain hose of air
pressure and detach tool from air
supply before installing, removing or
adjusting any accessory on this tool, or before
performing any maintenance on this tool.
Failure to do so could result in injury. Whip
hoses can cause serious injury. Always check
for damaged, frayed or loose hoses and fittings,
and replace immediately. Do not use quick
detach couplings at tool. See instructions for
correct set-up.
•Air powered tools can vibrate in use. Vibration,
repetitive motions or uncomfortable positions
over extended periods of time may be harmful
to your hands and arms.
Discontinue use of tool if
discomfort, tingling feeling or pain
occurs. Seek medical advice before
resuming use.
•Place the tool on the work before starting
the tool.
• Slipping, tripping and/or falling
while operating air tools can be a
major cause of serious injury or
death. Be aware of excess hose left
on the walking or work surface.
• Keep body working stance
balanced and firm. Do not overreach when
operating the tool.
•Anticipate and be alert for sudden changes in
motion during start up and operation of any
power tool.
• Do not carry tool by the hose.
Protect the hose from sharp objects
and heat.
• Keep away from rotating end of
tool. Do not wear jewelry or loose clothing.
Secure long hair. Scalping can occur if hair is
not kept away from tool and accessories.
Choking can occur if neckwear is not kept
away from tool and accessories.
• Never mount a grinding wheel on
a sander/polisher. A grinding wheel
that bursts can cause very serious
injury or death when not properly
guarded. Inspect backing pad
before each use. Do not use if
cracked or damaged.
•Avoid direct contact with moving sanding pad
to prevent pinching or cutting of hands or other
body parts.
•Do not lubricate tools with flammable or
volatile liquids such as kerosene, diesel or
jet fuel.
•Do not force tool beyond its rated capacity.
•Do not remove any labels. Replace any
damaged labels.
FAILURE TO OBSERVE THESE WARNINGS COULD RESULT IN INJURY

RL425 3 Rev. 09/11/03
RL425
7" Angle Sander
34
51
35
36
37
38
39
40
41
42
43
44
49
45
46
47
7
9
6
5
2
1
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11
3
50
17
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33
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29 23
24
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48
26
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27
™
Item#
1
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6
7
9
10
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12
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16
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21
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23
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Part # Description Qty.
Air Inlet
Exhaust Bushing
Motor Housing
Handle Cover
Lever
Throttle Lever Pin
Throttle Valve Bushing
Valve Stem
O-Ring
Spring
Air Regulator
O-Ring
O-Ring
Valve Screw
Gasket
Bearing Cap
Retainer Ring
Ball Bearing
Rear End Plate
Rotor Blade
Rotor
Dowel Pin
Cylinder
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
4
1
1
1
Item#
26
27
28
29
30
32
33
34
35
36
37
38
39
40
41
42
43
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45
46
47
48
49
50
51
Part # Description Qty.
RS71626
RS71627
RS71628
RS21109
RS71630
RS71632
RS71633
RS71634
RS71635
RS71636
RS71637
RS71638
RS71639
RS71640
RS71641
RS71642
RS71643
RS71644
RS71645
RS71646
RS71647
RS71648
RS71649
RS71650
RS71651
RS71601
RS71602
RS71603
RS71605
RS71606
RS71607
RS71609
RS71610
RS71611
RS71612
RS71613
RS71614
RS71615
RS71616
RS71617
RS71618
RS71619
RS21417
RS71621
RS71622
RS71623
RS71624
RS71625
Front End Plate
Clamp Nut
Spacer
Ball Bearing
Bevel Gear Shaft
Allen Cap Screw
Dead handle
Housing-Angle
Needle Bearing
Retainer Ring
Wave Washer
Bevel Gear
Bearing Bushing
Ball Bearing
Woodruff Key
Gear Shaft
Gasket
Angle Housing Cover
Screw with Lock Washer
Sander Pad
Retaining Nut
O-Ring
Stop Spanner
Rubber
Bearing Plate
1
1
1
2
1
4
1
1
1
1
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1

RL425 4 Rev. 09/11/03
Tools of this class operate on a wide range of air
pressures. It is recommended that air pressure of these
tools measure 90 PSI at the tool while running free.
Higher pressure and unclean air will shorten the
tool’s life because of faster wear and may create a
hazardous condition.
Water in the air line will cause damage to the tool.
Drain the air tank daily. Clean the air inlet filter
screen on at least a weekly schedule. The recommended
hook-up procedure can be viewed in Figure 2.
The air inlet, Figure 1, used for connecting air
supply, has standard 1/4" NPT American Thread.
Line pressure should be increased to compensate for
unusually long air hoses (over 25 feet). Minimum hose
diameter should be 3/8" I.D. and fittings should have
the same inside dimensions
AIR SUPPLY
Before operating this sander, it is important to ensure
that the sanding pad is secure. To do this, hold the
stop spanner on the gear shaft and turn the pad
clockwise until tight.
Note: Make sure dead handle is installed on
appropriate side of sander for positive grip while
operating tool.
To change sanding discs: Remove retaining nut , place
abrasive disk on sanding pad, then replace retaining
nut. Again, make sure pad is tightened securely.
Let the sander do the work. The normal weight of the
machine is sufficient for efficient sanding. Do not put
excessive pressure on the machine. This will only slow
down the speed of the pad, reduce sanding efficiency
and put an additional burden on the motor. Start the
sander off the work, set it down on the work evenly
and move it slowly back and forth in wide, overlapping
areas. When finished sanding, lift it off the work
before stopping the motor.
OPERATION
TROUBLESHOOTING
LUBRICATION & MAINTENANCE
WARRANTY
Other factors outside the tool may cause loss of
power or erratic action. Reduced compressor output,
excessive drain on the air line, moisture or restrictions
in air pipes or the use of hose connections of improp-
er size or poor conditions may reduce air supply. If
outside conditions are in order, disconnect tool from
hose and take tool to your nearest Matco authorized
service center.
Lubricate the tool daily with a good grade of air tool
oil. If no air line oiler is used, run a teaspoon of oil
through the tool. The oil can be squirted into the tool
air inlet, Figure 1, or into the hose at the nearest
connection to the air supply, then run the tool. A rust
inhibitive oil is acceptable for air tools.
Matco warrants its air tools for a period of 1 year to
the consumer. We will repair any air tool covered
under this warranty which proves to be defective in
material or workmanship during the warranty period.
In order to have your tool repaired, return the tool to
any Matco Authorized Warranty Center, freight
prepaid. Please include a copy of your proof of
purchase and a brief description of the problem. The
tool will be inspected and if any part or parts are
found to be defective in material or workmanship,
they will be repaired free of charge and the repaired
tool will be returned to you freight prepaid.
This warranty gives you specific rights. You may also
have other rights which vary from state to state.
The foregoing obligation is Matco's sole liability
under this or any implied warranty and under no
circumstances shall Matco be liable for any incidental
or consequential damages.
Note: Some states do not allow the exclusion or
limitation of incidental or consequential damages so
the above limitation or exclusion may not apply to you.
Nipple
Figure 1
Figure 2
Air Inlet