RIDGID R8804 User manual

1
Your adhesive/caulk gun has been engineered and manufactured to our high standards for dependability, ease of operation,
and operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.
WARNING:
To reduce the risk of injury, the user must read and understand the operator’s manual before using this product.
Thank you for buying a RIDGID product.
SAVE THIS MANUAL FOR FUTURE REFERENCE
OPERATOR’S MANUAL
18 VOLT/24 VOLT MaxSelect™
ADHESIVE/CAULK GUN
R8804
BATTERIES AND CHARGERS
SOLD SEPARATELY
NEW LITHIUM-ION BATTERY PACKS
MUST BE CHARGED BEFORE FIRST USE

2
 Introduction .....................................................................................................................................................................2
 General Safety Rules ................................................................................................................................................... 3-4
 Specific Safety Rules .......................................................................................................................................................4
 Safety Rules for Charger .................................................................................................................................................5
 Symbols ....................................................................................................................................................................... 6-7
 Features ....................................................................................................................................................................... 8-9
 Assembly .........................................................................................................................................................................9
 Operation ................................................................................................................................................................. 10-17
 Maintenance ..................................................................................................................................................................18
 Warranty ........................................................................................................................................................................19
 Customer Service Information .......................................................................................................................................20
TABLE OF CONTENTS
INTRODUCTION
This tool has many features for making its use more pleasant and enjoyable. Safety, performance, and dependability have
been given top priority in the design of this product making it easy to maintain and operate.
WARNING:
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.

3
GENERAL SAFETY RULES
WARNING!
Read all instructions. Failure to follow all instruc-
tions listed below may result in electric shock, fire
and/or serious injury. The term “power tool” in all
of the warnings listed below refers to your mains-
operated (corded) power tool or battery-operated
(cordless) power tool.
SAVE THESE INSTRUCTIONS
WORK AREA
 Keep work area clean and well lit. Cluttered or dark areas
invite accidents.
 Do not operate power tools in explosive atmospheres,
such as in the presence of flammable liquids, gases or
dust. Power tools create sparks which may ignite the dust
or fumes.
 Keep children and bystanders away while operating a
power tool. Distractions can cause you to lose control.
ELECTRICAL SAFETY
 Power tool plugs must match the outlet. Never modify
the plug in any way. Do not use any adapter plugs with
earthed (grounded) power tools. Unmodified plugs and
matching outlets will reduce risk of electric shock.
 Avoid body contact with earthed or grounded surfaces
such as pipes, radiators, ranges and refrigerators. There
is an increased risk of electric shock if your body is earthed
or grounded.
 Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of electric
shock.
 Do not abuse the cord. Never use the cord for carrying,
pulling or unplugging the power tool. Keep cord away
from heat, oil, sharp edges or moving parts. Damaged
or entangled cords increase the risk of electric shock.
 When operating a power tool outdoors, use an exten-
sion cord suitable for outdoor use. Use of a cord suitable
for outdoor use reduces the risk of electric shock.
 Use battery only with charger listed.
MODEL BATTERY PACK CHARGER
R8804 (18V) 130254007 (18V) 140276003,
140276004 (R84009)
(24V) 130377001 (24V) 140315001
(R85008) (R85009)
PERSONAL SAFETY
 Stay alert, watch what you are doing and use common
sense when operating a power tool. Do not use a power
tool while you are tired or under the influence of drugs,
alcohol or medication. A moment of inattention while oper-
ating power tools may result in serious personal injury.
� Use safety equipment. Always wear eye protection.
Safety equipment such as dust mask, non-skid safety shoes,
hard hat, or hearing protection used for appropriate condi-
tions will reduce personal injuries.
 Avoid accidental starting. Ensure the switch is in the off-
position before plugging in. Carrying power tools with your
finger on the switch or plugging in power tools that have the
switch on invites accidents.
 Remove any adjusting key or wrench before turning the
power tool on. A wrench or a key left attached to a rotating
part of the power tool may result in personal injury.
 Do not overreach. Keep proper footing and balance at
all times. This enables better control of the power tool in
unexpected situations.
 Dress properly. Do not wear loose clothing or jewelry.
Keep your hair, clothing and gloves away from moving
parts. Loose clothes, jewelry or long hair can be caught in
moving parts.
 If devices are provided for the connection of dust extrac-
tion and collection facilities, ensure these are connected
and properly used. Use of these devices can reduce dust-
related hazards.
 Do not wear loose clothing or jewelry. Contain long hair.
Loose clothes, jewelry, or long hair can be drawn into air
vents.
 Do not use on a ladder or unstable support. Stable footing
on a solid surface enables better control of the power tool
in unexpected situations.
POWER TOOL USE AND CARE
 Do not force the power tool. Use the correct power tool
for your application. The correct power tool will do the
job better and safer at the rate for which it was designed.
 Do not use the power tool if the switch does not turn it
on and off. Any power tool that cannot be controlled with
the switch is dangerous and must be repaired.
 Disconnect the plug from the power source and/or the
battery pack from the power tool before making any
adjustments, changing accessories, or storing power
tools. Such preventive safety measures reduce the risk of
starting the power tool accidentally.
 Store idle power tools out of the reach of children and
do not allow persons unfamiliar with the power tool
or these instructions to operate the power tool. Power
tools are dangerous in the hands of untrained users.
 Maintain power tools. Check for misalignment or bind-
ing of moving parts, breakage of parts and any other
condition that may affect the power tool’s operation.
If damaged, have the power tool repaired before use.
Many accidents are caused by poorly maintained power
tools.
 Keep cutting tools sharp and clean. Properly maintained
cutting tools with sharp cutting edges are less likely to bind
and are easier to control.

4
 Use the power tool, accessories and tool bits etc., in
accordance with these instructions and in the manner
intended for the particular type of power tool, taking
into account the working conditions and the work to
be performed. Use of the power tool for operations dif-
ferent from those intended could result in a hazardous
situation.
BATTERY TOOL USE AND CARE
 Ensure the switch is in the off position before inserting
battery pack. Inserting the battery pack into power tools
that have the switch on invites accidents.
 Recharge only with the charger specified by the manu-
facturer. A charger that is suitable for one type of battery
pack may create a risk of fire when used with another bat-
tery pack.
 Use power tools only with specifically designated bat-
tery packs. Use of any other battery packs may create a
risk of injury and fire.
 When battery pack is not in use, keep it away from
other metal objects like paper clips, coins, keys, nails,
screws, or other small metal objects that can make a
GENERAL SAFETY RULES
connection from one terminal to another. Shorting the
battery terminals together may cause burns or a fire.
 Under abusive conditions, liquid may be ejected from
the battery, avoid contact. If contact accidentally
occurs, flush with water. If liquid contacts eyes, addi-
tionally seek medical help. Liquid ejected from the battery
may cause irritation or burns.
SERVICE
� Have your power tool serviced by a qualified repair
person using only identical replacement parts. This will
ensure that the safety of the power tool is maintained.
WARNING!
To reduce the risk of injury, user must read instruc-
tion manual.
 When servicing a power tool, use only identical replace-
ment parts. Follow instructions in the Maintenance sec-
tion of this manual. Use of unauthorized parts or failure to
follow Maintenance instructions may create a risk of shock
or injury.
SPECIFIC SAFETY RULES
 Know your power tool. Read operator’s manual care-
fully. Learn its applications and limitations, as well as
the specific potential hazards related to this tool. Fol-
lowing this rule will reduce the risk of electric shock, fire,
or serious injury.
 Always wear safety glasses with side shields. Everyday
glasses have only impact resistant lenses. They are NOT
safety glasses. Following this rule will reduce the risk of
eye injury.
 Protect your hearing. Wear hearing protection during
extended periods of operation. Following this rule will
reduce the risk of serious personal injury.
 Keep hands out of the plunger and plunger rod area of
the caulk gun. Fingers can be pinched between the tube
holder and the plunger.
 Maintain labels and nameplates. These carry important
information. If unreadable or missing, contact an authorized
service center for a replacement.
 Battery tools do not have to be plugged into an electrical
outlet; therefore, they are always in operating condition.
Be aware of possible hazards when not using your bat-
tery tool or when changing accessories. Following this
rule will reduce the risk of electric shock, fire, or serious
personal injury.
 Do not place battery tools or their batteries near fire
or heat. This will reduce the risk of explosion and possibly
injury.
 Do not crush, drop, or damage battery pack. Do not
use a battery pack or charger that has been dropped
or received a sharp blow. A damaged battery is subject
to explosion. Properly dispose of a dropped or damaged
battery immediately.
 Batteries vent hydrogen gas and can explode in the
presence of a source of ignition, such as a pilot light.
To reduce the risk of serious personal injury, never use
any cordless product in the presence of open flame. An
exploded battery can propel debris and chemicals. If
exposed, flush with water immediately.
 Do not charge battery tool in a damp or wet location.
Following this rule will reduce the risk of electric shock.
 For best results, your battery tool should be charged
in a location where the temperature is more than 50°F
but less than 100°F. Do not store outside or in vehicles.
 Under extreme usage or temperature conditions, bat-
tery leakage may occur. If liquid comes in contact with
your skin, wash immediately with soap and water, then
neutralize with lemon juice or vinegar. If liquid gets
into your eyes, flush them with clean water for at least
10 minutes, then seek immediate medical attention.
Following this rule will reduce the risk of serious personal
injury.
 If the power supply cord is damaged, it must be replaced
only by the manufacturer or by an authorized service center
to avoid risk.

5
SAFETY RULES FOR CHARGER
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS.
Failure to follow all instructions listed below, may
result in electric shock, fire and/or serious personal
injury.
 Before using battery charger, read all instructions and
cautionary markings in this manual, on battery charger,
battery, and product using battery to prevent misuse of the
products and possible injury or damage.
CAUTION:
To reduce the risk of electric shock or damage to
the charger and battery, charge only lithium-ion or
nickel-cadmium rechargeable batteries as specifically
designated on your charger. Other types of batteries
may burst, causing personal injury or damage.
 Do not use charger outdoors or expose to wet or damp
conditions. Water entering charger will increase the risk of
electric shock.
 Use of an attachment not recommended or sold by the
battery charger manufacturer may result in a risk of fire,
electric shock, or injury to persons. Following this rule will
reduce the risk of electric shock, fire, or serious personal
injury.
 Do not abuse cord or charger. Never use the cord to carry
the charger. Do not pull the charger cord rather than the plug
when disconnecting from receptacle. Damage to the cord
or charger could occur and create an electric shock hazard.
Replace damaged cords immediately.
 Make sure cord is located so that it will not be stepped
on, tripped over, come in contact with sharp edges
or moving parts or otherwise subjected to damage or
stress. This will reduce the risk of accidental falls, which
could cause injury, and damage to the cord, which could
result in electric shock.
 Keep cord and charger from heat to prevent
damage to housing or internal parts.
 Do not let gasoline, oils, petroleum-based prod-
ucts, etc. come in contact with plastic parts. They
contain chemicals that can damage, weaken, or destroy
plastic.
 An extension cord should not be used unless
absolutely necessary. Use of improper extension
cord could result in a risk of fire and electric shock. If
extension cord must be used, make sure:
a. That pins on plug of extension cord are the
same number, size and shape as those of
plug on charger.
b. That extension cord is properly wired and in
good electrical condition; and
c. That wire size is large enough for AC ampere
rating of charger as specified below:
Cord Length (Feet) 25´ 50´ 100´
Cord Size (AWG) 16 16 16
NOTE: AWG = American Wire Gauge
 Do not operate charger with a damaged cord or plug,
which could cause shorting and electric shock. If damaged,
have the charger replaced by an authorized serviceman.
 Do not operate charger if it has received a sharp blow,
been dropped, or otherwise damaged in any way.
Take it to an authorized serviceman for electrical check to
determine if the charger is in good working order.
 Do not disassemble charger. Take it to an authorized
serviceman when service or repair is required. Incorrect
reassembly may result in a risk of electric shock or fire.
 Unplug charger from outlet before attempting
any maintenance or cleaning to reduce the risk of
electric shock.
 Disconnect charger from the power supply when not in
use. This will reduce the risk of electric shock or damage
to the charger if metal items should fall into the opening. It
also will help prevent damage to the charger during a power
surge.
 Risk of electric shock. Do not touch uninsulated portion
of output connector or uninsulated battery terminal.
 Save these instructions. Refer to them frequently and use
them to instruct others who may use this tool. If you loan
someone this tool, loan them these instructions also to
prevent misuse of the product and possible injury.
IMPORTANT SAFETY INSTRUCTIONS
1. SAVE THESE INSTRUCTIONS
This manual contains important safety and operating instructions for battery chargers (18V) 140276003, 140276004
(R84009), and (24V) 140315001 (R85009).
2. Before using battery charger, read all instructions and cautionary markings on battery charger, battery, and product
using battery.
3. CAUTION: To reduce the risk of injury, charge only RIDGID lithium-ion batteries on the RIDGID lithium ion charger
and RIDGID nickel-cadmium batteries on RIDGID nickel-cadmium chargers. These batteries and chargers are not
interchangeable. Other types of batteries may burst, causing personal injury or damage.

6
SYMBOLS
Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpretation
of these symbols will allow you to operate the tool better and safer.
V Volts Voltage
A Amperes Current
Hz Hertz Frequency (cycles per second)
W Watt Power
min Minutes Time
Alternating Current Type of current
Direct Current Type or a characteristic of current
n
o
No Load Speed Rotational speed, at no load
Class II Construction Double-insulated construction
.../min Per Minute Revolutions, strokes, surface speed, orbits etc., per minute
Wet Conditions Alert Do not expose to rain or use in damp locations.
Read The Operator’s Manual To reduce the risk of injury, user must read and understand
operator’s manual before using this product.
Eye Protection Always wear safety goggles or safety glasses with side shields and,
as necessary, a full face shield when operating this product.
Safety Alert Precautions that involve your safety.
Pinch Point To reduce the risk of injury or damage, avoid contact with any
pinch point.
Hot Surface To reduce the risk of injury or damage, avoid contact with any hot
surface.
SYMBOL NAME DESIGNATION/EXPLANATION

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SYMBOLS
SERVICE
Servicing requires extreme care and knowledge and should
be performed only by a qualified service technician. For
service we suggest you return the product to your nearest
AUTHORIZED SERVICE CENTER for repair. When servic-
ing, use only identical replacement parts.
WARNING:
To avoid serious personal injury, do not attempt
to use this product until you read thoroughly and
understand completely the operator’s manual. If
you do not understand the warnings and instruc-
tions in the operator’s manual, do not use this
product. Call RIDGID customer service for assis-
tance.
The operation of any power tool can result in foreign objects being thrown into your eyes, which can result
in severe eye damage. Before beginning power tool operation, always wear safety goggles or safety glasses
with side shields and, when needed, a full face shield. We recommend Wide Vision Safety Mask for use
over eyeglasses or standard safety glasses with side shields. Always use eye protection which is marked
to comply with ANSI Z87.1.
WARNING:
SAVE THESE INSTRUCTIONS
The following signal words and meanings are intended to explain the levels of risk associated with this product.
SYMBOL SIGNAL MEANING
DANGER: Indicates an imminently hazardous situation, which, if not avoided, will result
in death or serious injury.
WARNING: Indicates a potentially hazardous situation, which, if not avoided, could result
in death or serious injury.
CAUTION: Indicates a potentially hazardous situation, which, if not avoided, may result in
minor or moderate injury.
CAUTION: (Without Safety Alert Symbol) Indicates a situation that may result in property
damage.

8
FEATURES
Fig. 1
PRODUCT SPECIFICATIONS
Motor .........................................................................................................................................................18 Volt / 24 Volt DC
Charger Input ....................................................................................................................................... 120 V, 60 Hz, AC only
Capacity ............................................................................................................................................10 oz. and 30 oz. tubes
SWITCH
TRIGGER
SWITCH
LOCK
PUNCTURE
TOOL
VARIABLE SPEED
SELECTOR
PLUNGER
ROD HANDLE
PLUNGER ROD
CARRIAGE
FRAME
JOIST
FOLLOWER
PISTON
PLUNGER ROD
RELEASE
TRIGGER

9
FEATURES
KNOW YOUR ADHESIVE/CAULK GUN
See Figure 1.
The safe use of this product requires an understanding of the
information on the tool and in this operator’s manual as well
as a knowledge of the project you are attempting. Before use
of this product, familiarize yourself with all operating features
and safety rules.
AUTO SHUT-OFF
When the caulk tube is empty, the auto shut-off feature will
cause the motor to shut off.
AUTOMATIC PRESSURE RELIEF
The adhesive/caulk gun features automatic pressure relief
to help stop the flow of material as soon as the trigger is
released.
CARRIAGE FRAME
The carriage frame will support a 30 oz. quart-size tube or a
standard 10 oz. tube of caulk, depending on your application.
ELECTRONIC OVERLOAD PROTECTION
An electronic overload protection feature causes the motor to
automatically shut down if too much pressure is exerted on
the caulk tube.
JOIST FOLLOWER
Use the joist follower when applying adhesive to floor joists
prior to installing sub-flooring or on wall joists before installing
sheetrock.
PLUNGER ROD
The forward movement of the plunger rod applies pressure
to the bottom of an open caulk tube, causing caulk to be dis-
pensed.
PLUNGER ROD HANDLE
The plunger rod handle is used to retract the plunger rod, allow-
ing caulk to be loaded. The plunger rod can only be moved while
the plunger rod release trigger is depressed.
PLUNGER ROD RELEASE TRIGGER
Depressing the plunger rod release trigger allows you to move
the plunger rod handle.
PUNCTURE TOOL
For your convenience, a puncture tool is provided for breaking
the seal on a new tube of caulk. When using a partially filled
caulk tube, the puncture tool can be used to remove any hard-
ened material from the tube’s nozzle.
SWITCH LOCK
The switch lock prevents depression of the switch trigger.
SWITCH TRIGGER
Depressing the switch trigger starts the forward motion of the
plunger rod. The amount of pressure applied to the switch
trigger determines the speed of material delivery up to the
maximum speed set by the variable speed selector.
VARIABLE SPEED SELECTOR
The plunger speed can be adjusted with the variable speed
selector. This allows you to adjust the material feed rate to suit
your particular application.
WARNING:
If any parts are damaged or missing do not operate
this tool until the parts are replaced. Failure to heed
this warning could result in serious personal injury.
WARNING:
Do not attempt to modify this tool or create acces-
sories not recommended for use with this tool. Any
such alteration or modification is misuse and could
result in a hazardous condition leading to possible
serious personal injury.
WARNING:
To prevent accidental starting that could cause seri-
ous personal injury, always remove the battery pack
from the tool when assembling parts.
UNPACKING
This product has been shipped completely assembled.
 Carefully remove the tool and any accessories from the
box. Make sure that all items listed in the packing list are
included.
 Inspect the tool carefully to make sure no breakage or dam-
age occurred during shipping.
 Do not discard the packing material until you have carefully
inspected and satisfactorily operated the tool.
 If any parts are damaged or missing, please call
1-866-539-1710 for assistance.
PACKING LIST
Adhesive /Caulk Gun
Joist Follower
Operator’s Manual
ASSEMBLY

10
OPERATION
WARNING:
Do not allow familiarity with tools to make you
careless. Remember that a careless fraction of a
second is sufficient to inflict severe injury.
WARNING:
Always wear safety goggles or safety glasses with
side shields when operating tools. Failure to do so
could result in objects being thrown into your eyes
resulting in possible serious injury.
WARNING:
Do not use any attachments or accessories not
recommended by the manufacturer of this tool.
The use of attachments or accessories not rec-
ommended can result in serious personal injury.
APPLICATIONS
You may use this tool for the purposes listed below:
� Applying adhesive
� Sealing cracks to keep your home’s conditioned air inside
while keeping unconditioned air outside, increasing your
home’s energy efficiency
� Filling holes and cracks before painting
� Creating a moisture barrier around areas that could be
damaged by water
� Sealing cracks to keep insects out of your home
CAUTION:
If at any point during the charging process none
of the LEDs are lit, remove the battery pack from
the charger to avoid damaging the product. DO
NOT insert another battery. Return the charger and
battery to your nearest service center for service
or replacement.
CAUTION:
Charge in a well ventilated area. Do not block
charger vents. Keep them clear to allow proper
ventilation.
NOTE: Charge only RIDGID lithium-ion batteries on the
RIDGID lithium-ion charger and RIDGID nickel-cadmium
batteries on RIDGID nickel-cadmium chargers. These
batteries and chargers are not interchangeable.
Refer to the General Safety Rules for compatibility.
THE FOLLOWING INSTRUCTIONS ARE
FOR RIDGID 24V LITHIUM-ION BATTERY
PACKS AND THE 24V RIDGID LITHIUM-ION
CHARGER.
CHARGING THE BATTERY PACK
NOTE: New 24 Volt lithium-ion battery packs will not
work without first being charged. Before first time use,
charge the battery pack to activate it.
It is not necessary to drain the battery pack completely
before recharging. Lithium-ion battery packs have no
“memory” and can be recharged at any time. It is therefore
possible to charge the battery pack before extended usage
even if the battery pack is not completely drained of charge.
Use the charge level indicator to determine the amount of
charge in the battery pack.
Lithium-ion batteries deliver fade free power for their entire
run time. 24 Volt lithium-ion tools will not gradually lose
power due to decreasing battery charge. Instead, power from
the battery pack will drop from full to zero once the full charge
has been drained from the battery. Once this happens, the
tool’s power drops from full to zero, and recharging of the
battery is required.
Fig. 2
CHARGE
LEVEL INDICATOR
24vXLi
?

11
OPERATION
TO CHARGE
A fully discharged battery pack with a temperature between
32°F (0°C) and 150°F (65°C) will charge in about an hour.
 Charge the 24 Volt lithium-ion battery pack only with the
charger provided.
� Connect the charger to a power supply.
NOTE: If needed, the charger can operate with most
generators and inverters rated at 300 Watts or higher.
 Attach the battery pack to the charger by aligning the
raised ribs on the battery pack with the grooves in the
charger, then slide the battery pack onto the charger.
See Figure 2.
 Do not place the charger in an area of extreme heat or
cold. It will work best at normal room temperature.
 After charging is complete, the continuous green light
will come on and the charge level indicator lights on the
battery will go off.
 The charger will keep the battery pack fully charged if left
on the charger.
CHARGE LEVEL INDICATOR
See Figure 3.
The charge level indicator shows that the battery is charged
at 1/4, 1/2, 3/4, or full capacity. To display the amount of
charge left in the battery, press and hold the charge level
indicator button.
NOTE: When the battery pack contains less than 10%
charge, the 1/4 charge level indicator will flash.
CHARGING A HOT BATTERY PACK
If the battery pack is above normal temperature range, the
red LED will begin flashing and the green LED will be off.
When the battery pack cools down to approximately 150°F
(65°C), the charger will automatically begin fast charge mode.
NOTE: Refer to CHARGING THE BATTERY PACK for
normal recharging of batteries. If the charger does not charge
the battery pack under normal circumstances, return both
the battery pack and charger to your nearest repair center
for electrical check. For the location of your nearest repair
center, please call 1-866-539-1710.
CHARGING A COOL BATTERY PACK
If the battery pack is below normal temperature range, the
red LED will begin flashing and the green LED will be off.
When the battery warms to a temperature of more than 14°F
(-10°C), the charger will automatically begin charge mode.
COLD WEATHER OPERATION
The lithium-ion battery pack can be used in temperatures
down to -4°F. When the battery pack is very cold, it may
“buzz” for the first minute of use to warm itself up. Put
the battery pack on a tool and use the tool in a light duty
application. After about a minute, the pack will have warmed
itself up and begin operating normally.
24vXLi
?
Fig. 3
1/4
CAPACITY
FULL
CAPACITY
CHARGE
LEVEL
INDICATOR
BUTTON
CHARGE
LEVEL INDICATOR
1/2
CAPACITY
3/4
CAPACITY
Fig. 4
EVALUATE
INDICATOR
CHARGING
INDICATOR
FULL
INDICATOR
DEFECTIVE
INDICATOR
GREEN LED
RED LED

12
OPERATION
LED FUNCTION OF RIDGID 24V LITHIUM-ION CHARGER
See Figure 4.
LED
INDICATOR BATTERY PACK RED LED GREEN LED ACTION
Charging Fast charging ON OFF Charges in 1 hour
Charging Deeply
Discharged ON OFF Charger pre-charges battery until normal voltage
is reached, then begins fast charge mode. May
take longer than 1 hour to fully charge.
Full Maintenance
charging OFF ON Fast charging is complete
Charger maintains charge mode
Evaluate Hot battery
pack Flashing OFF When battery pack reaches cooled temperature,
charger begins fast charge mode
Evaluate Cold battery
pack Flashing OFF When battery pack reaches warmed temperature,
charger begins fast charge mode
Defective Defective Flashing Flashing Battery pack or charger is defective
• If defective, try to repeat the conditions a second time by removing and reinstalling the battery
pack. If the LED status repeats a second time, try charging a different battery.
• If a different battery charges normally, dispose of the defective pack (see Maintenance section).
• If a different battery also indicates “Defective,” the charger may be defective.
Battery packs for this tool are shipped in a low charge
condition to prevent possible problems. Therefore, you
should charge the pack until the light on the front of the
charger changes from flashing green to continuous green.
NOTE: Batteries will not reach full charge the first time they
are charged. Allow several cycles (operation followed by
recharging) for them to become fully charged. This is normal
for nickel-cadmium batteries.
TO CHARGE
 Charge the battery pack only with the charger provided.
� Make sure the power supply is normal household voltage,
120 volts, 60 Hz, AC only.
 Connect the charger to a power supply.
 Attach the battery pack to the charger by aligning the
raised ribs on the battery pack with the grooves in the
charger, then slide the battery pack onto the charger.
See Figure 5.
 The battery pack will become slightly warm to the touch
while charging. This is normal and does not indicate a
problem.
 Do not place the charger in an area of extreme heat or
cold. It will work best at normal room temperature.
 For average charge times, refer to the chart on the
following page.
THE FOLLOWING INSTRUCTIONS ARE FOR RIDGID NICKEL-CADMIUM BATTERY PACKS AND
CHARGERS.
 When the batteries become fully charged, unplug the
charger from the power supply and remove the battery
pack.
CHARGING A HOT BATTERY PACK
When using the tool continuously, the batteries in the battery
pack will become hot. You should let a hot battery pack
cool down for approximately 30 minutes before attempting
to recharge. When the battery pack becomes discharged
and is hot, the green LED will be off and the red LED will
begin flashing.
When the battery pack cools down to approximately 104°F
(40°C), the charger will automatically begin fast charge
mode.
CHARGING A COOL BATTERY PACK
If the battery pack is below normal temperature range, the
red LED will begin flashing and the green LED will be off.
When the battery warms to a temperature of more than 41°F
(5°C), the charger will automatically begin fast charge mode.
NOTE: Refer to CHARGING THE BATTERY PACK for
normal recharging of batteries. If the charger does not charge
your battery pack under normal circumstances, return both
the battery pack and charger to your nearest repair center
for electrical check. For the location of your nearest repair
center, please call 1-866-539-1710.

13
OPERATION
LED FUNCTION OF RIDGID NICKEL-CADMIUM CHARGERS
See Figure 5.
Fig. 5
POWER
INDICATOR
EVALUATE
INDICATOR
CHARGING
INDICATOR
FULL
INDICATOR
LED
INDICATOR BATTERY PACK RED LED GREEN LED ACTION
Power Without battery pack ON OFF Ready to charge battery pack
Evaluate Hot battery pack Flashing OFF
When battery pack reaches cooled
temperature, charger begins fast
charge mode.
Evaluate Cold battery pack Flashing OFF
When battery pack reaches warmed
temperature, charger begins fast
charge mode.
Evaluate Deeply discharged Flashing OFF
Charger pre-charges battery until
normal voltage is reached, then
begins fast charge mode.
Defective Defective Flashing Flashing Battery pack or charger is defective
• If defective, try to repeat the conditions a second time by removing and reinstalling the battery
pack. If the LED status repeats a second time, try charging a different battery.
• If a different battery charges normally, dispose of the defective pack (see Maintenance section).
• If a different battery also indicates “Defective,” the charger may be defective.
Charging Fast charging ON Flashing See chart below for charge times
Full Slow charging OFF ON Fast charging is complete;
charger maintains charge mode
DEFECTIVE
INDICATOR
GREEN LED
RED LED BATTERY AVERAGE CHARGE TIME
COMPACT SERIES 18 min.
HC 27 min.
HC 2.5 34 min.

14
OPERATION
LOCKING THE SWITCH TRIGGER
See Figure 6.
The switch trigger of the caulk gun can be locked off using
the slide switch located below the switch trigger.
� To lock the switch trigger, slide the switch lock up. This
will prevent the caulk gun switch trigger from being
depressed.
� To unlock the switch trigger, slide the switch down. This
will allow the caulk gun switch trigger to be depressed.
STARTING/STOPPING THE CAULK GUN
See Figure 6.
Before attempting to start the caulk gun, be sure the switch
lock is in the unlocked position.
� To turn the caulk gun ON, depress the switch trigger.
� To turn the caulk gun OFF, release the switch trigger.
INSTALLING BATTERY PACK
See Figure 7.
 While holding the caulk gun pointed away from you, lock
the switch trigger by sliding the switch lock up. Place the
battery pack on the tool. Make sure the latches on each
side of the battery pack snap into place and the battery
pack is secured on the tool before beginning operation.
CAUTION:
When placing battery pack in the tool, be sure raised
rib on battery pack aligns with the bottom of the tool
and latches into place properly. Improper installation
of the battery pack can cause damage to internal
components.
REMOVING THE BATTERY PACK
See Figure 7.
� Lock the switch trigger by sliding the switch lock up.
� Depress the latches on the side of battery pack.
� Remove the battery pack from the tool.
Fig. 6
Fig. 7
LATCHES
DEPRESS LATCHES TO
RELEASE BATTERY PACK
BATTERY PACK
SWITCH
LOCK
UNLOCK
ON
SWITCH
TRIGGER
OFF
ON

15
ADJUSTING THE VARIABLE SPEED
See Figure 8.
The trigger pressure, speed selection, material type, tem-
perature, and nozzle diameter will all affect the material flow
rate. When using a tube or pack with a smaller diameter
nozzle, use a slower speed rate or the material could be
forced around the seal at the rear of the tube.
� Use the variable speed selector knob to set the maximum
speed rate desired for proper bead width and material
feed rate.
 Change the amount of pressure applied to the switch
trigger to increase or decrease the speed of material
delivery up to the maximum speed set by the variable
speed selector.
LOADING CAULK
See Figures 9 - 10.
� Lock the switch trigger by sliding switch lock up.
� Using a utility knife, cut off the tip of the spout on a tube
of caulk. Cut the tip at a 45˚ angle. Remove as little as
possible, taking into consideration the size of the “bead”
of caulk you need.
� Check for a second inner seal at the base of the spout. If
found, insert the puncture tool inside the spout to break
the seal before using. If using a partially filled tube, use
the puncture tool to remove any hardened material from
the tip.
NOTE: An inner seal is usually found only in cardboard
caulk tubes.
� Depress the plunger rod release trigger and pull the
handle of the plunger rod away from the caulk gun. Con-
tinue pulling until piston reaches the back of the carriage
frame.
� Load the caulk tube into the carriage frame, making sure
it is well seated at both ends.
ELECTRONIC OVERLOAD PROTECTION
The caulk gun is protected by an electronic overload protec-
tion feature. If too much pressure is exerted on the tube,
the motor will shut down. This helps to prevent damage
to the tool and the caulk tube. If the motor shuts off, make
sure that:
� Nozzle tip is cut
� �Inner seal in the caulk tube is broken
� Hardened material is removed from the nozzle
� Caulk tube is not damaged or frozen
� Plunger rod is free of caulk/adhesive materials
Release the trigger and wait for 3 to 5 seconds to allow the
electronics to reset. If the motor again shuts off, move the
variable speed selector to the middle position and press the
trigger again. If the motor continues to shut off, try another
tube of material or take the tool to an authorized service
center.
OPERATION
Fig. 8
VARIABLE SPEED
SELECTOR
LOW SPEED
HI SPEED
Fig. 9
Fig. 10
PLUNGER
ROD
CAULK TUBE PLUNGER ROD
HANDLE
SPOUT
2
3
4
SPOUT
PUNCTURE
TOOL
CARRIAGE
FRAME
1

16
JOIST
FOLLOWER
ADHESIVE BEAD
Fig. 12
INSTALLING THE JOIST FOLLOWER
See Figure 11.
� Hold and lightly squeeze the open end of the joist follower
in one hand.
� Insert the closed end of the joist follower into the opening
located beneath the end of the carriage frame. Make sure
it is completely seated to the raised notches on the joist
follower.
� Release the open end of the joist follower.
 When finished, squeeze the open end of the joist follower
and pull to remove.
WARNING:
Battery tools are always in operating condition.
Therefore, switch should always be locked when
not in use or carrying at your side.
APPLYING ADHESIVE WITH THE JOIST
FOLLOWER
See Figure 12.
Use the joist follower to put a straight center bead of adhesive
on wood surfaces between 1-1/4 in. and 2-5/8 in. wide.
 Install the joist follower as previously described.
 �Prepare the surface by removing any dust, dirt, or remnants
of old adhesive. Make sure the area is clean and dry.
 Set the speed of the caulk gun to match your application
needs, using just enough adhesive to do the job. Experi-
ment in an out-of-the-way area to find the best speed
and trigger pressure to use to deliver the adhesive bead
size you want.
�� Hold the gun at a slight angle.
 Squeeze the trigger on the caulk gun, allowing the adhe-
sive to extrude from the tube tip.
NOTE: If the bead of adhesive is too narrow, re-cut the
nozzle to provide a larger opening.
� Carefully move the caulk gun at an even pace along the
surface.
 The motor will shut off automatically when an adhesive
tube becomes empty. Depress the plunger rod release
trigger, pull the plunger rod back, and replace the tube
as necessary.
 To end the adhesive bead, release the switch trigger.
OPERATION
Fig. 11
TO REMOVE TO INSTALL
JOIST
FOLLOWER
RAISED
NOTCHES

17
OPERATION
APPLYING CAULK
See Figure 13.
 �Prepare the surface by removing any dust, dirt, or remnants
of old caulk. Make sure the area is clean and dry.
 Set the speed of the caulk gun to match your application
needs. Experiment in an out-of-the-way area to find the
best speed and trigger pressure to use to deliver the caulk
bead size you want.
 Hold the gun at a slight angle. If filling a crack, insert the
spout into the crack, if possible; otherwise, run the caulk
gun along the surface.
 Squeeze the trigger on the caulk gun and move the caulk
gun at an even pace along the surface.
NOTE: If the bead of caulk is too narrow, re-cut the nozzle
to provide a larger opening. However, it is better to apply
a thin bead of caulk and add a little more if necessary than
to apply too much and attempt to remove the excess.
 To end the caulk bead, release the switch trigger.
 For a finished appearance and to help the caulk adhere
to application surfaces, draw a moistened finger or other
“smoothing tool” along the caulk bead after applying.
 Use a damp towel or rag to clean off any excess caulk.
Fig. 13
CAULK BEAD

18
WARNING:
When servicing use only identical RIDGID replace-
ment parts. Use of any other parts may create a
hazard or cause product damage.
WARNING:
Always wear safety goggles or safety glasses with
side shields during power tool operation or when
blowing dust. If operation is dusty, also wear a
dust mask.
WARNING:
To avoid serious personal injury, always remove
the battery pack from the tool when cleaning or
performing any maintenance.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use. Use
clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petro-
leum-based products, penetrating oils, etc., come
in contact with plastic parts. Chemicals can dam-
age, weaken or destroy plastic which may result
in serious personal injury.
To work properly, the plunger rod of the tool must remain
clean and free of all caulk and adhesive material. If material
does get on the plunger rod mechanism, clean the mate-
rial off according to the directions of the caulk or adhesive
manufacturer.
When the tool is shut off by the electronic overload protection
system, always wait for 3 to 5 seconds before depressing
the trigger for restart. Frequently depressing and releasing
the trigger under these circumstances may cause interior
damage to the caulk gun.
Only the parts shown on the parts list are intended to be
repaired or replaced by the customer. All other parts should
be replaced at a RIDGID authorized service center.
BATTERIES
This tool will accept 24V lithium-ion batteries or 18V nickel
cadmium batteries. Length of service from each charging
will depend on the type of work you are doing.
The batteries in this tool have been designed to provide
maximum trouble-free life. However, like all batteries, they
will eventually wear out. Do not disassemble battery pack
and attempt to replace the batteries. Handling of these
batteries, especially when wearing rings and jewelry, could
result in a serious burn.
To obtain the longest possible battery life, we suggest the
following:
For lithium-ion batteries:
 Remove the battery pack from the charger once it is fully
charged and ready for use.
For battery pack storage longer than 30 days:
 Store the battery pack where the temperature is below
80°F and away from moisture.
 Store battery packs in a 30%-50% charged condition.
 Every six months of storage, charge the pack as
normal.
For nickel-cadmium batteries:
 Remove the battery pack from the charger once it is fully
charged and ready for use.
For battery pack storage longer than 30 days:
 Store the battery pack where the temperature is below
80°F.
 Store battery packs in a “discharged” condition.
BATTERY PACK REMOVAL AND
PREPARATION FOR RECYCLING
To preserve natural resources, please
recycle or dispose of batteries properly.
This product uses lithium-ion or nickel-cad-
mium batteries. Local, state or federal laws
may prohibit disposal of nickel-cadmium
batteries in ordinary trash.
Consult your local waste authority for infor-
mation regarding available recycling and/or
disposal options.
WARNING:
Upon removal, cover the battery pack’s terminals
with heavy-duty adhesive tape. Do not attempt to
destroy or disassemble battery pack or remove
any of its components. Lithium-ion and nickel-
cadmium batteries must be recycled or disposed
of properly. Also, never touch both terminals with
metal objects and/or body parts as short circuit
may result. Keep away from children. Failure to
comply with these warnings could result in fire
and/or serious injury.
MAINTENANCE
Li - Ion

19
WARRANTY
Proof of purchase must be presented when requesting war-
ranty service.
Limited to RIDGID® hand held and stationary power tools
purchased 2/1/04 and after. This product is manufactured
by One World Technologies, Inc. The trademark is licensed
from RIDGID, Inc. All warranty communications should be
directed to One World Technologies, Inc., attn: RIDGID Hand
Held and Stationary Power Tool Technical Service at (toll
free) 1-866-539-1710.
90-DAY SATISFACTION GUARANTEE POLICY
During the first 90 days after the date of purchase, if you are
dissatisfied with the performance of this RIDGID® Hand Held
and Stationary Power Tool for any reason you may return
the tool to the dealer from which it was purchased for a full
refund or exchange. To receive a replacement tool you must
present proof of purchase and return all original equipment
packaged with the original product. The replacement tool
will be covered by the limited warranty for the balance of
the 3 YEAR service warranty period.
WHAT IS COVERED UNDER THE 3 YEAR
LIMITED SERVICE WARRANTY
This warranty on RIDGID® Hand Held and Stationary Power
Tools covers all defects in workmanship or materials and nor-
mal wear items such as brushes, chucks, motors, switches,
cords, gears and even cordless batteries in this RIDGID®
tool for three years following the purchase date of the tool.
Warranties for other RIDGID® products may vary.
HOW TO OBTAIN SERVICE
To obtain service for this RIDGID® tool you must return it;
freight prepaid, or take it in to an authorized service cen-
ter for RIDGID® branded hand held and stationary power
tools. You may obtain the location of the authorized service
center nearest you by calling (toll free) 1-866-539-1710 or by
logging on to the RIDGID® website at www.ridgid.com.
When requesting warranty service, you must present the
original dated sales receipt. The authorized service center
will repair any faulty workmanship, and either repair or
replace any part covered under the warranty, at our option,
at no charge to you.
One World Technologies, Inc.
P.O. Box 35, Hwy. 8
Pickens, SC 29671
RIDGID® HAND HELD AND STATIONARY POWER TOOL
3 YEAR LIMITED SERVICE WARRANTY
WHAT IS NOT COVERED
This warranty applies only to the original purchaser at retail
and may not be transferred. This warranty only covers
defects arising under normal usage and does not cover any
malfunction, failure or defect resulting from misuse, abuse,
neglect, alteration, modification or repair by other than an
authorized service center for RIDGID® branded hand held
and stationary power tools. Consumable accessories pro-
vided with the tool such as, but not limited to, blades, bits
and sand paper are not covered.
RIDGID, INC. AND ONE WORLD TECHNOLOGIES, INC.
MAKE NO WARRANTIES, REPRESENTATIONS OR
PROMISES AS TO THE QUALITY OR PERFORMANCE
OF ITS POWER TOOLS OTHER THAN THOSE SPECIFI-
CALLY STATED IN THIS WARRANTY.
ADDITIONAL LIMITATIONS
To the extent permitted by applicable law, all implied
warranties, including warranties of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE, are disclaimed.
Any implied warranties, including warranties of merchant-
ability or fitness for a particular purpose, that cannot be
disclaimed under state law are limited to three years from the
date of purchase. One World Technologies, Inc. and RIDGID,
Inc. are not responsible for direct, indirect, incidental or con-
sequential damages. Some states do not allow limitations on
how long an implied warranty lasts and/or do not allow the
exclusion or limitation of incidental or consequential dam-
ages, so the above limitations may not apply to you. This
warranty gives you specific legal rights, and you may also
have other rights which vary from state to state.

20
983000-965
4-17-06 (REV:00)
OPERATOR’S MANUAL
18 VOLT/24 VOLT MaxSelect™
ADHESIVE/CAULK GUN
R8804
Customer Service Information:
For parts or service, contact your nearest RIDGID authorized service center. Be
sure to provide all relevant information when you call or visit. For the location of
the authorized service center nearest you, please call 1-866-539-1710 or visit us
online at www.ridgid.com.
The model number of this tool is found on a plate attached to the motor housing.
Please record the serial number in the space provided below. When ordering repair
parts, always give the following information:
Model No.
Serial No.
R8804