TMG TMG-GAC40 User manual

40Gallon Two-Stage Air Compressor
Models:TMG-GAC40
Please read the product manual completely before assembly
Check against the parts list to make sure all parts are received
Wear proper safety goggles or other protective gears while in assembly
Missing parts or questions on assembly?
Please call: 1-877-761-2819 or email: [e-mail]
Do not return the product to dealer, they are not equipped to handle your requests
PRODUCT MANUAL
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V2021.05.12

 CO Poisoning: Exhaust from engine contains carbon monoxide, a poisonous gas that can cause carbon
monoxide poisoning and possible death if inhaled. ONLY run air compressor OUTDOORS and at least 20 feet
from the home, away from windows, vents and air intakes, to allow proper ventilation. If you start to feel sick,
dizzy, or weak while using the air compressor, shut off the engine and get to fresh air RIGHT AWAY.

Injection Injury: High-pressure air stream can pierce skin and underlying tissues, leading to serious injury
and possible amputation. Such an injection injury can result in blood poisoning and/or severe tissue damage.

Flying Debris: High-pressure air stream can cause flying debris and possible surface damage.
 Electric shock: Operating equipment in wet conditions or near water can cause electric shock.
 Not For Breathing Air: compressors are NOT designed, intended, or approved for supplying breathing air. No
compressed air should be used for breathing unless air is treated in accordance with applicablestandards.
 Fire/Explosion: Sparks from air powered tool heads or attachments can ignite fuel or other flammable liquids
or vapors in the vicinity. Exceeding the maximum pressure for air tools or attachments could cause them to
explode.

Burns: Compressor pump, engine and discharge tubing are hot surfaces that can cause
burn injuries. Detailed safety information about these hazards appears throughout this manual.
WARNING: SPECIAL HAZARDS
Gasoline Stationary Air Compressor
(For Outdoor Use only)
This belt-driven compressor has a 2-stage 2-cylinder pump, an engine with cast iron cylinders
for long life, and a compact design rated for 175 maximum PSI. Its continuous-duty rating
ensures long-lasting performance, and its cast iron pump head ensures superior heat
dissipation. Lift eyes are provided for lifting or tying down.
Read and understand this Owner’s Manual completely before using and keep this manual for
review. Failure to properly set up, operate, and maintain this compressor in accordance to this
manual could result in injury or death to operator or bystanders.
Equipment Protection Quick Facts
Inspect Upon Delivery: FIRST! Inspect for missing or damaged components. See “Initial Set-
Up” section for where to report missing or damaged parts.
Add Engine Oil: Engine is shipped without oil. See engine manual for instructions on
capacity and viscosity recommendations.
Check Pump Oil: Pump is shipped with oil. Check the pump oil level before starting. See
“Preparing for Operation”
section of this Owner’s Manual for capacity and viscosity.
Use Mechanical Lifting Equipment: Compressor is shipped on a pallet and is too heavy to
handle manually. Use proper lifting equipment for unloading and moving to installation site.
Lifting eyes are provided.
Run Pump Unloaded for Break-in Period: Before initial use, open ball valve and run
compressor for 20 minutes to break in pump parts.
Follow Maintenance Schedule: Engine, pump, air filter, and tank require periodic inspection
and servicing to keep compressor functioning efficiently. See “Maintenance Schedule
Summary” for frequency of servicing.
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EQUIPMENT PROTECTION QUICK FACTS...............................................................................2
TABLE OF CONTENTS................................................................................................................3
ABOUT YOUR AIR COMPRESSOR.............................................................................................5
SPECIFICATIONS.........................................................................................................................6
COMPONENT IDENTIFICATION..................................................................................................7
SAFETY.........................................................................................................................................8
Hazard Signal Word Definitions........................................................................................................8
SAFETY LABELING......................................................................................................................9
Safety Decal Locations.....................................................................................................................9
Safety Decals..............................................................................................................................................10
INITIAL SET-UP...........................................................................................................................11
Step 1. Inspect & Unpack....................................................................................................................11
Step 2. Select Suitable Location.........................................................................................................11
Outdoor Use Only...........................................................................................................................11
Step 3. Mounting..................................................................................................................................12
Mounting on Service Vehicle..........................................................................................................12
Installing Discharge Piping..............................................................................................................12
Step 4. Electrical Starting: Battery Procedure..................................................................................12
Battery Connection.........................................................................................................................12
Battery Disconnection.....................................................................................................................13
Install Spark Arrestor(if Required)...................................................................................................13
OPERATION................................................................................................................................14
Follow Safety Rules for Operation.....................................................................................................14
Preparing for Operation.......................................................................................................................14
Check/Add Oil to the Engine and Pump..........................................................................................14
Check and Fill Gasoline Tank.........................................................................................................15
Inspect Fuel System/Check for Leaks.............................................................................................15
Start-Up Procedures............................................................................................................................15
Air Hose and Tool Use.........................................................................................................................16
Attaching Air Hose and Tools.........................................................................................................16
Using Compressor for Spraying.........................................................................................................17
Moisture in Compressed Air............................................................................................................17
Shutdown Procedures.........................................................................................................................17
STORAGE....................................................................................................................................18
Between-Use Storage..........................................................................................................................18
Table of Contents
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Drain air receiver tank.....................................................................................................................18
Choose a storage location..............................................................................................................18
Long term storage preparation...........................................................................................................18
MAINTENANCE & REPAIR.........................................................................................................19
MAINTENANCE SCHEDULE SUMMARY...................................................................................19
DETAILED INSTRUCTIONS – MAINTENANCE & REPAIR.......................................................19
Inspect Safety/Relief Valve.............................................................................................................19
Inspect Air Filter..............................................................................................................................19
Inspect Compressor for Air Leaks...................................................................................................19
Engine Maintenance.......................................................................................................................20
Change Pump Oil............................................................................................................................20
Drain Receiver Tank and Inspect Tank...........................................................................................20
Check Drive Belt for Tension and Alignment...................................................................20
Inspect & Clean Spark Arrestor (if Equipped)..........................................................................21
Keep Compressor Clean.................................................................................................................21
TROUBLESHOOTING.................................................................................................................22
PARTS EXPLOSION....................................................................................................................23
PARTS LIST.................................................................................................................................24
PUMP EXPLOSION.....................................................................................................................25
PUMP PARTS LIST.....................................................................................................................26
PNEUMATIC SCHEMATIC..........................................................................................................27
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Thank you for purchasing a air compressor! It
is designed for long life, dependability, and
top performance.
Intended Use. It provides compressed air
primarily used for operating air tools and
pressurizing other non- tool objects such as
tires.Special precautions are necessary when
used for cleaning. It is not to be used to
supply breathing air.
Note: Do not use for other purposes, as
unforeseen hazards or equipment
damage may result.
Power Source. The air compressor is
powered by a gasoline engine.
Supplies Required. Normal operation will
require you to supply:
 Compressor pump oil
 Gasoline
 Engine oil
 Personal Protection Equipment
See “Specifications”section of this
manual for more detail.
Site Location. Intended for outdoor use only.
Personal Protection. Wear safety apparel
during operation, including safety glasses
with side and top protection. Ear protection
is also recommended if working near any
operating engine.
Adult control only. Only trained adults
should set up and operate the air
compressor. Do not let children operate.
Under The Influence. Never operate, or let
anyone else operate, the air compressor while
fatigued or under the influence of alcohol,
drugs, or medication.
Keep this manual for reference and review.
ATTENTION: Rental Companies
and Private Owners who loan this
equipment to others!
All persons to whom you rent/loan this air
compressor must have access to and read this
manual. Keep this owner’s manual with the air
compressor at all times and advise all persons
who will operate the machine to read it. You must
also provide personal instruction on how to safely
set-up and operate the air compressor and remain
available to answer any questions a
renter/borrower might have.
About Your Air Compressor
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Specifications
MODEL
Model #
TMG-GAC40
FLOW OUTPUT
Max. Pressure Rating
175 PSI
Volume Rating
@ 90 PSI
24.4 CFM
Receiver Capacity
40 gal.
ENGINE
Engine
LONCIN G300EA
Engine Displacement
(cc)
302 cc
DIMENSIONS / COMPONENTS
Length
41”
Width
18”
Height
40”
Weight
420 lbs.
Mounting Hole
Diameter
0.5”
Suggested Mounting
Bolt Diameter
7/16”
SUPPLIES REQUIRED (not included)
Engine Oil
Refer to engine owner’s manual
Pump Oil
(shipped with oil, but
refills required)
SAE 30 non-detergent pump oil
Pump Oil Capacity
38 oz.
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Component Identification
1. Engine Controls: Location of choke, engine
speed and fuel valve.
2. Engine: NOT shipped with oil. Refer to engine
Owner’s Manual for proper oil and
capacity.
3. Engine On/Off/Start Switch: Turn switch to
“ON” when using recoil to start engine. Turn
switch to “START” when using electric start.
CAUTION: Unit is not equipped with high
temperature “auto shutoff”.Do NOT allow to
overheat.
4. Lifting Eyes: May also be used as tie
down locations.
5. Ball Valve: 1/2” NPT air supply outlet.
Compressed air supply point. A pressure
regulator and/or quick connect fittings can
attach here.
6. Pressure Gauge: Liquid filled gauge.
Shows pressure in receiver tank.
7. Air Receiver / Storage Tank: 40 gallon
tank.
8. Discharge Tube: Carries compressed air from
pump to safety/check valve, and then to the
storage tank. It becomes very hot during use
and can cause severe burns. Never touch.
9. Tank Drain Valve: Used to remove moisture
from air after compressor is shut off and air
emptied from tank. Drain moisture daily after
each use.
10. ASME Safety/Check Valve: Automatically
releases air if tank exceeds preset pressure max.
of 180 PSI. A check valve is a pressure release
port. Pull valve pin to relieve pressure from
receiver tank.
11. Unloader: Vents discharge air to
atmosphere in start/stop operation.
12. Air Compressor Pump: Shipped with oil.
13. Belt Guard: Covers belt, engine pulley and
flywheel. NEVER operate compressor without
belt guard in place.
14. Compressor Air Filter: Keep clean and particle
free. See “Pump Explosion and Pump Parts
List” for replacement part number.
15. Magnetic Oil Drain Plug: Removals allows for
drainage of oil from pump. Attracts metal
particles that could damage pump.
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Safety
Hazard Signal Word Definitions
This is the safety alert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or death.
DANGER (red) indicates a hazardous situation, which if
not avoided, will result in death or serious injury.
WARNING (orange) indicates a hazardous situation, which
if not avoided, could result in death or serious injury.
CAUTION (yellow), used with the safety alert symbol,
indicates a hazardous situation, which if not avoided, could
result in minor or moderate injury.
CAUTION (yellow), without the safety alert symbol, is
used to address practices not related to personal injury.
NOTICE is used to address practices not related to personal injury.
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DANGER
WARNING
CAUTION
CAUTION
NOTICE

ALWAYS make sure safety labels are in place and in good condition.
WARNING:
Safety Labeling
Safety Decal Locations
On-Product Warning
Labels
Location
Description
1
Air Compressor Instructions
2
Poisonous Gas
3
Burn Hazard, Hot Muffler
4
Fuel Fire Explosion Hazard
5
Engine Electric Start – Battery Hazard
6
Air Compressor Safety
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Safety Decals
6
1
2
3
5
4
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