Harbor Freight Tools Sander 34202 User Manual

40 LB. PRESSURIZED  
SANDBLASTER  
ASSEMBLY and OPERATING INSTRUCTIONS  
3491 Mission Oaks Blvd. / Camarillo, CA 93011  
Copyright © 1997 by Harbor Freight Tools®. All rights reserved.  
No portion of this manual or any artwork contained herein may be reproduced in any  
shape or form without the express written consent of Harbor Freight Tools.  
For technical questions and replacement parts, please call 1-800-444-3353.  
 
9.  
DO NOT ABUSE THE POWER CORD. Do not yank compressor’s cord to disconnect it  
from the receptacle. Do not carry tools by the cord.  
10. DO NOT OVERREACH. Keep proper footing and balance at all times. Do not reach over  
or across running machines.  
11. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for better and safer  
performance. Follow instructions for lubricating and changing accessories. Inspect  
compressor’s cord periodically and, if damaged, have them repaired by an authorized  
technician. Inspect all hoses for leaks prior to use. The handles must be kept clean, dry,  
and free from oil and grease at all times.  
12. REMOVE ADJUSTING KEYS AND WRENCHES. Make it a habit to check that keys and  
adjusting wrenches are removed from the tool or machine work surface before plugging it  
in.  
13. AVOID UNINTENTIONAL STARTING. Make sure the nozzle valve is in the off position  
when not in use, and before plugging in air compressor.  
14. STAY ALERT. Watch what you are doing, use common sense. Do not operate any tool  
when you are tired.  
15. CHECK DAMAGED PARTS. Before using any tool, any part that appears damaged  
should be carefully checked to determine that it will operate properly and perform its  
intended function. Check for alignment and binding of moving parts; any broken parts or  
mounting fixtures; and any other condition that may affect proper operation. Any part that is  
damaged should be properly repaired or replaced by a qualified technician. Do not use the  
tool if any switch does not turn on and off properly.  
16. REPLACEMENT PARTS AND ACCESSORIES. When servicing, use only identical  
replacement parts. Use of any other parts will void the warranty. Only use accessories  
intended for use with this tool. Approved accessories are available from Harbor Freight  
Tools.  
17. DO NOT OPERATE TOOL IF UNDER THE INFLUENCE OF ALCOHOL OR DRUGS.  
Read warning labels on prescriptions to determine if your judgment or reflexes are  
impaired while taking drugs. If there is any doubt, do not operate the tool.  
18. DRAIN COMPRESSOR EVERY DAY. Do not allow moisture to build up inside the  
compressor. Do not allow compressor to sit pressurized for longer than one hour.  
19. MAKE SURE ALL EQUIPMENT IS RATED TO THE APPROPRIATE CAPACITY. Make  
sure that regulator is set at no higher than 125 PSI.  
20. PERIODICALLY CHECK THE ABRASIVE MEDIUM DELIVERY EQUIPMENT. All  
equipment that comes in contact with the abrasive medium after it leaves the pressure  
tank is subjected to the sandblasting action so will wear out more quickly than other  
components.  
21. RELEASE THE AIR PRESSURE OF THE TANK BEFORE OPENING. Open the air  
supply valve and the nozzle to release pressure. Make sure pressure gauge reads “0”  
before opening.  
Page #3 -- SKU 34202  
 
22. MAINTAIN CORRECT AIR PRESSURE WHENEVER WORKING. Do not allow pressure  
to exceed 125 PSI. If the safety valve does not release excess air pressure, stop all work  
and use the air compressor to release pressure in the tank. Do not attempt any repairs to  
the Sandblaster until its gauge reads “0”.  
AIR/SAND SUPPLY REQUIREMENTS  
Hose  
ID  
3/8"  
3/8"  
1/2"  
1/2"  
Hose  
Length  
50 ft.  
25 ft.  
50 ft.  
25 ft.  
Nozzle  
ID  
0.1"  
0.125"  
0.15"  
0.175"  
Compressor  
HP  
2
4
7
CFM  
@ 125 PSI  
6
12  
20  
25  
Sand Use  
Per Hour  
60 lbs.  
100 lbs.  
150 lbs.  
200 lbs.  
10  
UNPACKING  
When unpacking, sort all pieces and check according to the parts list and diagram to make sure all  
parts are included. All sizes listed are approximate. All ValveAssemblies are individually packed. If  
any parts are missing or broken, please call Harbor Freight Tools at the number on the cover of this  
manual.  
Page #4 -- SKU 34202  
 
ASSEMBLY  
NOTE: Use Teflon® Pipe Tape on all threaded joints. Make sure all joints are  
securely tighten.  
Intake Manifold  
Intake  
Manifold  
(#14)  
Pressure  
Gauge  
(#15)  
Refer to Figure 1.  
Step1: Get out the INTAKE MANIFOLD (#14),  
PRESSURE GAUGE (#15), BRASS  
THROTTLING VALVE (#18A), 3/8" 1/4"  
NIPPLE CONNECTOR (#20), and JOINT  
PIPE (#13).  
Brass  
Throttling Valve  
(#18A)  
Joint Pipe  
(#13)  
Step2: Attach the PRESSURE GAUGE to the  
top of the INTAKE MANIFOLD. Turn  
PRESSURE GAUGE so that it’s face is  
over the lower side hold of the INTAKE  
MANIFOLD.  
Nipple  
Connector  
(#20)  
Figure 1 — Intake Manifold Assembly  
Step3: Attach the BRASS THROTTLING VALVE to the bottom of the INTAKE MANIFOLD.  
Step4: Attach the 3/8" end of the NIPPLE CONNECTOR to the other end of the BRASS  
THROTTLING VALVE.  
Step5: Attach the JOINT PIPE to the lower side hole of the INTAKE MANIFOLD.  
Page #5 -- SKU 34202  
 
Water Trap  
Refer to Figure 2.  
Nipple Connector  
(#16)  
Male/Female  
Adapter  
(#19)  
Brass Air  
Supply Valve  
(#18)  
Water Trap  
(#17)  
Figure 2 — Water Trap Assembly  
Step1: Get out the WATER TRAP (#17), two 3/8" NIPPLE CONNECTORS (#16), the BRASS  
AIR SUPPLY VALVE (#18), and the MALE/FEMALEADAPTER (#19).  
Step2: Attach the 3/8" NIPPLE CONNECTORS to either side of the WATER TRAP.  
Step3: On the top of the WATER TRAP is an arrow. Attach the BRASS AIR SUPPLY VALVE to  
the NIPPLE CONNECTOR that the arrow is facing away from.  
Step4: Attach the MALE/FEMALEADAPTER to the BRASSAIR SUPPLY VALVE.  
Page #6 -- SKU 34202  
 
Sand Control Valve  
Refer to Figure 3.  
Step1: Get out the TANK (#1), the SAND  
CONTROL VALVE (#18B), two NIPPLE  
CONNECTORS (#16), and the SAND  
OUTLET MANIFOLD (#22).  
Sand Control  
Valve  
Tank  
(#1)  
Step2: Attach one of the NIPPLE  
CONNECTORS to the bottom of the  
TANK (#1).  
(#18B)  
Step3: Attach the SAND CONTROL VALVE to  
the other end of the NIPPLE  
CONNECTOR.  
Nipple  
Connector  
(#16)  
Sand Outlet  
Manifold  
(#22)  
Step4: Attach the other NIPPLE CONNECTOR  
to the other end of the SAND CONTROL  
VALVE.  
Step5: Attach the other end of the NIPPLE  
CONNECTOR to the side hole of the  
SAND OUTLET MANIFOLD.  
Figure 3 — Sand Control Valve Assembly  
Nozzle Shut Off Valve  
Refer to Figure 4.  
Steel Shut  
Off Valve  
HOSE ADAPTER  
(#18C)  
Hose Adaptor  
(#25)  
Step1: Get out the  
(#25), the STEEL  
SHUT OFF VALVE  
(#18C), a NIPPLE  
(#26)  
CONNECTOR (#16),  
the GASKET (#26),  
the desired size  
Nipple  
Connector  
(#16)  
Gasket  
Nozzle Cap  
Nut  
(#28)  
Nozzle  
(#27A-D)  
NOZZLE (#27A-D),  
and the NOZZLE CAP  
NUT (#28).  
Figure 4 — Nozzle Shut Off Valve  
Step2: Put the front of the NOZZLE through the NOZZLE CAP NUT.  
Step3: Attach the NOZZLE CAP NUT to the NIPPLE CONNECTOR with the GASKET between  
the NIPPLE CONNECTOR and the NOZZLE. The flat end of the GASKET should face the  
NIPPLE CONNECTOR.  
Step4: Attach the other end of the NIPPLE CONNECTOR to one side of the STEEL SHUT OFF  
VALVE.  
Page #7 -- SKU 34202  
 
Step5:Attach the HOSE ADAPTER to the other end of the STEEL SHUT OFF VALVE.  
Sand Control Valve/ Nozzle Shut Off Valve  
Refer to Figure 5.  
Sand Hose  
Sand Control  
Valve Assembly  
Hose Clamp  
(#23)  
Nozzle Shut Off  
Valve Assembly  
Figure 5 — Sand Control Valve / Shut Off Valve Assembly  
Step1: Get out the Sand Control Valve & Nozzle Shut Off Valve Assemblies, the SAND HOSE  
(#24), and the two HOSE CLAMPS (#23).  
Step2: Slide the HOSE CLAMPS over either side of the SAND HOSE. Do not tighten yet.  
Step3: Slide one end of the SAND HOSE onto the Nozzle Shut Off Valve Assembly’s HOSE  
ADAPTER (#25). Tighten the HOSE CLAMP very securely.  
Step4: Slide the other end of the SAND HOSE onto the Sand Control Valve Assembly’s SAND  
OUTLET MANIFOLD (#22). Tighten the HOSE CLAMP very securely.  
Page #8 -- SKU 34202  
 
Top Assembly  
Refer to Figure 6.  
Nipple  
Connector  
(#16)  
Joint Pipe  
(#13)  
Air Cap  
(#12)  
Nipple  
Connector  
(#16)  
Gasket  
(#11)  
Air Hose  
(#21)  
Tank  
(#1)  
Figure 6 — Top Assembly  
Step1: Get the Intake Valve Assembly, the Water Trap Assembly, the Tank Assembly, the TANK  
CAP (#12), the O-RING (#11), and the AIR HOSE (#21).  
Step2: Attach the Water Trap Assembly’s NIPPLE CONNECTOR (#16) to the upper side  
INTAKE MANIFOLD (#14).  
Step3: Attach the JOINT PIPE (#13) to the upper side port of the TANK (#1).  
Step4: Put the O-RING into the fill port of the TANK.  
Step5: Screw the TANK CAP onto the fill port of the TANK.  
Step6: Attach the female end of the AIR HOSE to the BRASS THROTTLING VALVE’S (#18A)  
NIPPLE CONNECTOR (#16).  
Step7: Attach the male end of the AIR HOSE to the SAND OUTLET MANIFOLD(#22),  
underneath the TANK.  
Page #9 -- SKU 34202  
 
Handle Bars  
Refer to Figure 7.  
Handle Grip  
(#7)  
Right Handle  
(#6-R)  
Left Handle  
(#6-L)  
Screw  
(#8)  
Washer  
(#31)  
Nut  
(#9)  
Figure 7 — Handle Bar Assembly  
Step1: Get out the two HANDLE BARS (#6), the two HANDLE GRIPS (#5), the four SCREWS  
(#8), four NUTS (#9), and four WASHERS (#31).  
Step2: Slide the HANDLE GRIPS onto the HANDLE BARS.  
Step3: Attach both HANDLE BARS to the TANK (#1) using the four SCREWS, NUTS, and  
WASHERS. The HANDLE BARS must curve back and the holes in their bottoms must  
be parallel to each other. The WASHERS go between the NUTS and the TANK.  
Page #10 -- SKU 34202  
REV 01/01  
 
Wheels and Foot  
See Figure 8.  
3
2
3
4
5
2
3
Figure 8 - Wheel and Foot Attachment  
Step 1: Get out the two WHEELS (#2), the three COTTER PINS (#3), the FOOT (#4) and the  
AXLE (#5).  
Step 2: Attach the FOOT to the TANK (#1) using one of the COTTER PINS.  
Step 3: Attach one of the WHEELS to the AXLE using one of the COTTER PINS.  
Step 4: Slide the AXLE through the hole in the bottom of the two HANDLE BARS (#6).  
Step 5: Attach the other WHEEL to the AXLE using the remaining COTTER PINS.  
Safety Valve  
Step 1: Screw the SAFETY VALVE (#10) into the hole in the top of the TANK (#1).  
Page #11 -- SKU 34202  
 
OPERATIONS  
LoadingAbrasives  
Warning!  
Step 1: Check to insure the abrasives are dry and clean  
so that they do not clog the unit.  
Always wear your hood, dust  
mask, and heavy-duty canvas  
gloves when operating the  
Sand Blaster.  
Step 2: Close the AIR SUPPLY VALVE (#18) by turning it to  
the horizontal position.  
Step 3: Open the NOZZLE SHUT OFF VALVE (#18C) by turning it to the vertical position.  
Step 4: Make sure the PRESSURE GAUGE (#15) reads “0”.  
Step 5: Remove the TANK CAP (#12).  
Note:  
Place your Air Compressor in  
another room to prevent  
damage to it.  
Step 6: Using the FUNNEL (#29), pour the selected  
abrasive medium into the TANK (#1). Do not fill more than  
3/4 of the TANK. If humidity in your region is 90% or more,  
only fill the tank 1/2 way, and check the WATER TRAP (#17) more frequently.  
Step 7: Close the TANK CAP.  
Step 8: Close the NOZZLE SHUT OFF VALVE and open theAIR SUPPLY VALVE.  
Step 9: Check for leaks at the TANK CAP as pressurization begins.  
Step 10: Open the NOZZLE SHUT OFF VALVE to begin blasting.  
Page #12 -- SKU 34202  
 
MAINTENANCE  
1.  
2.  
Pay particular attention to the SAND HOSE (#24), the NOZZLE SHUT OFF VALVE (#18C),  
and the NOZZLES (#27A-D) as they will wear out much more quickly than the other  
pieces.  
The SAND HOSE needs replacing when it’s side walls develop leaks or show blisters in  
the surface. Do not use if any of these problems are present.  
PARTS LIST  
Item#  
1
2
3
4
5
6 *  
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
18A  
Description  
Tank  
Wheel  
Cotter Pin  
Foot  
Axle  
Handle Bar  
Handle Grip  
Pan Screw  
Hex Nut  
Safety Valve  
O-Ring  
Qty  
1
2
3
1
1
2
2
4
4
1
1
1
1
1
1
5
Item#  
18B  
18C  
19  
20  
21  
22  
23  
24  
25  
Description  
Qty  
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
3/8" Steel Sand Control Valve  
3/8" Steel Shut Off Valve  
Male/FemaleAdapter  
3/8" 1/4" Nipple Connector  
Air Hose  
Sand Outlet Manifold  
Hose Clamp  
Sand Hose  
HoseAdapter  
Gasket  
9/64" Nozzle  
1/8" Nozzle  
7/64" Nozzle  
26  
27A  
27B  
27C  
27D  
28  
29  
30  
31  
32  
Tank Cap  
Joint Pipe  
Intake Manifold  
Pressure Gauge  
3/8" Nipple Connector  
Water Trap  
3/32" Nozzle  
Nozzle Cap Nut  
Funnel  
Hood  
Washer  
1
3/8" Brass Air Supply Valve 1  
3/8" Brass Throttling Valve  
1
Instruction Manual  
* Note: Left Handle is #6-L, Right Handle is #6-R.  
Page #13 -- SKU 34202  
REV 01/01  
 
PARTS DRAWING  
19  
18  
16  
17  
16  
15  
14  
12  
11  
13  
10  
18A  
20  
7
6
8
3
21  
5
31  
9
2
3
16  
1
14  
18B  
16  
22  
25  
18C  
16  
23  
26  
27A-D  
24  
23  
28  
Page #14 -- SKU 34202  
 

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