owners manual
MODEL NO. 756.18887
CAUTION
Read Rules for Safe Operation and Instructions Carefully
AIR DIE GRINDER
CRAFTSMAN
REAR EXHAUST
- Assembly
- Operating
- Repair Parts
Sold by SEARS, ROEBUCK AND CO., Chicago, IL 60684 U.S.A. and SIMPSONS-SEARS LIMITED, Toronto, Ontario, Canada
Sears
Part No. 203131725
Printed in U.S.A. 1/78
CRAFTSMAN quality PNEUMATIC TOOL
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FULL ONE YEAR WARRANTY ON CRAFTSMAN PNEUMATIC TOOLS
If this CRAFTSMAN Pneumatic tool fails due to a defect in material or workmanship within one year from the date of purchase, Sears will repair it free of charge. Warranty service is available by simply returning the tool to the nearest Sears store or Service Center
Warranty service is available by simply returning the tool to the nearest Sears store or Service Center at throughout the United States.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.
SEARS, ROEBUCK AND CO., BSC 41-3 SEARS TOWER, CHICAGO, IL 60684
INTRODUCTION
This CRAFTSMAN Die Grinder is highly rated for blending and smoothing weld, casting clean-up, burr removal and general purpose grinding operations.
This Die Grinder features a compact, light weight design (1 1/4 lb. (.06 kg) and a rear exhaust which directs air away from the work area. A rugged air motor provides over 1/2 H. P. of vibration free performance at 22,000 RPM, a built-in speed regulator gives maximum control and a range of RPM selection to adapt various applications and metal removal. Full ball bearing construction and steel end plates assure long die grinder life and keep repair costs at a minimum. A self closing throttle is standard which shuts off the Die Grinder when throttle lever is released.
AIR SUPPLY
An air supply to operate this Die Grinder at its full efficiency must use an air compressor capable of delivering 10 SCFM at 90 PSI. The recommended air tank must have a capacity of at least 30 gallons. Minimum air hose size must be 5/16" I.D. (10mm).
An air hose hookup similar to that shown below is recommended.
PREPARING FOR OPERATION
1. Blow out air line and drain any water from air supply.
2. Pour approximately one (1) teaspoon of Allstate Upper Valve Lube or CRAFTSMAN Light Machine Oil 9-55441 into air inlet end of motor housing (Key No. 9). This procedure is recommended to flush any harmful deposits out of Die Grinder and to keep internal parts well lubricated.
LUBRICATION
Use Allstate Upper Valve Lube or CRAFTSMAN Light Machine Oil 9-55941. The use of an air line fogger. Sears 30-16017, installed in the air supply leading to this Die Grinder is recommended to assure a constant, adequate supply of lubricant. See Typical Air Hose and Coupling Assembly.
At each inspection period clean ball bearing (Key No. 10) and repack 25% of the open space within ball bearing with Sears Moly EP Lithium Grease 28A59071. All lubricants are available at Sears Retail and Catalog stores.
SAFETY CAUTIONS
WARNING
The operation of Power Tools can result in serious eve damage if proper precautions are not followed.
Always wear safety glasses or eye shields before commencing Power Tool operation. Wide Vision Safety Masks for use over spectacles or standard safety glasses are available at Sears Retail and Catalog stores.
Avoid inhaling dust from grinding operation by using an approved type dust mask or a dust exhaust system.
In addition to eve protection observation of the following safety procedures is highly recommended:
1. Daily before using, with no mandrel in Die Grinder, check spindle speed with a tachometer. If overspeeding is noted check for excessive air pressure.
To check air pressure install a gauge tee with air gauge between whip hose and live air hose as shown in illustration.
2. Use grinding accessories that are in good condition and rated at or over the actual spindle speed.
3. When using mounted points make sure mandrel is fully seated and secured in the collet chuck. For maximum mandrel overhang see American National Safety Code B7.1
ERRATIC ACTION / LOSS OF POWER
If during operation a loss of power or erratic action takes place check the following: 1. Air pressure - for rated performance 90 PSI air pressure is required at the tool with tool operating. To check air pressure see diagram below.
2. Check compressor output - lowered compressor output will cause loss of power at the tool.
3. Excessive number of tools operating off a single air line - disconnect tools overloading line.
4. Hose or connections of improper size or in poor condition - see "Typical Air Hose and Coupling Assembly".
5. Wet or dirty air - dirt/foreign matter in air supply will impede action of the Die Grinder. Flush Die Grinder with an equal mixture of Sears Upper Valve Lube and kerosene.
If the above steps fail to restore the full efficiency of the Die Grinder proceed as follows:
1. Unscrew and remove housing cap (Key No. 23) and clamp nut (Key No. 24) from motor housing (Key No. 9).
2. Pull air motor assembly from motor housing.
3. Using a suitable V-plate press rear end plate (Key No. 11) off rotor (Key No. 14).
4. Remove four rotor blades (Key No. 15). Inspect rotor blades carefully for wear, chipping or separating. If any of these conditions are noted replace with new lightly oiled rotor blades.
5. Assembly is essentially a reverse of the above described disassembly. See Parts Diagram.
NOTE: Care must be taken to clean all parts of foreign particles before assembly. 6. If above steps do not restore Die Grinder to full efficiency, return Die Grinder to your nearest Sears Store.
CRAFTSMAN AIR DIE GRINDER - MODEL NUMBER 756.18887
REAR EXHAUST
PARTS LIST
203125472 End Plate Spacer
2031219470 [Shap Hing 203131947 [Collet Bushing (1/8'')
203127257 Logo Decal (Not Shown)
203131723 Name Plate
203125476 Snap Ring
203125475 Exhaust Sleeve
26 27
28
29
30
31 32
Additional Accessories to use with 756.18887 Grinder
|
Key
No. |
Part No. | Description | Part No. | Description |
|---|---|---|---|---|
| 1 | 201039719 | Throttle Valve Spring | 201123029 | Collet Adapter - 1/4" |
| 2 | 203124505 | Throttle Valve | 201127827 | Carbide Burr-Cylinderical Shape 3/8" Dia. |
| 3 | 201100129 | "O" Ring | 201127828 | Carbide Burr-Ball Shape 1/2" Dia. |
| 4 | 203124507 | Throttle Valve Bushing | 201127829 | Carbide Burr-Free Shape 3/8" Dia. |
| 5 | 203124508 | Throttle Lever | 201127830 | Carbide Burr-14° Included Angle 3/8" Dia. |
| 6 | 201114089 | Roll Pin | 201127826 | Carrying Case |
| 7 | 216043001 | "O" Ring | 201119327 | Chuck Wrench-Open End (5/8 x 3/4) |
| 8 | 203124511 | Throttle Valve Plug | 201116858 | Chuck Wrench-9/16 Collet |
| 9 | 203125471 | Motor Housing (Incl: Key No. 4) | 201131725 | Instruction & Parts Book |
| 10 | 202039709 | Ball Bearing |
Construction of the second s
Second s Second se |
|
| 11 | 203125474 | Rear End Plate (Incl: Key No. 12) | ||
| 12 | 201068086 | Roll Pin (2 Reg'd) | ||
| 13 | 203125477 | Liner | ||
| 14 | 203124517 | Rotor | ||
| 15 | 201066327 | Rotor Blade (4 Req'd) | ||
| 16 | 203124519 | Rotor Collar | 2 · | |
| 17 | 203125473 | Front End Plate (Incl: Key No. 12) | ||
| 18 | 206117611 | Ball Bearing | ||
| 19 | 203124522 | Shim (As Req'd) | ||
| 20 | 203124523 | Spindle Chuck | ||
| 21 | 203124524 | Collet (1/4" Capacity) | ||
| 22 | 203124525 | Collet Nut | ||
| 23 | 203124526 | Housing Cap | ||
| 24 | 203125478 | Clamp Nut | ||
| 25 | 203124528 | Air Regulator | ||
| 26 | 211083071 | "O" Ring |
Sold by SEARS, ROEBUCK AND CO., Chicago, IL 60684 U.S.A. and SIMPSONS-SEARS LIMITED, Toronto, Ontario, Canada
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