This is the model number of your compressor. It will be found on the flange above the fly wheel. Always mention this model number when communicating with us regarding this sprayer or when ordering repair parts.
This list is valuable. It will assure your being able to obtain proper parts service at all times. We suggest you keep it with other valuable papers.
"REG. U.S. PAT OFF."
This compressor was thoroughly tested and was found to operate perfectly before leaving the factory.
This compressor is equipped with factory packed and sealed ball bearings which will not require any attention during the life of the compressor.
Oil the motor or engine used to drive this machine as instructed by the manufacturer of that motor or engine.
When connecting this compressor to a line shaft or motor, use a pully of proper size to run it at approximately 1200 Revolutions per minute.
The motor pulley shipped with this compressor is the proper size for a 1/4 H.P. motor having 1/2" shaft and operating at a constant speed of 1700 to 1750 revolutions per minute.
When mounting a motor on this machine set it so belt will be snug but not too tight, just tight enough so it will run without slipping. The bolt slots in the base will fit several different makes of motor bases, but in some cases it may be necessary to file one or two of the slots or drill one or two holes to fit odd sized motor bases. Bolt the motor tightly in position, so that the motor pulley is in line with the fly wheel of the compressor. Then adjust the position of the compressor for proper belt tightness and lock it tightly by means of the four mounting screws.
The safety valve is adjustable from a minimum of about 10 lbs. to a maximum of 45 lbs. by screwing the safety valve cap in or out until desired pressure is obtained and fastening it in that position with the lock nut. We do not recommend setting this safety valve for a higher pressure than 45 lbs.
If the safety valve sticks at any time and does not close tightly, causing low pressure, take it apart and clean the ball and ball seat carefully, and see that no small particle of scale or other foreign matter is wedged on the seat. When cleaning this safety valve seat, be careful not to nick or scratch it with a hard tool, such as a screw driver. It is best, when cleaning this seat, to use a wooden stick and cloth, rather than some metal tool.
The discharge port is located on the small end of the compressor away from the motor and is fitted with a union socket on to which the hose is screwed. This socket may be removed for a standard 1/8" pipe fitting. For use as a vacuum pump the filter cap and cloth are removed from the top of the compressor and a standard 1/4" pipe is screwed into opening in the head. This compressor will function as a very practical pump for creating partial vacuum in small containers up to approximately 25 inches of mercury.
If the compressor fails to deliver the normal amount of air, examine the intake filter cloth and see that it has not become clogged with paint. If filter cloth has become fouled with paint, a new one may be cut from any loosely woven material which will allow air to pass freely.
When compressor is operated close to the object being sprayed, some of the paint may be drawn through the intake valve and after the compressor has been shut off for a time, this intake valve may become stuck to its seat by this paint as it dries. When this valve becomes so stuck, it might not open when the compressor is started again, and, of course, no air will be delivered. Whenever compressor fails to pump air or delivers a low pressure, examine the intake valve and see if it is free from the seat. It is not necessary to dismantle the machine in any way. To do this, just hold a pencil, stick, or rod on top of the intake valve disc and if this disc remains stationary while the compressor is running, free it from its seat by a downward push on the pencil.
If the intake value is working properly and compressor is not pumping satisfactorily, examine safety value and see that it is not leaking.
When neither intake valve nor safety valve is responsible for low pressure, take out the four screws on the top of compressor nearest the handle which hold the compressor head and examine the diaphragm for rupture. After a long period of service, this diaphragm will wear and blow through at some point. When this happens, it must be replaced by a new one. This replacement is made by simply removing the pull plate which clamps the diaphragm and piston to the connecting rod. To remove the pull plate, first insert a screw driver under the edge of the diaphragm and free this edge from the body casting over its entire circumference. Lift the diaphragm, grasp it firmly with both hands, and unscrew the pull plate by rotating the diaphragm in counterclockwise direction. To install new diaphragm, place it in correct position over the piston and screw the pull plate down against it. Then grasp the edge of the diaphragm in a clockwise direction. To install new diaphragm in a clockwise direction. Test the eight screws which hold the surge tank and valve bridge occasionally with a screw driver and see that they are tight so that no leakage will occur at these points. Also test the No. 8709 valve disc retainer for tightness.
For quick repair, to avoid interruption to your service, a diaphragm which will give good temporary results can be made from any rubber diaphragm stock obtained from your local supply house, or from a good grade of rubber sheet packing, which has a strong cloth insertion. Replacement diaphragm does not have to be the same thickness as original diaphragm. Use any thickness from 3/32" to 1/8". For the best results, however, you should obtain replacement diaphragm from the store where you purchased this compressor.
If compressor has been standing in a cold room, turn the fly wheel over by hand to see that it runs freely before starting. In this way, you can make certain that the motor is not being overloaded.
From time to time the condensed water vapor must be drained from the pulsation chamber. This is done by loosening drain cap at bottom of pulsation chamber and allowing water to drain out and then tightening cap.
All parts listed here may be ordered through any Sears retail store, or the mail order store which serves the territory in which you live.
1. Part Number
Prices subject to change without notice. All parts are shipped PREPAID
| Ilnion Socket | 01. 1 |
|---|---|
| Relief Valve Locknut | .05 |
| (Drain Valve Cap Net sold songrately | 75 |
| (Fibre Disc | .13 |
| Diaphragm | 25 |
| Relief Valve Spring Retainer | .15 |
| Relief Valve Ball | .05 |
| Relief Valve Spring | .10 |
| Valve Disc | .05 |
| Valve Spring | .05 |
| Valve Disc Retainer | .10 |
| Set Screw for Flywheel | .05 |
| Valve Bridge Dome | 1.50 |
| Air Pulsation Chamber | 1.50 |
| Diaphragm Ring | .35 |
| Piston | .75 |
| SPull Plate These parts not sold separately | .40 |
| (Pull Plate Screw (Not illustrated) | |
| Valve Disc Retainer | .10 |
| Steel Base | |
| Spring for Base Not sold separately | 1.25 |
| Union Socket |
| Price | S | Price | |||
|---|---|---|---|---|---|
| 2003 | Tank Painted | 7.50 | 3021 | Pressure Gauge | 1 50 |
| 2005 | Tank Band Tie Bolts (2 required) | .10 | 6014 | Nut for Castor (4 required) | 05 |
| 2010 | Motor Pulley for 1/3 H.P. Motor | .85 | 7786 | 1/8" Close Nipple | 10 |
| 2014 | Copper Tubing | .35 | 7820 | Drain Cock | 20 |
| 2015 | Steel Base drilled to take Tank Bands | 1.00 | 8460 | Nut for 8731 Screw | |
| 2016 | Steel Band-Compressor End | .70 | 8510 | Galvanized Tee | 15 |
| 2017 | Steel Band-Motor End | .70 | 8514 | Dole Elbow (2 required) | 15 |
| 2023 | Castors (4 required) | .25 | 8731 | Screw for Tank Band | 13 |
| a part of the second | 00 |
We suggest you write your orders for repair parts like this sample:
|
Sears, Roebuck and C
Enclosed find my chec for my spray gun, mo |
Lo.
k for $0.60 for which please send del number 130.871: |
I me prepaid by parcel post the following parts |
|---|---|---|
|
l ea. No. 3239 Diaphragm
l ea. No. 8704 Diaphragm R |
||
|
Total.
Yours truly, John Marten, Boy |
$ .60
x 128, Richmond, Ind. |




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