General JM-3000 Gas Jet Pipe Cleaners Instruction Manual

PIPE CLEANERS
JM-3000™ Gas Jet
Operating Instructions

JM-3000 Gas Jet Pipe Cleaners

Your JM-3000 Jet-Set gas-powered water jet is designed to give you years of trouble-free, profitable service. However, no machine is better than its operator.
Read, understand and follow all safety warnings and instructions provided with the product. Failure to follow the warnings and instructions may result in electric shock and/or serious injury. Save all warnings and instructions for future reference.
SAVE THESE INSTRUCTIONS!

| WARNING
---|---
Read and understand operator’s manual before using this machine.
Failure to follow operating instructions could result in death or serious injury.

WARNING! Read and understand all instructions. Failure to follow all instructions listed below may result in electric shock, fire and/or serious personal injury. Replacement manuals are available upon request at no charge, or may be downloaded from our website, www.drainbrain.com. Instructional videos are available for download on our website, and may be ordered. If you have any questions or problems, please call General’s customer service department at 412-771-6300.
SAVE THESE INSTRUCTIONS!
These instructions are intended to familiarize all personnel with the safe operation and maintenance procedures for the JM-3000.
SAFETY SYMBOLS
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
DANGER indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.
WARNING
WARNING indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a hazard with a low level of risk which, if not avoided, will result in minor or moderate injury.

WARNING
Serious injury or death may occur from inhaling engine exhaust or dangerous vapors. Use this product only in a well ventilated area. This water jet is designed for outdoor use only. Always make sure there is adequate ventilation (fresh outside air) for breathing and combustion.
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 of fumes.
Do not spray flammable liquids. Risk of explosion. Flammable liquids can create fumes which can ignite causing property damage or severe injury.
Do not direct discharge stream at peo- ple. This equipment can produce a high pressure stream of fluid that can pierce skin and its underlying tissues, leading to serious injury and possible amputation or death.
Always wear safety glasses and rubber soled, non-slip shoes. High pres- sure spray can cause paint chips or other particles to become airborne and fly at high speeds. Use of this safety equipment may prevent serious injury.
WARNING
This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

GENERAL SAFETY RULES

WARNING
Read and understand all instructions. Failure to follow all instructions listed below may result in electric shock, fire, and/orserious injury.
SAVE THESE INSTRUCTIONS!
WORK AREA SAFETY

1. All installations must comply with local codes. Contact your plumber, utility company or the selling distributor for specific details.
2. Risk of explosion. Do not spray flammable liquids or operate in an area where flammable or explosive materials are used or stored. Power tools create sparks which may ignite dust and fumes.
3. Keep bystanders, children, and visitors away while operating machine. Distractions can cause you to lose control.

PERSONAL SAFETY

1. High pressure developed by jet machines will cause personal injury. Water spray should not be pointed at any person. High pressure spray can result in serious injury. If fluid seems to have penetrated the skin, seek emergency medical attention at once.
2. Grip jet hose or spray wand securely with both hands before starting the machine. Failure to do so could result in injury from a whipping hose or wand.
3. Always wear eye protection and rubber gloves. Safety equip- ment, eye safety devices, non-skid safety shoes and protective clothing must be worn when using this equipment.
4. Do not touch engine during operation. The muffler and other parts of the engine get hot and can cause severe burns.
5. Do not smoke while filling engine fuel tank. Fumes can ignite causing property damage and severe injury.
6. Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating power tools may result in serious personal injury.
7. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving parts.

SERVICE

1. Tool service must only be performed by qualified service personnel. Service or maintenance performed by untrained personnel could result in injury and damage to the equipment.
2. When servicing tool, use only identical replacement parts. Follow instructions in maintenance section of this manual. Use of unauthorized parts or failure to follow maintenance instruc- tions may cause injury or damage to equipment.

JET SAFETY

1. Do not operate jet above rated pressure or above 140 degrees (rated water temperature). Operating jet above rate specifications risks damage to the pump and related components, and will void the warranty.
2. Do not operate jet with the output valve in the off position for extensive periods of time. This will cause the water to overheat and damage the pump.
3. Never run pump without water in it. Operating the machine without water will cause the pump to fail and void the warranty.
4. Check for worn hose and components before each use. Check that all fittings are secured before using jet. Worn or lose fittings can cause damage to the machine and injure the op- erator.
5. Protect machine and pump from freezing. Storing or operating the jet in temperatures below freezing can damage pump, hose and other jet components. Store unit indoors or protect with antifreeze when not in use.
6. General Wire Spring Co. will not be liable for any changes made to our standard machines or any components not purchased from General Wire Spring Co.

JM-3000 SPECIFICATIONS

BATTERY SPECIFICATIONS

• Lawn Tractor Battery
• 175 CCA
• Battery Box Size: 8 1/2” L x 6” W x 6 1/4” H (Battery can be slightly taller and still be covered by the lid.)
• Battery should have lifting strap for easy installation.

REMOVABLE HOSE REEL

This Jet features a removable hose reel. It easily detaches in seconds for remote operation. To remove reel, unscrew twist connect at the control panel outlet, then simply pull the knob at the base of the reel, and lift the reel. To reattach reel, align the base of the reel in the carriage, then allow the knob to snap back into place.
JET HOSE

1. When selecting hose size, consider that pressure is lost as the water travels down the length of the hose. As the length increases, the pressure decreases. In addition, the smaller the diameter of the hose, the greater the loss of pressure per foot will be. As an example, at 4 GPM, a 3/8” hose will lose 90 lbs. of pressure over a 100 ft. length. The gauge reflects pressure from the pump only, not pressure at the end of the hose. It is important to select the largest possible hose size in order to have as much pressure as possible at the end of the hose.
2. Hoses of the same diameter may be coupled together using the CC-1 coupling, but it is not recommended for use in lines smaller than 8” in diameter. The long length of the hose connectors and coupling together can get caught in bends in the line. It is not advisable to have two different hose sizes coupled in a drain line. There is a tremendous loss of pressure when combined, aside from the difficulty of getting around bends.

HOSE SELECTION GUIDE

*Hose Size (ID)| Pipe Size| Typical Applications| Available Hose Lengths**
---|---|---|---
3/8″| 4″ – 8″| Floor drains, septic lines, long runs| 100 ft., 200 ft.,
250 ft., 300 ft.
1/4″| 2″ – 4″| Kitchen sinks, laundry drains, clean outs| 100 ft., 150 ft.,
200 ft.
1/8″| 1-1/2″ – 2″| Small lines, bathroom sinks, tight bends| 30 ft., 50 ft., 75 ft.

* Inside Diameter
JET NOZZLES

1. A variety of jet nozzles are available for drain cleaning. Each has a different spray pattern and purpose. Some nozzles may have an orifice in the front to cut through the stoppage. All will have holes in the back to drive the hose down the line and clean the walls of the pipe. A tight spray pattern (15°) has more driving power for long runs, a wide spray pattern (40°) does a better job of cutting the grease off of the walls of the pipe. A combination of nozzles may be required to clear a line. Always turn off the machine and turn off output valve before changing nozzles.

2. Make sure the nozzle you are using matches the pump size. A 3000 psi pump requires a different nozzle orifice than a 1500 psi pump. Mismatching nozzles with pump size will either cause too little pressure, which may not clear the drain, or too much pres-
   sure, which may damage the machine.

3. Check nozzles before and after each use for clogged holes which can cause pressure to increase to dangerously high levels and damage the pump. A clogged hole can be cleared by simply using the NCT Nozzle Cleaning Tool.

4. Use the nozzle selection guide to determine what nozzle you will need for various applications. Examples: If a nozzle is stamped #52, it is a JN-52, drilled for 4 GPM @ 3000 PSI with several 15° rear jets and one forward cutting jet.

Powerful penetrating nozzle cuts through grease and ice.Wide spray flushing nozzle cleans inside of pipe thoroughly. ROTARY NOZZLES
Rotary nozzles are useful as a finishing tool. After the line has been cleared, you may switch to the rotary nozzle to more thoroughly clean the walls of the pipe. Use these nozzles only in a predominantly straight run since they are longer than regular nozzles and may get caught in tight bends. SPECIALTY NOZZLES
Spring leader nozzles and down head nozzles are special nozzles to help hose travel through the pipe when there are a lot of Tee’s, curves, and bends. CHAIN SAW NOZZLES
Chain saw nozzles spin at up to 10,000 rpm to rip through roots. Lengths of chain can be quickly and easily switched for different diameter pipes.

NOZZLE SELECTION GUIDE

JET ASSEMBLY

• Upon arrival, inspect the shipping crate for damages. Uncrate and examine all parts. Note any damage to machine or components for claims against freight carrier.
• Jet must be stored and operated in horizontal position. Never store in upright position or oil may leak from pump. If low, fill with SAE 30 weight non-detergent oil.
• Gas jets are shipped with oil in the engine. Consult motor manufacturer’s manual for correct weight and amount.
• Jet machines are meant to be used at or near the working area and under operator supervision. If machine must be located out of sight of operator, special controls may be required for proper ma- chine operation and operator safety

OPERATION

SET-UP

1. Locate the jet near the drain line on a level surface with drainage. Tip: Ideally, the drain line should be cleared from the downstream side, that is, from the street back toward the house. If you must clear the line from the drain toward the street, you may need  to use a siphon pump to clear away excess water.
2. Check the oil level in the pump. If low, fill with SAE 30 weight non- detergent oil.
3. Check the oil level in the engine. If low, fill with oil weight rec- ommended in the motor manufacturer’s manual.
4. Check the inlet filter to make sure it’s clean before each use. To clean, unscrew filter cap, remove the screen and rinse thoroughly with water. Then, replace screen.
5. Check that incoming water supply is clean and free of debris. Turn the water source on for at least 15 seconds to remove any possible debris in the water before connecting hose to water inlet.
6. Connect one end of a water supply hose (not included) to the water supply and the other end to the water inlet of the jet machine. Water supply must be a minimum of 20 psi and not to exceed 100 psi. Caution: Water temperature must not exceed 140 degrees or damage to the pump can occur. Use only heavy duty 3/4” hose of no more than 50 ft. in length. If run without an adequate water supply, the pump will cavitate. Cavitation causes the pump to vibrate, causing damage to the pump. Note: Lack of water supply can lead to seal damage, causing a loss of pres- sure and will void the warranty to the pump.
7. Maximum temperature from the water source should not exceed 140°F (60°C). Using water hotter than 140°F (60°C) can cause damage to the pump and void the warranty. If jet is being used to clear ice blockages, see instructions on Ice Blockages.
8. Select the proper hose diameter for the line to be cleaned. When using new hose, run water through it to clean it out before attaching the nozzle.

OPERATION
**** NEVER POINT THE END OF THE JET HOSE AT A PERSON WHILE OPERATING.

1. Select the correct jet hose size to match the line size you are clearing. (See Hose Section Guide) Check all hoses for wear and damage. Tighten all connections securely.
2. Select the correct nozzle and attach to the end of the hose. (See Nozzle Selection Guide) Note: If you are using a new jet hose, run water through it to flush out debris before connecting a nozzle.
3. Insert the jet hose 2 to 3 feet into the drain line before turning on machine.
4. Turn on the water supply valve fully to allow for maximum flow.
5. Turn on the jet output valve and allow water to run through the supply hose, jet, and jet hose to purge air from system before turning on the machine.
6. Make sure that the output valve is turned on and the water is flowing.
7. Start the engine using the Engine Start-up procedures listed below.

GAS ENGINE START-UP

1. Make sure that the ball valve is turned on and water is flowing.

2. Move choke lever to the closed position. Note: Do not use choke if engine is warm or ambient air temperature is high.

3. Move throttle lever to the midpoint position.

4. Turn the engine switch to the ON position.

5. Pull the starter grip lightly until resistance is felt, then pull briskly. If you have the electric start option, turn the key to start the engine.

6. As the engine warms up, gradually move the choke lever to the open position.

7. Position the throttle to the desired engine speed.
   OPERATION CONTINUED

8. Guide the jet hose into the drain line. Do not feed the hose contin- uously, but rather, move the hose forward and back to allow the pressure to break up the stoppage and the water flow to flush it away. If you are clearing the line from the upstream side, this may take more time. Clearing the line from the downstream side allows debris to flow away easily.

9. It is often helpful to turn on the Vibra-pulse valve. The vibration generated helps to hose overcome the friction in the line and glide farther down the line. See Vibra-pulse section.

10. When the jet hose encounters a bend in the line, its advance may slow or stop. The hose has a slight curve to it from the hose reel. It may be necessary to manually feed or rotate the jet hose to work it around the bends. If the hose won’t advance, put the hose in a loop and rotate it a quarter to half turn so the curve of the hose matches the pipe. It may also be necessary to pull the hose back six inches and snap it forward to hop across a gap in the pipe fitting.

11. Once you reach the stoppage, move the hose back and forth through the section several times to ensure the line is thoroughly cleared. You may also switch nozzles to a wide spray or rotary (optional) nozzle for wall to wall cleaning action.

VIBRA-PULSE®
Pulsation makes the hose vibrate, helping the jet go longer distances and around tight bends easier. The pulse control valve is located on the front of the pump. Simply turn the valve on to engage the pulse. Vibra-pulse is most effective in a 1/8” hose. You’ll notice less vibration with a 1/4” hose, and almost none with a 3/8” hose. However, the pulse is still effective, causing the water to burst from the nozzle hundreds of times per second. If you are still having difficulty getting hose around a tight bend, switch to a smaller diameter hose. Turn the pulse off before turning machine off.

SPECIAL APPLICATIONS

ICE BLOCKAGES
High pressure water can be used to clear an ice blockage. A 3000 psi gas jet can clear a 4” line at an approximate rate of one foot per minute. The smaller, electric jet will take twice as long. Ambient air temperature will effect these times. Use a 15° nozzle with a forward jet. DO NOT allow the incoming water supply to exceed 140°F (60°C) or it could cause damage to the pump. Remember to follow the cold weather precautions found in the Freeze Protection section.
FREEZE PROTECTION
To protect your machine from severe damage caused by water freezing inside the components, it is important to winterize it whenever it is subjected to freezing temperatures. The best way to protect the system is to keep it out of the cold. Barring that, the next best way is to flush the system with anti- freeze. To do so, simply attach a short garden hose (not to exceed four feet) to inlet on the pump and put other end into the anti-freeze container. Be sure to remove the nozzle from the hose. Turn the machine on to draw anti-freeze into the system. When anti-freeze flows out of the end of the hose, turn the machine off. Connect high pressure hose and trigger, and follow above procedure. Cycle trigger on/off so that the anti-freeze will flow into unloader and injector section of  machine.
When preparing to operate equipment for the next job, remove the anti-freeze. To do so, reconnect water source, turn pump on and direct flow of anti-freeze back into container. Be careful not to dilute anti-freeze with incoming water supply. Anti-freeze, if kept relatively undiluted, can be used again and again.
Hoses can also be protected from freezing by using compressed air to clear them of residual water. Remember to remove nozzle from jet hose and hold trigger of spray wand in open position.

ADJUSTING PRESSURE UNLOADER

The machine is equipped with a regulating pressure unloader to prevent pressure overload in the event that the nozzle is clogged or the output valve or spray wand trigger is off. When the machine is in the bypass mode, the pump will continue to run. However, running in bypass mode for extended periods will cause damage to the pump – no more than 5 minutes. Excessive temperatures will damage the pump and void the warranty.
The machine also comes with thermal overload protection. When water temperature in the pump increases to 140°F (60°C), the thermal relief valve will release hot water and allow cool water to enter pump from the fresh water supply.
To adjust the unloader, loosen the lock nut and turn the knob counter- clockwise to decrease pressure and clockwise to increase pressure.
Caution: Do not over-tighten unloader. Tighten lock nut after adjustments are made.

ACCESSORIES

HANDY-REEL WITH FOOT PEDAL – Cat # HM-200-W (OPTIONAL)
The Handy-Reel allows for remove application of the jet. The jet can be positioned at ground level, while the Handy-Reel can be carried up on a roof to clear vents and stacks. With the help of the Handy-Reel, gas jets can be used for indoor applications while the machine operates safely outside. The Foot Pedal interrupts the flow of water between the pump and the nozzle while leaving both hands free to guide the hose. Position the Handy-Reel at the drain site. Connect the jet machine to the inlet on the Foot Pedal. Select and attach nozzle to the hose on the reel. Put the hose 2 to 3 ft. into the drain line. Follow the start-up procedures. FOOT PEDAL ONLY – Cat # FM-1 (OPTIONAL)
The Foot Pedal can be used with any jet manufactured by General. It interrupts the flow of water between the pump and the nozzle while leaving both hands free to guide the hose. The pump will continue to run in by-pass mode. Do not leave pump in by-pass for more than a few minutes or the pump can be damaged. (See Pressure Unloader) The Foot Pedal may be connected either at the machine or remotely at the drain site. To use the foot pedal at the machine, remove the hose going to the swivel on the hose reel and attach it to the inlet side of the Foot Pedal. Then, connect the accessory hose (available in 6 ft., 25 ft., or 50 ft. lengths) between the outlet of the pedal and the swivel on the hose reel. Some jet models may need the added length of the accessory hose on the inlet side of the pedal.
For remote operation, pull the hose from the hose reel to the drain site. Attach the hose to the inlet of the pedal. The pedal is designed for 3/8” hose fittings. If using a 1/4” hose, use the AD-1 adapter, as well. Then, attach the smaller hose (1/8” or 1/4”) to the outlet side of the pedal. Use the smaller hose to clear the drain line.
SPRAY WAND – Cat # SWA-3000 ** USE CAUTION WHEN PRESSURE WASHING. WEAR GOGGLES AND RUBBER GLOVES AND BOOTS. ANALYZE ANGLE OF SPRAY AND ANTICIPATE ANGLE OF BACK SPLASH. DO NOT POINT SPRAY AT ANYONE, INCLUDING YOURSELF. DO NOT PUT YOUR HAND IN FRONT OF WATER SPRAY. IT CAN PENETRATE THE SKIN AND CAUSE A NEED FOR AMPUTATION. IT IS BEST TO START AT A 45° ANGLE AT A 7 TO 10 FT. (2 TO 3M) DISTANCE FROM OBJECT TO BE CLEANED. DIRECT SPRAY AT CLOSE RANGE CAN BE POWERFUL ENOUGH TO CAUSE DAMAGE.
The Spray Wand can be used to clean your truck or other applications. Caution: Never clean the machine with its own spray. Follow the same procedures listed previously for safety, set-up, operation, and maintenance. To operate the spray wand with your water jet, disconnect to twist connect at the output valve. Then, connect the spray wand hose, trigger and wand at the output valve. Turn on the water supply, then squeeze the trigger to purge air from the system. Continue to squeeze trigger as you turn on the machine.
Hold the high pressure spray nozzle approximately 6 – 8 ft. from the surface to be cleaned. When cleaning with a detergent, apply from bottom up with an even left to right movement. Rinse from top down with a similar motion. This will help reduce potential streaking. Always apply soap to a dry surface. This will enhance penetration and detergent cling and reduce dilution of detergent with an already wet sur- face.
You may draw soap through the spray wand in conjunction with the optional chemical injector. First set up the Chemical injector system (see Chemical Injector). Then, simply turn the nozzle barrel on the end of the wand counter- clockwise. As the spray pattern widens, more of the detergent will be drawn through the wand. Turn the nozzle clockwise to reduce the detergent flow and narrow the water spray pattern to return to high pressure.
CHEMICAL INJECTOR – Cat # CMA-1**
To use the chemical injector, disconnect the Twist Connect at the output valve on the jet. Then thread the Chemical Injector on to it. The Spray Wand then threads onto the free end of the Chemical Injector. Do not attach Chemical Injector to the inlet side of the pump. Detergents can damage pump. To use the detergent injector, attach one end of the siphon hose to the barbed fitting on the injector and put the filter end into the detergent solution. Be sure the end of the hose is at the bottom of the container or bucket. Some models have adjustable valves to control the amount of detergent drawn through the hose.

MAINTENANCE

Regular inspection is the key to preventing breakdowns and prolonging the life of the equipment. Follow this simple procedure religiously.
DAILY

• Check INLET FILTER for debris before each use.
• Check that the PUMP OIL LEVEL is within operating range on dipstick or sight glass.
• Check that the jet nozzles are not clogged or worn out.

WEEKLY

• Check the pressure hose for wear and damage. Damaged hose can be repaired at a local service dealer of by your equipment dealer.

Pump Crankcase Oil Change: Service after the 1st month, or after 20 hours. Then service every year or 500 hours. Use SAE 30W Non- Detergent Motor Oil to full mark on dipstick or to dot on sight glass.
Engine Maintenance: Check engine manual for specific maintenance procedures.

TROUBLE SHOOTING GUIDE

nozzle. Check nozzle size.
Clogged water inlet strainer.| Clean or replace strainers.
Inadequate water supply.| Make certain water supply valve is on fully. Make certain water supply hose is at least 3/4” in diameter, in good condition, with no kinks or damage, and is not longer than 50 ft.
Worn or damaged piston cups.| Replace piston cups.
Worn or damaged inlet or discharge valve.| Replace worn valve poppets or valve springs.
Dirt or foreign particles in valve assembly.| Remove any dirt particles.
Air leak in inlet plumbing.| Locate air leak. Re-seal connection or replace damaged port.
Rough operation with loss of
pressure.| Restricted inlet plumbing or air leak in inlet plumbing.| Repair clogged inlet fittings. Check supply hose and ensure adequate water supply.
Damaged piston, cup or pump valve.| Replace any damaged pump parts and clean out any foreign particles.
Clogged nozzle.| Clean or replace nozzle.
Water leakage at intake manifold or crankcase.| Worn manifold seals, piston or o-rings, or condensation inside crankcase.| Replace seals, sleeves or o-rings. Change oil at regular intervals.
Inadequate water supply to pump, creating a vacuum lock.| Ensure adequate tap water supply. Clear inlet filter.
Oil leaks.| Worn pistons and/or leaking crank seals, crankcase cover seal, or drain plugs.| Replace seals, sleeves or o-rings.
Excessive wear.| Worn or loose bearings.| Replace bearings. Check bearing seals, spacers and retainers.
Replace any worn parts.
Short piston cup life.| Scored cylinders from pumping acids.| Replace cylinders. Do no pump acid solutions. For acid application, ask your dealer
for a pump saver injector.
Abrasive particles in fluid being pumped.| Replace water and detergent strainers if damaged or missing.
Install additional filter if fine abrasives are still evident.
Operator(s) running pump without water supply.| Do no allow washer to be run without proper water supply.
Hot water in pump.| Do not run in bypass for more than 5 minutes. Do not let water supply exceed 140°F (60°C).
Irregular spray pattern.| Worn or partially clogged nozzle.| Clean or replace nozzle.
Washer fails to draw detergent.| Detergent metering valve closed, orvalve clogged or defective.| Open detergent metering valve, following procedure in operating instructions.
Back pressure in hose (when using additional lengths of pressure hose).| Contact dealer for proper injector size when adding lengths of hose.
Back pressure in pressure hose (when using dual lance wand).| Use proper size flood nozzle in dual lance wand (refer to parts breakdown).
Suction tube not below liquid surface.| Completely submerge suction tube and strainer in detergent solution.
Clogged or damaged suction strainer.| Clean or replace strainer.
Detergent solution too weak.| Clogged detergent strainer.| Clean or replace strainer.
Air leak in detergent suction tube or inlet plumbing.| Find air leak and clean or replace parts as necessary.
Detergent solution too concentrated.| Original detergent too concentrated.| Dilute product as necessary to achieve proper concentration.
Detergent in rinse cycle.| Dual lance wand or adjustable nozzle holder in open position or chemical metering valve open.| Close dual lance wand adjustable lance holder to achieve high pressure. Close detergent metering valve.
Worn or defective internal check valve.| Repair or replace check valve or injector parts as necessary.
Dilution of detergent concentrate
during cycle.| Defective check valve in detergent tank.| Replace parts as necessary.
Unloader cycles.| Fitting leaking downstream.| Tighten/replace fitting.
Piston or valve spring broken or worn.| Replace parts as necessary.
Clogged nozzle.| Clean or replace nozzle.
Fluid leaking from body.| O-ring worn or cut.| Replace part as necessary.
Unloader will not come to pressure.| Foreign particle in valve.| Clean or replace valve.
Nozzle worn or wrong size.| Replace part as necessary.
Piston or valve worn.| Replace part as necessary.
Extreme pressure spikes.| Adjusting nut turned completely into unloader.| Back off adjusting nut.
Clogged nozzle.| Clean or replace nozzle.

See pages 10 & 11 for Parts List and Schematic Diagram.
JM-3000 PARTS LIST

JM-3000 PUMP/GEARBOX PARTS LIST

JM-3000 PUMP PARTS LIST
(Drawing on next page)

ITEM| DESCRIPTION| PART #| QTY| ITEM| DESCRIPTION| PART #| QTY
---|---|---|---|---|---|---|---
1| VALVE PLUG| JM46-0889| 6| 28| RETAINING RING| JM46-0103| 6
2| O-RING| JM25-0012| 6| 29| CONNECTING ROD PIN| JM43-0032| 3
3| VALVE ASSEMBLY (INC. 11-15) (SEE 70-0009)| N/A SEP.| 6| 30| OIL LEVEL INDICATOR| JM46-0114| 1
4| MANIFOLD| JM46-0890| 1| 31| PLUG| JM39-0017| 1
5| FLATWASHER| JM28-1039| 8| 32| O-RING| JM25-0014| 4
6| BOLT| JM27-8185| 8| 33| BOLT| JM27-8404| 5
7| WASHER| JM28-1038| 2| 34| CRANKCASE OPEN COVER| JM46-0295| 1
8| PLUG| JM39-0019| 2| 35| O-RING COVER| JM25-0339| 1
9| WASHER| JM28-1002| 2| 36| BOLT| JM27-8435| 6
10| PLUG| JM39-0018| 2| 37| LOCKWASHER| JM29-0154| 6
11| HEAD RING| JM70-0030| 3| 38| CONNECTING ROD| JM46-0051| 3
12| V-PACKING| JM26-0098| 3| 39| PISTON ROD| JM46-0056| 3
13| O-RING| JM25-0207| 3| 40| WASHER| JM46-0146| 3
14| INTERMEDIATE SEAL RETAINER| JM46-0659| 3| 41| PLUNGER| JM46-0052| 3
15| LOW PRESSURE SEAL| N/A SEP.| 3| 42| BACK-UP RING| JM46-0109| 3
16| LOW PRESSURE SEAL RETAINER| JM46-0057| 3| 43| GASKET| JM28-0400| 3
17| O-RING| JM25-0015| 3| 44| BOLT| JM46-0069| 3
18| OIL SEAL| JM26-0047| 3| 45| CRANKCASE| JM46-0047| 1
19| BUSHING| JM9-0029| 3| 46| OIL DIP STICK| JM46-0144| 1
20| BOLT| JM27-8431| 8| 47| CRANKCASE COVER| JM46-0336| 1
21| CRANKCASE COVER| JM46-0296| 1| –| VALVE ASSEMBLY (6 EACH 3)| JM70-0009| –
22| SHIM| JM46-0113| 1| –| HEAD RING KIT (3 EACH 11)| JM70-0030| –
23| OIL SEAL| JM26-0049| 1| –| V-PACKING KIT (3 EACH 12, 13, 15)| JM70-0147| –
24| O-RING| JM25-0013| 2| –| INTERMEDIATE RETAINER KIT (3 EACH 13, 14)| JM70-0148| –
25| BEARING| JM48-0012| 2| –| LOW PRESSURE SEAL KIT (3 EACH 15, 16, 17)| JM70-0298| –
26| KEY| JM43-0048| 1| –| V-PACKING ASSEMBLY (3 EACH INC. 11-17)| JM70-0300| –
27| CRANKSHAFT (PUMP 3-0203)| JM46-0888| 1|

JM-3000 GEARBOX PARTS LIST

ITEM| DESCRIPTION| PART #| QTY| ITEM| DESCRIPTION| PART #| QTY
---|---|---|---|---|---|---|---
1| O-RING| JM25-0158| 1| 14| SPACER| JM46-1474| 4
2| PUMP FLANGE| JM46-1472| 1| 15| WASHER| JM28-0139| 4
3| SEALING WASHER| JM28-0137| 4| 16| LOCKWASHER| JM29-0155| 4
4| SCREW| JM27-8434| 4| 17| SCREW| JM27-0119| 4
5| O-RING| JM25-0650| 1| 18| OIL PLUG VENTED| JM46-1475| 1
6| SET SCREW| JM27-9606| 1| 19| OIL PLUG NON-VENTED| JM46-1476| 1
7| RING GEAR| JM47-0036| 1| 20| PINION GEAR| JM47-0038| 1
8| OIL SIGHT GLASS| JM46-1473| 1| 21| BALL-BEARING| JM48-0092| 1
9| LOCKWASHER| JM29-0154| 4| 22| SNAP RING| JM46-1477| 1
10| SCREW| JM27-8433| 4| 23| SEAL RING| JM26-0380| 1
11| PLUG| JM39-0205| 1| 24| SNAP RING| JM46-1478| 1
12| WASHER| JM28-0138| 1| 31| OIL DIPSTICK| JM46-1479| 1
13| GEARBOX CASE| JM47-0037| 1|

JM-3000 HOSE REEL PARTS LIST

ITEM| DESCRIPTION| PART #| QTY| | ITEM| DESCRIPTION| PART #| QTY
---|---|---|---|---|---|---|---|---
1| LOCKNUT| JM30-0157| 8| | 9| WASHER| JM28-0002| 4
2| WASHER| JM28-0003| 12| 10| LOCKNUT| JM30-0155| 4
3| 3/8″ SWIVEL| JM24-0362| 1| 11| HOSE REEL STAND| JM20-1221A01| 1
4| HOSE| JM15-0311| 1| 12| BOLT| JM27-0066| 4
5| ELBOW| JM24-0105| 1| 13| HOSE REEL| JM50-0221| 1
6| SCREW COUPLER| JM23-0490| 1| 14| CARRIAGE BOLT| JM31-0046| 4
7| BOLT| JM27-0016| 4| 15| HOSE REEL HANDLE| JM7-0273A18| 1
8| ISOLATOR| JM14-0069| 4|
DATE
08/05/2015
01/29/2019
04/02/2020| SERIAL # BREAK
28003283
28006259| REASON FOR CHANGE
Unloader change, Ball Valve Change
Changed Hose Reel
Strainer and detergent hose combined into 19-0233
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General Wire Spring Co.
1101 Thompson Avenue
McKees Rocks, PA 15136
412-771-6300
www.drainbrain.com
© General Wire Spring Co. 2023
C-JM-30000I-05012023

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