/ Instruction Manual
5 HP Briggs Gas Power Unit

L1917 Rev. A 10/94

IMPORTANT RECEIVING INSTRUCTIONS

Visually inspect all components for shipping damage. Please contact Hurst Emergency

Products if damage has occurred.

INSIDE THIS INSTRUCTION SHEET

®

Specifications...... 1 Installation...... 3 Maintenance ...... 6

Safety Information ...... 2 Operation...... 5 Troubleshooting...... 7

Refer to Briggs Model 126702 Owner’s Manual for engine information.

SPECIFICATIONS

Specification / JL-4GBS-DV / JL-4GBS-SV
Operating Pressure / 350 bar (5,000 psi) maximum
Valve Type / Dump / Selector
Gas Engine / Briggs Model 126702 3,7kW (5HP), 4 cycle
See Briggs Model 126702 owners manual supplied with this power unit
Sound Level / 80 dBA at 1 m (3 ft) at no load
Flow Rate / 5,4 l/min (330 in3/ min) at 0 bar (0 psi)
2,0 l/min (120 in3/ min) at 350 bar (5,000 psi)
Unloading Pressure / 140 bar (2,000 psi)
Temperature / Ambient TemperatureRange: -20C to 40c (-4F to 104F)
Operating Fluid Temperature: 65,5C (150F) maximum
Reservoir Capacity / 4 l (1 gal.)
Shipping Weight (with fluid) / 35 kg (77 lbs)
Recommended Hydraulic Fluid / Jaws of Life® Fire Resistant Phosphate Ester Fluid

SAFETY INFORMATION

Hurst Jaws of Life® products are designed and manufactured to provide excellent

service when used for their intended purpose. Operator safety is a major consideration

in the product design and operator manuals are provided to promote their safe use.

Additionally, operator training programs are offered by authorized distributors and Hurst

Emergency Products. The company urges all users to read the Instruction Manual and

to seek operating instructions from qualified instructors before attempting to use the

products.

Although most safety precautions are addressed in factory authorized training programs

as well as throughout this manual, pay particular attention to the following:

–Power units and tools should be operated by qualified personnel only.

–Be sure to follow all maintenance procedures and to use only factory authorizedservice parts.

–Return your warranty registration card.

– These pumps have factory-adjusted internal relief valves which must not be

repaired or adjusted except by factory trained service personnel.

– Do not use gasoline power pumps in an explosive atmosphere.

– Operate and refuel the pump in well ventilated areas only. Avoid inhaling

exhaust gases.

– Inspect equipment for broken or missing parts, or damaged hoses before and

after use.

– Keep clear of all moving parts.

– Always use cribbing to shore and stabilize objects being lifted.

– Wear proper protective gear; including bunker gear, gloves, helmets, face

shields, etc. Ear protection should be worn when operating gasoline or

diesel power units.

– Check hydraulic fluid level before operating pump. Add fluid when necessary.

– Use only Jaws of Life® fire resistant hydraulic fluid. Do not substitute other

brands because characteristics may differ. Brake or automatic transmission

fluid will not work in the Jaws of Life system and will damage the equipment.

– Jaws of Life® fire resistant fluid is a custom blended phosphate ester fluid.

In case of contact with the skin, wash off with soap and water. In case of eye

contact, flush generously with water. If discomfort persists, see a physician.

DO NOT OPERATE EQUIPMENT WHEN TIRED. STAY ALERT.

INSTALLATION

Install Fluid Level Gauge

For shipping purposes, a plug is installed in the fill port on the top of the reservoir. See

illustration below.

1. Remove shipping plug.

2. Install the fluid level gauge that was shipped with the power unit.

Check Fluid Level

Check the fluid level prior to start-up. The fluid level should be above the 2 band on the

gauge as pictured below. Add hydraulic fluid, if necessary. To add fluid, remove the

fluid level gauge and pour fluid through the opening in the top of the reservoir.

IMPORTANT: Add fluid only when all system components are in the fully retracted

position. If fluid is added when plungers are advanced, there will be more fluid in the

system than the pump can hold.

... continued

INSTALLATION (continued)

Install Hydraulic Hoses and Rescue Tools

The valves operate independently, and their connections are made separately. Follow

the steps below to connect each tool to a single valve on the power unit.

To make hydraulic connections:

1. Remove nylon caps from spring guard hoses.

2. Match color codes on hose and flare fitting (A), and connect hand tight.

3. Tighten connections using 5/8" open end wrench.

Overtightening may damage connections.

4. Connect hydraulic hoses to spring guard hoses on power unit.

OPERATION

  1. Check all system fittings and connections to be sure they are tight and leak free.
  1. Check gasoline engine gas and oil levels. See Briggs Model126702 Owner’s forrecommended fluids.
  1. Before starting the gasoline engine, be sure that the control valve is in the neutral or dump position to prevent accidental movement of tool. See diagram below for valve positions.

Control valve handle positions are shown below.

NOTE: When the pump is new or after fluid has been changed, it may be necessary to

prime the pump. To do this, pull the engine starter grip slowly a few times to get the

engine to turn, but not start. This slow rotation should pull fluid up into the pump

pistons.

  1. Start the gasoline engine using procedure in Briggs model 126702 Owner’s Manual.
  1. Use the manual valve to control the direction of the fluid flow.

NOTE: When the hydraulic system is connected for the first time, air will be

trapped in the components. To ensure smooth operation, purge air from the system

by opening and closing the rescue tool several times.

To ensure proper operation, avoid kinking or tightly bending hoses. If a hosebecomes kinked or otherwise damaged, it must be replaced. Damaged hosesmay rupture at high pressure causing personal injury.

MAINTENANCE

Change Fluid

IMPORTANT: Observe local ordinances when disposing of used fluid. Do not mix

phosphate ester fluid with engine oil or other hydraulic fluids if you are planning to have

these fluids recycled.

Completely drain the reservoir after every 100 hours of operation. Refill with new

hydraulic fluid. If pump is used infrequently, change the fluid once a year.

Procedure: (refer to illustration above)

1. Position drain plug above a pan to catch the used fluid.

2. Remove the drain plug (B).

3. Tilt the pump to allow fluid to drain completely out of reservoir.

4. Reinstall drain plug (B).

5. Fill the reservoir through the fluid level gauge opening (C)with new hydraulic fluid

(See page 1 for recommended fluid specification.). It may be necessary to prime thepump after filling. See OPERATION on page 5 for priming instructions.

Check Engine Operation

See the Briggs model 126702 Owner’s Manual that was supplied with your pump. Follow the

Maintenance Schedule to keep the engine in operating condition.

Check Pump Operation

Operate the pump and observe its performance. Refer to TROUBLESHOOTING on page 7

to isolate problems. If the pump fails to perform as it should, the seals may need to be

replaced. The life of the pump seals will depend upon the pump usage, cleanliness, and

environmental conditions.

For repair service, contact your dealer or factory trained service personnel.

TROUBLESHOOTING

A system failure may or may not be the result of a pump malfunction. To determine the

cause of the problem, the complete system must be included in any diagnostic

procedure. The following information is intended to be used as an aid in determining if

a problem exists. Refer to the Briggs model 126702 Owner’s Manual for engine information.

Only factory trained service personnel should service the power unit or system

components. For repair service, contact your dealer or factory trained service personnel.

Symptom / Possible Cause / Solution
Pump fails to build
pressure. / Pump not primed. / Pull the engine starter grip slowly a few times to get the engine to turn, but not start. This slow rotation should pull oil into the pump pistons.
External leak in system / Trace circuit checking all connections and components
Internal leak in pump or valve. / Contact your dealer or factory trained service personnel..
Internal leak in system component. / Repair or replace leaking system component.
Rescue tool will not
open or close. / Valve not in the pressure position. / Shift valve lever firmly into pressure position.
Flow to tool blocked by loose coupler connection. / Release pressure and turn off unit. Check that all couplers are completely connected and hand tightened.
Fluid level too low. / Fill reservoir to proper level.
Pump filter screens clogged. / Remove the reservoir from the pump and clean or replace the filter screens.
Pump or valve failure. / Contact your dealer or factory trained service personnel.
Rescue tool opens
and closes erratically. / Air in fluid. / Tighten all hydraulic connections. Fill the
reservoir to the proper level. Open and close the rescue tool several times to purge the system.
External hydraulic leak. / Replace any damaged valves, hose, or fittings. Tighten leaky connections. Purge air from the system by opening and closing the rescue tool several times.
Relief valve failure. / Contact your dealer or factory trained service personnel.
Pump worn or damaged.
Sequencing valve failure.

Hurst Emergency Products reserves the right to make changes at any time, without notice or obligation, in prices,materials, equipment or specifications and to change or discontinue models. Check with distributor for currentinformation.

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