Isuzu Trooper - Isuzu Trooper
1. Maintenance instruction
2. Maintenance
3. Engines
4. System of decrease in toxicity
5. Fuel system
6. Transmission and running gear
7. Suspension bracket and steering
8. Brake system
9. Body
10. Body electric equipment
   10.1. System of heating and air conditioning
   10.2. Receiver
   10.3. Electric motor of a screen wiper of a windshield, draft of the drive of brushes
   10.4. Electric motor of a screen wiper of back glass
   10.5. Devices and switches
   10.6. Cruise control
   10.7. Unblocking device
   10.8. Devices of protection against overloads
      10.8.1. Safety locks
      10.8.2. Fusible crossing points of wires (insert)
      10.8.3. Automatic switches of loading
      10.8.4. Flashing signaling devices
11. Diagnostics of malfunctions
12. Electrical circuitries





Isuzu Trooper>> Body electric equipment>> Devices of protection against overloads>> Fusible crossing points of wires (insert)

10.8.2. Fusible crossing points of wires (insert)

GENERAL INFORMATION

Fusible crossing point on the Trooper/Bighorn cars

1 – serviceable

2 – fused

Fusible crossing points are used for protection of wires. Crossing points join consistently in such chain which wires at normal loading cannot obviously be melted off (for example, in an ignition chain). The fusible crossing points installed on cars have distinctive color marking, and color of a crossing point has to correspond to a color code of that chain which the crossing point protects. Diameter of each crossing point is four times less than diameter of a wire, consistently to which the crossing point is connected. Diameter is printed on isolation of a crossing point. In conducting of the engine 7 fusible crossing points are provided. When replacing the crossing point with special gipalonovy isolation and with a diameter equal to diameter of the replaced crossing point has to be established.

Merging of a new fusible crossing point with a wire

1 – to a terminal block

2 – the site of a crossing point entering a connector

3 – a fusible crossing point before short circuit

4 – to cut off here

5 – a fusible crossing point after short circuit

7 – fusible crossing point

8 – connector of wires

9 – carefully insulate the bared sites

10 – the pressed-out and propayanny connection

Replacement

PERFORMANCE ORDER
1. Define a faulty chain and the reason which caused burn-out of a fusible crossing point. If the fused crossing point is one of three which wires with diameters of the NN 10 or 12 groups approach, then it is possible to define the concrete damaged chain.
2. Disconnect the battery from weight.
3. Cut out the damaged crossing point from a plait. If the damaged crossing point belongs to three chains fed by one wire, then cut off a crossing point from a wire of each of chains.
4. Prepare a fusible crossing point which on rating data corresponds fused, and a connector for connection of wires end-to-end.
5. A replacement procedure of a fusible crossing point in group of 3 crossing points fed by one wire:
5.1. Cut off the remains of fusible crossing points near the place of the soldering (or weldings) with a wire.
5.2. Remove isolation from two new crossing points, approximately on 13 mm since each end. Insert two ends of a wire into a connector on the one hand, and on the other side of a connector insert a fusible crossing point. Press out connector pads on both parties.

Prevention

At installation of three fusible crossing points be careful as three wires will enter a connector with a tightness. It is recommended to press out a connector the special tool as when sinking a bokorezama or flat-nose pliers connection will be unreliable.


5.3. After sinking of a connector with three fusible crossing points cut off a part of the feeding wire with the site of welding (soldering) and remove isolation on 13 mm from the end of a wire. Insert the processed site of a wire into a connector and with big effort press out.
5.4. Attach other end of a new fusible crossing point for what remove isolation on 13 mm from the end of a wire of that chain from which the fused crossing point was taken, insert into a connector and with big effort press out. Then insert a new fusible crossing point on the other side of a connector and press out.
5.5. Propayayte the spliced connections by solder with a gloss oil core (the recommended composition of solder of 60% of tin and 40% of lead). Insulate an insulating tape.
6. If it is necessary to replace one fusible crossing point protecting the only chain, then remove sites of wires from the crossing point remains, remove isolation on length of 13 mm from edges of wires, insert and press out a connector, places of a joint to a propayayta and insulate.
7. A replacement procedure of the fused fusible crossing point with the flat cap plug (for example in a battery charge chain):
7.1. Cut off a joint with the fused crossing point.
7.2. Remove isolation on length of 13 mm from the end of a wire.
7.3. Splice a new crossing point with a wire through a connector, a propayayta and insulate a junction.
8. Connect the battery to weight, check work of a chain.

Prevention

Do not mix a fusible crossing point with a resistive wire. This wire is slightly longer, on it there is an inscription "Resistor-don't cut".


9. If crossing points with diameters of NN of 16, 17, 18 and 20 join a wire of big diameter, then it is necessary to untwine a wire reliably to fix it in a connector.