JCB 3CX 4CX Loader Machine Regulator Valve Adjustment Guide

This instruction show you guide on how to  adjust regulator valve for JCB 3CX 4CX loader machine.

If a new regulator valve is fitted, or a valve stripped,cleaned and rebuilt, then the pressure spool should bebacked off to a low pressure. This will prevent inadvertent damage to the pump.

 

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How to Solve JCB 140 205 Excavator Fuel Level Low Alarm C101D?

How to Solve C101D-68- Fuel Level Low Alarm.(For JS140 Side mounted Sensor) .

 

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Possible Cause: 
1. Fuel Level is low in the fuel tank.
2. Fuel sensor not connected to machine revolver harness.
3. Faulty fuel sensor.
 

Diagnosis: 
1. Check the fuel level in fuel tank.
2. Check fuel senor connection with machine revolver harness.
3. Check the resistance output of fuel sensor between machine grounds & Pin no “B” of fuel sensor. 

Fuel sensor.
output shall be between 12Ω - 100Ω Refer below photograph for fuel sensor connection. 

Corrective Action:-
1. Refill the fuel in the tank
2. Connect properly fuel sensor with revolver wire harness.
3. Replace the fuel sensor.

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JCB 3CX,4CX,214,215,217 Stabiliser Controls Removal and Replacement Guide

This instruction show you guide on how to remove and replace stabiliser controls for JCB 3CX,4CX,214,215,217. 

 

Stabiliser Controls
The stabiliser controls A and associated cables are housed in the R.H. side console as shown.
There are two control cables which operate the R.H. and L.H. stabiliser control valves on the excavator valve block.

Note the routing of the existing cables and route the new cable(s) in the same way.

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How to Solve JCB 140 Excavator Swing Lock Solenoid Short Circuit

How to Solve JCB 140 Excavator Swing Lock Solenoid Short Circuit


C0391-11:Swing lock solenoid short circuit to Ground. Possible

 

Preparations:
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Cause:

1. MECU high side Output & Low side Output short circuited in wire harness.

2. MECU High Output wire connected to machine ground.

3. Faulty Solenoid. 



Diagnosis:

1. Check the connectivity between circuit no 8049 & 4049 through by help of multimeter after disconnecting the swing lock solenoid. Refer below photograph.

2. Check the connectivity between circuit no 8049 & machine earth by help of multimeter when swing lock solenoid disconnected from wire harness. Refer below photograph.

3. Check the solenoid coil circuit resistance. The resistance of solenoid coil shall be 37Ω. Corrective Action:- 1. Replace the faulty wire harness. 2. Replace faulty solenoid coil.

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How to Solve P0276-64 No Alternator pulses for JCB JS140

This instruction show you guide on how to solve P0276-64 No Alternator pulses for JCB JS140 extractor

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Possible Cause:
1. Alternator W terminal not connected to machine wire harness.
2. Faulty Alternator.
3. Faulty wire harness.


Diagnosis:
1. Check the connection between wire harness & alternator “W” Terminal. Wire harness shall be connected on the alternator connector as shown in below Photograph.

2.Check the alternator frequency on the “W” terminal by help of multimeter. Alternator frequency can be measure on the “W” terminal of alternator as shown in below photograph.

3. Check the Alternator frequency on the circuit no 4221 connected on pin no 34 Of MECU wire harness connector with help of multimeter after disconnecting MECU wire harness connector. Refer below photograph.


Corrective Action:
1. Connect the wire harness with the alternator properly.
2. Replace faulty alternator.
3. Replace Faulty Wire harness.

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How to Remove and Replace Cab Heater Controls for JCB 3CX

The cab heater controls A and associated cables are housed in the R.H. side console as shown.There are two control cables which operate the re-circulation vent and the hot water valve. Both the cables can be accessed by removing the side console instrument panel.

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Removal
1 Park the machine on firm level ground, apply the parking brake. Lower the loader arms and excavator to the ground, switch OFF the engine and remove the starter key.
2 Remove the fixing B at the top of the instrument panel and carefully lift the panel forward to reveal the connections at the back.
3 Disconnect the temperature control cable C by releasing the cable outer sheath from the clips R at each end, and unhooking the cable from the water valve lever S and from the pin T at the control knob.4 Disconnect the re-circulation vent cable D by releasing the cable outer sheath from the clips X at each end, and unhooking the cable from the vent Y and from the pin Z at the control knob.

How to Remove and Install JCB 520 Excavator Blower Unit

The blower W is located inside the HVAC/air conditioning unit and can be removed without having to remove the HVACunit from the machine

The only user-serviceable part is the resistor which determines the blower motor speed. Other faults, excluding wiring faults, necessitate the replacement of the blower unit complete.

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Resistor replacement requires the removal of the blower unit as follows:

Removal Disconnect the battery.

Gain access to the HVAC unit by removing the right hand side console and remove the HVAC unit top cover,refer to HVAC/ Air Conditioning Unit - Removal and Replacement Steps 2 and 3.
3
Disconnect the electrical connections to the blower.
4
Remove the screws securing the blower unit to the HVAC unit housing.
5
Carefully withdraw the blower from the HVAC unit.
6
To remove the resistor, disconnect the electrical connections and unscrew the resistor. Replacement is the reverse of the removal procedure

Freeze Protection Thermostat
- Removal and Replacement
The Thermostat V monitors the external temperature of the evaporator and is located inside the HVAC/air conditionig unit.
Removal
1
Disconnect the battery.
2
Gain access to the HVAC unit by removing the right hand side console and remove the HVAC unit top cover, refer to HVAC/ Air Conditioning Unit - Removal andReplacement Steps 2 and 3.
3
Unclip the sensor wire from the evaporator and gently remove the wire from between the fins.
4
Disconnect the electrical connections to the thermostat.
5
Remove the screws securing the thermostat to the HVAC unit housing.
Replacement is the reverse of the removal procedure.


Evaporator Matrix
- Removal and Replacement

Note: Before removing the Evaporator Matrix, discharge the system.
Refer to Conditioning - Refrigerant Charging and Discharging. The evaporator matrix S is located inside the HVAC/air conditioning unit and can be removed without having to remove the HVAC unit from the machine.
Removal
Removal of the evaporator matrix will require the assistance of a refrigeration engineer or suitably trained person since the refrigerant needs to be drained from the system.

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Disconnect the battery.
Gain access to the HVAC unit by removing the right hand side console and remove the HVAC unit top cover, refer to HVAC/Air Conditioning Unit - Removal and Replacement Steps 2 and 3.
Unclip the thermostat evaporator and gently remove the wire from between the fins.

The air conditioning system is a closed loop system and contains pressurised refrigerant. No part of the system must be disconnected except by a refrigeration engineer or suitably trained person. You can be severely frostbitten or injured by escaping refrigerant
Drain the refrigerant from the unit and remove all pipe work (refrigerant and air) which will prevent the unit from being withdrawn from the machine. Check around the top of unit, rear, bottom and right side.
5
Carefully lift the evaporator matrix complete with expansion valve T from the housing, bearing in mind that a certain amount of resistance will be met due to the stiction from the sealing putty. Replacement is the reverse of the removal procedure. 

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JCB Backhoe Loader Parking Brake Adjustment Guide

Here show you guide on how to adjust park brake for JCB backhoe loader.
If you need parts or service information for JCB brand backhoe loader,please check it here:2017 JCB Service Parts Pro + 2017 Service Repair Download

Procedures for JCB backhoe loader brake adjustment.
1.Disengage the parking brake (lever horizontal).
2.Turn handle grip E clockwise, half a turn.
3.Test the parking brake, see Section G, ServiceProcedures.
4.If the brake fails the test, repeat steps 1, 2 and 3. Ifthere is no more adjustment and pin Fis at the end ofits travel get the brake checked by your JCB Dealer

JCB 3CX/4CX Backhoe Loader Instruction and Reviews

THE LATEST JCB 3CX AND 4CX BACKHOES DON’T JUST PROVIDE YOU WITH THE POWER TO GET THINGS DONE; THEY ALSO OFFER YOU COUNTLESS FEATURES TO ENSURE THAT PERFORMANCE IS EFFICIENT, AND OWNERSHIP COSTS ARE REDUCED.

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Residual benefits.
4 A new stainless steel SCR replaces the current exhaust system on backhoes over 55kW (74hp).
We’ve met the strict regulations by reducing NOX emissions by 90%. The emissions of one Stage IV machine are equivalent to ten Stage IIIB machines, creating a substantially cleaner and safer environment, without detriment to fuel consumption, engine power or visibility.

Added efficiency.
To reduce noise and save fuel, we’ve fitted the 3CX and 4CX with a viscous fan as standard; this only cuts in when it’s needed, and doesn’t draw engine power.
5 High back-off brakes reduce viscous drag during roading and rehandling, which in turn improves economy by up to 2%.
6 Because the 3CX and 4CX are fitted with a Thatcham-approved security system (depending on territory), you could benefit from lower insurance premiums.
A high output variable flow pump reduces cycle times and saves fuel. On manual machines, it also provides lighter lever effort for easier control.

Damage limitation.
1 To stop the 3CX or 4CX’s kingpost hoses from snagging and sustaining damage, we enclose them in a flexible, robust guide.

2 The steering ram on these backhoes is protected from impact damage whilst loading, because it’s mounted behind the front axle.

3 To protect boom and dipper hoses from the perils of trenchwork, we’ve enclosed them inside the rear structures of the machine.

4 The rams on our 3CX and 4CX machines are ultra-reliable because they’re protected from debris when loading by optional JCB clam shovel ram guards.
5 To safeguard from impact damage on site, the 3CX and 4CX are now fitted with rear light guards.

Built to last.
6 For added rigidity – and to protect hoses from damage – a 3CX or 4CX has flat plate-depressed loader arms, while cat tail welds reduce stress concentrations.

7 The plastic fuel tank on the 3CX and 4CX is completely rustproof for ultimate fuel injection system protection.

8 The single-piece composite cab floor on these backhoes is also rustproof, and has moulded water channels.

9 JCB’s robot welded single-piece chassis maximises strength and minimises weight.


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Tested to the limits.
10 All the materials with which we construct our backhoe loaders are tested to the very max. By exposing those materials to extreme temperatures, chemicals, salt, oil and light, we know they’ll survive the most hostile conditions.

11 To prove the durability of our new EcoMAX engines, we’ve tested them for 110,000 hours in 70 different machines across the toughest applications
and environments.

The axles and transmissions of JCB 3CXs and 4CXs are built for a 12,000-hour life, with the heavyweight axles designed to withstand massive shock loads. The rear axle alone has a static load rating of 25,000kg, and a dynamic load rating of 12,500kg.

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JCB 3CX/4CX  Reviews:
Auto Check.
• Make looking under the bonnet of your backhoe a thing of the past by having all routine engine checks automatically carried out at the start of every working day.

2 Auto Idle.
• Automatically returns engine rpm to idle saving time and effort.
• Adjustable time delay to suit operators and different applications.
• Potential fuel saving of £122 per year (based on a 1500hr cycle.

3 Auto Throttle.
• Returns engine speed to pre-set hand throttle position when work is resumed.
• Improves ease of use, saves time and reduces effort.
• Maintains idle until levers are activated.

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