30750 14MBX 1. Safety precautions Throughout this book the symbol is used to draw your attention to areas where special care is required, to prevent accidents and injury. • Construction sites are busy places, often with wet, muddy ground, conditions which impede other workers ability to avoid carelessly driven machinery.
14MBX 30750 2. Description of the machine The excavator is made up of a front chassis section, a rear chassis section, a turntable, a cab and equipment consisting of four elements. 2.1 Central joint The ground contact of the four wheels is provided by the oscillation of the rear axle. The ground contact of the four wheels is provided by the oscillation of the rear axle.
30750 14MBX 2.10 Tool-holder At the end of the dipper is the tool-holder permitting the instant changing of the bucket or tool from the cab without manual intervention. The bucket or tool has mechanical and automatic locking, only their unlocking is hydraulically controlled.
14MBX 30750 3.5 Hydraulic system Three completely independent circuits: hydrostatic transmission, equipment circuit, and steering and slewing circuit. 3.5.1 Hydrostatic transmission Reversible closed circuit, with declutching bypass valves in case towing is necessary. Transfer movement pump: ..................... 71 cm Transfer movement engine:................... 107 cm Axial piston engine and pump: Variable displacement and axial piston motor and pump permitting the continuous variation of the transmission ratio over the machine’s entire speed range.
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30750 14MBX 3.5.2 Equipment circuit: Axial piston pump with variable displacement and power control: • Cubic capacity: ........................ 95 cm • Max. delivery: ......................207 l/min. Associated functions by solenoid-operated valves: • Low pressure....................... ~ 35 bars - Accelerator. - Oscillation lock. - Seat pivoting console safety device.
14MBX 30750 5. Table of stability loads in KG 5.1 Lifting and handling in the longitudinal position with standard or telescopic stabilizers. Working conditions: On wheels with the stabilizers fully extended, On level, compact ground. Equipment used without any offset. Front and rear chassis sections aligned.
30750 14MBX 5.2 Lifting and handling in the longitudinal position without stabilizers Working conditions: On wheels without the stabilizers. On level, compact ground. Equipment used without any offset. Front and rear chassis sections aligned. Without any tool (bucket, loader, etc.) with handling plate + hook.
14MBX 30750 5.3 Lifting and handling in the transverse position with standard stabilizers Working conditions: On wheels with the stabilizers fully extended, On level, compact ground. Equipment used without any offset. Front and rear chassis sections aligned. Rear axle oscillation locked. Without any tool (bucket, loader, etc.) with handling plate + hook.
30750 14MBX 5.4 Lifting and handling in the transverse position without stabilizers Working conditions: On wheels without the stabilizers. On level, compact ground. Equipment used without any offset. Front and rear chassis sections aligned. Rear axle oscillation locked. Without any tool (bucket, loader, etc.) with handling plate + hook.
14MBX 30750 5.5 Lifting and handling in the transverse position with telescopic stabilizers Working conditions: On wheels with the telescopic stabilizers fully extended. On level, compact ground. Equipment used without any offset. Front and rear chassis sections aligned. Rear axle oscillation locked. Without any tool (bucket, loader, etc.) with handling plate + hook.
30750 14MBX 6. Towing 6.1 Disconnection of the hydrostatic travel Before carrying out any hydrostatic travel disconnecting operation, make sure that the parking brake is applied. Apply the parking brake (2 fig. 1). Undo the heads of the limiters on the bypass valves (1 fig. 2) situated under the transfer movement pump 2 or 3 turns, using a 22 mm open-ended spanner.
14MBX 30750 6.2 If the turntable is badly oriented The slewing motor is equipped with a safety brake which locks the turntable in the event of a power-assistance pressure fault, red warning light (1 fig. 4). In this case, if the machine needs to be towed and if the turntable is incorrectly oriented, it is necessary to release the motor brake.
30750 14MBX 7. Transporting the machine 7.1 Loading on a trailer Install access ramps whose slope does not exceed 30% if the trailer is not equipped with them originally. Fastening points: (A-B-C fig. 3). Lock the chassis (1 fig. 1). Lock the turntable (1 fig.
Lock the chassis sections using the pin (1 fig. 1), Lock the turntable (1 fig. 2). Note: If necessary, correct the machine’s balance by adjusting the inclination of the boom ram (2 fig. 4). Fig. 4 MODE MECALAC 2 MECALAC 1 Fig. 5 Fig. 6...
30750 14MBX 14. Adjustment procedure 14.1 Adjustment Procedure for the Heat Engine 14.1.1 Adjustment of maximum regime 13 flat spanner 4 hexagonal male spanner Inductive sensor 1- Loosen the lock nut and turn the stop screw (1 fig. 1). Fig. 1 Injection pump Note: Number of teeth on engine wheel: 159.
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14MBX 30750 14.1.2 Adjustment during minimum regime (slowed down) 13 flat spanner Flat screwdriver Inductive sensor 1- Loosen the lock nut and turn the stop screw (1 fig. 1). Fig. 1 Injection pump Note: Number of teeth on engine wheel: 159. Note: For the air-conditioning version of the machines, minimum regime = 1,050 (+ 50 - 0)
30750 14MBX 14.2 Hydraulic adjustment procedure for the gears Before carrying out the checks, heat the hydraulic oil to between 50° and 60° in the tank. 14.2.1 Checking the power-feed pressure 17 flat spanner 5 male hexagonal spanner Manometer, 0-60 bars 1- Place the machine on the ground, speed in neutral, engine in maximum regime.
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14MBX 30750 14.2.2 Starting 13 flat spanner 4 male hexagonal spanner Inductive sensor Manometer 0 - 600 bars 1- Place the machine on a solid, flat surface before engaging high speed. 2- Accelerate the engine progressively until the machine starts. 3- Read the engine revs by monting an inductive sensor on the flywheel (1 fig.
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30750 14MBX 14.2.3 Adjusting the high pressure in forward movement (D.R.) 13 flat spanner 14 flat spanner 17 flat spanner 4 male hexagonal spanner Manometer, 0-600 bars 1- Place the machine in blocked position against a wall, or disconnect and stop up the Inching flex in order to use the service brake.
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14MBX 30750 14.2.4 Adjusting the grind in the heat engine 19 flat spanner 6 male hexagonal spanner Inductive sensor Manometer, 0-600 bars 1- Place the machine in blocked position against a wall, or disconnect and stop up the Inching flex in order to use the service brake.
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30750 14MBX 14.2.5 Adjusting the transfer movement engine (switching point) 10 flat spanner 3 male hexagonal spanner Manometer, 0-600 bars 1- Place the machine on stabiliser support, with wheels raised; forward movement with high speed engaged, engine road configuration in maximum regime. 2- Raise the pressure in the transfer movement engine by progressively applying the stopping brake or the service brake.
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14MBX 30750 14.2.6 Adjusting the minimum capacity of the engine (speed of travel) 19 flat spanner 6 male hexagonal spanner Optoelectronic sensor 1- Place the machine on stabiliser support, with wheels raised; forward movement with high speed engaged, engine road configuration in maximum regime 2- Read the speed in rpm by placing an optoelectronic sensor on the universal gear joint.
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30750 14MBX 14.2.7 Adjusting the Inching flex 17 flat spanner 5 flat hexagonal spanner Manometer, 0-600 bars 1- Place the machine on stabiliser support, with wheels raised; forward movement with low speed engaged, engine in maximum regime. 2- Place full pressure on the Inching pedal until the wheels stop, then gradually release the pedal until the wheels start moving again.
14MBX 30750 14.3 Direction adjustment procedure 17, 27 and 30 flat spanners 5 male hexagonal spanner G DS16 1/2” female stopper G DS16 1/2” male stopper Manometer, 0-600 bars 14.3.1 Adjusting the primary controller Take great care when removing the flex, as it may be under pressure.
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30750 14MBX 14.3.2 Adjusting the ∆ P of the cross-over valve 17 flat spanner 5 flat hexagonal spanner 2 manometers, 0-600 bars Right side: 1- Place the machine equipment in a blocked position and turn the direction to the right, engine in maximum regime.
14MBX 30750 14.4 Hydraulic adjustment of the equipment Before carrying out the checks, heat the hydraulic oil to between 50° and 60° in the tank. 14.4.1 Adjusting the assistance pressure 5/16” male hexagonal spanner 1/4” male hexagonal spanner Manometer, 0-60 bars 1- Engine in maximum regime, place a ram in blocked position, for example the bucket ram.
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2- Raise the regulation controller into its position. Ref = E536A0018 (taring at 50 bars). 3- With engine in maximum regime, set the selector to MECALAC 1 and pull the left key towards the back (blocked position) to allow the oil to circulate . MECALAC 2 MECALAC 1 Fig.
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14MBX 30750 ∆ 14.4.3 Adjusting the P of the equipment with adjustment of the power regulation (F.R. valve) 30 flat spanner 36 flat spanner Flow meter adaptation kit Warning: Take great care when removing the controller, as the chamber for the ram subject to the controller may be under pressure.
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13 flat spanner 4 male hexagonal spanner 2 manometers, 0-600 bars 3- Set the selector to MECALAC 1 and pull the left key towards the back (blocked position) to allow the oil to circulate (small chamber in the dipper ram).
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14MBX 30750 14.4.4 Adjusting the maximum pressure in the equipment pump (D.R.) 13 and 17 flat spanner 4 and 5 male hexagonal spanner Manometer, 0-600 bars 1- Over-tare the L.S. valve on the valve block by turning the controller screw to blocked position (1 fig. 1). Note: take care when over-taring the valve.
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30750 14MBX 14.4.5 Adjusting the maximum pressure of the equipment (L.S. valve) 17 flat spanner 5 male hexagonal spanner Manometer, 0-600 bars 1- With engine in maximum regime, place a ram in blocked position, for example the bucket ram. 2- Measure the pressure (1 fig. 1) using the manometer. Fig.
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Inductive sensor Manometer, 0-600 bars Flow meter adaptation kit 1- Set the selector switch to “MECALAC 1”, pull the left key towards the back, push the right key to the right (blocked position) to allow the oil to circulate (small chambers of the dipper ram and bucket ram).
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Flow meter adaptation kit 1- Place the equipment in blocked position against a wall, set the selector on “MECALAC 1”, pull the left key towards the bac, push the right key to the right (blocked position) to allows the oil to circulate (small chambers of the dipper ram and bucket ram).
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