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28000

12MXT

14.1 Adjustment procedure for the heat engine

14.1.1 Adjustment of maximum regime

Loosen the lock nut and turn the stop screw
(1 fig. 1).

Note: Number of teeth on engine wheel = 159

13 flat spanner
4 hexagonal male spanner
Inductive sensor

Operation

Speed

(rpm)

Adjustment

(ref. no.)

Maximum regime

2,225 (+25 -25)

1 fig. 1

Fig. 1 Injection pump

Fig. 2 Heat engine

14. Adjustment procedure

Содержание 12 MXT

Страница 1: ...HANDBOOK OF REPAIR MANUFACTURER MECALAC SAS...

Страница 2: ......

Страница 3: ...transverse position with standard stabilizers 13 5 4 Lifting and handling in the transverse position without stabilizers 14 5 5 Lifting and handling in the transverse position with telescopic stabiliz...

Страница 4: ...5 Volvo tool holder option 43 9 16 Additional hydraulic electrical control of the additional function option 44 10 Parts list of the hydraulic diagram 45 11 Installation of the electric bundles 47 12...

Страница 5: ...ed to familiarise the user with the machine and its designated use The instruction manual contains important information on how to operate the machine safely properly and most efficiently Observing th...

Страница 6: ...and slewing movements 2 4 Transmission The transmission is of the permanent 4x4 type with a limited slip differential on both axles 2 5 Turntable The turntable is connected to the front chassis sectio...

Страница 7: ...he dipper is the tool holder permitting the instant changing of the bucket or tool from the cab without manual intervention Buckets or tools are taken up automatically Only their unlocking requires hy...

Страница 8: ...wheel reducer 4 planet wheels 1 6 Self blocking differential limited slip 45 Integrated oil bath disc brakes 6 discs at the front 6 discs at the rear 3 3 Capacities Hydraulic oil tank 82 l Total capa...

Страница 9: ...control L site between 0 and 6 kph H road between 0 and 26 kph Possibility of control in loader mode L or H and F or R using the right manipulator Inching slow approach control Allows reducing the dis...

Страница 10: ...nt Hydraulical assisted proportional function controls by manipulators or foot operated controls supplied at low pressure with standby accumulator 3 5 3 Slewing and hydrostatic steering circuit Hydros...

Страница 11: ...28000 12MXT M1 9 4 Equipment s travel curves 4 1 In back hoe bucket position 7 m 6 m 5 m 4 m 3 m 2 m 1 m 0 m 1 m 2 m 3 m 4 m 0 m 1 m 1 m 2 m 2 m 3 m 3 m 4 m 5 m 6 m 7 m 7560 5580 3720 6860 6740 2500...

Страница 12: ...12MXT 28000 10 M1 4 2 In loading bucket position 0 m 1 m 1 m 2 m 2 m 3 m 3 m 4 m 5 m 6 m 7 m 7 m 6 m 5 m 4 m 3 m 2 m 1 m 0 m 1 m 2 m 3 m 4 m 3620 7450 6100 6735 6620...

Страница 13: ...ent used without any offset Front and rear chassis sections aligned Without any tool bucket loader etc with handling plate hook Stability loads and hydraulic limits according to standard ISO 10567 5 T...

Страница 14: ...und Equipment used without any offset Front and rear chassis sections aligned Without any tool bucket loader etc with handling plate hook Stability loads and hydraulic limits according to standard ISO...

Страница 15: ...used without any offset Front and rear chassis sections aligned Rear axle oscillation locked Without any tool bucket loader etc with handling plate hook Stability loads and hydraulic limits according...

Страница 16: ...sed without any offset Front and rear chassis sections aligned Rear axle oscillation locked Without any tool bucket loader etc with handling plate hook Stability loads and hydraulic limits according t...

Страница 17: ...d 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 Stability loads and hydraulic limit...

Страница 18: ...gned Without any tool bucket loader etc Bucket ram always full extended with hook fixed on tool holder rod Stability loads and hydraulic limits according to standard ISO 10567 7 m 6 m 5 m 4 m 3 m 2 m...

Страница 19: ...aligned Without any tool bucket loader etc Bucket ram always full extended with hook fixed on tool holder rod Stability loads and hydraulic limits according to standard ISO 10567 7 m 6 m 5 m 4 m 3 m 2...

Страница 20: ...e oscillation locked Without any tool bucket loader etc Bucket ram always full extended with hook fixed on tool holder rod Stability loads and hydraulic limits according to standard ISO 10567 7 m 6 m...

Страница 21: ...xle oscillation locked Without any tool bucket loader etc Bucket ram always full extended with hook fixed on tool holder rod Stability loads and hydraulic limits according to standard ISO 10567 7 m 6...

Страница 22: ...ssis sections aligned Rear axle oscillation locked Without any tool bucket loader etc Bucket ram always full extended with hook fixed on tool holder rod Stability loads and hydraulic limits according...

Страница 23: ...e parking brake only after connecting the machine to the tractor s towing bar Note If the accumulator pressure is not sufficient to release the parking brake red indicator light 1 fig 4 unscrew the ra...

Страница 24: ...e brake is filled with oil Connect the grease gun 4 fig 6 Operate the gun until the pressure gauge reads 30 bar 1 fig 6 Align the turntable and lock it mechanically 1 fig 7 Tow the machine Cause the p...

Страница 25: ...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 2 Lower the equipment to the ground using the control mani...

Страница 26: ...Lock the oscillation 1 fig 5 The machine will not be articulated Lock the chassis sections using the links 1 fig 1 Lock the turntable 1 fig 2 Note If necessary correct the machine s balance by adjusti...

Страница 27: ...nents 3 4 5 6 7 10 9 8 12 11 1 2 1 Tool holder ram 2 Bucket ram 3 Dipper ram 4 Offset ram 5 Intermediate boom ram 6 Boom ram 7 Accelerator ram 8 Oscillation locking ram 9 Steering ram 10 Stabilizer ra...

Страница 28: ...valve 2 Solenoid operated oscillation locking valve 3 Transfer movement engine 4 Transfer movement pump 5 Stabilizers solenoid operated valve 6 Equipment pump 7 Orientation pump 8 Telescopic stabiliz...

Страница 29: ...28000 12MXT M1 27 1 6 2 3 4 5 7 1 SX14 valve block 2 High pressure function block 3 Priority valve 4 Orientation engine 5 CROSS OVER valve 6 Low pressure driving unit 7 Braking block...

Страница 30: ...Rotary coupling 2 Left manipulator 3 Additional functions foot control 4 Brake Inching foot control 5 ORBITROL steering device 6 Accelerator foot control 7 Right manipulator 8 Parking brake control le...

Страница 31: ...28000 12MXT M1 29 9 Hydraulic diagrams 9 1 Travel circuit F B S T1 A B X T T G M1 A PS A2 A1 A3 A1 Hydraulic reservoir A2 Transfer movement engine A3 Transfer movement pump...

Страница 32: ...A3 B10 B9 A1 B1 B3 B2 B8 B11 A1 Hydraulic reservoir A3 Transfer movement pump B1 Parking brake control B2 Brake foot control B3 Accelerator foot control B4 Parking brake ram B5 Front axle B6 Rotary c...

Страница 33: ...P M1 M2 Z2 Z1 A B P2 E B6 B13 B12 C7 C6 C1 C2 C4 C3 C5 E8 A1 C8 A1 Hydraulic reservoir B6 Rotary coupling B12 Drain block B13 Turntable rotation C1 SX14 valve block C2 Left manipulator C3 Priority val...

Страница 34: ...1 T2 LS B B B B 3 4 5 T P T P P T G P1 F2 T M MS F3 F A1 PS LS X 5 5 1A 2 1 A B E8 B12 B13 B6 B11 C1 D1 C2 B6 Rotary coupling B11 Functions block High pressure B12 Drain block B13 Turntable rotation C...

Страница 35: ...T P 2A 1A P1 A B A3 B6 C1 E1 E9 E2 E8 E3 E4 A1 E7 E7 E5 E6 A1 Hydraulic reservoir A3 Transfer movement pump B6 Rotary coupling C1 SX14 valve block E1 Left stabilizer ram E2 Left electric manipulator E...

Страница 36: ...B1B B1A PD2 BF2 B2A B1 B2 3 01 B2B F1 BF1 C2 B11 B12 F1 C1 D1 F3 F2 F5 F4 F6 B11 Functions block High pressure B12 Drain block C1 SX14 valve block C2 Left manipulator D1 Right manipulator F1 Addition...

Страница 37: ...28000 12MXT M1 35 9 7 Bucket circuit A B 2 4 G1B G1A G2A G2B F5 D1 G1 C1 C1 SX14 valve block D1 Right manipulator F5 Piloting unit Low pressure G1 Bucket ram...

Страница 38: ...ntrol element H3 Equipment supply inlet element H4 Boom control element H5 Intermediate boom control element H6 Bucket control element H7 Dipper control element H8 Additional functions control element...

Страница 39: ...28000 12MXT M1 37 9 9 Additional hydraulic equipment for fitting of the hammer return on the equipment option A B T I1 C1 C1 SX14 valve block I1 Hammer return hose...

Страница 40: ...12MXT 28000 38 M1 9 10 Tool holder circuit option A2 J2 B11 J1 B11 Functions block High pressure J1 Tool holder ram J2 Tool holder...

Страница 41: ...28000 12MXT M1 39 9 11 Air conditioning circuit option K1 K2 K3 B11 B6 B6 Rotary coupling B11 Functions block High pressure K1 Compressor K2 Solenoid valve K3 Priority block...

Страница 42: ...C2 C4 PC GC A B GC PC A B GC PC C1 L1 L3 B6 E1 E2 E5 L3 L2 E3 E4 B6 Rotary coupling E1 Left stabilizer ram E2 Left electric manipulator E3 Right stabilizer ram E4 Right electric manipulator E5 Stabili...

Страница 43: ...M5 C1 G1 F3 B11 Functions block High pressure C1 SX14 valve block F3 Dipper ram F4 Intermediate boom ram F5 Piloting unit Low pressure F6 Boom ram G1 Bucket ram M1 Boom ram valve M2 Load detector M3...

Страница 44: ...7 F2 3 1 2 T 10 10 A P T F P M1 M2 B9 B12 B13 B10 B6 B3 N1 B11 B3 Accelerator foot control B6 Rotary coupling B9 Diesel engine B10 Accelerator ram B11 Functions block High pressure B12 Drain block B1...

Страница 45: ...ool holder option A B T P M1 A2 D1 D2 T2 1 X T1 O2 B11 O1 C6 C5 B11 Functions block High pressure C5 Hydraulic turntable slewing motor C6 CROSS OVER block with damped valve O1 Tool holder ram O2 Tool...

Страница 46: ...ontrol of the additional function option 2 1 P T 3 PD2 PD1 01 02 C2 A T B 2 C1 F5 P2 P1 B12 F1 B11 B11 Functions block High pressure B12 Drain block C1 SX14 valve block F1 Additional functions foot co...

Страница 47: ...tion locking ram 34 Left stabilizer ram 35 Stabilizer block 36 Rotary coupling 37 Hydraulic reservoir 38 Service brake ram 39 Check valve ARQ 0 5 bar 40 Auxiliary pedal control 41 Accelerator ram 42 H...

Страница 48: ...12MXT 28000 46 M1 13 12 10 14 14 11 9 15 16 7 8 6 3 2 4 18 5 17 1...

Страница 49: ...Cab connection 7 Solenoid operated valves bundle 8 Left front headlight connection 9 Driver station bundle 10 Steering column bundle 11 Instrument panel connection 12 Foot controls bundle 13 Right fr...

Страница 50: ...12MXT 28000 48 M1 Y3 Y2 Y4 Y3A Y5 Y5A Y1 Y10 Y9 Y100 Y8 Y7...

Страница 51: ...ng of rams solenoid operated valve Y4 MECALAC 2 option solenoid operated valve control unit Y5 Boom inter boom solenoid operated valve control unit Y5A Boom inter boom solenoid operated valve control...

Страница 52: ...12MXT 28000 50 M1 Y18 Y17 Y15 Y20 Y19 Y11 Y13 Y12 Y14 Y22 Y21...

Страница 53: ...ed valve Y14 Right stabilizer lowering solenoid operated valve Y15 Low speed solenoid operated valve Y17 Reverse solenoid operated valve Y18 Forward solenoid operated valve Y19 Inversion of direction...

Страница 54: ...12MXT 28000 52 M1 R1 R5 R6 R4 R7 R2 R8 R10 R9 R11 K3 K4 K5 K6 K2 K1 R3 15 F1 F3 F4 F6 F7 F2 F8 F9 F5 X10 X23 X13 X22 X18 X1 X21 R1 R2 R3 R4 R5 R6 R7 R11 K1 K2 K3 K6 K5 K4 R8 R9 R10 X16 R12 R13...

Страница 55: ...F and reverse R in Loader function R5 Relay Low speed I R6 Relay Forward F solenoid operated valve R7 Relay Forward F Commodo R8 Relay Forward F and reverse R inversion R9 Relay MECALAC mode R10 Rela...

Страница 56: ...5 R19 R21 R20 R16 R18 R17 R25 R27 R26 R22 R24 R23 F10 F12 F16 F18 F22 F11 F23 F24 F17 F13 F15 F19 F21 F14 F20 F25 F27 F28 F30 F26 F29 15 30 30 X24 X19 X26 K7 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R2...

Страница 57: ...light F25 7 5 A fuse Horn F26 10 A fuse Pneumatic seat compressor F27 10 A fuse F1 F2 options F28 3 A fuse Turntable alignment F29 10 A fuse Manual accelerator option F30 7 5 A fuse Stop light and bra...

Страница 58: ...e Heating fan supply F37 3 A fuse Number plate light F38 25 A fuse Not used F39 15 A fuse Not used F40 60 A fuse Turntable supply R28 Relay Reversing lights and audible reversing signal R29 Relay Forw...

Страница 59: ...creen wiper F20 3 A fuse Resetting and front windscreen wiper F21 5 A fuse Position lights F22 5 A fuse Oscillation lock F23 Not used F24 7 5 A fuse Revolving light F25 7 5 A fuse Horn F26 10 A fuse P...

Страница 60: ...under the seat s right hand console S18 Tool unlocking pushbutton S19 Heating fan switch S20 Air conditioning switch S21 Pushbutton for hammer on left manipulator option X1 A relay plate connector X9...

Страница 61: ...ime 1 Loosen the lock nut and turn the stop screw 1 fig 1 Note Number of teeth on engine wheel 159 1 13 flat spanner 4 hexagonal male spanner Inductive sensor Operation Speed rpm Adjustment ref no Max...

Страница 62: ...down 1 Loosen the lock nut and turn the stop screw 1 fig 1 Note Number of teeth on engine wheel 159 1 13 flat spanner Flat screwdriver Inductive sensor Operation Speed rpm Adjustment ref no Minimum r...

Страница 63: ...e ground speed in neutral engine in maximum regime 2 Measure the pressure 1 fig 1 using the manometer 3 If the pressure is too low turn the screw 1 fig 2 clockwise in order to increase the pressure Op...

Страница 64: ...monting an inductive sensor on the flywheel 1 fig 1 4 If the regime of the engine is too low turn the screw 1 fig 2 clockwise in order to increase the speed of the engine 13 flat spanner 4 male hexago...

Страница 65: ...e manometer 3 If the pressure is too low turn the screw 1 fig 2 clockwise to increase the pressure Note The H P shock absorbers 1 fig 3 for forward and reverse movement are tared at 490 bar 10 10 bar...

Страница 66: ...lacing an optoelectronic sensor on the fan pulley 4 Measure the high pressure 1 fig 1 using the manometer 5 If the regime of the engine is too high turn the screw 1 fig 2 clockwise in order to reduce...

Страница 67: ...flex 3 The pressure 1 fig 1 in the transfer movement engine rises slowly and then drops sharply 4 Turn the screw 1 fig 2 clockwise to slow down the sharp fall in pressure in the transfer movement eng...

Страница 68: ...the speed in rpm by placing an optoelectronic sensor on the universal gear joint 3 Turn the screw 1 fig 1 anti clockwise to increase the number of rpm 19 flat spanner 6 male hexagonal spanner Optoelec...

Страница 69: ...the high pressure while the wheels are rotating 1 fig 1 using the manometer Note The pressure should not rise sharply when the wheels begin to rotate again 4 If the manometer reading indicates a shar...

Страница 70: ...S OVER unit 3 Point the tower to the right in order to put the flex under pressure engine in maximum regime 4 Measure the pressure 1 fig 2 using the manometer 5 Loosen the lock nut and turn the pressu...

Страница 71: ...P of the right side Left side 4 Place the machine equipment in a blocked position and turn the direction to the left engine in maximum regime 5 Measure the difference in pressure between 1 fig 1 and 2...

Страница 72: ...n for example the bucket ram 2 Measure the pressure on the assistance pressure unit 1 fig 1 using the manometer 3 Remove the stopper and turn the controller screw 1 fig 2 clockwise in order to increas...

Страница 73: ...t manipulator to the right blocked position to allow oil to circulate 4 Measure the difference in pressure between 2 fig 1 and 1 fig 2 using the two manometers 5 Loosen the lock nut and turn the screw...

Страница 74: ...the hoses from the valve block small chambers of the dipper ram and intermediate boom ram 1 fig 1 and 2 fig 1 large chambers of the dipper ram and intermediate boom ram 3 fig 1 and 4 fig 1 2 Fit the f...

Страница 75: ...ters 5 Turn the screw 1 fig 5 clockwise in order to increase the P Note The flow meter kit shall remain installed for adjusting the power regulation 28000 12MXT M1 73 17 flat spanner 3 male hexagonal...

Страница 76: ...ime 3 Measure the pressure 1 fig 2 using the manometer 4 Loosen the lock nut and turn the pressure controller screw 1 fig 3 clockwise in order to increase the pressure Note After this step it is monda...

Страница 77: ...1 fig 1 using the manometer 3 Loosen the L S controller 1 fig 2 previously over tared then adjust the pressure by turning the screw clockwise in order to increase the pressure 19 flat spanner 5 male h...

Страница 78: ...ed 5 Measure the pressure 1 fig 2 using the pressure gauge 6 Undo the lock nut and turn the L R valve s screw 1 fig 3 clockwise to increase the pressure 7 Remove the connector with the hose and refit...

Страница 79: ...ometer 5 Loosen the lock nut and turn the pressure controller screw 1 fig 3 clockwise to increase the pressure 6 Reduce the flow 87 l min using the tap on the flow meter 1 fig 1 7 Measure the pressure...

Страница 80: ...owards the right blocked position 3 Screw the tap on the flow meter 1 fig 1 until the flow is cut off completely Note During this operation check that the regime of the engine does not exceed 2 000 rp...

Страница 81: ...0 50 0 Slewing Primary controller 250 5 0 P right 225 5 0 P left 225 5 0 Equipment Assistance pressure 35 3 0 Equipment D P 15 1 1 Equipment pressure L R 22 1 1 Maximum pump pressure D R 310 10 0 Maxi...

Страница 82: ...12MXT 28000 80 M1...

Страница 83: ...x MT 4010 2 Male union 4DL8 7 16 unf 20 3 Pressure sensor 4 20 mA 0 600 4 Pressure sensor 4 20 mA 0 60 5 Pressure limiter 50 bar taring calibration 6 Reduction mounting of the turbine on 14MXT 7 Flexi...

Страница 84: ...4 1 Flexible hose connection from the turbine to the SX18 valve block 2 Turbine flow meter 3 Connecting cable 4 Flexible hose connection from the turbine to the SX18 valve block Fig 3 TOP TEST MX too...

Страница 85: ...28000 12MXT M1 83 1 5180102 2 5180103 3 5180104 4 6525004 5 6525003 6 572A0003 1 2 3 4 5 6 Fig 4 Special connector tools...

Страница 86: ...12MXT 28000 84 M1 T13 T14 T15 T16B T16C T16A 1 5 2 3 T19 T21 T22 4 1 5450060 2 5450061 3 5450062 4 5450063 5 5450064 Fig 5 Axles tool DANA...

Страница 87: ...28000 12MXT M1 85...

Страница 88: ...GROUPE MECALAC MECALAC S A S Parc des Glaisins 2 av du Pr de Challes F 74940 Annecy le Vieux T l 33 0 4 50 64 01 63 Fax 33 0 4 50 64 02 79 www mecalac com...

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