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Service Manual (20 Crawler Dozers

ints)

PR 711C - 751 (10


PR 751 Mining

F/N 156xxx

DIESEL ENGINE Type Engine version Rating Rated RPM Displacement Low idle RPM High idle RPM Oil quantity incl. filter Oil specification Max. machine inclination - all directions Valve clearance -cold intake/exhaust Firing order Coolant capacity Fuel tank capacity Fuel consumption

kW 1/min l 1/min 1/min l

mm l l appr. l/h

KT 19 C in line 6 - intercooled turbocharged 276 (375 HP) 1800 18.9 +50 800 1930+40/-15 50 see Operation and Maintenance Manual 45° = 100% 0,36 / 0,69 1-5-3-6-2-4 75 610 40 - 65

SPLITTERBOX Type Gear version Ratio Oil quantity Oil specifications

i l

350 C 356 1 stage spur gear 0,81 3 see Operation and Maintenance Manual

HYDRAULIC SYSTEM Travel pumps type max. flow - Q max. l/min max operating pressure bar Gear pumps - repl. circuit type repl. / cooling max. flow - Q max. l/min max. operating pressure (SP) p max. bar Gear pump - servo circuit type max. flow - Q max. l/min operating pressure (Y) p max. bar Gear pump - fan drive type max. flow - Q max. l/min max. operating pressure p max. bar

2 x BPV 200 HF 2x439 420 Bosch 2 x 87 16+4 Bosch 12 19+1 Bosch 34 150+-5

Travel motors

type

4 x BMV 186 HF

Tandem pump working hydraulic max. flow - Q max. max. operating pressure (HD) p max Control valve block - working hydraulic

type l/min bar type

Rexroth G4.20/100+G4/40 271 160 Rexroth M1 - 1186 / NG 32

Servo - operating pressure - working hydraulic (ND)

bar

Hydr. tank capacity - +circuit capacity Oil specifications

18

+5

max.25

l l

275 125 see Operation and Maintenance Manual

V

24 2x12V 170Ah (in series) 28V 50A 10 (13,4 HP) see Operation and Maintenance Manual

ELECTRICAL SYSTEM Voltage Batteries Alternator Starter Fuses

kW A Benennung Description Dénomination

Mjfcifss! Datum Edition Date

01 01

Technical Data (Mining 375 HP)

Typ/ab

  PR 751 Blatt Page Feuille

Type/from

Type/a partir de

 F/N 156-xxx

3.1.50.02


PR 751 Mining

F/N 156xxx

TRAVEL GEAR Type Gear version Parking brake Ratio Oil quantity Oil specifications

i total l

2 x SFG 3 stage spur gear drum type 64 : 1 2 x 61 see Operation and Maintenance Manual

TRACK COMPONENTS Track chain pitch Track chain length Track pad width ( single grouser) Track pad bolts Track rollers - single flange (s) Track rollers - double flange (d) Track roller location Carrier rollers each side Oscillation of track roller frame

mm / inch links mm thread. size qty. qty.

228,6 / 9 41 560/610/711 7/8” UNF 4 3 s-d-s-d-s-d-s 2 +/- 3,5°

ATTACHMENT Lift cylinder

cyl.

/ rod.

/ stroke

mm

130 / 70 / 1340

Tilt cylinder

cyl.

/ rod.

/ stroke

mm

220 / 90 / 160

Ripper cylinder lift

cyl.

/ rod.

/ stroke

mm

200 / 110 / 650

Ripper cylinder tilt

cyl.

/ rod.

/ stroke

mm

200 / 110 / 650

GENERAL DATA Travel speed -

normal speed range

km/h

0

9.5 infinitely variable

reduced speed range

km/h

0

4.5 infinitely variable

Drawbar pull max.

kN

530

Ground clearance

mm

450

For Measurements see Operation and Maintenance Manual


PR 751 Mining

F/N 156xxx

DIESEL ENGINE Type Engine version Rating Rated RPM Displacement Low idle RPM High idle RPM Oil quantity incl. filter Oil specification Max. machine inclination - all directions Valve clearance -cold intake/exhaust Firing order Coolant capacity Fuel tank capacity Fuel consumption

kW 1/min l 1/min 1/min l

mm l l appr. l/h

KT 19 C in line 6 - intercooled turbocharged 276 (401 HP) 1800 18.9 +50 800 1930+40/-15 50 see Operation and Maintenance Manual 45° = 100% 0,36 / 0,69 1-5-3-6-2-4 75 610 40 - 65

SPLITTERBOX Type Gear version Ratio Oil quantity Oil specifications

i l

350 C 356 1 stage spur gear 0,81 3 see Operation and Maintenance Manual

HYDRAULIC SYSTEM Travel pumps type max. flow - Q max. l/min max operating pressure bar Gear pumps - repl. circuit type repl. / cooling max. flow - Q max. l/min max. operating pressure (SP) p max. bar Gear pump - servo circuit type max. flow - Q max. l/min operating pressure (Y) p max. bar Gear pump - fan drive type max. flow - Q max. l/min max. operating pressure p max. bar

2 x BPV 200 HF 2x439 420 Bosch 2 x 87 16+4 Bosch 12 19+1 Bosch 34 150+-5

Travel motors

type

4 x BMV 186 HF

Tandem pump working hydraulic max. flow - Q max. max. operating pressure (HD) p max Control valve block - working hydraulic

type l/min bar type

Rexroth G4.20/100+G4/40 271 160 Rexroth M1 - 1186 / NG 32

Servo - operating pressure - working hydraulic (ND)

bar

Hydr. tank capacity - +circuit capacity Oil specifications

18

+5

max.25

l l

275 125 see Operation and Maintenance Manual

V

24 2x12V 170Ah (in series) 28V 50A 10 (13,4 HP) see Operation and Maintenance Manual

ELECTRICAL SYSTEM Voltage Batteries Alternator Starter Fuses

kW A Benennung Description Dénomination

Mjfcifss! Datum Edition Date

01 01

Technical Data (Mining 401 HP)

Typ/ab

  PR 751 Blatt Page Feuille

Type/from

Type/a partir de

 F/N 156-xxx

3.1.50.03


PR 751 Mining

F/N 156xxx

TRAVEL GEAR Type Gear version Parking brake Ratio Oil quantity Oil specifications

i total l

2 x SFG 3 stage spur gear drum type 64 : 1 2 x 61 see Operation and Maintenance Manual

TRACK COMPONENTS Track chain pitch Track chain length Track pad width ( single grouser) Track pad bolts Track rollers - single flange (s) Track rollers - double flange (d) Track roller location Carrier rollers each side Oscillation of track roller frame

mm / inch links mm thread. size qty. qty.

228,6 / 9 41 560/610/711 7/8” UNF 4 3 s-d-s-d-s-d-s 2 +/- 3,5°

ATTACHMENT Lift cylinder

cyl.

/ rod.

/ stroke

mm

130 / 70 / 1340

Tilt cylinder

cyl.

/ rod.

/ stroke

mm

220 / 90 / 160

Ripper cylinder lift

cyl.

/ rod.

/ stroke

mm

200 / 110 / 650

Ripper cylinder tilt

cyl.

/ rod.

/ stroke

mm

200 / 110 / 650

GENERAL DATA Travel speed -

normal speed range

km/h

0

9.5 infinitely variable

reduced speed range

km/h

0

4.5 infinitely variable

Drawbar pull max.

kN

530

Ground clearance

mm

450

For Measurements see Operation and Maintenance Manual


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Liebherr pr721c crawler dozer service repair manual  
Liebherr pr721c crawler dozer service repair manual  
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