Komatsu PC50MR-2 Hydraulic Excavator Service Repair Manual SN5001 and up

SEBM032406

Shop Manual

PC27MR-2 PC30MR-2 PC35MR-2 PC40MR-2 PC50MR-2 HYDRAULIC EXCAVATOR SERIAL NUMBERS

PC27MR-2 PC30MR-2 PC35MR-2 PC40MR-2 PC50MR-2

15001 and up 20001 and up 5001 and up 8001 and up 5001 and up

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It is our policy to improve our products whenever it is possible and practical to do so. We reserve the right to make changes or improvements at any time without incurring any obligation to install such changes on products sold previously.

Due to this continuous program of research and development, revisions may be made to this publication. It is recommended that customers contact their distributor for information on the latest revision.

Copyright 2005 Komatsu Printed in U.S.A. Komatsu America Corp.

January 2005

CONTENTS No. of page

01

GENERAL ................................................................................................................01-1

10

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD......................................................................10-1

20

TESTING AND ADJUSTING .......................................................................20-1

30

DISASSEMBLY AND ASSEMBLY ..........................................................30-1

90

OTHERS ....................................................................................................................90-1

00-2 (2)

PC30 – 50MR-2

01 GENERAL SPECIFICATION DIMENSION DRAWING.............................. 01- 2 WORKING RANGE DRAWING ............................................... 01- 3 SPECIFICATIONS ................................................................... 01- 4 WEIGHT TABLE ...................................................................... 01-16 LUBRICANTS, FUEL AND COOLANT SPECIFICATIONS ..... 01-20

PC30 – 50MR-2

01-1

GENERAL

SPECIFICATION DIMENSION DRAWING

SPECIFICATION DIMENSION DRAWING

Item Machine weight

Unit

Canopy specification kg Cab specification

Bucket capacity

m3

Engine model

—

PC27MR-2

PC30MR-2

PC35MR-2

PC40MR-2

PC50MR-2

2,990 <2,780>

3,180 <2,990>

3,740 <3,580>

4,790 <4,540>

5,040 <4,790>

3,165 <2,955>

3,355 <3,165>

3,915 <3,755>

4,940 <4,690>

5,190 <4,940>

0.08

0.09

0.11

0.14

0.16

Komatsu Komatsu Komatsu 3D82AE-5M 3D84E-5N 3D88E-5P Diesel engine Diesel engine Diesel engine

kW{HP}/rpm

18.9 {25.3} / 2,600

20.6 {27.6} / 2,500

21.7 {29.1} / 2,400

A Overall length

mm

4,320

4,630

4,850

B Overall height

mm

C Overall width

mm

D Shoe width

mm

Rated engine output

Tail E swing radius

2,530 1,740 300

mm Cab specification

29.4 {39.4} / 2,350 5,390

5,550 2,625

1,550

Canopy specification

Komatsu 4D88E-5X Diesel engine

1,960 400

855 <775>

950 <870>

1,060 <980>

885 <885>

950 <885>

1,060 <980>

F Overall length of track

mm

1,950

2,105

2,520

G Distance between tumbler centers

mm

1,485

1,650

2,000

Minimum ground clearance

mm

320

290

320

Travel speed (Low / High)

km/h

2.6 / 4.6

2.8 / 4.6

2.8 / 4.6

Continuous swing speed

rpm

9.0

9.0

9.2

9.3

a Values in < > are for the X-weightless specifications.

01-2 (3)

PC30 – 50MR-2

GENERAL

WORKING RANGE DRAWING

WORKING RANGE DRAWING

Working range (mm)

PC27MR-2

PC30MR-2

PC35MR-2

PC40MR-2

PC50MR-2

A

Max. digging radius

4,700

5,150

5,360

5,870

6,220

B

Max. digging depth

2,650

2,910

3,170

3,500

3,800

C

Max. digging height

4,500

4,950

5,010

5,570

5,945

D

Max. vertical wall depth

2,185

2,650

2,720

2,770

3,020

E

Max. dumping height

3,230

3,450

3,530

3,860

4,230

F

Swing radius of work equipment <Values in ( ) are boom swing radii>

1,910 (1,510)

2,010 (1,510)

2,080 (1,590)

2,270 (1,740)

2,270 (1,740)

G

Max. reach at ground level

4,550

5,060

5,225

5,710

6,070

H

Blade lifting height

360

360

360

430

430

I

Blade lowering depth

315

310

390

330

330

PC30 – 50MR-2

01-3 (3)

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