303.5E2 CR Caterpillar Mini Hyd Excavator Service Repair Manual

Product: MINI HYD EXCAVATOR

Model: 303.5E2 CR MINI HYD EXCAVATOR DWD

Configuration: 303.5E2CR Mini Hydraulic Excavator DWD00001-UP (MACHINE) POWERED BY C1.7 Engine

Disassembly and Assembly

303.5E2, 304E2, 305E2 and 305.5E2 Mini Excavator Machine Systems

Media Number -M0074050-00

Publication Date -01/09/2014 Date Updated -27/10/2016

Blade - Remove and Install

SMCS - 6060-010

Removal Procedure Table 1

i06738351

1

2

3

2. Attach a suitable lifting device to blade cylinder (3). The weight of blade cylinder (3) is approximately 18.1436 kg (40 lb). Remove bolt (5) and pin assembly (4). Lower the head end of blade cylinder (3) to the ground. Install pin assembly (4) and bolt (5).

4

Illustration 5

3. Attach Tooling (A) and a suitable lifting device to blade (8). The weight of blade (8) is approximately 192 kg (425 lb). Remove bolt (6) and pin assembly (7). Repeat for the other side.

Illustration 6 g01226763

4. Remove lip seals (9). Use Tooling (B) to remove bushing (10). Repeat for the other side.

Installation Procedure

Table 2 Required Tools Tool Part Number Part Description Qty

A 189-0410 Shackle As 2

B 1P-0520 Driver Gp 1

Illustration 7 g01226763

1. Use Tooling (B) to install bushing (10). Repeat for the other side. Install lip seals (9).

Illustration 8

Illustration 9

2. Attach Tooling (A) and a suitable lifting device to blade (8). The weight of blade (8) is approximately 192 kg (425 lb). Install pin assembly (7). Install bolt (6). Repeat for the other side.

Illustration 10 g01226721

11

3. Remove bolt (5) and pin assembly (4). Attach a suitable lifting device to blade cylinder (3). The weight of blade cylinder (3) is approximately 18 kg (40 lb). Raise the head end of blade cylinder (3) into position. Install pin assembly (4) and bolt (5).

12

4. Install cover (2) and bolts (1). Copyright 1993 - 2020 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees. Mon Aug 24 10:36:55 UTC+0530 2020

This is the sample of the manual

Click on the download link for complete Manual

Product: MINI HYD EXCAVATOR

Model: 303.5E2 CR MINI HYD EXCAVATOR DWD

Configuration: 303.5E2CR Mini Hydraulic Excavator DWD00001-UP (MACHINE) POWERED BY C1.7 Engine

Disassembly and Assembly

303.5E2, 304E2, 305E2 and 305.5E2 Mini Excavator Machine Systems

Media Number -M0074050-00

Publication Date -01/09/2014

Blade Cylinder - Remove and Install

SMCS - 7562-010-BG

Removal Procedure

Start By:

a. Release the hydraulic system pressure.

Date Updated -27/10/2016

i06732854

Cylinders equipped with lockvalves can remain pressurized for very long periods of time, even with the hoses removed.

Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death.

Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.

Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes to prevent fluid loss and to keep contaminants from entering the system.

Illustration 1

1. Remove bolts (1) and cover (2).

2

2. Disconnect hose assemblies (3) and (4).

3

3. Attach a suitable lifting device to blade cylinder (7). The weight of blade cylinder (7) is approximately 34 kg (75 lb). Remove bolt (6) and pin assembly (5). Remove bolt (9) and pin assembly (8). Remove blade cylinder (7).

Disassembly and Assembly Information

1

When you are using hydraulic cylinders and puller studs, always ensure that the rated capacity of the puller stud meets or exceeds the rated capacity of the hydraulic cylinder. If the puller stud does not meet or

exceed the rated capacity of the hydraulic cylinder, a sudden failure of the puller stud could occur. The sudden failure of the puller stud could result in personal injury or death.

Cylinders equipped with lockvalves can remain pressurized for very long periods of time, even with the hoses removed.

Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death.

Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.

Note: Tooling (A) is used for the installation of bearings (10) at the rod end and the head end of the blade cylinder. Tooling (B) is used for the removal of bearings (10) at the rod end and the head end of the blade cylinder.

Illustration 4

Installation Procedure

Illustration 5

1. Attach a suitable lifting device to blade cylinder (7). The weight of blade cylinder (7) is approximately 34 kg (75 lb). Install blade cylinder (7). Install pin assembly (5) and bolt (6). Install pin assembly (8) and bolt (9).

6 g01226702

2. Connect hose assemblies (3) and (4).

Illustration 7

3. Install cover (2) and bolts (1).

Copyright 1993 - 2020 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.

Mon Aug 24 10:36:39 UTC+0530 2020

Product: MINI HYD EXCAVATOR

Model: 303.5E2 CR MINI HYD EXCAVATOR DWD

Configuration: 303.5E2CR Mini Hydraulic Excavator DWD00001-UP (MACHINE) POWERED BY C1.7 Engine

Disassembly and Assembly

303.5E2, 304E2, 305E2 and 305.5E2 Mini Excavator Machine Systems

Media Number -M0074050-00

Publication Date -01/09/2014 Date Updated -27/10/2016

i04777959

Blower Motor (Air Conditioner, Heater) - Remove and Install

SMCS - 7304-010-BW; 7309-010-BW; 7320-010-BW

Removal Procedure

Start By:

a. Remove the heating and air conditioning unit.

Illustration 1

1. Remove screws (1).

g01226046

Illustration 2

2. Remove cab air filter (2). Remove cap (3) and louver (4).

Illustration 3

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3. Disconnect harness assemblies (5) and (6).

Illustration 4

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4. Remove screws (7) and switch assembly (8).

Illustration 5

5. Disconnect relay assemblies (11) and (12). Remove screws (9) and cover (10).

Illustration 6

g01226109

6. Remove hose (13). Remove screws (15) and (16). Remove cover (14).

Illustration 7

g01226111

7. Remove blower motor (17).

Installation Procedure

Illustration 8

1. Install blower motor (17).

Illustration 9

2. Install cover (14). Install screws (15) and (16). Install hose (13).

10

3. Install cover (10) and screws (9). Connect relay assemblies (11) and (12).

Illustration 11

4. Install switch assembly (8) and screws (7).

Illustration 12

5. Connect harness assemblies (5) and (6).

13

Illustration 14

7. Install screws (1).

End By: a. Install the heating and air conditioning unit.

1993 - 2020 Caterpillar Inc.

Rights Reserved.

Network For SIS Licensees. Mon Aug 24 10:45:21 UTC+0530 2020

Product: MINI HYD EXCAVATOR

Model: 303.5E2 CR MINI HYD EXCAVATOR DWD

Configuration: 303.5E2CR Mini Hydraulic Excavator DWD00001-UP (MACHINE) POWERED BY C1.7 Engine

Disassembly and Assembly

303.5E2, 304E2, 305E2 and 305.5E2 Mini Excavator Machine Systems

Media Number -M0074050-00 Publication Date -01/09/2014 Date Updated -27/10/2016

i06741160

Boom - Install

Installation Procedure

1

1. Use Tooling (C) to install bearings (14) into boom (11).

2. Install pin assembly (10) that is retained the head end of the stick cylinder. Install bolt (9). Attach a suitable lifting device to pin assembly (10). Pin assembly (10) will be used for the installation of boom assembly (11). The weight of boom assembly (11) is approximately 295 kg (650 lb).

3. Install boom assembly (11). Install pin assembly (12) and bolt (13).

Connect hose assemblies (8). Install clip (7).

6

5. Connect harness assemblies (4) and (5). Install cable straps (6).

Illustration 7

Illustration 8

6. Attach a suitable lifting device to the rod end of boom cylinder (3). The weight of the rod end of boom cylinder (3) is approximately 25 kg (55 lb). Raise the rod end of boom cylinder off Tooling (A) and into position. Install pin assembly (2) and bolt (1).

End By:

a. Install the stick.

b. Install the stick cylinder. Copyright 1993 - 2020 Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees.

Product: MINI HYD EXCAVATOR

Model: 303.5E2 CR MINI HYD EXCAVATOR DWD

Configuration: 303.5E2CR Mini Hydraulic Excavator DWD00001-UP (MACHINE) POWERED BY C1.7 Engine

Disassembly and Assembly

303.5E2, 304E2, 305E2 and 305.5E2 Mini Excavator Machine Systems

Media Number -M0074050-00

Boom - Remove

Removal Procedure

Table 1

Start By:

a. Remove the stick cylinder.

b. Remove the stick.

When you are using hydraulic cylinders and puller studs, always ensure that the rated capacity of the puller stud meets or exceeds the rated capacity of the hydraulic cylinder. If the puller stud does not meet or exceed the rated capacity of the hydraulic cylinder, a sudden failure of the puller stud could occur. The sudden failure of the puller stud could result in personal injury or death.

Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes to prevent fluid loss and to keep contaminants from entering the system.

1

2

1. Attach a suitable lifting device to the rod end of boom cylinder (3). The weight of the rod end of boom cylinder (3) is approximately 25 kg (55 lb). Remove bolt (1) and pin assembly (2). Lower the rod end of boom cylinder (3) onto Tooling (A).

This is the sample of the manual

Click on the download link for complete Manual

Illustration 3

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2. Disconnect harness assemblies (4) and (5). Remove cable straps (6).

Illustration 4

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3. Remove clip (7). Disconnect hose assemblies (8).

Illustration 5

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