Caterpillar cat 301.5 mini hydraulic excavator (prefix mnh) service repair manual (mnh00001 and up)

Service Repair Manual
Models
301.5 Mini Hydraulic Excavator

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Product: MINI HYD EXCAVATOR
Model: 301.5 MINI HYD EXCAVATOR MNH
Configuration: 301.5 Mini Hydraulic Excavator MNH00001-UP (MACHINE) POWERED BY C1.1 Engine
Disassembly and Assembly
301.5,301.6,301.7,301.8,302 Mini Hydraulic Excavator Machine Systems
Media Number -M0092231-00 Publication Date -01/09/2018 Date Updated -11/09/2018
i07496157
Hydraulic System Pressure - Release
SMCS - 5050-553-PX
Personal injury or death can result from sudden machine movement.
Sudden movement of the machine can cause injury to persons on or
near the machine.
To prevent injury or death, make sure that the area around the machine
is clear of personnel and obstructions before operating the machine.
Coolant System
Pressurized system: Hot coolant can cause serious burn. To open cap,
stop engine, wait until radiator is cool. Then loosen cap slowly to relieve
the pressure.
To relieve the pressure from the coolant system, turn off the machine. Allow the cooling system
pressure cap to cool. Remove the cooling system pressure cap slowly to relieve pressure.
Hydraulic System
1/2301.5 Mini Hydraulic Excavator MNH00001-UP (MACHINE) POWERED BY C1.1 ...
2020/4/18https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the
engine has been stopped. Serious injury can be caused if this pressure is
not released before any service is done on the hydraulic system.
Make sure all of the attachments have been lowered, oil is cool before
removing any components or lines. Remove the oil filler cap only when
the engine is stopped, and the filler cap is cool enough to touch with
your bare hand.
1. Lower the work tools to the ground.
2. Shut off the engine.
3. Turn the key to the ON position before moving the joysticks.
4. Move the joysticks through the full range of travel. This will relieve any pressure that may
be present in the hydraulic system.
5. Slowly loosen the filler cap to release the pressure in the hydraulic tank.
6. Tighten the filler cap.
7. The pressure in the hydraulic system has been released. Lines and components can be
removed.
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All Rights Reserved.
Private Network For SIS Licensees.
Sat Apr 18 22:50:27 UTC+0800 2020

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i07496165
System Pressure - Release
SMCS - 4000-553-PX; 4050-553-PX; 4350-553-PX; 5050-553; 5050-HR; 5050-553-PX; 6333-
553-PX; 6700-553-PX
Personal injury or death can result from sudden machine movement.
Sudden movement of the machine can cause injury to persons on or
near the machine.
To prevent injury or death, make sure that the area around the machine
is clear of personnel and obstructions before operating the machine.
Coolant System
Pressurized system: Hot coolant can cause serious burn. To open cap,
stop engine, wait until radiator is cool. Then loosen cap slowly to relieve
the pressure.
To relieve the pressure from the coolant system, turn off the machine. Allow the cooling system
pressure cap to cool. Remove the cooling system pressure cap slowly to relieve pressure.
Hydraulic System

Make sure all of the attachments have been lowered, oil is cool before
removing any components or lines. Remove the oil filler cap only when
the engine is stopped, and the filler cap is cool enough to touch with
your bare hand.
1. Lower the work tools to the ground.
2. Shut off the engine.
3. Turn the key to the ON position before moving the joysticks.
4. Move the joysticks through the full range of travel. Moving the joysticks will relieve any
pressure that may be present in the hydraulic system.
5. Slowly loosen the filler cap to release the pressure in the hydraulic tank.
6. Tighten the filler cap.
7. The pressure in the hydraulic system has been released. Lines and components can be
removed.
Sat Apr 18 22:51:23 UTC+0800 2020

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i07397609
Blade Cylinder - Remove and Install
SMCS - 7562-010-BG
Removal Procedure
Cylinders equipped with lock valves 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.
Make sure all of the work tools have been lowered to the ground, and
the oil is cool before removing any components or lines. Remove the oil
filler cap only when the engine is stopped, and the filler cap is cool
enough to touch with your bare hand.

Illustration 1 g06310133
1. Remove cover (1).
2. Disconnect hose assemblies (2) and (3) from blade cylinder (4).

3. Remove pin assemblies (5) and (6). Remove blade cylinder (4).
Installation Procedure
1. Install blade cylinder (4) in the reverse order of removal procedure.
Sat Apr 18 22:52:20 UTC+0800 2020

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i07362008
Blade Cylinder - Disassemble
SMCS - 7562-015-BG
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 152-4251 Cylinder Repair Bench 1
B 1P-2853 Spanner Wrench 1
C 280-2060 Offset Spanner Wrench 1
D
8H-8539 1 5/8" Socket 1
5P-3588 Adapter 1
Start By:
a. Remove blade cylinder.

1. Remove seals (1) from barrel end of blade cylinder (2). Remove seals (3) from rod end of
blade cylinder (4).
2. Mount blade cylinder (5) into Tooling (A).

3. Use Tooling (B) to loosen cylinder nut (6).
4. Remove cylinder nut (6) from the barrel. Place support under barrel end of cylinder (5).

5. Back the cylinder bench out to remove rod end (9) from the cylinder barrel. Remove set
screw and ball (7) from piston (8).
6. Use Tooling (D) to remove piston (8).
7. Remove cylinder nut (6) from rod end (9).

8. Remove bushing (10). Remove outer seal (11), inner seal (12), and O-ring seal (13).
9. Remove O-ring seal and backup ring (14). Remove O-ring seal (15).

10. Remove seal (16) and spacer (17).
Sat Apr 18 22:53:17 UTC+0800 2020

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i07366569
Blade Cylinder - Assemble
SMCS - 7562-016-BG
Assembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 152-4251 Cylinder Repair Bench 1
B 1P-2853 Spanner Wrench 1
C 280-2060 Offset Spanner Wrench 1
D
8H-8539 1 5/8" Socket 1
5P-3588 Adapter 1

1. Install seal (16) and spacer (17).
2. Install O-ring seal and backup ring (14). Install O-ring seal (15).
3. Install bushing (10). Install O-ring seal (13). Install inner seal (12), and outer seal (11).

4. Install cylinder nut (6) onto rod end (9). Apply oil on seals and rod end for assembly.
5. Mount the rod end onto Tooling (A).
Install piston (8). Use Tooling (D) to tighten piston (8). Tighten piston (8) to a torque of
400 ± 20 N·m (295 ± 15 lb ft).

Install ball and set screw (7). Tighten set screw (7) to a torque of 17 ± 2 N·m
(150 ± 18 lb in). Stake set screw in place once torque is applied.
6. Mount barrel end of cylinder (5) on Tooling (A).
Align barrel assembly (5) and the rod assembly for installation. Apply hydraulic oil inside
barrel assembly and on piston (8).
Install the piston and rod assembly inside the barrel assembly.

7. Install cylinder nut (6) into barrel assembly (5). Apply hydraulic oil to seals before
installation.
Use Tooling (C) to tighten cylinder nut (6) to a torque of 226 N·m (167 lb ft).

8. Install seals (1) into barrel end of blade cylinder (2). Install seals (3) into rod end of blade
cylinder (4).
End By:
a. Install blade cylinder.
Sat Apr 18 22:54:14 UTC+0800 2020

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i07397606
Blade - Remove and Install
SMCS - 6060-010
Removal Procedure
Start By:
a. Remove blade cylinder
1. Place suitable blocking under blade assembly. Remove bolts (1) and pin assemblies (2).

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2. Attach strap and a suitable lifting device around blade assembly (3). The weight of blade
assembly (3) is approximately 68 kg (150 lb). Remove blade assembly (3).
1. Install blade assembly (3) in the reverse order of removal.
End By:
a. Install blade cylinder
Sat Apr 18 22:55:10 UTC+0800 2020

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i07394729
Bucket - Remove and Install
SMCS - 6001-010; 6101-010
Removal Procedure
1. Lower bucket to the ground.
1. Remove retainer bolts (1).

2. Remove pins (2) from bucket linkage and stick. Remove bucket (3).
1. Position the stick over the bucket (3). Install pins (2) through the bucket linkage and the
stick.

Caterpillar cat 301.5 mini hydraulic excavator (prefix mnh) service repair manual (mnh00001 and up)

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Caterpillar cat 301.5 mini hydraulic excavator (prefix mnh) service repair manual (mnh00001 and up)