Service Repair Manual
Models
303.5E Mini Hydraulic Excavator
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Product: MINI HYD EXCAVATOR
Model: 303.5E MINI HYD EXCAVATOR RSE
Configuration: 303.5E Mini Hydraulic Excavator RSE00001-UP (MACHINE)
Disassembly and Assembly
303E CR, 303.5E, 304E, 305.5E and 305E Mini Hydraulic Excavators Machine
Systems
Media Number -UENR0148-04
Publication Date -01/10/2016
Date Updated -25/10/2016
i04778099
Swing Motor and Swing Drive - Disassemble
SMCS - 5058-015-ZW; 5459-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number
Part Description
Qty
A
9S-9152
Bearing Puller Gp
1
B
126-7183
Crossblock
1
C
1P-1857
Retaining Ring Pliers
1
D
1P-1859
Retaining Ring Pliers
1
Start By:
a. Remove the swing motor and the swing drive.
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Illustration 1
g01250159
1. Remove bolts (1) and valve assembly (2).
Illustration 2
g01250160
Personal injury can result from being struck by parts propelled by a
released spring force.
Make sure to wear all necessary protective equipment.
Follow the recommended procedure and use all recommended tooling to
release the spring force.
2. Remove plug (3), the O-ring seal, and spring (4).
3. Remove plug (8), the O-ring seal, shim (9), and spring (10).
4. Remove plug (7), the O-ring seal, and spool (6).
5. Remove plug (12), the O-ring seal, and spool (11).
6. Remove O-ring seals (5).
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Illustration 3
g01250161
7. Remove check valve (13) and check valve (14).
Illustration 4
g01250163
8. Remove backup ring (15), O-ring seal (16), backup ring (17), and O-ring seal (18) from
check valve (13).
9. Repeat Step 8 for check valve (14).
Illustration 5
g01250166
10. Remove bolts (19) and head (20).
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303.5E