The document provides instructions for removing and installing various track components on a 305.5E Mini Hydraulic Excavator, including the front idler, recoil spring, hydraulic track adjuster, and sprocket. The procedures involve using lifting devices to handle heavy components, compressing recoil springs with special tools, and installing/removing seals, bolts, and brackets. Personal protective equipment is recommended when working with compressed springs.
2. Shutdown SIS
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Product: MINI HYD EXCAVATOR
Model: 305.5E MINI HYD EXCAVATOR FKY
Configuration: 305.5E Mini Hydraulic Excavator FKY00001-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
i04777978
Front Idler, Recoil Spring and Hydraulic Track Adjuster -
Remove
SMCS - 4157-011; 4158-011; 4159-011
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 140-7742 Sleeve 1
Start By:
a. Remove the track.
Illustration 1 g01229442
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3. 1. Attach Tooling (A) and a suitable lifting device to the front idler, the recoil spring, and
hydraulic track adjuster (1). The weight of front idler, recoil spring, and hydraulic track
adjuster (1) is approximately 80 kg (175 lb). Remove the front idler, the recoil spring, and
hydraulic track adjuster (1).
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4. Shutdown SIS
Previous Screen
Product: MINI HYD EXCAVATOR
Model: 305.5E MINI HYD EXCAVATOR FKY
Configuration: 305.5E Mini Hydraulic Excavator FKY00001-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
i06748710
Recoil Spring - Remove and Install
SMCS - 4158-010
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A
1P-0775 Seal Guide 1
1P-0510 Driver Gp 1
Start By:
a. Remove the front idler, recoil spring, and hydraulic track adjuster.
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6. Illustration 3 g01181601
Illustration 4 g01181718
View from bottom
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. Position cylinder assembly (1) into a suitable press. Compress recoil spring (4) with Tooling
(A) and a suitable press. Remove nut (5) and slowly release the spring tension. Remove
support (6) and recoil spring (4).
Installation Procedure
Table 2
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7. Required Tools
Tool Part Number Part Description Qty
A
1P-0775 Seal Guide 1
1P-0510 Driver Gp 1
Illustration 5 g01181601
Illustration 6 g01181718
View from bottom
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8. Illustration 7 g01181825
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.
1. Position cylinder assembly (1) and support (6) into a suitable press. Compress recoil spring
(4) with Tooling (A) and the suitable press. Compress recoil spring (4) so that dimension
(X) is approximately 251 ± 1.5 mm (10 ± 0.060 inch). Install nut (5) and slowly release the
spring tension.
Illustration 8 g02817536
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9. Illustration 9 g02817498
2. Install cotter pin (3).
3. Install hydraulic track adjuster assembly (1). Install front idler assembly (2).
End By:
a. Install the front idler, recoil spring, and hydraulic track adjuster.
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10. Shutdown SIS
Previous Screen
Product: MINI HYD EXCAVATOR
Model: 305.5E MINI HYD EXCAVATOR FKY
Configuration: 305.5E Mini Hydraulic Excavator FKY00001-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
i04712671
Front Idler - Remove and Install
SMCS - 4159-010
Removal Procedure
Start By:
a. Remove the front idler, recoil spring, and hydraulic track adjuster.
Illustration 1 g02817399
1. Remove bolts (1). Use two people in order to remove idler assembly (2). The weight of idler
assembly (2) is approximately 34 kg (75 lb).
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11. Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A - Loctite 271 1
Illustration 2 g02817399
1. Use two people in order to position idler assembly (2). The weight of idler assembly (2) is
approximately 34 kg (75 lb). Apply Tooling (A) to bolts (1) and install bolts (1).
End By:
a. Install the front idler, recoil spring, and hydraulic track adjuster.
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12. Shutdown SIS
Previous Screen
Product: MINI HYD EXCAVATOR
Model: 305.5E MINI HYD EXCAVATOR FKY
Configuration: 305.5E Mini Hydraulic Excavator FKY00001-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
i04717529
Hydraulic Track Adjusters - Remove and Install
SMCS - 4157-010
Removal Procedure
Start By:
a. Remove the front idler, recoil spring, and hydraulic track adjuster.
Illustration 1 g02821516
1. Remove piston assembly (1) from the cylinder assembly.
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13. Illustration 2 g02821556
2. Remove seal (3), O-ring seal (4), and backup ring (5) from cylinder assembly (2).
Illustration 3 g02821717
3. Remove bolt and bracket (6). Remove valve (7) from piston assembly (1).
4. Repeat Step 1 through Step 3 for the opposite side.
Installation Procedure
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14. Illustration 4 g02821717
1. Install valve (7), bolt, and bracket (6) to piston assembly (1).
Illustration 5 g02821556
2. Install backup ring (5), O-ring seal (4), and seal (3) to cylinder assembly (2).
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15. Illustration 6 g02821516
3. Install piston assembly (1) to cylinder assembly (2).
4. Repeat Step 1 through Step 3 for the opposite side.
End By:
a. Install the front idler, recoil spring, and hydraulic track adjuster.
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17. Shutdown SIS
Previous Screen
Product: MINI HYD EXCAVATOR
Model: 305.5E MINI HYD EXCAVATOR FKY
Configuration: 305.5E Mini Hydraulic Excavator FKY00001-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
i04778017
Front Idler, Recoil Spring and Hydraulic Track Adjuster -
Install
SMCS - 4157-012; 4158-012; 4159-012
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 140-7742 Sleeve 1
Illustration 1 g01229442
1. Attach Tooling (A) and a suitable lifting device to the front idler, the recoil spring, and
hydraulic track adjuster (1). The weight of front idler, recoil spring, and hydraulic track
adjuster (1) is approximately 80 kg (175 lb). Install the front idler, the recoil spring, and
hydraulic track adjuster (1).
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18. End By:
a. Install the track.
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19. Shutdown SIS
Previous Screen
Product: MINI HYD EXCAVATOR
Model: 305.5E MINI HYD EXCAVATOR FKY
Configuration: 305.5E Mini Hydraulic Excavator FKY00001-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
i04713070
Sprocket - Remove and Install
SMCS - 4164-010
Removal Procedure
Start By:
a. Remove the track.
Illustration 1 g02817696
1. Remove bolts (1) and sprocket (2).
Installation Procedure
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