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Swing Discription

The document provides a detailed description of the swing gearbox for the EC480D L Volvo model, including valid serial number ranges and component specifications. It outlines the assembly structure, including the driving shaft, planetary gear assemblies, and various components with their respective tightening torques. Additionally, it includes diagrams and specifications for assembly and maintenance purposes.

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25 views5 pages

Swing Discription

The document provides a detailed description of the swing gearbox for the EC480D L Volvo model, including valid serial number ranges and component specifications. It outlines the assembly structure, including the driving shaft, planetary gear assemblies, and various components with their respective tightening torques. Additionally, it includes diagrams and specifications for assembly and maintenance purposes.

Uploaded by

yosra2elhofy
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Service Information

Document Title: Function Group: Information Type: Date:


Swing gearbox, description Service Information 08/05/2025
Profile:
EC480D L Volvo

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Swing gearbox, description


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Valid for serial numbers


Model Production site Serial number start Serial number stop
EC480D L Volvo Changwon 270001 274467
EC480D L Volvo Changwon 280001 280568

Model code

Figure 1
Model code

1. Serial No
2. Reduction ratio code
3. Size No. (theoretical output torque)
ex. 100 = 1000 kgf m
4. Type No.
(ex. S = swing gearbox)

Swing gearbox consists of the driving shaft as a group including the 1st planetary gear assembly, the 2nd planetary gear
assembly and the 1st and 2nd sun gear pinions, the housing supporting the driving shaft, and the ring gear including the
planetary gear.
Swing gearbox, sectional view
Figure 2
Swing gearbox, sectional view
1 No.2 planetary gear assembly 18 Retaining ring 34 washer
2 No.2 carrier 19 Case 35 Retaining ring
3 No.2 planetary gear 20 Ring gear 36 Spring pin
4 No.2 pin assembly 21 Dowel pin 37 No.1 sun gear
5 No.2 pin 22 Screw 38 Retaining ring
6 Bushing 23 Plate 39 Level gauge
8 washer 24 Screw 40 Pipe
9 Spring pin 25 Thrust ring 41 Name plate
10 Drive shaft 26 No.2 sun gear 42 Screw
11 Collar 27 Thrust washer 43 Plug
12 Cover 28 No.1 planetary gear assembly 44 Pipe
13 O-ring 29 No.1 carrier 45 Pinion gear
14 Seal 30 No.1 planetary gear 46 Screw
15 Screw 31 No.1 pin 47 Lock washer
16 Bearing 32 Bearing 48 Plate
17 Bearing 33 washer
Figure 3
Swing gearbox

Symbol Thread size and depth Tightening torque


1 69 Nm (141 lbf ft) (7 kg m)
2 57 Nm (141 lbf ft) (5.8 kg m)
3 177 Nm (141 lbf ft) (18 kg m)
4 262 ±26.5 Nm (141 lbf ft) (26.7 ±2.7 kg m)
A, B 1 5/16-12 UN-2B-19 300 Nm (222 lbf ft) (30.6 kg m)
E Rc3/8-14 44 Nm (32.6 lbf ft) (4.5 kg m)
M 1 5/16-12 UN-2B-19 300 Nm (222 lbf ft) (30.6 kg m)
DB 3/4-16 UNF-2B-14.3 82 Nm (60.7 lbf ft) (8.37 kg m)
GI, L Rc3/4-19 69.98 Nm (51.79 lbf ft) (7.10 kg m)
GO – –
PA, PB 9/16-18 UNF-2B-12.7 48 Nm (35.5 lbf ft) (4.9 kg m)
PG, SH 9/16-18 UNF-2B-12.7 48 Nm (35.5 lbf ft) (4.9 kg m)

Inlet port Outlet port View from V


A B Clockwise
B A Counter clockwise

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