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Ring Gear 4

This document provides service information for replacing the swing ring gear inner seal on EC480D L Volvo models with specific serial number ranges. The procedure requires approximately 9.5 hours and includes detailed steps for removal, cleaning, and installation of the seal, along with adhesive application instructions. Proper cleaning and curing of the adhesive are emphasized to ensure effective installation.

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40 views3 pages

Ring Gear 4

This document provides service information for replacing the swing ring gear inner seal on EC480D L Volvo models with specific serial number ranges. The procedure requires approximately 9.5 hours and includes detailed steps for removal, cleaning, and installation of the seal, along with adhesive application instructions. Proper cleaning and curing of the adhesive are emphasized to ensure effective installation.

Uploaded by

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

Document Title: Function Group: Information Type: Date:


Swing ring gear inner seal, 492 Service Information 08/05/2025
replacing
Profile:
EC480D L Volvo

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Swing ring gear inner seal, replacing


Showing Selected Profile

Valid for serial numbers


Model Production site Serial number start Serial number stop
EC480D L Volvo Changwon 270001 271616
EC480D L Volvo Changwon 280001 280113

Op nbr 492-032

Total procedure time (hr): 9.50

1. Remove the superstructure. See Superstructure, removing.


A number is wire rope (cable) (1), superstructure (2) and undercarriage (3).

Figure 1
Removal, superstructure

2. Remove the inner seal attached to the machine with a (-) screwdriver.
Figure 2
Removal, inner seal

1. Inner seal
2. Inner race
3. Outer race

3. Remove the impurities (grease, dirt, bond, etc.) around seal groove and clean seal groove.
NOTE!
If impurities remain, adhesion with bond agent is not good.

Clean the seal groove and around seal groove with cleaning solvent on a soft pad.
Finally clean the seal groove and around seal groove with a dry pad.

4. Clean the new seal surface with a clean pad.

5. Apply instant bond to inner seal groove.


NOTE!
ThreeBond #1735

6. Install seal with seal lip against outer race. Start about 76 mm (3 inch) from end of seal using a blunt instrument to force
seal into groove. Push seal in direction of portion already installed to avoid stretching.
Before bringing ends of seal together, cut off excess length.

Figure 3
Cut, seal

7. Apply adhesive to both ends of seal. Push ends into seal groove making sure they come together.
Finally, apply the bond agent to the seal and all contact parts of seal groove additionally.
Figure 4
Applying, adhesive (A)
NOTE!
To avoid pulling seal out of groove, adhesive must cure for at least 24 hours before using swing function.

ThreeBond #1735

8. Install the superstructure. See Superstructure, installing.

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