Incorrect Installation of the Seals in Final Drives May Damage the Seals Caterpillar

Incorrect Installation of the Seals in Final Drives May Damage the Seals

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Incorrect Installation of the Seals in Final Drives May Damage the Seals

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TECHNICAL INFORMATION BULLETIN	JUNE 27, 2001
EXCAVATORS	375 (8XG, 8WJ, 6NK), 375 L (6RL, 9WL, 1JM), 5080 (6XK, 8SL) EXCAVATORS
	Component Code(s) 4050, 4052

SUBJECT: INCORRECT INSTALLATION OF THE SEALS IN FINAL DRIVES MAY
DAMAGE THE SEALS

PROBLEM:

The Stabilized Metal Ring (SMR) seal may be damaged during assembly if installed incorrectly. The seals must be properly lubricated during assembly. Severe galling and seizing may occur on the metal face of the seal ring if the seals are installed without the proper lubrication.

SOLUTION:

200-5937 Lubricant is provided with the 188-2103 SMR Seal Group. The lubricant is a Molykote G-N paste in a 42 gm (1.5 oz) tube. The lubricant should be applied whenever the SMR seals are installed in the final drive. Illustration 1 shows the location of the seals in the final drive. Illustration 2 shows the detail of the location for applying the lubricant during installation of the seals.

Illustration 1. Section view of a typical final drive.

JUNE 27, 2001
Component Code(s) 4050, 4052

Illustration 2. Detail A of the SMR seals from Illustration 1.
(1). 188-2130 SMR Seal Group
(B). Surfaces that require the application of the 200-5937
Lubricant before SMR seal installation.

COPYRIGHT 2001 CATERPILLAR
ALL RIGHTS RESERVED

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