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Technical Tips

Get expert advice from our factory-trained technicians who share a new tech tip every month in the Ground Support e-newsletter.

Proper Method for Checking Transmission Fluid

JLG® telehandler models equipped with the ZF TSC transmission are also equipped with a thermal bypass valve in the cooling circuit to facilitate faster warm-up of the transmission. When the transmission cooling circuit is below operating temperature, this valve may be fully or partially closed, affecting the amount of fluid in the transmission. It is necessary to check the fluid level with the valve fully open to ensure the proper amount of fluid is present in the system. Improper fluid levels can contribute to premature failure of the transmission.

Download the ZF Transmission Fluid Level Check PDF (163KB PDF) for step-by-step instructions.

Please contact your Regional Service Manager or a JLG® service representative if further information is required.

JLG®  Offers a wide range of parts, accessories, tool and supplies to support a safer work environment while still allowing you to get the job done.

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JLG Industries, Inc. is the world's leading designer, manufacturer and marketer of access equipment. The Company's diverse product portfolio includes leading brands such as JLG® aerial work platforms; JLG, SkyTrak® and Lull® telehandlers; and an array of complementary accessories that increase the versatility and efficiency of these products. JLG is an Oshkosh Corporation Company [NYSE: OSK].
An Oshkosh Corporation Company