Dana Spicer and Meritor
- Clean the shift unit oil fill plug, and the area surrounding
the plug. See Fig.. Turn
the fill plug counterclockwise to remove it.
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Housing Cover Gasket
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Oil Fill Plug
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Shift Unit Housing Cover
Fig. 1, Two-Speed-Axle Shift Unit
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- Insert a finger or pipe cleaner into the fill plug hole and check the fluid level. The lubricant should be level with the bottom of the fill hole. If low, add the recommended lubricant.
- Coat the threads of the fill plug with a small amount of Loctite® 242, or equivalent sealant. Install the fill plug finger-tight in the rear axle shift unit housing. Using a wrench, tighten it an additional 1-1/2 turns.
Important: Also do the appropriate procedure under the heading “All Axle Models.”
Notice: Failure to keep lubricant at the specified level could cause damage to the axle shift unit.
Important: When the ambient temperature is above 0°F (–18°C), use SAE 10 heavy-duty engine oil, API service classification SD (sulfated ash content must not exceed 1.85%). When the ambient temperature is below 0°F (–18°C), use one part kerosene to three parts SAE 10 heavy-duty engine oil, API service classification SD (sulfated ash content must not exceed 1.85%). This cold-weather mixture can be safely used up to 32°F (0°C).
Commercially available automatic transmission fluid may be used in place of SAE 10 engine oil. Automatic transmission fluid can be used for all temperatures; do not mix it with kerosene.
Notice: Before adding additional lubricant, make sure of the type currently in the shift unit. To prevent component damage, do not mix engine oil with automatic transmission fluid.