Good morning, here is the info you requested:
All NV T350 (A-578) transaxles are equipped with a fill plug. The fill plug is located on the left side of the transaxle differential area. The fluid level should be within 3/16 inch from the bottom of the transaxle fill hole (vehicle must be level when checking)
All NV T350 (A-578) transaxles are equipped with a drain plug. The drain plug is located on the lower right side of the transaxle differential housing.Tighten drain plug to 28 N·m (250 in. lbs.)
Dry fill lubricant capacity is approximately 1.9-2.2 liters (4.0-4.6 pints) Wipe the outside of the transaxle if any lubricant spills.
Let me know if you need more help or have more questions.