Volvo FM-9 (EU)
Transfer case fluid capacity & service interval
Volvo FM-9 (EU) transfer case fluid capacity is 5,5 liters. Service intervals include 180000 km/12 months and 10000 km/1 month. The data covers 4 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| FM 9-340 Euro 4/5 4x4, D9B (2006-2009) |
|
| FM 9-340 Euro 4/5 4x4, D9B (2006-2009) |
|
| FM 9-380 Euro 4/5 (4x4), D9B (2006-2009) |
|
| FM 9-380 Euro 4/5 (4x4), D9B (2006-2009) |
|
Additional Notes
- The transfer case fluid capacity for the Volvo FM-9 (EU) is 5.5 liters across all four configurations listed, covering both the FM 9-340 and FM 9-380 variants with the D9B engine in 4x4 drivetrain layout for the 2006-2009 model years.
- A 5.5-liter capacity in a transfer case of this class reflects a substantial unit designed for heavy-duty torque distribution between axles, as is typical in commercial truck all-wheel-drive applications.
- Under normal use conditions, the transfer case fluid change interval is set at 180,000 km or 12 months, whichever comes first, for both the FM 9-340 and FM 9-380 configurations.
- An initial service interval is specified separately for both variants, requiring a fluid change at 10,000 km or 1 month. An early change at this stage is standard practice to flush out metal particles and manufacturing residues that accumulate during the break-in period of a new or rebuilt transfer case.
- The FM 9-340 and FM 9-380 share identical transfer case fluid capacities and service intervals despite differing in engine output rating, indicating the same transfer case unit is used across both power variants of the D9B-equipped 4x4 models.