Volvo Penta SX and DP drives run their own bellows between the transom and drive, and like any sterndrive the boots crack with age and let water into the boat and onto the gimbal bearing. The catch on a Volvo is that the bellows, clamps and seating are Volvo-specific, not MerCruiser parts that look close. Brad replaces the correct Volvo bellows set and inspects the gimbal bearing while the drive is off. Mail it in or drop it off in Central New York.
Volvo Penta bellows symptoms
- Bilge water showing up only with the drive in gear or underway
- Cracks and dry rot in the folds of the Volvo boots
- Gimbal bearing growl from water past a split bellows
- A soft or collapsed exhaust bellows
- Water intruding through the drive on a hose test
- Bellows several seasons old and never changed
What Brad checks on a Volvo re-bellows
- Inspect all Volvo bellows for cracks, rot and clamp condition
- Check the gimbal bearing behind the driveshaft bellows
- Look at the u-joints and driveshaft while open
- Verify the Volvo shift components and boot
- Check the gimbal housing and transom seals
- Seat the correct Volvo bellows and clamps to spec
The fix and what to expect
Brad replaces the Volvo bellows set with correct Volvo parts and new clamps, services or replaces the gimbal bearing while the drive is off, and water tests the drive before it goes back. Using genuine Volvo bellows and seating them the Volvo way is what keeps the repair from leaking. Fresh bellows on a four to five year cycle keep a Volvo drive dry and the bearing alive. Turnaround is quick once parts are in hand and the price is known up front.
Volvo bellows are not interchangeable with MerCruiser
The recurring mistake on Volvo bellows is a shop reaching for a MerCruiser Alpha bellows kit because it is on the shelf and looks about right. Volvo SX and DP drives use their own bellows profiles, clamp sizes and seating method, and a close-but-wrong boot either will not seal or tears early. Brad orders against the exact Volvo drive so the set fits and seats the way it should. On a Volvo that attention is the difference between a re-bellows that lasts years and one that is weeping again by the next haul-out.