Glastron has built sporty bowriders for generations, and in the later years many came standard on the Volvo Penta SX drive, though some run MerCruiser. The Volvo SX shifts with a cone clutch and is serviced differently from a MerCruiser, and Brad is one of the techs who knows both. He repairs and rebuilds the drive under a Glastron: seals, bearings, gimbal, bellows, the Volvo shift, cooling and full rebuilds. Ship the drive in nationwide or drop it off in Central New York.
Glastron sterndrive problems
- Water in the gear oil from a Volvo SX seal leak
- Gimbal bearing growl at the transom in gear
- Cone clutch shift trouble on the Volvo drive
- Overheating from a worn impeller or cooling restriction
- Cracked Volvo bellows letting water aboard
- Whine or clunk from gear wear on a high-hour drive
What Brad checks on a Glastron drive
- Confirm the drive, Volvo Penta SX or a MerCruiser unit
- Pressure and vacuum test for the leak path
- Inspect the Volvo cone clutch and shift mechanism
- Check the gimbal bearing, u-joints and Volvo bellows
- Verify the water pump and cooling flow
- Read the gear oil and inspect the anodes
The fix and what to expect
Brad confirms whether the Glastron runs a Volvo SX or a MerCruiser drive, then repairs the fault with the right parts, or rebuilds the drive when wear runs deep, and pressure tests it. On the common Volvo SX, getting the cone clutch shift and the bearing preload right is what the drive needs to run quiet and shift clean. Single repairs turn around fast, rebuilds in one to two weeks from arrival, with the price set after teardown.
Most Glastrons run the Volvo SX, so shift diagnosis matters
The Volvo Penta SX that sits under so many later Glastrons is a good drive, but it shifts with a cone clutch instead of clutch dogs, so a Glastron that clunks into gear or hunts for reverse gets diagnosed nothing like a MerCruiser. The SX also uses Volvo-specific bellows and a bearing carrier that a MerCruiser tech may not stock. Brad keeps Volvo tooling, bellows and shim stock on hand and sets the cone clutch up by the book, which is exactly what a Volvo-equipped Glastron needs to come back right.