Volvo Penta — Rear crankshaft seal, changing (transmission housing, flywheel end)
Repair & overhaul · Crankshaft rear seal (21671)
From a Volvo Penta service manual covering: TAD530GE, TAD531GE, TAD532GE, TAD722GE, TAD730G, TAD732GE, TAD733GE, TD520GE, TD720GE, tAd731GE. Check it applies to your exact model before use.
Applies to: Volvo Penta TAD530GE, Volvo Penta TAD531GE, Volvo Penta TAD532GE, Volvo Penta TAD722GE, Volvo Penta TAD730G, Volvo Penta TAD732GE, Volvo Penta TAD733GE, Volvo Penta TD520GE, Volvo Penta TD720GE, Volvo Penta tAd731GE
Before you start
- The flywheel is very heavy.
Procedure
- Remove the flywheel.
- Remove the crankshaft seal from the transmission housing using tool 999 8672.
- Drill two 3.5 mm holes in the seal through the pre-drilled holes in the tool; max depth 8 mm.
- Screw two self-tapping screws into the drilled holes; max screw length 40 mm.
- Pull out the seal using the screws in the tool, or extractor 885341 with slide hammer 999 6400.
- Lightly oil the sealing lip of the new seal and fit it on tool 999 8672 with the lip facing the crankshaft.
- Use a drift and gently knock the seal into the required position.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Drill depth max 8 mm
- Max screw length 40 mm
Full service-parts list: Volvo Penta TAD730G →, Volvo Penta TD720GE →
Source: Volvo Penta service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.