Volvo Penta — Preload, checking (reverse gear MS2)
Adjustments · Reverse gear MS2 bearings
From a Volvo Penta service manual — check it applies to your exact model before use.
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Procedure
- Install the slipping clutch and tighten the cover.
- Turn the housing over and install tools 884735 and 884736.
- Turn the shaft both directions to make the bearing seat itself.
- Wind a string round tool 884736 and measure the pre-load with spring balance 9985494.
- Too much pre-load: reduce shim thickness in the upper cover.
- Not enough pre-load: increase shim thickness in the upper cover.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Preload, new bearings: 15-30 N (3.37-6.74 lbf)
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.