Volvo Penta — Pre-load, checking (propeller shaft)
Adjustments
From a Volvo Penta service manual — check it applies to your exact model before use.
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Procedure
- Check that there is no slack in the propeller shaft.
- Method 1: wind string round the shaft and pull with spring scale 9985494.
- Method 2: install the propeller nut and turn the shaft with a torque wrench at about 1 revolution/sec.
- When there is slack or incorrect pre-load, change the shim thickness under the bearing race in the rear bearing housing.
- If pre-load is correct, disassemble the bearing housing and remove the propeller shaft.
Tools required
- 9985494 Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Permissible preload method 1: 0 (no slack) - 35 N (0-7.87 lbf). Method 2: 0.5 ± 0.3 Nm (0.37 ± 0.22 lbf ft)
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.