Volvo Penta AQUAMATIC 280 Workshop Manual page 42

884387
15. Brace the special tool 884387 in a vice and install
the gear housing in the tool.
16. Install the preassembled double bearing box with
0.4 mm (0.016") shims.
NOTE! The guide pin (1) in the double bearing box
must be turned to face downwards and pressed into
the corresponding groove in the clamp ring. Special
tool 884483 is still being used.
17. Install the clamp ring and the cover with sufficient
number of shims to ensure a proper compression of
the bearings. There must be a clearance (1) between
the housing and the clamp ring. See also the picture
under point 19.
18. Install a dial indicator to measure backlash. The
correct backlash should be 0.15–0.25 mm (0.006–
0.010"). Should the backlash be too small, more
shims must be added between the double bearing box
and the gear housing. If the backlash is excessive,
shims must be removed. A shim thickness of
0.10 mm (0.004") is a safe adjustment value.
Repair instructions
39