Volvo Penta AQUAMATIC 280 Workshop Manual page 111

Repair instructions
11a. Sterndrives model 280 and 290 of earlier man-
ufacture:
Install the thick spacer ring (1), the locking washer (2)
and the round nut (3) on the vertical shaft.
NOTE! Install the nut with the even side facing up-
wards. Tighten the nut but don't lock it with the wash-
er. Use a hook spanner wrench.
11b. Sterndrives model 280 and 290 of later manu-
facture and sterndrives model DP:
Install the thick spacer ring and tighten the plastic in-
sert locknut. Use a hook spanner wrench.
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12. Find the "H"-marking on the parting plane of the
lower gear housing. The "H"-stamping in this instance
is 37. Remember, the stamping is in hundreds of mil-
limeters. The nominal "H"-measurement is 277. Add
the "H"-stamping to the nominal dimension of 277. The
sum will be 277.37 mm.
Add:
"H"-Nominal
"H"-Stamping
"H"-Measurement
13. Find the marking on the pinion gear. In this in-
stance the pinion etching is -5. Remember, the etch-
ing is in hundreds of millimeters. This etching is -0.05
mm. The nominal measurement of the pinion gear is
60.00 mm. Subtract the pinion gear etching from the
nominal measurement for a difference of 59.95 mm.
277.00 mm
+00.37 mm
277.37 mm