Shimming the lower gear to the intermediate housing

3. Press the outer race of the vertical shaft bearing with the calculated shims into the intermediate housing. Use special tool 884168

1. Place the bearing race on the bearing and hold in position. Using a depth gauge, measure the bearing height above the lower unit parting plane “A”.

2. Using the depth gauge, measure the measurement

“B” in the intermediate housing .

Subtract measurement “A” from measurement “B”.

B – A = positive result ( clearance dimension)

B – A = negative result (preload)

Tolerances:Max. allowed clearance dimension 0.05 mm (0.002”)

Max. allowed preload 0.02 mm (0.0008”). For calculation of shims see point 37 on page 114.

4. Insert the oil strainer (5) into the lower gear housing. Check that the spacer sleeve (4) is provided with an O-ring. Use new O-rings (3) and (4). Install the spline sleeve (1) on the vertical shaft with the groove in the up position. Coat the contact surfaces with a thin coating of Volvo Penta part no. 1141570-0 sealant.

5. Use new screws and washers. Coat the screw threads with thread locking compound, Volvo Penta part no. 1161053-2, or Loctite® 243.

Tighten the 4 larger screws diagonally and in sequence with a torque wrench to 38 Nm (28 lb.ft.). Use special tool 885008. Tighten the 3 smaller screws to 15 Nm (11 lb.ft.).

280 drives:

Earlier 280 drives do not have washers while later versions do. Both versions of the 280 drive shall always have washers fitted to all bolts between the lower and intermediate housing when overhauling. Tightening torque; see above.

290 drives:

All production 290 drives have washers fitted. Tightening torque; see above.