Driving unit/gear – 2550

Replacing the drive axle jointing ring

6.3.2 Assembly

Assembly of the gear unit after replacement of the drive axle jointing ring is done in reverse.

Pay special attention to the following during assembly:

•Fill the jointing ring with grease after setting it on the drive axle.

•Ensure that only undamaged spacing washers of equal total thickness as the original spacers are set on the drive axle.

•Press on the bearing on the drive axle, making sure not to damage the bearing spacing washers.

•During assembly of the drive axle with attached bearing, spacing washers and jointing ring, make sure the placement of the axle wedges coincide with the crown wheel wedges and that the bearing and jointing ring are properly positioned on the axle prior to pressing the axle into the final position.

•Place the spacer ring on the drive axle end and then screw on the axle nut. Be sure to always use a new nut. Tighten the axle nut to a torque of 400 Nm, and lock it with one centre punch in the middle. Lubricate the drive axle nut prior to setting it on the axle.

•Replace the O-ring before mounting the lower cover. Make sure it is not damaged. Fit the cover and tighten the bolts to a torque of 25 Nm. Lubricate the bolts prior to mounting. Fill with oil according to the oil filling instructions.

Fit the drive wheel and tighten the wheel nut to a torque of 90 Nm. Lubricate the wheel nut prior to mounting.

Driving unit/gear – 2550

Replacing the wheel bolt

6.4 Replacing the wheel bolt

The wheel bolts on the gear unit are so-called pin bolts. To replace a wheel bolt, proceed as follows:

•Disconnect the battery connector.

•Lift the machine using a lift jack and properly secure it using trestles and wooden blocks.

•Remove the drive wheel.

•Wheel bolts with damaged threads can be removed using the pin bolt tool.

•Broken wheel bolts:

• Method 1: Drill a hole in the centre of the bolt and unscrew the bolt using an M14 bolt removal tool.

• Method 2: If the bolt cannot be removed with the bolt removal tool, then drill it out.

-Make one centre punch in the bolt centre. Pay attention to correct centring of the punch.

-Pre-drill a hole through the bolt using a 5 mm drill steel. Drill out the bolt using an 11.5 mm drill steel.

-Try to remove the bolt remains using pliers, etc. If this is not possible, remove the bolt remains by cleaning the thread with an M14x1.5 thread tap.

•Apply a string of LOCTITE 270 onto the wheel bolt thread. Fit the new wheel bolt using the pin bolt tool. Tightening torque 90 Nm.

•Fit the drive wheel. Tighten the wheel nuts to a torque of 90 Nm.

•Remove the trestle or wooden blocks and lower the truck to the ground.

•Reconnect the battery connector.