Cleaning, maintenance and repairs
ZG-B
BAG0051.5 02.14
109
Brake shaft bearing, outer and inner
Caution: no grease or oil should be allowed to get into the brakes.
Depending on the model series, the cam bearing for the brakes may
not be sealed.
Only use lithium saponified grease with a dropping point greater than
190 °C.
ECO-Master automatic linkage adjuster
Each time the brake pads are replaced:
1. Remove the rubber stopper cap.
2. Apply grease (80 g) until sufficient clean grease escapes at the
adjusting screw.
3. Slacken the adjusting screw by approximately one turn with a
ring spanner. Actuate the brake lever several times by hand. The
automatic readjustment should function smoothly. Repeat sev-
eral times, as necessary.
4. Refit the stopper cap. Grease again.
Renewing the wheel hub bearing grease
1. Jack up the vehicle securely and release the brakes.
2. Remove the wheels and dust caps.
3. Remove the lynch pin and unscrew the axle nut.
4. Use a suitable extraction device to remove the wheel hub and
brake drum, taper roller bearing and sealing elements from the
axle stub.
5. Label the removed wheel hubs and bearing cages so that you do
not confuse them when refitting.
6. Clean the brakes, check for wear, sound condition and function
and replace worn parts.
The interior of the brake must be kept free from lubricants and
dirt.
7. Thoroughly clean the interior and exterior of the wheel hubs.
Remove all traces of old grease. Thoroughly clean the bearings
and seals (diesel oil) and check for reusability.
Before refitting the bearings, lightly grease the bearing carrier
and then refit all parts in the reverse order. Carefully fit parts with
press fits and pipe bushings so that they are not twisted or dam-
aged.
The bearings, the wheel hub cavity between the bearings and
the dust cap must be smeared with grease before fitting. The
grease should fill approximately a quarter to a third of the space
in the fitted hub.
8. Fit the axle nut and adjust the bearing and brake. Finally, carry
out a function check and an appropriate test run and rectify any
detected faults.
The wheel hub bearing must only be greased with BPW special
longlife grease with a dropping point greater than 190 °C.
The wrong grease or too great a quantity can result in damage.
Mixing lithium-saponified grease with sodium-saponified grease can
result in damage caused by incompatibility.