Man D 2866 LUE 605, Руководство по ремонту

Страница: 129 / 174

Pilot clutch D 2866 LUE 602
127
Dismantle pilot clutch
Removing pilot clutch, see page 67
Remove external bolts
À
.
Clutch can be dismantled into its individual parts.
Clean pilot cluntch
Before assembly clean all clutch parts. No petrol,
kerosene or oil may be used on rubber.
If there is little contamination, i.e. dry, powdery
dust, the clutch parts may be cleaned only with a
dusting brush.
The polished down bearing surfaces of the adja-
cent steel parts for the friction disk and friction ring
(
Á
and
Ã
) should not be damaged.
Score marks on the bearing surfaces can be
smoothed with fine emery paper (grain 400).
In the event of severe contamination, i.e. sticky,
smeared rubber deposits, as arise when the clutch
slips, the steel parts of the clutch can be cleaned
with a cold cleaning agent.
1
2
4
5
6
3
If an element
Ä
cracks in operation the clutch has slipped. In this case control the diameters of friction ring
Ã
and friction disk
Á
.
The wear limits are indicated in the table on page 128.
Pilot clutch - examination and maintenance (general)
The clutch is dismantled in accordance with the corresponding dismantling guides. After the clutch has
been dismantled the friction disk and friction ring can be measured.
Refer to the table for the permissible wear.
The clutch element can be examined for any detachment and incipient cracks by extending it axially under
a press.
The maximum pulling distance must not exceed 1/3 of the entire clutch element height. Any detachment
and incipient cracks are visible in the pulled condition. If there are any the element must be replaced.
The cleaning and assembly is carried out in accordance with corresponding guides to cleaning and assem-
bly.
It is a good idea to keep a stock of the listed clutch elements as spare parts.
The parts must be replaced in the event of the following:
Clutch element
- if any damage is detected
Friction disk and friction ring - if the wear limits in the table are exceeded
Note:
If the rubber element is replaced the friction ring and friction disk must always be renewed to
make sure that the clutch is in new condition.