Stiga MP 84/98 Workshop Manual page 17

WORKSHOP MANUAL
MP 84/98 - MP 84/98 Hy
General informations
This chapter covers the main aspects of a servic­
ing procedure and the general rules for guaran­
teeing a successful service which respects the
safety of the machine.
Related topics
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Map of functional units
PRACTICAL HINTS
A) Fitting snap rings
One side of the "Benzing" snap rings (1) has a round-
ed edge and the other a sharp edge.
For maximum grip the rounded part needs to be fa-
cing towards the element to be held (2), with the sharp
edges on the outside.
1
2
B) Joint pivot pins
There are a large number of pivot pins, usually con-
nected to rods, that need to be able to move in va rious
directions.
CHAPTER REVISION
2.4
A typical situation has the pin (3) fixed by a self-lock-
ing nut (4) with two anti-friction washers (5) in be tween
the pin (3) and the support element, and be tween this
and the nut (4).
Since these are joints, the nut must never be tighte-
ned completely but only so much that it can ensure the
free rotational movement of the pin on its axis wi thout,
how ever, creating excessive free play which could re-
sult in the parts concerned becoming mi saligned and
failing to work correctly.
3
1
5
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