Stiga MP 84/98 Workshop Manual page 21

WORKSHOP MANUAL
MP 84/98 - MP 84/98 Hy
Important informations
Characteristics of the original belts
The standard belts on the market have different
characteristics compared to the requirements of
the original spare belts, supplied by the authorised
dealer. The latter are designed and manufactured
in close cooperation with the belt supplier and the
machine manufacturer.
Here are the reasons why it is important to choose
an original belt, useful when making such deci­
sions..
a) Adhesion on the pulley. The
belt rests with the sides inclined
against the walls of the pulley.
There must be a gap between the
belt and the bottom of the groove.
b) Floating pulley on cutting
equipment. The original Power
Take Off (PTO) belt is designed to
work even if the pulleys move up
and down and tilt at the same time.
c) Curvature in two directions.
All the original belts, which work
with tensioning arms acting on the
external side, are equipped with re­
inforcements. The reinforcement is designed spe­
cifically for these specific cases..
TROUBLESHOOTING AND REMEDIES
Problem
Slack belt
Worn or oily belt
The machine moves Broken pulleys
slowly, looses power or
The brake is not adjusted
doesn't move at all
correctly
Hydrostatic unit failure
Pulley splines broken
The machine will not
move in either direction
Hydrostatic unit failure
The machine does not
reach the foreseen Incorrect pedal adjustment
speed in forward drive
1)
Uncertain or ineffective The brake is not adjusted
braking correctly
Insufficient oil level
Hydrostatic unit over-
heating
Clogged oil filter
1)
Slack or worn belt
Irregular fan rotation
Abnormal noise and
vibrations
Incorrect positioning of the by-
pass valve
Loose bolts and screws
Incorrect micro-switch
The machine moves in
adjustment
neutral gear
1)
Slack or worn linkage system
Pushing the machine by
By-pass partially enabled
hand is difficult
1)
The parking brake does
not stop the machine on Incorrect brake adjustment
a 30% slope
Excessive clearance on
Worn bearings
the front wheels
Hydrostatic drive models
1)
[*] Check the transmission unit Manufacturer's Instruction Manual.
CHAPTER
3.2
2. Transmission - Brakes - Wheels
Probable cause
Adjust
Replace
Replace
Check and adjust
Check the Manufacturer's Instruction
1)
Manual.
Replace
Check the Manufacturer's Instruction
1)
Manual.
Adjust
1)
Check and adjust
Top up
1)
Clean and/or replace
1)
Check and/or replace
Check the condition of the fan, that it is
securely fastened in place and that noth-
ing interferes with the rotation movement
Check and adjust
1)
Check and tighten to the prescribed
values
Adjust
1)
Check and/or replace
1)
Check
1)
Adjust
Replace
REVISION FROM ... PAGE
0 2018 2 of 3
Solution
[4.3]
[6.4]
[5.5]
[*]
[4.2]
[*]
[*]
[*]
[4.4]
[4.2]
[*]
[*]
[6.4]
[*]
[*]
[5.6]
[5.6a]
[4.4]
[4.4]
[*]
[4.2]
[6.2]