Maintenance
71
Maintenance inter-
vals
Before doing any maintenance, the following must be obtained:
•
Clean the machine before doing any repair work
•
Never work on the machine while it is running
•
The tractor engine must be switched off and the ignition key must
be removed
•
Clean the machine with a compressor
Af
te
r the
first
work
in
g hour
After
the first 8 working hours
Af
te
r th
e first
50 wo
rking ho
urs
Ever
y 10 working ho
urs
Ever
y 15 working ho
urs
Ever
y 50 working ho
urs
Eve
ry 15
0 wor
k
ing hour
s
Eve
ry 20
0 wor
k
ing hour
s
Ever
y we
ek
Once
p
e
r
se
aso
n
Grea
se
Oi
l
Check
Tight
en
Cha
nge
Page
Attaching elements
Screwing bolts tighter
• •
•
• •
72
Special torques
• •
•
• •
72
Pre-stretcher
Checking the pre-stretcher rollers
•
•
• •
74
Wheels/tyres
Tyre pressure
•
•
•
75
Hydraulics
Hydraulic hoses
76
Filter hydraulic block
•
•
76
Filter hydraulic block
•
•
76
Table
Drive chain tension
•
•
77
Table lock adjustment
77
Applicutter
Applicutter knife replacement
•
78
Catch rod adjustment
78
Cutting time adjustment
79
Lubrication
Motor gear
•
•
80
Gear ring
•
•
80
Table roller drive chain
•
•
•
80
Table sprocket
•
•
81
Tipping frame hinges
•
•
81
Loading arm hinge
•
•
81
Loading arm cylinder
•
•
81
Wheel hubs
•
•
82
Wheel arm right
•
•
82
Applicutter
•
•
82
Catch rod applicutter
•
•
82
Pre-stretcher gears
•
•
83
Summary of Contents for 7420
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