Taarup 7420 - Pre-Stretcher; Hydraulics

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Troubleshooting

Pre-stretcher

Hydraulics

Problem Cause Solution Page

Holes in the stretched film The pre-stretcher rollers are

dirty

> Clean the pre-stretcher roll-

ers

The film tears at the lower edge The pre-stretchers are set too

low

> Increase the height of the

pre-stretchers

The film slips along the tilted

surface of the bale

The pre-stretchers are set too

high

> Decrease the height of the

pre-stretchers

Problem Cause Solution Page

Oil flow blockage in the quick-

couplings

• Blocked return coupling > Change the return coupling

Oil heats up • Wrong setting of the valve

block

• Too high oil flow from the

tractor

• Check setting of the valve

block

• Reduce the oil flow to 26 l/

min

• 34

Spool valve unit faulty The spool valve does not move

freely

> Move the spool valve back-

wards and forwards a few

times

> Push the plastic cap at the

end of the magnet