McHale
991 High Speed
Round Bale Wrapper
66
10.10 Chain adjustments
It is important for the efficient operation of the machine that all drive chains are kept
correctly tensioned. The following is a general guide to chain adjustment.
The sag is measured at the midpoint of the chain between the sprockets. Always
ensure one side of the chain is tight so that the correct reading is obtained. Even though
some drives differ in detail the basic adjustments stay the same.
10.10.1 Table drive chain
After a period of time, it may become necessary to readjust the drive chain.
To adjust go through the following procedure:
1.
Tip up the wrapper table and fit the safety bar securely
2.
Stop the tractor/power unit and ensure that it cannot be restarted, while
working on the machine.
3.
Loosen the 4 x M16 bolts holding on the motor plate
4.
Turn the M16 nyloc nut to adjust the chain. There should be 10-13 mm of sag
in the chain.
5.
Tighten the 4 x M16 bolts holding on the motor plate
6.
Remove the table safety lock and lower the table down
WARNING: When performing maintenance, ensure the safety bar
is fitted securely while the table is elevated!
1.
Start the tractor/power unit and elevate the table fully, by operating
the tip up function.
2.
Remove the R-pin and swing the safety bar into position. Secure it
onto the chassis using the R-pin.
3.
Stop the tractor/power unit and ensure that it cannot be restarted,
while working on the machine.
4.
Secure the safety bar back into its storage position, when
maintenance work is complete.
5.
Lower the table by operating the tip down function.