
McHale
F5400
Baler
75
9.16 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.
The following chains will require an inspection for sagging after the first 500 bales and
must be inspected once per 1,000 bales after that.
9.16.1 Main drive chain adjustment
To adjust all three drive chains, the following tools are required; two 24 mm spanners.
Hold the upper nut and loosen the lower nut. Adjust the upper nut until compression of
spring has reached the same length as spring guide (A). Spring guide (A) is an indicator
only and always inspect chain tightness after adjustment, as greater spring
compression may be required, due to chain wear, chain damage etc. Lock the two nuts
together to secure in place. Perform the procedure for all three tensioners outlined.
Upper
nut
Lower
nut
A