Yetter 71 Series Planter - Manual (Page 24)

24
LUBRICATION
ROLLER CHAIN LUBRICATION
The most effective roller chain lubrication routine varies, depending on the environmental
conditions and/or conditions of the chain. The obvious goal is to maintain complete
freedom at every chain link joint.
For best results, DO NOT lubricate roller chains if operating in dusty conditions.
Lubrication will only tend to pull additional grit into the critical pivot areas, restring free
chain movement.
If operating in clean and/or moist conditions, lubricate the roller chains with PT508 chain
lube spray (or equivalent) at intervals sufficient to maintain free chain movement.
When roller chains remain unused for several days, moisture in the air will accumulate on
the chain causing the chain to rust. This can and will become serious enough in time to
cause the chain joints to become stiff, restricting their normal free movement. While very
difficult to detect, this stiffness can encourage the chains to operate abnormally and
disturb the smooth rotation of important meter components causing a deterioration in
performance.
If the planter is not to be used for several days, thoroughly lubricate the chains with
PT508 chain lube at the beginning of the idle period. If the roller chains have become
rusty or stiff during the idle period, lubricate prior to continued usage and operate or
“work” the chains sufficiently to insure all chain joints move freely before normal planter
operation is resumed.
SPECIAL LUBRICATNS FOR SEED HOPPERS
IMPORTANT: With plate type hoppers, sprinkle a teaspoon of powdered graphite
over the top of the seed twice a day.