SECTION 6 - AIR SYSTEM SERVICE
PROBLEM POSSIBLE CAUSES POSSIBLE SOLUTIONS
page 6-4
Lines are plugged - outside
(longest) lines only.
1. Line length differences are too
great.
2. Hoses make too many sharp
turns.
3. Hoses attached to weak supply
on manifold.
4. Unbalanced air flow (double
shoot system).
1. Remove excess length, or add
length to shortest lines.
2. Reroute to minimize corners.
3. Connect longest hoses toward
center of manifold.
4. See items above.
Final lines are plugged - just
outside of headers.
1. Insufficient product velocity
because lines are level or
sloping upwards.
1. Hoses from header should
slope downward.
Restriction in the header. 1. Product buildup.
2. Lumps lodged in the header.
3. Header assembly inserts
rotated.
4. Header assembly air hoses
inserted too far.
1. Inspect frequently. Clean as
required.
2. Dislodge. Use clean product.
Use debris screens.
3. Service and readjust the
secondary header.
4. Service and readjust the
secondary header.
Insufficient air velocity. 1. Discharge is blocked. 1. Clear lines at the seed boot.
Boots too restrictive.
Uneven product division. 1. Header ring loose or worn.
2. Riser tube not vertical.
1. Service and readjust the
secondary header.
2. Service and readjust the
secondary header.
Final line is plugged - between
header and opener.
1. Opener is plugged.
2. Hose is crimped.
1. Clear blockage in the seed
opener.
2. Repair damaged hose.
Seed openers are plugging. 1. Lumps of product are lodging
in the opener.
1. Clear all product buildup in the
seed opener.
Dirt or mud entering the opener. 1. Backing or turning with
openers in the ground.
2. Wet clay wrapping up behind
soil opener.
1. Lift seeding tool out of the
ground when turning.
2. Change openers; or operate in
drier conditions.
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