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Servicing A Freezing Air Motor
When air is compressed and released quickly it creates a cooling
effect. Your TyrFil Flushless Pump is no exception. Under certain
conditions, your air motor could slow down, freeze, or stop com-
pletely. When filling tires through an air/water valve, the pump
operates quicker, taking in and releasing compressed air at a
much greater rate. If enough moisture is present in your air lines,
it will condense and accumulate inside the air motor, freeze and
block the air valves and exhaust ports.
If you develop problems from frosting or freezing, here are a
couple of guidelines you can follow to correct the situation:
1) Install a water filter, part number EQ-F354 (photo 26a), be-
tween the regulator and the air inlet on your Flushless Pump.
Water filters should remove most of the moisture in your system,
but they are not by themselves 100% effective. If you are still
having problems after you have installed a water filter:
2) Install a lubricator, part number EQ-L354 (photo 26b), be-
tween the air motor and the on/off ball valve on the Flushless
Pump. Fill the lubricator with propylene glycol (available at your
local hardware store as RV antifreeze). Adjust the flow rate on
the lubricator to the minimum setting. The glycol will mix with the
moisture inside the air motor and lower the freezing point of the
water to -50º F (-45.5º C). Increase the flow rate if the minimum
setting proves ineffective. This should keep your air motor oper-
ating properly. Never use ethylene glycol in your lubricator, only
use propylene glycol!
Do not use heat lamps on the Flushless Pump. This approach
may seem effective, but excessive heat will damage the air mo-
tor O-ring and could result in a total failure of your pump. If you
have any questions regarding this problem, please call our Tech-
nical Center.
26a - EQ-L354
26b - EQ-F354