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Maintenance
8 308777L
Maintenance
The accessory air line oiler (D) provides automatic air motor lubrication. For daily manual lubrication, disconnect the
air hose, place about 15 drops of light machine oil in the air inlet, reconnect the hose, and turn on the air supply to
blow oil into the motor.
Troubleshooting
Before servicing this equipment always make sure to
relieve the pressure, see Pressure Relieve Procedure,
page 7.
NOTE: Check all possible problems and solutions
before disassembling the pump.
* Follow the Pressure Relief Procedure (page 7) and disconnect the fluid line. If the pump starts when the air is
turned back on, the fluid line, hose, valve, etc., was clogged.
Problem Cause Solution
Pump fails to operate Inadequate air supply pressure or
restricted air lines
Increase air supply; clear
Closed or clogged valves Open; clear
Clogged fluid lines, hoses, valves,
etc.
Clear*
Damaged air motor Service air motor
Exhausted fluid supply Refill and reprime, or flush
Continuous air exhaust Worn or damaged air motor gasket,
packing, seal, etc.
Service air motor
Erratic pump operation Exhausted fluid supply Refill and reprime, or flush
Held open or worn intake valve or
piston packings
Clear; service
Pump operates, but output low on
upstroke
Held open or worn piston or pack-
ings
Clear; service
Pump operates, but output low on
downstroke
Held open or worn intake valve Clear; service
Pump operates, but output low on
both strokes
Inadequate air supply or restricted
air line
Increase air supply; clear
Closed or clogged valves Open; clean
Exhausted fluid supply Refill and reprime or flush
Clogged fluid lines, hoses, valves,
etc.
Clear*
Packing nut too tight Loosen
Loose packing nut or worn packings Tighten; replace