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TROUBLE SHOOTING
Pump continually cycles.
• Checkfor emptymaterial supply.Disconnect theair (fromthe pump)
replenish material supply.
• Check to see if the connecting rod has disassembled from the mat-
ing rod. See assembly of lower pump end (figure 3).
• The (48) ball may be wedged orsticking open in the foot valve body.
NOTE: Replace the ball or the foot valve if either are damaged.
• Check for worn or damaged (39) upper piston.
Material on one stroke only (fast downstroke).
• The ball in the foot valve may not be checking or sealing properly.
Remove theballfrom footvalve andinspect.If theball orfoot valveis
damaged replace with new parts. If the ball or foot valve is not dam-
aged, thoroughlycleanboth partsand reassemble(See lowerpump
end instructions).
Material on one stroke only (fast upstroke).
• Checkfor worn or damaged (44) lower materialpiston. Replace pis-
ton (See lower pump end instructions). See Figure 6.
Material leakage out the top of the pump body.
• Check for worn or damaged (39) upper piston. See lower pump end
instructions and replace the upper piston.
• Remove (48) ball from the (49) foot valve body. Thoroughly clean
and replace (see figure 6).
Air leakage out of the exhaust holes. (See Air Motor Instructions)
• Check to see if the (9) valve plate isloose or has disassembled from
the (11) valve spacer.
• Check for worn or damaged (10) piston assembly.
• Check for worn or damaged (19) “O” ring.
• Check for worn or warped (9) valve plate.
• Worn or damaged (14) “O” ring. Replace (14) “O” ring.
OPTIONAL ACCESSORIES
61113 MOUNTING BRACKET
640081-B STRAP WRENCH
Figure 7