Sears 625.34929 - Manual (Page 16)

LUBRICATION — At least every 6 months,
lubricate the solution pump as follows:
1. Unplug the electrical power cord.
2. Loosen the set screw in the feed control knob
and remove the knob and bushing.
3. Remove the pump top cover.
4. Clean all the grease from the moving parts and
inspect for wear, damage or corrosion. Replace
parts as needed
5. Lubricate all parts with a premium grease.
NOTE: If you replace any parts, adjust the cam and
plate (FIG. 14) as follows:
1. Loosen the adjustment plate holding screw.
2. Plug in the power cord and operate motor until
the block-drive is in the extreme rear position.
Disconnect power cord.
3. Rotate the shaft assembly until the flat position
on the cam is bearing on the drive plate.
4. Tighten the adjustment plate holding screw
while holding the flat of the cam against the drive
plate.
GEARMOTOR — Every 6 months, place a few
drops of spindle oil on the rear rotor bearing (right
behind the fan).
NOTE: To get at the gear motor, unplug the power
cord and remove the screws holding the motor
housing to the regulator housing (located under
pump head and at rear of pump). Carefully lift the
regulator housing up and off.
CHECK THE DIAPHRAGM -
1. Unplug the power cord.
2. Remove the 4 screws holding the pump head to
the housing.
3. Move the pump head away from the pump and
inspect the diaphragm for cracking, swelling,
softening or blistering. If a new diaphragm is need­
ed, replace it as follows:
SHAFT ASSEMBLY
ORiVE BLOCK !N
EXTREME REAR
REPLACING THE DIAPHRAGM —
1. Turn the diaphragm to the left ('»^) to remove.
Discard the diaphragm, backup gasket,spacer and
washer, (see Key No. 18, page 18).
2. Put a few drops of oil or lightly grease the stud
on the new diaphragm. Place the spacer over the
hex nut, then the fiber washer.
3. Holding the backup gasket in place behind the
diaphragm, turn the diaphragm into the drive plate
until the spacer just touches it. Then tighten to
align the mounting holes.
4. Replace the pump head and turn in the 4 screws,
tightening in a criss-cross pattern.
5. Plug the power cord in and prime the head using
the guides on page 14.
CHECK THE TUBING - Check the solution carry­
ing tubing and fittings weekly for any signs of
leakage, if leaking at a holding nut, tighten it 1/8 to
1/4turn. If it still leaks, disconnect the tubing, cut
the end square and reconnect it to the fitting.
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