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MAYCO LS600 PUMP — OPERATION AND PARTS MANUAL — REV. #4 (9/15/11) — PAGE 39
1. The lubrication level should be checked everyday prior
to pumping and maintained at a height of 5 inches or
about ½ the concrete cylinder height. We recommend
using a 30-weight motor oil.
2. As the rubber piston cups naturally wear, fine cement
particles will accumulate in the box. Once the concrete
paste reaches a height of about ½ inch from the bottom
of the box, drain and clean the lubrication box.
CLEANING THE LUBRICATION BOX
1. Remove the top cover and the drain plug (Figure 40)
located at the bottom of the box and fully drain the
inside of the box.
2. Once the box is drained, start the engine and stroke
the cylinder (
keep hands out of box
) ten to fifteen
times.
3. While stroking, spray water inside of the box to
thoroughly clean out all contamination (Figure 40).
4. When the box is clean replace drain plug, add new
lubrication and install the top cover.
CYLINDER LUBRICATION BOX
Figure 40. Cleaning the Lubrication Box
LS600 PUMP — MAINTENANCE (PUMP)
ACCUMULATOR CIRCUIT
Figure 41. Accumulator
CHECKING ACCUMULATOR BLADDER PRESSURE
The normal accumulator charge pressure should be
approximately
1100 PSI
. To check the accumulator
pressure:
1. Start the engine and stroke the pump. The
accumulator pressure gauge
(Figure 30) should read
1750 PSI
.
2. To determine the
actual
accumulator PSI, stop the
engine and observe the pressure gauge. As the PSI
reading slowly decreases, it will reach a point where
there will be a sudden drop in the PSI. The PSI reading
should be taken just prior to this sudden drop. If you
do not read 1100 PSI, the accumulator may require
charging or bladder replacement.
When the pump cycles, a part of the stored oil is released
to the shuttle cylinder. This pressure release assures the
shuttle tube has enough force to shear the cylinder of
concrete passing from the concrete cylinder to the concrete
delivery line during the cycle phase.
Before checking lubrication level, follow lock out-tag
out procedures.Stop the engine and remove the engine
starter key.
Improper accumulator charging can result in an
explosion causing serious injury or death!
NEVER
use
oxygen or compressed air to charge the accumulator!
Only qualified personal should perform this procedure.
Use only
dry nitrogen
to charge
the accumulator. Contact your
Mayco service department or
your local Hydac representative
for proper charging procedure.
The accumulator circuit has two functions in the hydraulic
system.
■
The accumulator circuit furnishes the hydraulic pressure
to cycle the shuttle tube.
■
The accumulator circuit also furnishes the pilot pressure
necessary to activate the hydraulic system.
The accumulator circuit is equipped with
a bladder type accumulator (Figure 41)
charged with
1100 PSI
of dry nitrogen. The
accumulator stores one gallon of
hydraulic oil, which is, under
1750 PSI
of
pressure.
CAUTION - SAFETY GUIDELINES
DANGER - ACCUMULATOR CHARGING
When using the pump during freezing conditions,
completely drain the water box and cover the hopper
after pumping. Frozen liquid will restrict the piston travel
and cause
severe damage
to the pump.
WARNING - FREEZING CONDITIONS
Summary of Contents for MAYCO LS600
Page 3: ...MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 PAGE 3 NOTES...
Page 11: ...MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 PAGE 11 NOTES...
Page 81: ...MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 PAGE 81 NOTES...
Page 92: ...PAGE 92 MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 LS600 PUMP FRAME ASSY...
Page 96: ...PAGE 96 MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 LS600 PUMP BRAKE LINE ASSY...
Page 98: ...PAGE 98 MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 LS600 PUMP BRAKE LIGHT ASSY...
Page 102: ...PAGE 102 MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 LS600 PUMP BATTERY ASSY...
Page 104: ...PAGE 104 MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 LS600 PUMP HOPPER ASSY...
Page 116: ...PAGE 116 MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 LS600 PUMP FUELTANK ASSY...
Page 120: ...PAGE 120 MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 LS600 PUMP ACCUMULATOR ASSY...
Page 130: ...PAGE 130 MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 LS600 PUMP ENGINE ASSY...
Page 134: ...PAGE 134 MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 LS600 PUMP THROTTLE ASSY...
Page 138: ...PAGE 138 MAYCO LS600 PUMP OPERATION AND PARTS MANUAL REV 4 9 15 11 LS600 PUMP HYD PUMP ASSY...