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MAYCO LS400/LS500 PUMP — OPERATION AND PARTS MANUAL — REV. #6 (09/19/11) — PAGE 37
LS400/LS500 PUMP — MAINTENANCE (PUMP)
HYDRAULIC OIL SYSTEM MAINTENANCE
The Mayco pump is equipped with an in-tank return hydraulic
filter with a 10 micron cleanable filter. The element has been
designed to remove all particles large enough to cause wear
and job break down. Under normal conditions, we recommend
replacement every 6 month.
DO NOT mix oil brands! This may impair quality.
Use only a 2½" diameter clean-out hook
when back-pumping into redi-mix truck. Use
a safety chain to secure the clean-out hook
to some solid part of the mixer truck to
prevent hook from jumping off of the drum.
Run the pump at 6 strokes per minute
maximum speed.
2. Lubrication: Grease daily/Hour
(Recommended after each Pour)
■
Main hydraulic cylinders - 2 Place
■
Axle crank - 1 Place
■
Shuttle cylinders - 2 Place
■
“S” tube outlet flange - 3 Place
Grease Type: Lithium Based EP
Texaco Multitak 20
Lubriplate ED-2
The most important factor to keep in mind is the effect of
cold weather on the hydraulic oil. The viscosity (thickness)
of the hydraulic oil will be much heavier.
ALWAYS run machine until oil temperature reaches a
minimum of 50°F. before pumping. Damage to the main piston
pump will occur if the machine is cycled too fast before the
oil temperature reaches the minimum of 50°F. Cycle the
machine at 6-8 strokes per minute at approximately 1/3
throttle.
In areas where the weather normally remains
under 50°F
.,
use Shell Oil Tellus 46 (or the equivalent). The above steps
must be followed or severe damage to the main axial piston
pump can occur.
1. When changing the hydraulic oil or topping off the
reservoir, use only the following type.
(Reservoir capacity - 50 gal.)
Hydraulic oil: Shell Oil Tellius 68 or
Mobil DFE 26
Texaco Rand HDC
NEVER use muriatic acid to clean the pump. Acid will
dissolve the chrome finish on material cylinder bore
and main hydraulic cylinder rods.
Deutz Model F4L2011F/BFL2011F Diesel Engine
This pump is equipped with either a Deutz F4L2011F or Deutz
BF4L2011F turbo diesel engine. For information concerning the
procedure in checking, removing, cleaning, etc. of the various
engine parts or any other information on the engine not contained
herein, refer to the engine manufacturer’s instruction manual.
WARNING - HYDRAULIC OIL
WARNING - ACID CLEANING
5. Add water to the hopper. Pump and flush clean the entire
hopper, shuttle tube and discharge elbow with water.
6. Scoop out 12 inches of concrete from the inboard end
of the delivery hose. “Cork screw” a 6" x 6" x 8" sponge
into the end of the first hose section. Reconnect the
hose to the discharge elbow.
7. Fill hopper with water. Pump until sponge and clean water
come out the discharge end of the hose and line system.
8. When the pump has been used to pump small aggregate
concrete (pea rock, ½" minus) or mixes with high fines
content (60% or more sand) there will be a tendency for
hardened concrete to build up on the inside surface of
the shuttle tube. Therefore, at the end of every such
pour, after the pump and system have been cleaned
and the engine shut off, remove all remaining concrete.
9. When the pump has been used to pump large aggregate
concrete (" to 1 (" follow the instructions in step 8 once
per week.