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How good is any of the equipment you own? It is only as good as it is MAINTAINED. Even the
finest equipment manufactured requires attention and care. The 05 MODEL A30HP is no
different. A good well planned and carried out preventative maintenance program will enhance
a properly operating unit as well as the safety of those operating and using the equipment.
It is very important to establish a good maintenance program. Costly repairs and loss of
revenue can often be avoided by planning ahead, setting a regular schedule and exercising
good preventative maintenance techniques.
The following section is offered as a guide and depicts a start for developing your own
preventative maintenance program for the MODEL A30HP concrete pump. The program is
depicted and broken into sections of INSPECTION and LUBRICATION.
All points noted herein regarding the maintenance
and checks are not intended to replace any local or
regional regulations which may pertain to this type of
equipment. It should also be noted that the list and
schedule is not considered to be inclusive. Interval
times may vary due to the climate and/or conditions
associated with the location area in which the
equipment will be used.
It is your responsibility to always insure that the
applicable safety precautions are strictly observed
when performing the inspections and maintenance
checks. Make certain any components that are found
to be defective are replaced or those in need of
adjustments or repair are corrected before operating
the machine.
REVISION:
REED ROCK MASTER A30HP
TRAILER CONCRETE PUMP
PREVENTATIVE MAINTENANCE
MAINT
PAGE
00
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Summary of Contents for REED Rock Master A30HP
- Page 1 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE PREVENTATIVE MAINTENANCE How good is any of the equipment you own? It is only as good as it is MAINTAINED. Even the finest equipment manufactured requires attention and care. The 05 MODEL A30HP is no different.
- Page 2 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE SCHEDULED INSPECTION The main purpose of accomplishing scheduled inspections is to identify and detect any potential malfunction before it can expand into a major problem. The list presented herein should be inspected and checked on a regular basis. In so doing, it will help ensure a good, safe unit performance.
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Page 3: Hopper Assembly
MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE 3. PUMP CELL • Visually check for structural damage, cracked welds • Hydraulic drive cylinders in good condition, secure, no leakage • Material cylinders secure, tie rods tight • Water box structurally sound, clean, cover in place •... -
Page 4: Remote Control
MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE 6. REMOTE CONTROL • Control console in good condition, not damaged • Switch in good condition • Umbilical cord in good condition, no cuts, securely mounted to box 7. HYDRAULIC SYSTEM •... - Page 5 MAINT EED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE LUBRICATION The MODEL A30HP concrete pump is equipped with several components that because of the application require frequent lubrication. These areas involve the S-tube shifting mechanism, swing components, the shift and outlet bearings and agitator. To insure the economical service and the long life of these components, grease fittings are installed at each point.
- Page 6 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE REVISION:...
- Page 7 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE On the same basis, recommended lubrication intervals are based on normal use, in normal environmental conditions. User is CAUTIONED to adjust the lubrication interval accordingly to meet each individual condition and usage If the swing tube bearing housings become extremely hot or lubricant becomes a liquid and oozes out around the bearing or seal, the area should be relubricated.
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Page 8: Hydraulic System Maintenance
PAGE HYDRAULIC SYSTEM MAINTENANCE The REED MODEL A30HP utilizes a diesel engine as the main source of power, which drives the main hydraulic pump. The hydraulic pump is used to supply the flow and develop the necessary pressure to operate the concrete pump. As with any operational system, it is only as good as it is maintained. -
Page 9: Hydraulic Tank
MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE HYDRAULIC TANK The hydraulic tank has a capacity of 40 GALS (190L) and is located just forward of the hopper. It is equipped with a filler breather unit, access cover. A sight gauge is installed on the left side of the tank and is used to determine the fluid level inside the tank. -
Page 10: Adding Hydraulic Fluid
MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE For ambient temperatures of 90° F (32° C) and above use fluid designated as a ISO rating of 68. Use ISO 32 for ambient temperatures of 32° F (4° C) and below. - Page 11 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE FILTER INDICATOR FILTER HOUSING GASKET CHECK VALVE The MODEL A30HP hydraulic filter system consist of a return filter located on tank’s side. The filter is equipped with a condition indicator gauge which should be checked periodically and the element changed when gauge reads 25PSI or higher..
- Page 12 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE CLEANING THE HYDRAULIC TANK The hydraulic tank should be drained and cleaned after 1000 hours of operation or yearly whichever comes first. This will assist in keeping the systems clean and in proper condition.
- Page 13 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE DESCRIPTION OF HYDRAULIC SYSTEM The hydraulic system of the MODEL A30HP consists of two separate circuits and although integrated, each is designed to perform a particular function within the operation of the concrete pump.
- Page 14 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE This action continually takes place. This is the purpose of the MAIN PUMP circuit, to provide the hydraulic power for this operation. The MAIN PUMP CIRCUIT is of the OPEN LOOP type. Meaning, that the hydraulic pump directs the fluid to one hydraulic cylinder to extend and the oil from the retracting cylinder is directed back to the tank.
- Page 15 Can-Bus logic controller. The controller is a REED proprietary solid state device, designed to control the alternating action of the material cylinders and in turn the movement of the swing tube.
- Page 16 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE The hydraulic drive cylinders are identical and because only one cylinder is pressurized at a time, a means is required to assist in the retraction of the opposite cylinder. This is accomplished by connecting the rod sides of the cylinders together.
- Page 17 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE In addition to piston leakage, a SHORT STROKE condition may result from incorrect proximity sensor location or leaking check valves. As protection to the MAIN PUMP CIRCUIT against excessive pressure, a relief valve has been installed and is set to open at 3000 PSI, main system pressure.
- Page 18 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE SHIFT CIRCUIT MANIFOLD Like the main hydraulic circuit, the shift circuit is incorporated into the manifold block. This block is flange mounted to the drive cylinders. It contains a shift cartridge, relief cartridge, (2) two solenoid valve cartridge, and unloading valve cartridge.
- Page 19 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE • RELIEF CARTRIDGE - This cartridge is located on the top side of the manifold block and is used to protect the system from excessive pressure and to limit the amount of pressure being applied to the accumulator and is set at 2300 PSI (158 Bar) •...
- Page 20 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE • SOLENOID VALVE CARTRIDGE – (Y4 Refer to the schematic) Referred to as a dump valve, it is designed into the shift circuit as a SAFETY VALVE. Its purpose is to automatically relieve the pressure in the accumulator through an orifice.
- Page 21 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE The accumulator is incorporated into the shift circuit to provide instant pressure and volume for the shifting of the swing tube, which cannot be obtained under normal circumstances. An accumulator is a hydraulic reservoir that retains the hydraulic fluid under high pressure.
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Page 22: Adjustment Procedures
To perform the following checks and adjustments, the following test gauges may be required. The TEST GAUGE KITS are available from the REED Parts Department. DO NOT ACTUATE PUMP SWITCH. A. SETTING MAIN RELIEF PRESSURE PUMP GAUGE 6000PSI. - Page 23 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE HYDRAULIC GEAR PUMP ENGINE REF • The setting should read 3000 psi. • If the pressure is correct then all is well. • If the setting has been changed or is not to this spec., then an adjustment must be made.
- Page 24 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE DO NOT ACTUATE PUMP SWITCH UNTIL ALL HANDS ARE CLEAR. 3. SHIFT CIRCUIT SYSTEM PRESSURE – SET @ 2000 PSI/140 BAR SHIFT RELIEF PRESSURE – 2300 PSI/160 BAR The S-Tube Shift Circuit is located on the manifold block curb, side. It contains the relief and unloader valve.
- Page 25 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE ADJUSTMENT TO SWING TUBE It is important from an operational standpoint that the swing tube shift properly from side to side and that it is properly adjusted to prevent leakage particularly at high pressure and high volume pumping.
- Page 26 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE REVISION:...
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Page 27: Major Component Replacement
A step by step procedure is offered. Please be aware that the possibility exists your machine may be slightly different. If you find this to be the case, contact the REED Service Department. They will be pleased to assist you. SWING TUBE & COMPONENTS... - Page 28 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE • Place a sling from an overhead hoist around the discharge end of swing tube to help support the tube. • Unbolt outlet flange from hopper and remove, being careful not to damage any of the seals and o-rings.
- Page 29 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE REVISION:...
- Page 30 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE RE-ASSEMBLY • Apply a small amount of general-purpose grease on the outside area of the wear ring and thrust ring. Install both pieces into swing tube. • Slide the new wear plate down between the swing tube and hopper. Reinstall and tighten the bolts.
- Page 31 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE • Place a sling from an overhead hoist around the discharge end of the swing tube to help support the tube. • Unbolt outlet from swing tube and push outlet as far as possible toward hopper.
- Page 32 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE • Reassemble the swing tube and components in basically the reverse order used in disassembly. Some important items to be noted are: • Make sure all components that are to be reused are cleaned from any residual material or grease.
- Page 33 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE Be sure pressure in accumulator shift circuit has been released before doing any work inside the hopper or inside the flush box. Do not place hands in the water box or in adjacent area while motor is running.
- Page 34 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE REVISION:...
- Page 35 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE PISTON ADAPTER GUIDE RING REMOVAL / REPLACEMENT Installed on the piston adapter, is a guide ring that is used as a support and wear ring for the material cylinders. This guide ring will need replacing from time to time and a tell-tail sign is if noise or chatter is heard from the material cylinders.
- Page 36 To successfully work in the system and do the job intended the accumulator must first be pre- charged. This operation involved the induction of DRY NITROGEN GAS into the bladder to a pressure of 1100 PSI (75.8 BAR). This pressure will vary with each REED pump. Check the specifications noted in MAINTENANCE SECTION, HYDRAULIC DESCRIPTION CHAPTER of the appropriate manual.
- Page 37 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE In operation of the accumulator in the hydraulic system, hydraulic fluid enters the accumulator through the fluid port and fills the area at the bottom between the inner wall of the shell and bladder.
- Page 38 A Charging and Gauge Kit is required to perform maintenance on the accumulator. It is available from the REED Parts Department and you will find that it to be a good investment for your workshop REVISION:...
- Page 39 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE CHECKING PRESSURE Prior to checking of the accumulator pre-charge pressure the machine must be shut-down and all hydraulic pressure and fluid in the accumulator has been relieved. • Unscrew the valve protection cap (N). Exercise extreme care not to damage the O-ring (P) when removing the cap.
- Page 40 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE RELEASE OF PRESSURE When gauge indicates that the pre-charge pressure is too high proceed is as follows to release some of the pressure within bladder. • With gauging valve installed, carefully open the MANUAL BLEED valve (B), releasing some of the nitrogen gas.
- Page 41 MAINT REED ROCK MASTER A30HP TRAILER CONCRETE PUMP PAGE The gauge on the gauging unit during pre-charge registers the incoming line pressure and not necessarily accumulator pressure while charging. • The accumulator pressure can be checked by first closing the shut-off valve on nitrogen bottle.
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