DISCLAIMER: Official REED Service Manuals
deal with the various aspects of Operation, Preventative
Maintenance, System Care and Maintenance, Component
Adjustment, Repair and Replacement. However, like anything
mechanical and due to application of pumping concrete,
the possibility exists that at one time or another conditions
may arise that will cause the machine to malfunction.
These conditions may not be as apparent as a
broken part, etc., but recognizing the symptoms will
assist in determining the cause and repair and reduce
the downtime. This Troubleshooting Guide depicted below
is designed to assist you in recognizing the possible
symptoms, a probable cause and a suggested corrective
action. The format used identifies a major component
or system and categorizes the potential failure for
that specific area with the symptom. The items listed
are based on symptoms and malfunctions derived from
our experience with the REED Pump and from your calls
to our Service Department. It is also our intent to
upgrade this website periodically. Please email any
questions or suggestions for improvement to mike.newcomb@reedmfg.com
1. CRANKS,
BUT FAILS TO START
2. DOES
NOT CRANK
3. OPERATING
AT VERY LOW R.P.M.
4. BOGS
DOWN WITH FULL THROTTLE, FULL VOLUME AND PUMP SWITCH
ON
5. FAILS
TO DELIVER REQUIRED VOLUME AND PRESSURE
6. EXCESSIVELY
NOISY
7. FAILS
TO DELIVER REQUIRED VOLUME AND PRESSURE
8.
CYLINDERS WILL NOT STROKE
9.
CYLINDERS NOT FULLY EXTENDED SHORT STROKE
10.
MATERIAL CYLINDERS NOT FILLING WITH CONCRETE
11.
SLURRY IN WATER BOX
12.
PISTON CUPS SQUEAL IN OPERATION
13.
S-TUBE DOES NOT SHIFT PROPERLY
14.
S-TUBE DOES NOT COMPLETELY SHIFT OVER
COVERING MATERIAL CYLINDERS
15.
HYDRAULIC FLUID GETS HOT
16.
REMIXER WILL NOT ROTATE
17. RADIO
CONTOLLER NOT FUNCTIONING
ENGINE
1.
CRANKS, BUT FAILS TO START
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
NO FUEL fill up fuel tank with a good grade of diesel fuel. No dirt or particles
·
DIRTY FUEL FILTER replace filter.
·
CLOGGED FUEL LINE (a) check and clean in-line filter (b) disconnect
fuel line and air blow clean
·
LEAK IN FUEL SUPPLY LINE (a) check all connections and hoses including the
return lines (b) pressure test if necessary
·
FUEL SOLENOID - (a) check for voltage (b) remove and see if trigger
activates
·
DIRTY INJECTORS clean or replace injectors
2.
DOES NOT CRANK
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
LOW BATTERY check battery output, recharge
or replace
·
BATTERY CABLES LOOSE clean and tighten cables, check
ground connection
·
IGNITION KEY SWITCH IS FAULTY check power across contacts, replace
if damaged
·
STARTER FAULTY (a) check for power at starter (b) replace
3.
OPERATING AT VERY LOW R.P.M.
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
THROTTLE NOT ADJUSTED PROPERLY reset using throttle control
·
THROTTLE LEVER
ON ENGINE
STICKING (a) check movement, apply lubricant
(b) spring binding check connection
·
THROTTLE CONTROL CABLE (a) check that cable moves freely when control is
pulled (b) check cable for any kinks (c) check connection
at throttle lever
·
RPM SPEED NOT PRESET PROPERLY (a) adjust to correct speed; idle
speed 800 RPM (b) maximum high speed no load (refer
to specification sheet)
4.
BOGS DOWN WITH FULL THROTTLE, FULL VOLUME AND PUMP SWITCH ON
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
DIRTY AIR CLEANER clean or replace
·
DIRTY FUEL FILTER check or replace
·
MAIN RELIEF VALVE SET TOO HIGH readjust as necessary
·
ENGINE OVERLOADED OR SUBJECT TO EXTREMELY HIGH PRESSURE CONDITIONS
(a) back off (decrease) volume control on main pump
·
HORSEPOWER LIMITER ON MAIN
PUMP MISADJUSTED (units with HA10V071 Pumps Model B30HP, B40, M40B, 4040B) contact REED
service at 909-287-2100
MAIN
HYDRAULIC PUMP
5.
FAILS TO DELIVER REQUIRED VOLUME AND PRESSURE
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
ENGINE SPEED TOO LOW (a) adjust throttle control to full open (b) readjust
engine maximum no load speed to specified RPM
·
VOLUME CONTROL SET TOO LOW adjust control to full on (open)
·
PRESSURE GAUGE DEFECTIVE - (a) install test gauge to verify (b) replace if defective
·
LOAD SENSE VALVE NOT WORKING PROPERLY (a) improper adjustment (b) contamination,
remove and clean (c) defective replace
·
PRESSURE SETTINGS INCORRECT check pressure and adjust accordingly
(refer to Adjustment section of your pumps manual
for proper pressures)
·
EXCESSIVE PUMP WEAR (a) loose or worn parts (b) flow test to determine
if pump output is satisfactory
6.
EXCESSIVELY NOISY
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
INSUFFICIENT OIL (a) check oil level in tank (b) suction strainer
clogged clean
·
AIR IN SYSTEM (a) check for vacuum leak in suction line, connection
(b) aeration bubbles of fluid in reservoir
·
EXCESSIVE SYSTEM PRESSURE (ABOVE PUMP RATING) check relief valve operation and
setting
·
EXCESSIVE PUMP WEAR loose or worn pump parts replace
·
ENGINE RPM HIGHER THAN THE PUMP RPM RATING adjust RPM as necessary
AUXILARY
GEAR PUMP
7.
FAILS TO DELIVER REQUIRED VOLUME AND PRESSURE
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
INSUFFICIENT OIL suction strainer clogged clean
·
AIR IN SYSTEM (a) check for vacuum leak in suction line, connection
(b) aeration (bubbles of fluid in reservoir)
·
WORN OR DAMAGED PARTS replace pump
·
SYSTEM RELIEF SET TOO LOW OR BYPASSING (IF APPLICABLE) install pressure gauge in circuit
and dead head. Adjust relief
CONCRETE
PUMP PISTONS
8.
CYLINDERS WILL NOT STROKE
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
PUMP SWITCH IS NOT ON turn to on position
·
ENGINE SPEED TOO LOW increase RPM to maximum
·
VOLUME CONTROL TOO LOW open to full on
·
ELECTRICAL (a) check fuses (b) check connection to pump switch,
continuity to terminals (c) check for broken wires,
dirty terminals (d) check electrical connection and
voltage on main cycle valve (e) proximity sensor gap
too large check using key gauge (f) proximity sensor
faulty (g) check prox (proximity) switches on machine
by passing a piece of steel under each prox switch
with engine running and pump switch off. S-tube (swing
tube) should swing each time either prox switch is
signaled.
·
LOW VOLTAGE check battery, voltage to solenoid main cycle valve
·
FAULTY BLACK BOX - replace
9.
CYLINDERS NOT FULLY EXTENDED SHORT
STROKE
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
PROXIMITY SWITCHES ARE MISADJUSTED (a) check that switches are positioned
for full stroke reposition. Do not exceed 200 PSI
spike on pressure gauge when at full volume and full
RPM. Pressure spike indicates cylinders are bottoming
out (b) check that both proximity switches are in
identical positions
·
TOO MUCH HYDRAULIC OIL ON ROD SIDE OF HYDRAULIC CYLINDERS (a) actuate and hold TEST switch,
turn pump switch ON and actuate either CYL A
B switch until cylinder being extended bottoms out
(full extension). Resume normal operation (b) inspect
check valve on barrel side of cylinder clean or
replace if faulty (c) cylinder piston seals are leaking
- replace
10.
MATERIAL CYLINDERS NOT FILLING WITH
CONCRETE
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
BAD CONCRETE MIX check mix design
·
PUMP SPEED TOO FAST adjust to suit type of mix
·
FAULTY PISTON O-RINGS/PISTON CUPS replace
·
PUMP OPERATING IN REVERSE place pump switch in FORWARD
11.
SLURRY IN WATER BOX
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
PISTON CUPS IN MATERIAL CYLINDER ARE WORN OR LOOSE (a) check tightness (b) replace
with new cups
·
CONCRETE CYLINDERS EXCESSIVELY WORN (a) replace
12.
PISTON CUPS SQUEAL IN OPERATION
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
IMPROPERLY INSTALLED CUPS piston plate mounting bolts over-tightened causing
piston cups to distort (*note* - during break-in of
new cups, squealing is normal)
SWING
TUBE SHIFTING
13.
S-TUBE DOES NOT SHIFT PROPERLY
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
CONCRETE BUILD-UP IN AREA OF WEAR RING OR WEAR PLATE IN HOPPER clean out and remove build-up
·
S-TUBE ADJUSTED TOO TIGHT loosen large nut at bellcrank one-two flat turns
·
BINDING CAUSED BY MATERIAL BUILD-UP BEHIND THRUST RING AND
WEAR RING remove and clean up area replace thrust ring if damaged
·
INSUFFICIENT LUBRICATION check and lubricate shaft housing and outlet housing
·
ACCUMULATOR PRE-CHARGE PRESSURE TOO LOW (a) pre-charge to 1000 PSI (b)
replace bladder if pressure does not hold
·
SHIFT CIRCUIT PRESSURE TOO LOW (a) check engine RPM (b) check
system pressure relief to be typically set at 2000
PSI (consult your manual) (c) check gear pump replace
if faulty
·
UNLOADER MANIFOLD check relief valve cartridge works properly free
of contamination (b) solenoid cartridge connections
tight (c) solenoid coil in good condition and shows
12 volts (d) solenoid spool shifts easily (e) directional
control valve in working condition (f) inspect check
valve for contamination
·
SHIFT CYLINDER SEALS BYPASSING OIL (a) check by disconnecting one
of the hoses from cylinder. as example: if rod is
extended, disconnect rod side hose. Pressure barrel
side of cylinder. If oil comes out of rod side port
or hose, then seals are bypassing oil. (b) replace
seals or cylinder
·
SWING VALVE NOT SHIFTING PROPERLY (a) check voltage to solenoid,
12 volts or more (b) check for contamination clean
or replace
14.
S-TUBE DOES NOT COMPLETELY SHIFT
OVER COVERING MATERIAL
CYLINDERS
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
CHECK FOR OBSTACLE IN HOPPER SUCH AS CONCRETE, WEAR PLATE,
WEAR RING BINDING, ETC. clear obstacle
·
SHIFT CYLINDER OUT OF ADJUSTMENT adjust cylinder rod at clevis. Loosen
locknut and turn rod with wrench. Make sure wrench
is placed on flats provided on cylinder rod
·
BELLCRANK NOT INSTALLED PROPERLY disconnect attaching parts and remove
bellcrank from spline adjust S-tube and reposition
bellcrank on spline. Reinstall attaching parts, adjusting
cylinder
HYDRAULIC
SYSTEM
15.
HYDRAULIC FLUID GETS HOT
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
OIL COOLER NOT FUNCTIONING PROPERLY (a) restricted air flow to cooler
clean outside cooler fins (b) open engine compartment
doors (if applicable) to dispense hot air (c) on electric
fan unit, check fuse and electrical connection, fan
rotating in wrong direction, motor burned out
·
FILTER ELEMENT CLOGGED replace
·
BREATHER CAP
ON TANK
CLOGGED remove, soak in solvent, air blow
dry
·
SUCTION STRAINERS CLOGGED drain tank, remove strainers, clean or replace
·
RELIEF VALVE SET TOO LOW (a) reset to proper specified pressure (b) replace
cartridge if faulty
·
OPERATING TOO LONG AT HIGH PRESSURE (a) use larger size delivery line
over long distances (b) mix may be bad causing higher
pump pressure
·
HYDRAULIC OIL LEVEL TOO LOW fill to proper level
REMIXER
16.
REMIXER WILL NOT ROTATE
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
CHECK CONNECTION OF AGITATOR TO DRIVE SHAFT broken or missing bolt
·
FROZEN IDLER PIN remove, clean, and lubricate
·
BROKEN KEY IN
DRIVE SHAFT COUPLING check and install new key or coupling
·
NO HYDRAULIC FLOW TO MOTOR (a) needle valve closed open
(b) control valve malfunctioning check valve operation
·
NO OR VERY LITTLE OIL FLOW TO CONTROL VALVE check flow replace tandem pump
·
HYDRAULIC MOTOR FAULTY - replace
RADIO
REMOTE CONTROL
17.
RADIO CONTOLLER NOT FUNCTIONING
[PROBABLE CAUSES & CORRECTIVE ACTIONS]
·
BATTERY NEEDS RECHARGING/REPLACING recharge or replace
·
ANTENNA NOT FUNCTIONING check antenna and connections
