CAT Pumps 1570 Manuale utente
SERVICE MANUAL
1570 PLUNGER PUMP
SERVICING THE 1570 PLUNGER PUMP SERIES
WARNING
Do not service pump or electrical equipment while energized.
Electricity can cause personal injury, death or property damage.
1. Adhere to “Lock Out” and “Tag Out” procedures for electrical equipment.
2. Before commencing pump service, turn power supply off.
3. Keep water away from electrical outlets and electrical devices.
4. Electrical components must be installed by a qualified
electrician to avoid risk of electrocution.
IMPORTANT SAFETY INSTRUCTIONS
It is the responsibility of the user to read and understand all instructions, important safeguards, and safety precautions before operating or
servicing any pump. Failure to do so may result in property damage, personal injury or death.
General Safety Information and Symbols
Pay special attention to the following signal words, safety alert symbols and statements:
indicates a hazardous situation which, if not avoided, will result in death or serious injury.
indicates a hazardous situation which, if not avoided, could result in death or serious injury.
indicates a hazardous situation which, if not avoided, could result in minor or moderate injury or property damage.
indicates a hazardous situation which, if not avoided, could result in property damage.
Indicates a potential personal injury hazard. Obey all safety messages that follow this symbol to avoid possible injury or death.
WARNING
CAUTION
NOTICE
DANGER
PUMP
MODEL
FLOW PRESSURE RPM TEMPERATURE SHAFT DIA. OIL CAPACITY
gpm lpm psi bar Pump Motor ˚F ˚C in mm oz l
1570 6.0 22.7 6,000 414 1350 —120 48 1.181 30 42 1.26
Internet: www.pijttersen.nl / www.catpumps.nl
2
Servicing the Valves
DISASSEMBLY (DISCHARGE VALVES ONLY)
NOTE: One (1) valve kit is required to repair pump.
NOTE: The discharge seat has a smaller diameter than the inlet seat.
1.0 Use a M10 Allen Wrench to remove the
eight (8) Hex Socket Head (HSH) screws
from valve cover on IMDM.
1.1 Remove valve cover. 1.2 Use a at tip screwdriver to remove
valve plugs from each valve chamber.
1.4 Remove coil spring and then washer
from each valve chamber.
1.3 Use a pick tool to remove backup-ring
and o-ring from each valve plug.
1.6 Disassemble discharge valve assembly
and inspect all parts per NOTES
NOTE: Examine seats, valves and springs for grooves, pitting or wear and replace with a
new valve kit as needed.
NOTE: Examine o-rings and backup-rings for cuts or wear and replace with a new valve kit
as needed.
1.5 Use a needle nose pliers to grab the tip
end of the spring retainer and pull valve
assembly from each valve chamber.
3
NOTE: Lubricate o-rings and backup-rings on valve seats and valve plugs prior to reassembly.
1.7 Place new assemblied discharge valve
assembly into each valve chamber.
1.8 Place washer over tip of spring retainer
and then coil spring.
1.9 Press in valve plug into each valve
chamber.
1.11 Apply anti-sieze lubricant (PN 6119) to
threads of all eight (8) HSH screws and
hand tighten.
1.10 Place valve cover on top of IMDM and
align with threaded holes.
REASSEMBLY
1.12 Use a M10 Allen Wrench to torque all
eight (8) HSH screws to 398 in lbs, 33 ft
lbs or 45 Nm in sequence show.
TORQUE SEQUENCE
7
5
1
3
4
2
6
8
4
Servicing the Valves
DISASSEMBLY (INLET VALVES ONLY)
NOTE: One (1) valve kit is required to repair pump.
NOTE: In order to remove inlet valve assembly, remove IMDM and housing block.
NOTICE
Exercise extreme caution when
removing head assembly. The weight of
the head assembly or any twisting action
can damage the ceramic plungers.
2.2 Pull complete head assembly carefully
over ceramic plungers and place on a
at surface with the housing block side
facing upwards.
2.0 Use a M8 Allen Wrench to remove the four
(4) Hex Socket Head Screws (HSH) that
secure the housing block to the crankcase.
2.4 Pull housing block away from IMDM.2.3 Use a M10 Allen Wrench to remove the
eight (8) HSH screws that secure the
housing block to the IMDM.
2.1 Postion two at tip screwdrivers on
either side of housing block and pry the
housing block from the crankcase.
2.5 Remove outer cylinders with seal case
assembly from IMDM.
2.7 Use a reverse pliers to grasp spring
retainer and pull inlet valve assembly
from each valve chamber.
2.6 Remove V-Packing (V/P) cylinder
assembly from each IMDM valve
chamber.
5
2.8 Disassemble inlet valve assembly and
inspect all parts per NOTES
NOTE: Examine seats, valves and springs for grooves, pitting or wear and replace with a
new valve kit as needed.
NOTE: Examine o-rings and backup-rings for cuts or wear and replace with a new valve kit
as needed.
REASSEMBLY
2.11 Slide outer cylinder with seal case
assembly and hand press into place.
2.9 Place new assembled inlet valve
assembly into each valve chamber.
2.10 Position V/P cylinder assembly into
IMDM and hand press into place.
2.12 Position housing block with counter-
bore surfaces facing downward over
outer cylinders.
NOTE: Apply anti-sieze lubricant (PN 6119) to threaded ends of all eight (8) HSH screws and hand
thread into position.
NOTE: Lubricate o-rings and backup-rings on valve seats and V/P cylinders and o-rings on outer cylinder prior to reassembly.
6
TORQUE SEQUENCE
2.15 Use a M8 Allen Wrench to torque all four
(4) HSH screws to 531 in lbs, 44 ft lbs or
60 Nm in sequence show.
NOTE: Apply Loctite®242® to threaded ends
of all four (4) HSH screws and hand
thread into position.
4
2
1
3
TORQUE SEQUENCE
NOTICE
Exercise extreme caution when installing
head assembly. The weight of the head
assembly or any twisting action can
damage the ceramic plungers.
Rotate crankshaft by hand so the two
outside plungers are extended equally.
2.13 Use a M10 Allen Wrench to torque all
eight (8) HSH screws to 398 in lbs, 33 ft
lbs or 45 Nm in sequence show.
2.14 Slide complete head assembly carefully
over ceramic plungers until ush against
crankcase.
7
5
1
3
4
2
6
8
Loctite and 242 are registered trademarks of the Henkle Corporation
REASSEMBLY CONTINUED
7
Servicing the Seals
DISASSEMBLY
NOTE: One (1) seal kit is required to repair pump.
NOTE: In order to replace seals, remove IMDM and housing block.
NOTICE
Exercise extreme caution when removing
head assembly. The weight of the head
assembly or any twisting action can
damage the ceramic plungers.
3.2 Pull complete head assembly carefully
over ceramic plungers and place on a at
surface with the housing block side facing
upwards.
3.0 Use a M8 Allen Wrench to remove the four
(4) Hex Socket Head Screws (HSH) that
secure the housing block to the crankcase.
3.4 Pull housing block away from IMDM.3.3 Use a M10 Allen Wrench to remove the
eight (8) HSH screws that secure the
housing block to the IMDM.
3.1 Postion two at tip screwdrivers on either
side of housing block and pry the housing
block from the crankcase.
3.5 Remove outer cylinder with seal case
assembly from IMDM.
3.6 Remove low pressure seals and o-rings
from each seal case.
3.7 Remove seal case assembly from each
outer cylinder.
8
3.9 Remove female adapter from each
V/P cylinder.
3.10 Remove v-packings (qty 3) from each
V/P cylinder.
3.11 Remove male adapter from each
V/P cylinder.
NOTE: Remove o-ring and backup-rings
from each V/P cylinder.
3.8 Remove V/P cylinders from IMDM.
DISASSEMBLY CONTINUED
NOTE: Examine low pressure seals and v-packings for wear and replace with a new seal kit
as needed.
NOTE: Examine o-rings, backup-rings and wicks for cuts or wear and replace with a new
seal kit as needed.
NOTE: Examine collars for wear or damage and replace individually as needed.
NOTE: Examine female adapters for grooves, pitting or wear and replace with a new seal kit
as needed.
NOTE: Examine male adapters for grooves, pitting or wear and replace individually
as needed.
NOTE: Examine seal case, outer cylinder and V/P cylinders for wear or damage and replace
individually as needed.
3.13 Inspect all parts per NOTES
3.12 Remove collars and wicks from
crankcase side of housing block.
9
REASSEMBLY
3.16 Install female adapter with v-grooved
side facing down into each V/P cylinder.
3.14 Install brass male adapter with at
surface down into each V/P cylinder.
3.19 Lubricate outside diameter of each
low pressure seal and inside diameter
of each seal case. Install low pressue seal
with spring side down into each seal
case.
3.20 Lubricate seal case o-ring and inside
diameter of each outer cylinder. Hand
press each seal case assembly with
low pressure seal facing outwards into
outer cylinder.
3.15 Lubricate and install v-packings with
v-grooved side down into each V/P
cylinder. Each cylinder requires three (3)
v-packings.
3.17 Lubricate and install backup-ring and
then o-ring onto small end of each V/P
cylinder. Position small end of each
V/P cylinder into the IMDM and press
into place.
3.18 Lubricate and install o-ring into groove of each outer cylinder. Slide outer cylinder over
each V/P cylinder and hand press into IMDM.
10
REASSEMBLY CONTINUED
3.21 Install wicks and then collars into
crankcase side of housing block.
3.22 Position housing block with counter-
bore surfaces facing downward over
outer cylinders.
NOTE: Apply anti-sieze lubricant (PN 6119)
to threaded ends of all eight (8) HSH
screws and hand thread into position.
TORQUE SEQUENCE
3.25 Use a M8 Allen Wrench to torque all four
(4) HSH screws to 531 in lbs, 44 ft lbs or
60 Nm in sequence show.
NOTE: Apply Loctite®242® to threaded ends
of all four (4) HSH screws and hand
thread into position.
4
2
1
3
TORQUE SEQUENCE
NOTICE
Exercise extreme caution when installing
head assembly. The weight of the head
assembly or any twisting action can
damage the ceramic plungers.
Rotate crankshaft by hand so the two
outside plungers are extended equally.
3.23 Use a M10 Allen Wrench to torque all
eight (8) HSH screws to 398 in lbs, 33 ft
lbs or 45 Nm in sequence show.
3.24 Slide complete head assembly carefully
over ceramic plungers until ush
against crankcase.
7
5
1
3
4
2
6
8
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