Giant P470H User manual

Contents:
Installation Instructions: page 2
Pump Specications: page 3
Exploded View: page 4
Parts List / Kits: page 5
Torque Specications page 5
Repair Instructions: pages 6-7
Dimensions: back page
Warranty Information: back page
Triplex Ceramic
Plunger Pump
Operating Instructions/
Repair and Service Manual
Model
P470H
Hydraulic Drive Pump
Updated 04/22

2
INSTALLATION INSTRUCTIONS
Safety Rules
A safety valve is to be installed in accordance
with the guidelines for liquid spraying units
so that the admissible operating pressure
cannot be exceeded by more than 10%. Pump
operation without a safety valve as well as
any excess in temperature or speed limits
automatically voids the warranty.
When the pump is in operation, the drive shaft
end and the coupling must be enclosed by a
protective cover or a coupling bell.
Pressure in the discharge line and pump must
be at zero before any maintenance to the pump
takes place. Close suction line. Disconnect
fuses to ensure that the driving motor does not
get switched on accidentally.
Make sure that all parts on the pressure side
of the unit are vented before starting the pump.
In order to prevent air, or an air-water mixture
being absorbed and to prevent cavitation
occuring, the pump NPSHR suction head and
water temperature must be respected.
Cavitation and/or compression of gases lead
to uncontrollable pressure kicks which can ruin
pump and unit parts and also be dangerous to
the operator or anyone standing nearby.
Giant plunger pumps are suitable for pumping
clean water and other non-agressive or non-
abrasive media with a specic weight similar to
water.
Before pumping other liquids - especially
inammable, explosive and toxic media - the
pump manufacturer must be consulted with
regard to the resistance of the pump material.
It is the responsibility of the equipment
manufacture and/or operator to ensure that all
pertinent safety regulations are adhered to.
Required NPSH refers to water (specic
weight 1kg/dm3, viscosity 1°E) and maximum
premissible pump revolutions.
Operation and Maintenance
Check oil level prior to starting and ensure
trouble-free water supply.
Important! If there is a danger of frost, the
water in the pump and in the pump ttings
(particularly the unloader valve) must be
emptied. The second discharge port can be
used and the pump run “dry” for 1-2 minutes for
this purpose.
Oil: Use only 27.1 uid ounces (0.8 liters) of
ISO VG 220 GL4 (e.g. Aral Degol BG220) or
SAE 90 GL4 gear oil (Giant p/n 01154).
Initial oil change after 50 operating hours and
then every 500 hours,after 1 year if used less.
Caution: When operating in damp places or
with high temperature uctuations, oil must
be changed immediately [should condensate
(frothy oil) occur in the gear box].
NPSH values must be observed.
Maximum input pressure 145 PSI (10 bar),
maximum suction head -4.35 PSI (-0.3 bar).
Make sure that suction pulsation is su󰀩ciently
dampened - water column resonance must be
avoided.
Important! If the pump is not used for a long
period of time, it is possible the seals (23) could
become hard or brittle thus causing the pump to
leak when put into operation.
If this is the case, we recommend these seals
be replaced every 4 years.

3
Specications Model P470H
Volume ..........................................................................Up to 18.4 GPM....................................... 69.7 L/min
Discharge Pressure.......................................................Up to 2030 PSI .............................................140 Bar
Max. Inlet Pressure .......................................................-4.35 to 145 PSI ..................................-0.3 to 10 bar
Power Required ............................................................25.7 BHP ..................................................... 19.2 kW
Maximum Crankshaft Rotation Speed ..................................................................................Up to 1450 RPM
Stroke............................................................................0.94” ............................................................... 24mm
Crankcase Oil Capacity.................................................27.1 .oz.................................................... 0.8 Liters
Temperature of Pumped Fluids .....................................Up to 160 oF.................................................... 70 oC
Plunger Diameter ..........................................................1.18” ............................................................... 30mm
Inlet Ports ........................................................................................................ (1) x 1” BSP* & (2) x 3/4” BSP
Discharge Ports........................................................................................................................... (2) 3/4” BSP
Crankshaft Bore .................................................................................SAE 2B or SAE 4B 13T 16/32 Spline**
Shaft Rotation ..................................................................................................................... Towards uid end
Weight ...........................................................................39.7 lbs............................................................ 18 kg
NPSHR..........................................................................32.8 feet of head ...................... 10.0 meters of head
* Recommended for inlet connection.
** J498b 30° Class 5
U.S. METRIC
Consult the factory for special requirements that must be met if the
pump is to operate beyond one or more of the limits specied above.
RPM GPM 500 PSI 750 PSI 1000 PSI 1500 PSI 2030 PSI
1000 12.7 4.4 6.6 8.8 13.1 17.8
1100 14.0 4.8 7.2 9.7 14.5 19.6
1200 15.2 5.2 7.9 10.5 15.7 21.3
1300 16.5 5.7 8.5 11.4 17.1 23.1
1450 18.4 6.3 9.5 12.7 19.0 25.8
P470 HORSEPOWER REQUIREMENTS
NOTE:
In order to drive the pump from the side opposite the present shaft extension, simply remove the
valve casing from the crankcase and rotate the pumps 180 degrees to the desired position. Be
certain to rotate the seal case (item #20) as well, so that the weep holes are down at the six o’clock
position. Exchange the oil ll and the oil drain plugs, also. Refer to the repair instructions as neces-
sary for the proper assembly sequence.
Horsepower Ratings:
Horsepower ratings shown are the power requirements for the pump. Gas engine power outputs must
be approximately twice the pump power requirements shown above. We recommend that a 1.15
service factor be specied when selecting an electric motor as the power source. To compute specic
pump horsepower requirements, use the following formula: (GPM X PSI) / 1450 = HP
For the Application of a Hydraulic Motor:
To Determine the Torque of a Hydraulic Motor -- (GPM x PSI x 36.77) / RPM = Torque (in-lbs)

4
Exploded View - P470H

5
ITEM PART DESCRIPTION QTY.
1 08377 Crankcase 1
2 08378 Oil Fill Plug with Gasket 1
3 06479 Crankcase Cover 1
3A 07186 Oil Sight Glass w/Gasket 1
4 08380 O-Ring 1
5 07109 Oil Drain Plug 1
5A 06015 O-Ring 1
5B 08092 Plug with Gasket 1
6 01010 Screw 4
6A 01011-0400 Spring Washer 4
7 04739 Bearing Cover, Open 1
7A 03266 Motor Flange 1
7B 03297 Plug, M12 x 1 1
8 05291 Bearing Cover, Closed 1
8A 05292 Shim, 0.1 mm 1-3
9 01016 O-Ring 2
10 07114 Hexagon Socket Screw 4
10A 07774 Hexagon Socket Screw 4
11 07459 Radial Shaft Seal 1
12 05350 Bearing 2
13 03268 Crankshaft 1
13A 04742 Spacer Ring 1
14 03269 Magnet 1
15 08390 Connecting Rod Assembly 3
15B 05249 Connecting Rod Screw 3
15C 05348 Adapter Sleeve 3
16 05933 Plunger Assembly 3
16A 05352 Plunger Base 3
16B 06927 Plunger Pipe 3
16D 08399 Tension Screw 3
16E 07023 O-Ring 3
P470H PARTS LIST
ITEM PART DESCRIPTION QTY.
16F 07203 Support Ring 3
16G 07258 Copper Gasket 3
17 06790 Crosshead Pin 3
19 08366 Oil Seal 3
20 06928 Seal Adapter 3
20A 08059 O-Ring 3
21 06929 Seal Case 3
21A 07150 O-Ring 6
22 06930 Valve Holder 3
23 06931* Grooved Seal 6
24 06932 Support Ring 3
25 06933 Intermediate Casing 1
25B 02009 O-Ring 2
26 06935 Valve Casing 1
27A 04365 Valve Assembly 6
27 06937 Valve Seat 6
28 06938 Valve Plate 6
29 06959 Valve Spring 6
30 06939 Valve Spring Retainer 6
31 07212 O-Ring 6
32 08373 Plug 3
33 07214 O-Ring 3
34 06494 Cap Screw 8
36 07703 Plug, 3/4” BSP 3
36A 04529 Copper Ring 3
*Important! If the pump is not used for a long period
of time, it is possible the seals (23) could become hard
or brittle thus causing the pump to leak when put into
operation. If this is the case we recommend these seals
be replaced every 4 years.
Plunger Packing Kit, #09565
Item Part # Description Qty.
20A 08059 O-Ring 3
21A 07150 O-Ring 6
23 06931 Grooved Seal 6
24 06932 Support Ring 3
25B 02009 O-Ring 2
Valve Assembly Kit, #09566
Item Part # Description Qty.
27A 04365 Valve Assembly 6
31 07212 O-Ring 6
33 07214 O-Ring 3
Oil Seal Kit, #09306
Item Part # Description Qty.
19 08366 Oil Seal 3
P470H REPAIR KITS
P470H Torque Specications
Item Part # Description Lubrication Info Torque Amount
3A 07186 Oil Sight Glass/Gasket Loctite 5910 106 in.-lbs. (12 Nm)
5 07109 Plug 59 ft.-lbs. (80 Nm)
5B 08092 Plug w/Gasket 59 ft.-lbs. (80 Nm)
6 01010 Screw 110 in.-lbs. (12.5 Nm)
10 07114 Screw with Washer 132 in.-lbs. (15 Nm)
10A 07774 Hexagon Socket Screw 132 in.-lbs. (15 Nm)
15 08390 Connecting Rod Screw 97 in.-lbs. (11 Nm)
16D 08399 Tension Screw Loctite 243 21 ft.-lbs. (28 Nm)
32 08373 Plug Loctite 243 125 ft.-lbs. (170 Nm)
34 06494 Cap Screw Lightly Oil Threads 30 ft.-lbs. (40 Nm)

6
To Check Valves
2. Remove the exposed
spring tension cap
(30) from valve seat by
pushing it sideways with
a screwdriver. Remove
spring tension cap (30),
valve spring (29), and
valve plate (28).
30 29 28
4. Remove hexagon socket
screws (34) and remove
valve casing (26) by
pulling them frontwise
over the plungers (16).
1. Remove plugs (32) with
socket wrench.
3. Pull out valve seat (27) and
O-ring (31) with a valve puller.
Check O-ring for wear.
REPAIR INSTRUCTIONS - P470H PUMPS
5. Using two screwdriv-
ers, remove seal case
(21) out of the valve
casing (26) or inter-
mediate casing (25).
6. The exposed suction valve parts
are to be removed the same
way as the discharge valves
as described above. Check
valve components for wear and
damage. Check O-rings (21A,
31, 33). Replace worn parts.
Reassemble in same order.
Coat new o-rings with oil before
installation. Coat O-rings (25B)
with silicon grease and place
them in their recessses.Insert
seal cases (21) into valve casing
(26) before mounting the whole
unit. Slide valve casing (26)
over plungers. Tighten hexagon
socket screws (34) crosswise
and evenly at 36 ft-lbs. Tighten
plugs (32) at 125 ft.-lbs. (170
Nm).
lmportant: When extracting the
valve holders (22), make sure not
to scratch the outer bore diameter
as this is a sealing.
To Check To Check Seals and Plunger Pipe
7. Remove hexagon socket
screws (34) and remove
valve casing (26) by pulling
them frontwise over the
plungers (16).
8. Using two screwdrivers,
gently pry seal cases (21)
out of the valve casing
(26) or intermediate cas-
ing (25). Press grooved
rings (23) and support
rings (24) out of inter-
mediate casing (25) us-
ing a screwdriver. Check
O-rings (21A/25B). Ex-
amine seals (23). Replace
worn seals.

7
If oil leaks where the plungers (16) protrude out of the gear, gear seals (19) and plungers must
be examined and replaced if necessary.
a) Gear Seal: Remove oil plug (5) and drain oil. Remove valve casing (26) together with seal cas-
ing (25) as described above. Dismantle plunger pipe (I6B). Pry gear seal adaptor (20) out of the
crankcase using a screwdriver; take out gear seal (19) and replace it.
b) Plungers: Remove oil plug (5) and drain oil; remove crankcase cover (3). Remove valve casing
(26), seal casing 25), gear seal adaptors (20) and plunger pipes (16B) as described above. Remove
screws on conn-rods (15). Be careful not to mix up the connecting rod halves. Push connecting rod
shaft as far as possible into the crosshead guide. Take o󰀨 screws (10) and pry out bearing covers (7
& 8) with the help of a screwdriver. Take out crankshaft carefully threading it past the conrods (15),
making sure not to bend the connecting rods. Remove and dismantle connecting rods and plung-
ers (16). Replace worn parts. Reassemble and tighten tension screws (16D) at 248 in.-lbs. (28 Nm).
When reinstalling, rst insert connecting rods together with plungers. Thread in crankshaft. Then
push bearing covers (7 & 8) onto the crankshaft ends. Screw on bearing covers with screws (10).
Mount connecting rod halves and tighten screws (15) at 22 ft-lbs. Mount crankcase cover (3) togeth-
er with O-ring (4). Replace seal adaptors (20), seal casing (25) and valve casing (26). Replace eight
(8) hexagon screws (34) and tighten to 30 ft.-lbs. (40 Nm).
9. Check plunger surfaces (16). Damaged surfaces
lead to accelerated seal wear. Deposits of all
kinds must be removed from the plungers.
16
REPAIR INSTRUCTIONS - P470H PUMPS
Important: Plunger surfaces are not to be dam-
aged. If there are lime desposits in the pump,
care must be taken that the weep-return bore in
parts (25) and (26) ensure trouble-free weep-re-
turn.
10. If the plunger pipe (16B) is worn, remove
tension screw (16D) and remove together
with plunger pipe. Check and clean plung-
er (16A) surfaces and mount new plunger
pipe. Cover thread of tension screw (16D)
with a thin lm of Loctite and tighten care-
fully at 248 in.-lbs. (28 Nm).
Important: Glue must never come be-
tween the plunger pipe (16B) and the
centring sleeve (16C). The plunger pipe is
not to be strained by eccentric tightening of
the tension screw or through damage to the
front surface as this can lead to breakage.
11. When reassembling, tighten inner
hexagon screw (34) at 30 ft.-lbs. (40
Nm) in a crossing pattern (as shown on
left).
Gear and Plunger
666
42 7
5
3
1
8

GIANT INDUSTRIES, INC., 900 N. Westwood Ave., Toledo, Ohio 43607
PHONE [phone], FAX [phone], www.giantpumps.com
 Copyright 2022 Giant Industries, Inc.
04/22 P470H.indd
GIANT INDUSTRIES LIMITED WARRANTY
Giant Industries, Inc. pumps and accessories are warranted by the manufacturer to be free from defects in
workmanship and material as follows:
1. Five (5) years from the date of shipment for all pumps used in portable pressure
washers with NON-SALINE, clean water applications.
2. Two (2) years from the date of shipment for Giant pumps used in car wash
applications.
3. One (1) year from the date of shipment for all other Giant industrial and consumer
pumps.
4. Six (6) months from the date of shipment for all rebuilt pumps
5. Ninety (90) days from the date of shipment for all Giant accessories.
This warranty is limited to repair or replacement of pumps and accessories of which the manufacturer’s
evaluation shows were defective at the time of shipment by the manufacturer. The following items are NOT
covered or will void the warranty:
1. Defects caused by negligence or fault of the buyer or third party.
2. Normal wear and tear to standard wear parts.
3. Use of repair parts other than those manufactured or authorized by Giant.
4. Improper use of the product as a component part.
5. Changes or modications made by the customer or third party.
6. The operation of pumps and or accessories exceeding the specications set forth
in the Operations Manuals provided by Giant Industries, Inc.
Liability under this warranty is on all non-wear parts and limited to the replacement or repair of those products
returned freight prepaid to Giant Industries which are deemed to be defective due to workmanship or failure of
material. A Returned Goods Authorization (R.G.A.) number and completed warranty evaluation form is required
prior to the return to Giant Industries of all products under warranty consideration. Call (419)-531-4600 or fax
(419)-531-6836 to obtain an R.G.A. number.
Repair or replacement of defective products as provided is the sole and exclusive remedy provided hereunder
and the MANUFACTURER SHALL NOT BE LIABLE FOR FURTHER LOSS, DAMAGES, OR EXPENSES,
INCLUDING INCIDENTAL AND CONSEQUENTIAL DAMAGES DIRECTLY OR INDIRECTLY ARISING FROM
THE SALE OR USE OF THIS PRODUCT.
THE LIMITED WARRANTY SET FORTH HEREIN IS IN LIEU OF ALL OTHER WARRANTIES OR
REPRESENTATION, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES
OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND ALL SUCH WARRANTIES
ARE HEREBY DISCLAIMED AND EXCLUDED BY THE MANUFACTURER.
WARNING: This product might contain a chemical known to the State of California to cause cancer,
and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
MODEL P470H DIMENSIONS - INCHES (mm)