Giant MP4130HTC User Manual

Model
MP4130HT(C)

Triplex Ceramic
Plunger Pump
Operating Instructions/
Repair and Service
Manual

Contents:

Installation Instructions: page 2
Pump Specifications: pages 3
Exploded View: page 4
Parts List / Kits: page 5
Repair Instructions: page 6-10
Torque Specifications: page 10
Trouble Shooting: page 11
Dimensions: back page
Warranty Information: back page

INSTALLATION INSTRUCTIONS

Installation of the Giant Industries, Inc., pump
is not a complicated procedure, but there are
some basic steps common to all pumps. The
following information is to be considered as a
general outline for installation. If you have
unique requirements, please contact Giant
Industries, Inc. or your local distributor for
assistance.

The MP4130HT has been especially constructed for
pumping hot water e.g. steam boiler storage. The plunger
seals (40) on the water side are made out of a high
temperature-resistant material. Rinsing chambers behind
the high pressure seals through which cold water can flow
thus increasing the life of the seals are available upon
request (MP4130HTC). The cold water connections (59)
are suited to the Ermeto-pipe 6mm dia. The operator can
use hose nipples instead if he wishes. There are 1/8"
threads in the seal sleeve for this purpose.
The cold water (50oF - 86oF) can be guided into the pump
from either side and flows out on the opposite side e.g.
into a drain. The cold water flow rate should be at least

0.13 GPM and must be put into use as soon as the pump is

NPSHR (FT-HEAD)

RPM

started. If the cold water doesn’t start flowing immediately the pump
is put into operation, the ceramic plunger (29B) in particular, could
crack under the cold shock.

Important! If the location of the pump doesn’t allow for cooling,
on no account are the connections to be closed up because this is
where water from the high pressure seals has to drip out. In this
case, the holes can be used to fill the rinsing chambers with grease
suitable for high temperatures, by means of a grease gun, thus
assuring that the seals are always well greased. In the case of
water temperautre above 320F, we strongly recommend the
cold-water rinse.

Plant Lay-Out

For perfect functioning of the pump, the following points must be
adhered to.

a) Pressure in Suction Side

The stipulated NPSHR is the minimum required pressure above
vapour pressure of the medium and is never to fall short of this
figure.Temperature and vapour pressure of the medium, the geodeti­cal height of the location, the flow rate and loss of friction in the
suction line, must all be taken into consideration. It may be neces­sary to install a booster pump (centrifugal pump) in the suction line.

b) Pulsation

Due to its construction, the plunger pump creates pulsation in the
suction and discharge lines. Suction pulsation in particular must be
dampened in order to prevent resonance in the suction line which in
turn, causes cavitation. Therefore, the pump is never to be con­nected by a rigid pipe but rather by a flexible hose (not reinforced by
steel), and if possible 1.5 to 2 times wider than the suction connec­tion. If a booster pump is used, the hose is to be attached between
the booster pump and the high pressure pump.
If several pumps are used, each pump must have its own suction
line. If this can’t be done, a suction air chamber or a suction flow
stabilizer must be installed in front of each pump. The bladder in the
stabilizer is to be pretensioned on location.
Depending on the lay-out of the plant, a pressure accumulator may
be necessary on the discharge side. This pressure accumulator must
be installed right behind the discharge outlet of the high pressure
pu We recommend the use of only one pressure accumulator in
discharge line in order to avoid irritation which could be caused by
the different pre-tension levels in the accumulators. Gas-tension in
both the suction flow stabilizer and in the pressure accumulator are
to be checked regularly.

Finally, remember that high pressure operation in a pump system has many advantages. But, if it is used carelessly
and without regard to its potential hazard, it can cause serious injury.

IMPORTANT OPERATING CONDITIONS

Failure to comply with any of these conditions invalidates the warranty.

1. Prior to initial operation, add oil to the crank­case so that oil level is between the two lines on
the oil dipstick. DO NOT OVERFILL.

2. Pump operation must not exceed rated
pressure, volume, or RPM. A pressure relief
device must be installed in the discharge of the
system.

Use SAE 85W - 140 Industrial Gear Oil.

3. Acids, alkalines, or abrasive fluids cannot be

Crankcase oil should be changed after the

first 50 hours of operation, then at regular

pumped unless approval in writing is obtained

before operation from Giant Industries, Inc.
intervals of 500 hours or less depending on
operating conditions.

4. Run the pump dry approximately 10 seconds

to drain the water before exposure to freezing

2

temperatures.

PULLEY

PULLEY

Specifications

Model MP4130HT(C)

Volume ....................................................................................................... Up to 629 GPH (10.5 GPM)

Discharge Pressure ..................................................................................... Up to 1200 PSI

Inlet Pressure............................................................................................See NPSHR chart (pg.2)

Speed ......................................................................................................... Up to 750 RPM

Plunger Diameter ........................................................................................ 30mm

Plunger Stroke ............................................................................................ 26mm

Crankcase Oil Capacity .............................................................................. 32 fl.oz.

Temperature of Pumped Fluids.................................................................... Up to 220 oF

Inlet Ports ................................................................................................... (2) 1" BSP

Discharge Ports .......................................................................................... (2) 3/4" BSP

Pulley Mounting .......................................................................................... Either side

Shaft Rotation ....................................................................................Top of Pulley Towards Fluid End

Weight ........................................................................................................ 72 lbs.

Crankshaft Diameter .................................................................................. 28mm

PULLEY INFORMATION

Pulley selection and pump speed are based on a
1725 PRM motor and "B" section belts. When
selecting desired GPM, allow for a ±5% tolerance
on pumps output due to variations in pulleys, belts
and motors among manufacturers.

1. Select GPM required, then select appropriate
motor pulley from the same line.

2. The desired pressure is acheived by selecting the
correct nozzle size that corresponds with the pump
GPM.

We recommend that a 1.1 service factor be specified
when s electing an electric motor as the power source.
To compute specific pump horsepower requirements,
use the following formula:

HORSEPOWER INFORMATION

HP = (GPM X PSI) / 1440

MP4130HT(C) PULLEY SELECTION AND HORSEPOWER

REQUIREMENTS

PUMP

9.75" 2.50" 400 5.6 335 1.2 2.3 2.8 3.5 4.7

9.75" 3.00" 500 7.0 419 1.5 2.9 3.5 4.4 5.8

9.75" 3.60" 600 8.4 503 1.8 3.5 4.2 5.3 7.0

9.75" 4.15" 700 9.8 587 2.0 4.1 4.9 6.1 8.2

9.75" 4.45" 750 10.5 629 2.2 4.4 5.3 6.6 8.8

MOTOR

RPM GPM GPH 300 PSI 600 PSI 725 PSI 900 PSI 1200 PSI

3

Exploded View - MP4130HT(C)

4

MP4130HT(C) PARTS LIST

ITEM PART# DESCRIPTION QTY.

1 06100 Crankcase 1
2 13000 Oil Filler Plug Assembly 1
4 07243 Cover, Crankcase 1
5 07244 O-Ring 1
8 01008 Oil Dip Stick Assembly 1
9 01009 O-Ring, Dip Stick 1
10 01010 Screw, Crankcase Cover 4
11 01011 Spring Washer 4
12 07109 Oil Drain Plug, G 1/2" 1
13 07182 Gasket 1
14 07245 Bearing Cover 2
15 07247 Seal, Crankshaft 2
16 07627 O-Ring 2
17 07114 Hex Screw, Bearing Cover 9
20 07248 Roller Bearing, Tapered 2
20A 07249 Fitting Disc 2
21 07250 Shaft Protector 1
22 07251 Crankshaft 1
23 07252 Key 1
24 07253 Connecting Rod 3
24A&B 07122 Hex Screw w/washer 6
25 07254 Crosshead, Complete 3
28 07255 Crosshead Pin 3
29A 07256 Centering Sleeve 3
29B 07261 Plunger Pipe 3
29C 06134 Tension Screw 3
29D 13008 Copper Ring 3
29E 06135 Plunger Extension 3
30 06136 Oil Scraper 3
31 07260 Crankcase Oil Seal 3

ITEM PART# DESCRIPTION QTY.

36 07267 Snap Ring 3
39 07271 Pressure Ring 6
40 06137 V-Sleeve 9
41 07273 Support Ring 6
42 07353 Tension Spring 3
42A 06103 Tension Plug, M42 x 1.5 3
42B 07354 O-Ring 3
43 06138 Valve Casing 1
44 07280 Valve Seat 6
44A 07281 O-Ring 6
45 07282 Valve Plate 6
46 07283 Valve Spring 6
47 07284 Spring Retainer, Discharge 3
48 07356 Plug, Brass, M36 x 1.5 3
48A 07332 O-Ring 6
49 06139 Stud Bolt 6
49A 06140 Fitting Sleeve with Extension 2
49B 06141 Extension 4
49C 07289 Centering Sleeve 2
50 13042 Hexagon Nut 6
50A 13043 Disc 6
51 06110 Spacer Pipe 3
52 06112 Inlet Valve Housing 3
54 06115 Inlet Spring Tension Disc 3
55 12249 Plug, G 1" 1
56 12248 Plug, G 3/4" 1
57 13020 Disc for Crankshaft 1
59 06588 Screw-In Pipe Connection 2
62 06142 Tin Lid 1

Seal Repair Kit

Part # 09532

Item # Qty. Part # Description
40 9 06137 V-Sleeve
42B 3 07354 O-Ring

MP4130HT(C) REPAIR KITS

Valve Assembly Kit

Part # 09533

Item # Qty. Part # Description
44 6 07280 Valve Seat
44A 6 07281 O-Ring
45 6 07282 Valve Plate
46 6 07283 Valve Spring
47 3 07284 Spring Retainer, Discharge
48A 3 07332 O-Ring
54 3 06115 Inlet Spring Tension Disc

5

REPAIR INSTRUCTION - MP4130HT(C)

Disassembly sequence of the GIANT MP4130HT(C) Series Pumps

1. With a 27mm wrench,

remove the three discharge
plugs (#48) and three inlet
plugs (#42A) from the
manifold (#43).

47 46 45 44A 44

4. Inspect all parts, especially the seating surface of

the valve plate (#45), and replace as necessary.

2. Inspect the plug o-rings
(#48A and #42B) and
replace as necessary.

3. Using a valve puller (avail­able from Snap-On-Tools),
remove the valve assembly
(#44 - #47).

5. Remove the six manifold

stud nuts (#50) with a
19mm wrench. Remove
the spring washers
(#50A).Tap the back of the
manifold with a rubber
mallet to dislodge and slide
it off the studs (#49).

6. To remove the inlet valve
assembly, insert a 13mm
socket with extension
through the rear of the
inlet manifold (#43) port
and tap it firmly with a
hammer. This will force
the tension spring (#46),
valve housing (#52) and the
remainder of the inlet valve
assembly out through the
front of the inlet port.

51 44 44A 45 46 52

7. Pull the inlet valve assembly apart for inspection. Any resistance
may be overcome by placing the valve housing (#52) in a brass
jawed vise and carefully tapping the back of the valve plate (#45)
with a screwdriver. Remove the spacer pipe (#51) valve seats
(#44), o-ring (#44A), valve plate (#45), spring (#46), replace them
as necessary.

6

36 39 40 41

8. From the back of the
manifold (#43), remove the
packing assembly (#'s 42,
41, 40, and 39) by tapping
assembly out from the
back to the front.

10. Note: The following

procedure is only neces­sary if a stud bolt (#49)
has been damaged and
must be replaced. To

remove the manifold studs
(#49), place a stud nut
(#50), lock washer (#50A),
and second nut on each
stud. Tighten the nuts
against each other. Hold
the front nut with one
wrench, and remove the
stud bolt by turning the rear
nut counterclockwise with
another wrench. To
reassemble, turn the front
stud bolt nut clockwise.

9. Turn the manifold (#43) over and remove the rear v-sleeve snap
ring (#36). Remove rear pressure ring (#39) , rear v-sleeve

(#40) and rear support ring (#41). These parts should slide
out with little resistance. If necessary, a screwdriver may be used
to pry outward. Replace all rubber parts and inspect the metal
parts for wear.

11. To remove the ceramic plungers, turn the plunger bolt (#29C)
counterclockwise with a 13mm socket. Use a steady torque to
prevent ceramic plunger sleeve damage. Loosen and remove
the plunger bolt assembly (#29C and #29D) and replace the
seal washer (#29D).

31

11a. Inspect the crankcase oil

seals (#31) for evidence of
leaking. If there is oil on
the crankcase (#1) at the
sight of the oil seals, they
must be replaced. The oil
seals are replaced after
removing the crosshead/
plunger assembly (#25) as
described below.

Contact Giant Industries for service school

information. Phone: [phone]

7

Gear End Disassembly

Note: Make certain that the plungers (29B) have been removed before starting the following sequence.

12. Make sure the oil is drained from the pump before removing the crankcase cover (#4). Remove all screws (#10). Inspect the
crankcase cover o-ring (#5) for damage and replace it as necessary.

13. Remove the connecting rod screws and washers (#'s 24A and 24B) with a 6mm allen wrench. Remove the back halves of each
connecting rod (#24) . Push the connecting rods down as far as possible into the crankcase (#1) housing. Note that the

connecting rod halves are numbered (or colored) and that the numbers (or colors) must be matched for reassembly.

14. Remove the crankshaft bearing cover screws (#17) with a 13mm wrench. Remove the key (#23) from the crankshaft (#22).

15. Remove the bearing cover (#14) and any shims (#20A) if any. Remember to replace shims on the same side of the crankcase

(#1) during the reassembly.

16. Steady the pump gear end and, using a rubber mallet, tap the crankshaft (#22) from one side. The far side bearing race will be
removed and the near side race will remain in the crankcase. The roller bearings (#20) will remain on the crankshaft. When
both ends are free, the crankshaft can be removed by hand.

17. To remove the remaining bearing race, place a dowel against the inside edge of the race and tap it out with a rubber mallet.
This is done only if the race wear surface has been damage.

18. Inspect the bearing race removed with the crankshaft (#22) and replace if wear surface is damaged.

19. Note: The following procedure is only necessary if the inspection shows evidence of heavy wear. Inspect the crankshaft
(#22) and bearings (#20) for wear. To remove the roller bearings from the crankshaft, use a three inch push puller with a pulley
attachment. To remount the bearings, tap the bearings down the well-lubricated crankshaft with the Giant Bearing Tool. Be
sure that the bearing is firmly seated.

20. Remove the connecting rod (#24) with the attached crosshead/plunger assembly (#25) from the crankcase (#1) by pulling it
straight out. The oil seals (#31) may now be removed by tapping them out through the front of the crankcase. Be careful not
to damage the snap ring.

21. Inspect the surfaces of the crosshead/plunger assembly (#25) and connecting rods (#24) for heavy scoring or galling due to
poor lubrication. Check for play at the joint between connecting rod crosshead/plunger assembly.

22. To remove the crosshead pin (#28) from the crosshead/plunger assembly (#25), the assembly should be positioned in such
a manner to prevent damage to the crosshead when driving the pin out. The crosshead pin can be driven out by tapping on
the tapered side of the pin

Reassembly sequence

Note: Always take time to lubricate all metal and nonmetal parts with a light film of oil before reassembly. This step will help

ensure a proper fit, at the same time it will protect the pump nonmetal parts (elastomers) from cutting and scoring.

23. Take the crosshead/plunger rod assembly and insert the connecting rod (#24) into the crosshead/plunger assembly (#25).
Drive the tapered end of the crosshead pin (#28) into the beveled side of the crosshead and through the connecting rod
completing the assembly.

Note: The crosshead pin should not extend beyond either side of the crosshead in order to prevent damage to the crosshead

bore of the crankcase.

24. Inspect the crankcase crosshead guides for any possible damage.

25. Replace the connecting rod (#24), crosshead/plunger rod assembly (#25) into the crankcase (#1).

26. If removed previously, replace the far side bearing race into the crankcase. Tap with a rubber mallet until the edges are flush
with the crankcase surface.

27. Remove the old crankshaft seal (#15) from the bearing cover (#14). Lubricate the edges of the new seal and install using the
standard Giant Bearing Tool. Remove the bearing tool and tap around the perimeter of the seal with a rubber mallet to firmly
seat the seal. Position the far bearing cover on the crankcase (#1) and insert the cover bolts (#17). Tighten the cover evenly
to the crankcase, setting the bearing into position. Torque the cover bolts to 125 inch-pounds.

28. Insert the crankshaft (#22) with the mounted bearings (#20) through the near side of the crankcase (#1). Make certain that
the numbers (or colors) or the crankshaft correspond to the numbers (or colors) on the connecting rods (#24). Reinstall the
near side bearing race by inserting it into the crankcase. Supporting the crankshaft with one hand, tap the race with a rubber
mallet until the edge is flush with the crankcase.

NOTE: Contact Giant Industries for Service School Information. Phone: [phone]

8

29. Replace any shims (#20A) and position the bearing cover (#14) as before. Tighten the bearing cover bolts (#17)
evenly to position the bearing race. Torque the bolts to 125 inch-pounds. Once the crankshaft reassembly is
complete, oil the crankshaft
races freely before replacing the connecting rod (#24) end caps.

30. Reassemble the connecting rods (#24), matching the numbered (or colored) halves. Torque the connecting rod
bolts (#24A) to 250 inch-pounds.

31. To replace the oil seal (#31) apply locktite to the outside edges of the seal and install from the front of the
crankcase (#1). The side of the seal with the spring must face the oil. Make sure that the face of the seal is flush
with the crankcase.

29B 29D 29C

32. Inspect the ceramic plungers (#29B) and replace them if

necessary. Clean the ends of the ceramic and remount onto the
crosshead/plunger assembly. Make certain that the end of the
plunger which is not counter-bored is facing the discharge
side of the pump. Install the seal washer (#29D) on the bolt
assembly.

33a.Torque the ceramic plunger

bolt assembly to 300 inch­pounds. If originally
removed, reinstall the stud
bolts (#49).

34. Install the rear support ring
(#41), rear v-sleeve (#40),
rear pressure ring (#39). In­stall the snap ring (#36).

36. Reassemble the discharge
valve assembly by placing
the valve plate (#45), spring
(#46), and spring retainer
(#47) on top of the valve seat
(#44). Press fit together.

33. Clean the bolt threads (#29C), apply
locktite, and remount.

39 40 40 41

35. Reinstall the pressure ring (#39), v­sleeves (#40) and support ring (#41)
into each plunger bore. Reinstall the
tension spring (#42).

9

37. Place the entire discharge as­sembly into discharge port
making certain the assembly
is properly seated. Install dis­charge plug (#48) and hand
tighten.

MP4130HT(C) TORQUE SPECIFICATIONS

Position Item# Description Torque Amount

10 01010 Screw, Crankcase Cover 125 ft-lbs.
17 07114 Hex Screw, Bearing Cover 125 in-lbs.

24A 07122 Hex Screw, Connecting Rod 250 in-lbs.

29C 07257 Bolt, Plunger 300 in-lbs.

50 07158 Nut, Manifold Stud 58 ft-lbs.

38. Reassemble the inlet valve
assembly in the reverse or­der of step #7. Make cer­tain all the components are
press fit together and that the
spring retainer (#54) is
slightly counter sunk in the
valve housing (#52). Grease
the o-ring (#53) and install it
on to the valve housing. Re­install the entire inlet valve
assembly into the manifold
(#43). install the tension
plugs (#42A) and tighten.

39. Again lubricate the plungers
(29B) and slide the manifold
(#43) gently and evenly over
the plungers. Press the mani­fold firmly into place against
the crankcase (#1). Install
the spring washer (#50A)
and tighten the manifold stud
nuts (#50) to 58 ft.lbs.

10

PUMP SYSTEM MALFUNCTION

MALFUNCTION

The Pressure and/or
the Delivery Drops

Water in crankcase

Noisy Operation

CAUSE

Worn packing seals
Broken valve spring
Belt slippage
Worn or Damaged nozzle
Fouled discharge valve
Fouled inlet strainer
Worn or Damaged hose
Worn or Plugged relief valve on pump
Cavitation

Unloader

High humidity
Worn seals

Worn bearings

Cavitation

REMEDY

Replace packing seals
Replace spring
Tighten or Replace belt
Replace nozzle
Clean valve assembly
Clean strainer
Repair/Replace hose
Clean, Reset, and Replace worn parts
Check suction lines on inlet of
pump for restrictions
Check for proper operation

Reduce oil change interval
Replace seals

Replace bearings, Refill crankcase
oil with recommended lubricant
Check inlet lines for restrictions
and/or proper sizing

Rough/Pulsating
Operation with
Pressure Drop

Pressure Drop at Gun

Excessive Leakage

Worn packing
Inlet restriction

Accumulator pressure
Unloader
Cavitation

Restricted discharge plumbing

Worn plungers
Worn packing/seals
Excessive vacuum
Cracked plungers
Inlet pressure too high

Replace packing
Check system for stoppage, air
leaks, correctly sized inlet plumbing
to pump
Recharge/Replace accumulator
Check for proper operation
Check inlet lines for restrictions
and/or proper size

Re-size discharge plumbing to
flow rate of pump

Replace plungers
Adjust or Replace packing seals
Reduce suction vacuum
Replace plungers
Reduce inlet pressure

High Crankcase
Temperature

Wrong Grade of oil
Improper amount of oil in crankcase

11

Giant oil is recommended
Adjust oil level to proper amount

MP4130HT(C) DIMENSIONS (mm)

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. For portable pressure washers and car wash applications, the discharge manifolds
will never fail, period. If they ever fail, we will replace them free of charge. Our other pump
parts, used in portable pressure washers and in car wash applications, are warranted
for five years from the date of shipment for all pumps used in NON-SALINE, clean
water applications.

2. One (1) year from the date of shipment for all other Giant industrial and consumer
pumps.

3. Six (6) months from the date of shipment for all rebuilt pumps.

4. 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 modifications made by the customer or third party.

6. The operation of pumps and or accessories exceeding the specifications 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 [phone] 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.

GIANT INDUSTRIES, INC., 900 N. Westwood Ave., P.O. Box 3187, Toledo, Ohio 43607
PHONE [phone], FAX [phone], www.giantpumps.com

 Copyright 2001 Giant Industries, Inc.