Jet Jhpb-20 Service manual

Operating Instructions and Parts Manual

Hydraulic Pipe Bender

Models: JHPB-20 (2-inch), JHPB-30 (3-inch)

WALTER MEIER (Manufacturing) Inc.

427 New Sanford Road

LaVergne, Tennessee 37086 Part No. M-331900

Ph.: 800-274-6848 Revision A1 04/2011

Warranty and Service

Walter Meier (Manufacturing) Inc., warrants every product it sells. If one of our tools needs service or repair, one of

our Authorized Service Centers located throughout the United States can give you quick service. In most cases, any

of these Walter Meier Authorized Service Centers can authorize warranty repair, assist you in obtaining parts, or

perform routine maintenance and major repair on your JET

tools. For the name of an Authorized Service Center in

your area call 1-800-274-6848.

MORE INFORMATION

Walter Meier is consistently adding new products to the line. For complete, up-to-date product information, check with

your local Walter Meier distributor, or visit waltermeier.com.

WARRANTY

JET products carry a limited warranty which varies in duration based upon the product (MW = Metalworking, WW =

Woodworking).

WHAT IS COVERED?

This warranty covers any defects in workmanship or materials subject to the exceptions stated below. Cutting tools,

abrasives and other consumables are excluded from warranty coverage.

WHO IS COVERED?

This warranty covers only the initial purchaser of the product.

WHAT IS THE PERIOD OF COVERAGE?

The general JET warranty lasts for the time period specified in the product literature of each product.

WHAT IS NOT COVERED?

Five Year Warranties do not cover woodworking (WW) products used for commercial, industrial or educational

purposes. Woodworking products with Five Year Warranties that are used for commercial, industrial or education

purposes revert to a One Year Warranty. This warranty does not cover defects due directly or indirectly to misuse,

abuse, negligence or accidents, normal wear-and-tear, improper repair or alterations, or lack of maintenance.

HOW TO GET SERVICE

The product or part must be returned for examination, postage prepaid, to a location designated by us. For the name

of the location nearest you, please call 1-800-274-6848.

You must provide proof of initial purchase date and an explanation of the complaint must accompany the

merchandise. If our inspection discloses a defect, we will repair or replace the product, or refund the purchase price,

at our option. We will return the repaired product or replacement at our expense unless it is determined by us that

there is no defect, or that the defect resulted from causes not within the scope of our warranty in which case we will,

at your direction, dispose of or return the product. In the event you choose to have the product returned, you will be

responsible for the shipping and handling costs of the return.

HOW STATE LAW APPLIES

This warranty gives you specific legal rights; you may also have other rights which vary from state to state.

LIMITATIONS ON THIS WARRANTY

WALTER MEIER (MANUFACTURING) INC., LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE

LIMITED WARRANTY FOR EACH PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OR

MERCHANTABILITY AND FITNESS ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW

LONG THE IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.

WALTER MEIER SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR

FOR INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF

OUR PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR

CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.

Walter Meier sells through distributors only. The specifications in Walter Meier catalogs are given as general

information and are not binding. Members of Walter Meier reserve the right to effect at any time, without prior notice,

those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason

whatsoever. JET

branded products are not sold in Canada by Walter Meier.

Table of Contents

Warranty and Service..........................................................................................................................2

Table of Contents ...............................................................................................................................3

Warning .............................................................................................................................................4

Specifications.....................................................................................................................................5

Unpacking..........................................................................................................................................6

Contents of Shipping Container........................................................................................................6

Contents of Hardware Bag...............................................................................................................6

Assembly...........................................................................................................................................7

Operation...........................................................................................................................................8

Securing the Pipe Bender ................................................................................................................8

Direction of the Pipe Bender.............................................................................................................8

When Using for the First Time..........................................................................................................8

To Bend A Pipe...............................................................................................................................8

Lubrication.........................................................................................................................................9

Troubleshooting..................................................................................................................................9

Parts..................................................................................................................................................9

Replacement Parts..........................................................................................................................9

Parts List – Models JHPB-20and JHPB-30......................................................................................10

Parts Breakdown – Models JHPB-20 and JHPB-30 .........................................................................12

Warning

1. Read and understand the entire owner's manual before attempting assembly or operation.

2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with

all of these warnings may cause serious injury.

3. Replace the warning labels if they become obscured or removed.

4. This pipe bender is designed and intended for use by properly trained and experienced personnel

only. If you are not familiar with the proper and safe operation of a pipe bender, do not use until

proper training and knowledge have been obtained.

5. Do not use this machine for other than its intended use. If used for other purposes, Walter Meier

(Manufacturing) Inc., disclaims any real or implied warranty and holds itself harmless from any injury

that may result from that use.

6. Always wear approved safety glasses/face shields while using this machine. Everyday eyeglasses

only have impact resistant lenses; they are not safety glasses.

7. Before operating this pipe bender, remove tie, rings, watches and other jewelry, and roll sleeves up

past the elbows. Remove all loose clothing and confine long hair. Non-slip footwear or anti-skid floor

strips are recommended. Do not wear gloves.

8. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.

9. Check damaged parts. Before further use of the machine, a guard or other part that is damaged

should be carefully checked to determine that it will operate properly and perform its intended

function. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting

and any other conditions that may affect its operation. A guard or other part that is damaged should

be properly repaired or replaced.

10. Provide for adequate space surrounding work area and non-glare, overhead lighting.

11. Keep the floor around the machine clean and free of scrap material, oil and grease.

12. Keep visitors a safe distance from the work area. Keep children away.

13. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are

careless acts that can result in serious injury.

14. Maintain a balanced stance and do not overreach or use excessive force to perform any machine

operation.

15. Use the right tool. Do not force a tool or attachment to do a job for which it was not designed. The

right tool will do the job better and safer.

16. Use recommended accessories; improper accessories may be hazardous.

17. Maintain tools with care and clean for the best and safest performance. Follow instructions for

lubricating and changing accessories.

Familiarize yourself with the following safety notices used in this manual:

This means that if precautions are not heeded, it may result in minor injury and/or

possible machine damage.

This means that if precautions are not heeded, it may result in serious injury or possibly

even death.

- - SAVE THESE INSTRUCTIONS - -

Specifications

Model.........................................................................JHPB-20............................................. JHPB-30

Stock Number .............................................................. 331900................................................ 331910

Pipe Size Capacity (in.).................................................. 1/2 – 2................................................. 1/2 – 3

Max. Pipe Wall Thickness (in.)..............................................1/5.....................................................6/25

Maximum Load (Tons) ............................................................9........................................................20

Piston Stroke (in.)...........................................................10-1/4..................................................12-5/8

Ram Diameter (in.) ...........................................................1-3/4....................................................2-1/3

Net Weight (lb）.................................................................115......................................................260

Shipping Weight (lb)............................................................198......................................................370

Assembled Dimensions (LxWxH)(in.)...........38-3/4 x 26 x 28-3/4....................................40 x 35 x 28-3/4

The above specifications were current at the time this manual was published, but because of our policy of

continuous improvement, Walter Meier (Manufacturing) Inc., reserves the right to change specifications at

any time and without prior notice, without incurring obligations.

Unpacking

Contents of Shipping Container

1 Bending Die (A) – see also Table 1

1 Hardware Bag (B)

1 Hydraulic Pump Unit (C)

1 Tripod Seat (D)

1 Swaging Block (E)

1 Support Assembly (F)

1 Hinge Pin (G)

1 Upper Wing Plate (H)

1 Lower Wing Plate (J)

1 Handle (K)

3 Tripod Leg (L)

3 Tripod Pole Base (M)

Bending

Die Size

Model

JHPB-20 (2-in) JHPB-30 (3-in)

01/2" x x

03/4" x x

01" x x

01-1/4" x x

01-1/2" x x

02" x x

02-1/2" x

03" x

Table 1

Table 1 lists the bending die sizes that are included

with each hydraulic pipe bender model.

Contents of Hardware Bag

4 Double-Ended Threaded Stud (M)

4 M12 Lock Washer (N)

4 M12 Hex Nut (O)

1 Vented Oil Plug (P)

1 O-Ring (Q)

1 Cotter Pin (R)

Figure 1: Shipping Contents

Figure 2: Contents of Hardware Bag

Assembly

Referring to Figure 1:

1. Screw three tripod pole bases (M) onto three

tripod poles (L).

2. Screw tripod poles (M) into the tripod seat (D).

For steps 3 – 13 refer to Figure 4.

3. Pull the knob (D

, Fig. 3) on the tripod seat and

4. Insert the support assembly (F) onto the tripod

seat (D) by first pulling out the knob (D

, Fig. 3)

on the tripod seat (D). When the knob is

released, the support assembly will be secured

to the tripod seat.

5. Screw four double-ended threaded studs (M)

(short-threaded end) into bottom of the housing

base (C

) of the hydraulic pump unit.

6. Place the hydraulic pump unit (C) onto the

lower wing plate such that the studs protrude

through the bottom of the wing plate.

Note: The alignment holes in the wing plate

and pump unit must line up. If not, flip the wing

plate over.

7. With the assistance of a second person, lift the

hydraulic pump unit (C) and lower wing plate

(J) as a unit and place it on top of the support

assembly (F).

The studs (M) should protrude through the

bottom of the support assembly plate (F) and

the spring pin should fit into the alignment

holes of the wing plate (J) and pump unit (C).

8. Secure the pump unit (C) and wing plate (J) to

the support assembly (F) with four each M12

lock washers (N) and M12 hex nuts (O).

Tighten with a 7/8" wrench.

9. Mount swaging blocks (E) onto the end-holes

of the wing plate (J). These will be adjusted as

required later.

10. Place the upper wing plate (H) onto the pump

unit (C) and swaging blocks (E).

11. Insert hinge pin (G) though the upper wing

plate and pump unit hinge holes and secure the

hinge pin with cotter pin (R).

12. Insert the handle (K) into the handle cap (C

)

on the pump unit.

13. Remove the factory installed oil plug (P) and

replace with the vented oil plug (P) and rubber

O-ring (Q) from the hardware bag.

Important: Failure to replace the oil plug will

cause improper operation.

Assembly is complete and the pipe bender is ready

for use.

Figure 3

Figure 4

Operation

Securing the Pipe Bender

The JHPB-20 and JHPB-30 Hydraulic Pipe Bender

can be secured to the floor with three bolts through

the holes on the tripod pole bases if desired for

increased stability.

Direction of the Pipe Bender

The direction of the pipe bender can be adjusted by

pulling out the knob on the tripod seat (D

, D,

Fig. 3) and rotating the pump unit. When the knob

is released, the pipe bender can still be adjusted.

The machine can only be fixed in one position by

rotating the pipe bender until the position rod resets

into the indent in the base of the tripod seat.

When Using for the First Time

If the pipe bender is being used for the first time, be

sure to change the shipping plug on the top of the

pump unit (see Assembly Step 13) with the oil plug

in the hardware bag, which contains a vent hole on

the top. Failure to remove the shipping plug will

cause improper operation. The shipping plug

comes without the vent hole to prevent oil leakage

during the shipment.

To Bend A Pipe

Figure 5

To Bend a Pip

Referring to Figure 5:

1. Raise the handle (A).

2. Raise the upper wing plate (B).

3. Select the suitable bending die (C) for the pipe

to be bent and slip it on the end of the cylinder

ram (D).

4. Select the positions of the swaging blocks (E)

for the pipe. For shorter pipes, position the

swaging blocks closer together to account for

the pipe shortening during the bending

process.

5. Turn the swaging blocks (E) so the notch that

best fits the diameter of the pipe to be bent

faces in the direction of the bending die.

Note: Lubricating the swaging blocks will

promote ease of movement.

6. Place the pipe you are going to bend.

Note: Keeping the bending die (C) lubricated

will promote easy removal of pipe after the

bend is made.

7. Lower the upper wing plate (B).

8. Close the release valve (G) by turning clock-

wise.

9. Pump the handle (A) to bend the pipe.

Note: Applying heat to the pipe will promote

ease in bending.

When applying heat to the pipe,

the pipe must be free of oil and other flammable

material.

10. When the bend has been made, release the

pressure by opening the release valve (G). The

ram will automatically retreat.

Lubrication

Check the oil level regularly by removing the

vented oil plug found on the top of the pump

housing. When changing or adding oil, fill the tank

through the Cap Screw. Normally about 820 ml of

ISO VG of 22 or ISO VG of 32 hydraulic oil

recommended for model JHPB-20 Hydraulic Pipe

Bender and 1700 ml for model JHPB-30. Lightly

grease all moving parts if necessary.

Troubleshooting

Problem Probable Cause Remedy

Hydraulic unit

does not lift,

Pipe Bender

does not work.

1. Oil low in tank.

2. Air in pump.

3. Worn UN-Ring in ram

cylinder.

4. Function Fail.

1. Make sure there is no oil leaka

e. Check that the

oil level is full.

2. Pump the handle repeatedly until the ram piston

stops to lift. Tilt the pump housing to about 45

degrees. Loose the release valve to allow any

trapped air to escape from the oil tank.

3. Change the UN-Ring (Parts List Item 39).

4. Check if the steel bolt (Parts List Item 43)

touching the release valve (Parts List Item 50)

fell off. If so, tighten the release valve clockwise.

Piston does not

advance or

retract smoothly.

ir inside the oil tank.

2. Low oil in the oil tank.

3. Incorrect oil type.

4. Debris or dirt in the oil

flow.

1. Pump the handle repeatedl

until the ram piston

stops to lift. Tilt the pump housing to about 45

degrees. Loose the release valve to allow any

trapped air to escape from the oil tank.

2. Fill oil.

3. Change to ISO VG of 22 or ISO VG of 32

hydraulic oil.

4. Flush the oil from inside the pump unit with

gasoline.

Leaka

e from

the Ram piston

or Plunger

Piston

Worn Seals Chan

e the seal kits inthe seal kits ba

Parts

Replacement Parts

Replacement parts are listed in the Parts List on the following pages. To order parts or reach our service

department, call 1-800-274-6848 Monday through Friday (see our website for business hours,

www.waltermier.com). Having the Model Number and Serial Number of your machine available when you

call will allow us to serve you quickly and accurately.

Parts List – Models JHPB-20and JHPB-30

Index No. Part No. Description Size Qty

1.............. JHPB20-1................Upper Wing Plate ...............................................................................1

................ JHPB30-1................Upper Wing Plate * .............................................................................1

2.............. JHPB20-2-1.............1/2” Bending Die...............................................1/2"............................1

................ JHPB20-2-2.............3/4" Bending Die...............................................3/4"............................1

................ JHPB20-2-3.............1” Bending Die..................................................1”...............................1

................ JHPB20-2-4.............1-1/4” Bending Die............................................1-1/4”.........................1

................ JHPB20-2-5.............1-1/2” Bending Die............................................1-1/2”.........................1

................ JHPB20-2-6.............2” Bending Die..................................................2”...............................1

................ JHPB30-2-7.............2-1/2” Bending Die *..........................................2-1/2”.........................1

................ JHPB30-2-8.............3” Bending Die * ...............................................3”...............................1

3.............. JHPB20-3................Snap Ring ..........................................................................................4

4.............. JHPB20-4................Shaft..................................................................................................2

................ JHPB30-4................Shaft *................................................................................................2

5.............. JHPB20-5................Swaging Block....................................................................................2

................ JHPB30-5................Swaging Block * .................................................................................2

6.............. JHPB20-6................Tripod Seat ........................................................................................1

7.............. JHPB20-7................Tripod Leg..........................................................................................3

8.............. JHPB20-8................Spring Pin........................................................M6x30........................1

9.............. JHPB20-9................Tripod Leg Base Foot..........................................................................3

10............ JHPB20-10..............Handle End Cap.................................................................................1

11............ JHPB20-11..............Handle Grip........................................................................................1

12............ JHPB20-12..............Handle...............................................................................................1

13............ JHPB20-13..............Handle Cap........................................................................................1

14............ JHPB20-14..............Rod ...................................................................................................1

15............ JHPB20-15..............Lower Wing Plate ...............................................................................1

................ JHPB30-15..............Lower Wing Plate *.............................................................................1

16............ JHPB20-16..............Hinge Pin...........................................................................................1

................ JHPB30-16..............Hinge Pin *.........................................................................................1

17............ JHPB20-17..............Spring Pin........................................................M6x32........................1

18............ JHPB20-18..............Cotter Pin...........................................................................................1

19............ JHPB20-19..............Joint Shaft..........................................................................................2

20............ JHPB20-20..............Joint Pin.............................................................................................1

21............ JHPB20-21..............E-Ring ...............................................................................................6

22............ JHPB20-22..............Support Assembly...............................................................................1

................ JHPB30-22..............Support Assembly * ............................................................................1

23............ JHPB20-23..............Double-Ended Threaded Stud .............................................................4

................ JHPB30-23..............Double-Ended Threaded Stud *...........................................................4

24............ TS-2361121 ............Lock Washer ....................................................M12...........................4

................ TS-2361141 ............Lock Washer *..................................................M14...........................4

25............ TS-1540081 ............Hex Nut............................................................M12...........................4

................ TS-154009 ..............Hex Nut *.........................................................M14...........................4

26............ JHPB20-26..............Hydraulic Pump Unit...........................................................................1

................ JHPB30-26..............Hydraulic Pump Unit *.........................................................................1

27............ JHPB20-27..............Socket Set Screw.............................................M16x25......................1

28............ TS-2238911 ............Socket Head Cap Screw...................................M8x100......................1

29............ JHPB20-29..............Copper Washer ..................................................................................1

30............ JHPB20-30..............Ram Piston ........................................................................................1

................ JHPB30-30..............Ram Piston *......................................................................................1

31............ JHPB20-31..............Spring................................................................................................1

................ JHPB30-31..............Spring *..............................................................................................1

32............ JHPB20-32..............Dust Seal...........................................................................................1

................ JHPB30-32..............Dust Seal *.........................................................................................1

33............ JHPB20-33..............Pump Housing Cap.............................................................................1

................ JHPB30-33..............Pump Housing Cap * ..........................................................................1

34............ JHPB20-34..............O-Ring.............................................................59x3 ..........................1

................ JHPB30-34..............O-Ring *...........................................................78.97x3.53.................1

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