1U-9001 and 1U-9002 Automatic Hone Tooling{0599, 0677, 0738, 7562, 7562} Caterpillar

Caterpillar Products: All

Introduction

Important Safety Information

Illustration 1	g02139237
Think Safety

Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools to perform these functions properly.

Improper operation, lubrication, maintenance, or repair of this product can be dangerous and could result in injury or death.

Do not operate or perform any lubrication, maintenance, or repair on this product until you have read and understood the operation, lubrication, maintenance, and repair information.

Safety precautions and warnings are provided in this manual and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons.

The hazards are identified by the quote Safety Alert Symbol quote and followed by a quote Signal Word quote such as "DANGER", "WARNING", or "CAUTION". The Safety Alert "WARNING" label is shown below.

A non-exhaustive list of operations that may cause product damage are identified by "NOTICE" labels on the product and in this publication.

Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The warnings in this publication and on the product are, therefore, not all inclusive. If a tool, procedure, work method, or operating technique that is not recommended by Caterpillar is used, the operator must be sure that the procedures are safe. The operator must also be sure that the product will not be damaged or made unsafe by any unspecified procedures.

The information, specifications, and illustrations in this publication are based on information that was available at the time that the publication was written. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete and most current information before you start any job.

When replacement parts are required for this product Caterpillar recommends using Caterpillar replacement parts or parts with equivalent specifications including, but not limited to, physical dimensions, type, strength, and material.

Literature Information

This manual contains safety information, operation instructions and maintenance information and should be stored with the tool group.

Some photographs or illustrations in this publication may show details that can be different from your service tool. Guards and covers might have been removed for illustrative purposes.

Continuing improvement and advancement of product design might have caused changes to your service tool, which are not included in this publication.

Whenever a question arises regarding your service tool or this publication, consult Dealer Service Tools (DST) for the latest available information.

Safety Section

The Safety section lists basic safety precautions.

Read and understand the basic precautions listed in the Safety section before operating or performing maintenance and repair on this service tool.

General Information Section

The General Information section describes tooling functions and features. The section provides useful information on individual parts, additional tooling, and resources.

Operation Section

The Operation section is a reference for the new operator and a refresher for the experienced operator.

Photographs and illustrations guide the operator through correct procedures for using the tool group.

Operating techniques outlined in this publication are basic. Skill and techniques develop as the operator gains knowledge of the service tool and tool capabilities.

Maintenance Section

The Maintenance section is a guide to tool inspection, cleaning, storage, and tool disposal

Safety Section

Safety Icon Nomenclature

Personal Protection/Important Information

Illustration 2	g02140175
Personal Protection/Important Information

Prohibited Action

Do not drill

Do not weld

Hazard Avoidance

Crushing hazard

Electrical hazard

Pinch point

Safety alert symbol

General Information Section

Introduction

Illustration 3	g02724873
1U-9001 or 1U-9002 Automatic Hone Group

The manual hone group can be used to hone the inside diameter of hydraulic cylinders or other similar parts. Accessories are also available to convert the manual hone into an automatic hone.

Honing heads are available to refinish cylinders having bore diameters of 63.5 to 305.0 mm (2.50 to 12.0 inch). Optional tooling can be obtained that allows honing inside diameters of 533.4 mm (21.0 inch).

The manual hone group was designed to lightly hone cylinder bores and remove shallow surface scratches. Light honing generally increases the cylinder inside diameter no more than 0.05 mm (.002 inch). The manual hones the bore oversize and increases the inside diameter up to 1.52 mm (.060 inch).

The automatic hone group attachments convert the manual hone into a production machine tool with automatic functions which eliminates most manual effort in the honing process. The automatic hone will lightly hone cylinders, but is especially suited for stock removal up to 1.52 mm (.060) from the inside diameter of the bore.

Refer to Illustration 4 for the overall floor-space requirements for the hone.

Illustration 4	g02724909
Manual and automatic hone floor-space requirements.

Hone Tooling Assembly

Honing Head

Illustration 5	g02725022
Master Holder Set. Refer to Table 1 for part numbers (1) Holder (2) Stones (3) Guides

1. Select a stone set according to the size of the cylinder bore, refer to Table 1. Use stones (2) and guides (3) only as matched sets. Because of uneven wear, do not mix used stones and guides from different sets.

   Note: A 9U-6749 Double Length Master Holder is available for bore sized of 203 to 305 mm (8 to 12 inch).

2. If the bore size requires holders (1) , install stones (2) and guides (3) in the holders and tighten the set screws. The stones and guides cannot be installed backwards because the mounting pins are different. sizes. Otherwise, install the stones and guides directly into the stone support.

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Illustration 6	g03397850
(4) Hone Body (5) Pinion (6) Release Ring

3. Pull back on the release ring (6), tilt the hone body (4), and remove pinion (5) from the hone body.

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Illustration 7	g03397870
Hone Group with Stone Support (7) .

4. Use a stone support for bore sizes of 152 mm (5.9 inch) and larger. If the bore size requires the use of stone support (7), install the support on the hone body so the end marked "top" faces the hone drive shaft.

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Illustration 8	g03398330
Insert Master Holder Set into the Hone Body (4) Hone Body (8) Rack (9) Hole Marked "X"

5. Insert the master holder set into the holes marked "X" (9) on hone body (4) so racks (8) face the center of the hone body. If properly installed, the racks of opposing stones and guides will face each other. See Illustration 8.

6. Completely compress all the stones and guides into the body and install pinion (5) .

7. Pull back on release ring (6), tilt and align the hone body (4), and allow the tang to engage the pinion. See Illustration 9

Illustration 9	g03398370
(4) Hone Body (5) Pinion (6) Release Ring

Note: The stone assembly and guides can be installed backwards. Make sure that the stone assembly and guides are installed in the holes marked "X" with their racks facing the center of the hone body.

Shaft Extension

Illustration 10	g03398378
Hone Group (1) Shaft Extensions (2) Feed Assembly

1. Depending on the length of the bore to be honed, one of more shaft extensions (1) may be necessary.

2. Measure the length of the cylinder bore.

3. Select a shaft extension that will allow the honing head to reach the bottom of the bore without contact between feed assembly (2) and the open end of the cylinder.

4. Remove the four shaft bolts nearest the honing head and separate the shaft extension from the head.

5. Align the shaft extension drive tang and position the shaft extension between the honing head and the feed assembly. Install the extension with eight bolts rather than four.

Drill Support Stand

Illustration 11	g03398398
Drill Support Stand

Because the hone drill motor is heavy and can create considerable torque, manual hone tooling should only be used when mounted in a fixture or support.

The 9U-6476 Drill Support Stand (1) precisely guides the hone head into the cylinder bore. The rail carries the weight of all honing components, absorbs toque, and is adjustable for cylinder bores from 63.5 mm (2.50 inch) to 406.4 mm (16.0 inch). The stand can hone cylinders up to 3.6 m (12 ft) in length.

Available in kit form, the 9U-6476 Drill Support Stand is a dealer-assembled kit that requires only attaching the legs by welding. The carriage is pre-drilled to the hole pattern of 9U-6400 and 9U-5888 Drill Motors. An assembly drawing of the stand is included in this manual.

9U-6400 and 9U-5888 Drill Motors

9U-6400 (110V) and 9U-5888 (220V) Drill Motors are industrial-duty electric drills that are especially suited to the honing application. Both models have four speeds: two through a gear shifting mechanism and two through an electric switch in the drill's handle. The available speeds are 115, 160, 190, and 260 revolution per minute. Use Illustration 30 in Section ""Honing Operations" " of this manual to select motor speeds.

Drill Motor Mounting and Assembly

Illustration 12	g03398436
Illustration 12 does not include (4) Thrust Coupler. (1) Feed Assembly (2) Universal Joint (3) Clamp Coupler (4) Thrust Coupler ( 9U-6400 only) (5) Drill Motor (6) Adapter Plate (7) Jam Nut (8) Carriage (9) Screws

1. Modify the drill housing for better access to the gear shift selector.

   1. Remove four screws (9) .

   2. Pull the gear housing 6.4 mm (0.25197 inch) to 9.7 mm (0.38189 inch) away from the drill.

   3. Rotate the housing 180 degrees until the gear shift selector is on the same side as the drill handle.

   4. Install the housing with four previously removed screws.

Note: If the housing is pulled more than 6.4 mm (0.25197 inch) to 9.7 mm (0.38189 inch), the motor armature may be pulled away from the brushes. In that case, the brushes will have to be removed before the armature can be installed.

2. Align the tang of the Morse taper drive of 9U-6467 Thrust Coupler (4) with the slot of the Morse taper adapter and slide the coupler assembly onto the output housing of drill motor (5). Seat the Morse taper by tapping the coupler assembly with a plastic mallet.

3. Remove the hex adapter from the universal joint (2). Remove the drive pin from the yoke adapter as shown in Illustration 13. Thread the modified yoke adapter into the universal adapter. Thread the universal joint assembly into the feed assembly.

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Illustration 13	g03398596

4. Insert the end of the modified yoke adapter into clamp coupler (3) and tighten ALL screws.

5. If other motors are used, a universal joint must be used to allow for misalignment if the motor is installed in a rigid fixture.

Barrel Cradle Stand

Illustration 14	g03398623
(1) 9U-6477 Barrel Cradle Stand (2) 9U-6759 Oil Tank

Honing can create considerable rotating force. The 9U-6477 Barrel Cradle Stand (1) provides a method of support and clamping that prevents the cylinder from rotating. It can be used for honing all sizes of cylinders.

The barrel cradle stand is a dealer-assembled kit that requires only attaching the legs by welding. The stand uses ratchet-type load binder for clamping and has one fixed and one movable "V" block.

The stand is designed to work with 9U-6759 Oil Tank (2) and comes complete with fittings and a supply hose. It does not include the caster base shown (optional 4C-3896 Caster Base ). An assembly drawing of the stand is included in this manual.

It is recommended that the stand is anchored to the floor.

As an alternative, select either a sturdy workbench or table, preferably one fabricated from plate steel. The bench must be able to support the weight of the cylinder. Avoid the use of sheet-steel benches.

Honing Oil Supply

A continuous supply of honing oil to the honing head is essential to keep the stones cutting and the guides lubricated. A 9U-6759 Oil Tank has been designed for use with the 9U-6477 Barrel Cradle Stand and is equipped with a 300 gallon per hour pump. The tank comes with necessary fittings and a length of 1/2 ID hose.

Random scratches in the bore may be caused by honing grit being trapped between the cylinder wall and the honing stone. One method of improving the surface finish is to filter the oil before it is pumped to the honing head. Filtering the oil can be done by positioning a 7W-5317 Air Filter Element in the basin of 9U-6759 Oil Tank so that the discharged oil from the cylinder tube is strained through the element before the oil drains back into the tank. Additionally, position several 8M-7160 Magnets around the drain into the tank to attract stray metal shaving before they get to the pump pick-up.

Regardless of the pumping system, configure the system so that oil draining from the cylinder is collected in a sump. The sump should contain baffles to cause particulates to settle out of the oil before it is picked up by the pump. Arrange the pump pick-up so it is above the bottom of the sump.

Automatic Hone Tooling

Illustration 15	g03398867
(1) Feed Assembly Handwheel (2) Universal Joint (6) Disc Brake Mounting Bracket

1. Disconnect feed assembly handwheel (1) from universal joint (2). The connection uses right-hand threads. Lay the shaft extension, honing head, and handwheel assembly aside. Remove the carriage rail (4). Separate the drill from the carriage.

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Illustration 16	g03398889
(3) Carriage And Drill Assembly (4) Carriage Rail (11) Horizontal Brace

2. Remove the former carriage rail from the drill support stand and replace it with the new rail from the automatic hone group. The new rail is packaged with the limit switches, new carriage, and hydraulic drive motor already assembled. Weld the new rail to the drill support stand at both ends (5). See Illustration 17.

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Illustration 17	g03398899
(5) Drill Support Stand Ends

3. Mount the drill motor on the new carriage.

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Illustration 18	g03398904
(7) Torque Rod (8) Knob

4. Slide the bearing of disc brake mounting bracket (6) over the end of the feed assembly. Attach the bracket to the drill carriage using torque rod (7) and tighten knob (8) .

5. Thread the universal joint into the end of the feed assembly.

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Illustration 19	g03398918
(9) Control Panel

6. Position the control panel (9) approximately 635 mm (25.0 inch) form the end of the drill support stand and weld the control panel supports to the bottom of the drill support stand.

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Illustration 20	g03398947
(10) Hold-down Pads (12) Power Pack Brackets (13) Power Pack Tank

7. Weld hold-down pads (10) to the bottom of the drill support stand legs.

8. Use a saw or torch and remove horizontal brace (11) from between the two center legs of the drill support stand and weld power pack brackets (12) to the legs.

9. Position power pack (13) between the legs and bolt the power pack in place. Even though the length of the hoses may permit other locations for the power pack, it should be positioned close to the operator panel so the stroke speed can be conveniently adjusted.

10. Connect the two hoses between the power pack valve and the hydraulic motor. The hoses have no specific orientation for right or left.

11. Fill the power tank with clean, 10W hydraulic oil. It will not be necessary to purge air from the hose, however, the tank oil level should be checked after the first few minutes of use.

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Illustration 21	g03398991
Make sure that the Hydraulic Union indicated by the arrow and all other connections are tight.

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Illustration 22	g03398996

12. Weld two cross braces CALLOUT NOT FOUND under the barrel cradle stand. Weld leg risers CALLOUT NOT FOUND to the bottom of the barrel cradle stand feet.

13. Weld tabs CALLOUT NOT FOUND to the legs of the barrel cradle stand and the drill support stand and bolt the connecting braces in place.

14. Fabricate a spacer that will raise the honing oil tank to a height just below the barrel cradle stand splash shield and position the tank in place.

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Illustration 23	g03398999
(17) Honing Oil Supply Tank (18) Hydraulic Power Pack (19) Electric Drill (20) Multi-Wire Assembly

15. Plug the supply cords for the following electrical components into the back of the control panel:

    1. Honing oil supply tank (19)

    2. Hydraulic Power Pack (18)

    3. Electric Drill (17)

    4. Multi-wire assembly (20) from the two carriage stop/limit switches, the emergency stop witches, and the solenoid from the feed assembly disc brake.

16. Plug the control panel power supply cord into a minimum 110V, 30 amp outlet.

Automatic Hone Operating Procedure

Note: Refer to the Section ""Hone Tooling Assembly" " for setup instructions

1. Rotate the hand-wheel of the feed assembly clockwise (as viewed from the drill motor) to compress the stones to a size smaller than the bore to be honed.

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Illustration 24	g03399000
(21) Jog Buttons (24) Hone Out Light (27) Hone In Light (28) RED Emergency Stop Button (29) Hydraulic On Button (31) Honing Oil Switch

2. While lifting and supporting the honing head and stones, move the honing head into the end of the bore either manually or by using the "Jog" Buttons (21) labeled "Hone In " and "Hone Out".

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Illustration 25	g03399473
Position Stone (22) 25.4 mm (1.0 inch) From End Of Cylinder

3. Position the head and stones in the cylinder so the stones protrude less than 25.4 mm (1.0 inch) from the end of the cylinder.

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Illustration 26	g03399492
(23) Hone Out Carriage Stop (25) Pencil Or Chalk Mark

4. Slide "Hone Out" carriage stop (23) against the carriage so the limit switch is activated and the "Hone Out" light (24) is "ON". Tighten the stop in place. Make a mark (25) on the carriage rail in pencil or chalk so the stop setting can be repeated.

5. Carefully push the drill motor/carriage/honing head assembly into the cylinder until the stones lightly contact the bottom of the bore. Back the assembly away from the bottom of the bore 3 mm (0.19 inch) to 6 mm (0.24 inch) to allow for carriage "overrun".

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Illustration 27	g03399503
(26) Hone In Carriage Stop

6. Slide "Hone In" carriage stop (26) against the carriage until the limit switch is activated and "Hone In" light (27) is "ON". Tighten the stop in place

7. Turn the feed assembly handwheel counterclockwise to expand the stones until the stones lightly contact the bore.

8. Pull the drill motor/carriage/honing head assembly from the cylinder using the friction of the stones and guides against the cylinder wall to determine whether there are any tight spots (undersize bore areas) that might cause honing damage during initial start-up.

9. Turn the handwheel clockwise a 1/4 to 1/2 turn to loosen the stones.

10. Pull the "RED" emergency stop button (28) out to supply electrical power to the control panel. The button may be labeled "EMERGENCY STOP". "EMERG STOP", or "E STOP". Make sure the remote stop on the end of the bench is also pulled out.

11. Push the "Hydraulic On" button (29) to start the hydraulic power pack.

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Illustration 28	g03399540
(30) Pump Control Valve

12. Make sure the initial stroke speed is correct by turning the knob on the pump control valve (30) clockwise two to three turns.

13. Turn "Honing Oil" switch (31) to "ON" to start the honing oil pump.

To Stop Honing

1. Push either of the "RED" emergency stop buttons. When either of the "RED" emergency stop buttons are pushed, all electrical power is cut off at the panel.

To Start Honing

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Illustration 29	g03399553
(32) Auto On, Drill On, Hydraulic On Buttons (33) Stones Switch (34) Anmeter (35) Automatic Timer (36) Timer On/Off Switch

1. As soon as oil flows from the cylinder, start honing by simultaneously pushing the "auto On, Drill On, and Hydraulic On" buttons (32). The honing head will start rotating and stroking.

2. Expand the honing stones one of two ways:

   1. Apply manual pressure to the rotating handwheel, or

   2. Turn the "Stones" switch (33) to "ON" to start automatic expansion of the honing stones.

3. With "Auto Stone" activated, the ammeter (34) senses decreasing drill motor electrical load between a preset range as the stones wear and become "loose" in the bore. The decreased load causes the ammeter to send a signal to the solenoid to engage the disc brake on the handwheel. The stopping pressure causes the handwheel to expand and tighten the stones and increase the load. Tests have shown the drill motor performs well when the ammeter draw is kept between seven and nine amps.

4. Adjust the stroking speed so that a crosshatch is formed. Rotate the knob on the pump control valve counterclockwise to increase the speed and clockwise to decrease the stroking speed,

5. If a deep scratch is to be removed, or if the bore is to be made oversize, engage automatic timer (35) for unattended operation of the hone. Timer operation is started by rotating "Timer On/Off switch" (36) to the "ON" position. The length of timer operation is set by pushing the buttons on the timer until the desired time in seconds, minutes, or hours is displayed.

6. Stop the hone at regular intervals to measure the new bore size and determine whether all bore damage has been removed.

7. The numerous hone functions can be stopped individually, however, the best way to stop the hone is by pushing the "E Stop" button as described in Step 1

Note: Stop the head and stones at the open end of the cylinder to avoid scratching the bore as the honing head is withdrawn from the bore.

8. Rotate the handwheel clockwise until the stones are considerably compressed. The "Hone Out" carriage stop will have to be loosened and slid back along the carriage rail in order to remove the honing head.

9. If all scratches have been removed, or if the bore is within 0.0254 to 0.0508 mm (0.001 to 0.002 in) of the final bore size, no further rough honing is needed.

10. Change to finishing stones and repeat the honing procedure. If the timer operation is used, the timer switch must be turned "OFF" and then "ON" in order to reset the switch.

11. Hone the bore with finishing stones until the desired bore size is reached and the surface finish is smoother than 0.8 micrometer (32 microinch).

Honing Operations

Honing Head RPM

For each bore size, the hone must be operated within a speed (rpm) range for the stones to cut correctly and not wear too rapidly. In general, the larger the bore, the slower the rpm.

Determine the proper head rpm by dividing the bore size in millimeters into 30,000 or the bore size in inch into 1200.

Example:

30,000 / 101.6 mm (bore) = 295 rpm

1200/ 4.00 in (bore) = 300 rpm.

If either a 9U-6400 or 9U-5888 Drill Motor is used, select a motor rpm from Illustration 30. If the motor rpm does not match the rpm calculated by the formula, select the next higher motor rpm.

Illustration 30	g03399682

Honing Head Feed/Crosshatch

The hone must be stroked along the length of the bore in order to refinish the bore uniformly. Stroking the hone at a rate of 76 to 102 mm (3 to 4 inch) per second will cause the stones to wear evenly. A stroke speed that is too slow will cause the stones to wear more in one area than another and cause inconsistent bore sizes. Localized honing should be avoided unless the intent is to enlarge a tight fit (undersize) area.

Illustration 31	g03399704
Cross-Hatch Patterns

A correct stroke speed will produce a crosshatch pattern. The diagonal scratches of the pattern will be formed at an included angle of approximately 105 to 125 degrees. The crosshatch pattern is determined both rotational speed (rpm) and traverse speed (feed rate). In general, a larger bore requires both fewer rpm and a lower feed rate while a smaller bore can handle a higher feed rate and higher rpm.

Stroke Length

When stroking, use care at both ends of the cylinder assembly. The stones should extend past the open end of the cylinder assembly, but not more than 25.4 mm (1.0 inch) or 1/3 the stone length. Hone the complete length of the bore, but do not allow the stones to contact the closed end of the cylinder assembly or damage to the stones may result.

Surface Finish

A measurement of surface finish given in micrometers or microinches is an indication of the relative "roughness" of the finish. A "low" micometer 0 to .08 or microinch (0 to 32) number called out in a print specifies a relatively smooth finish. "Higher" numbers indicate rougher finishes. The most accurate method of determining the roughness of a surface is by using a profilometer or surface finish tester. Such instruments calculate the roughness average (Ra) of a surface over a given length.

A profilometer kit Model EMD-1500-311 is available from:

A surface finish of 0.80 micrometers (32 microinch) or smoother is necessary for proper seal and cylinder performance. Surfaces rougher that 0.80 micrometer (32 microinches) will cause accelerated seal wear, leakage, and erratic cylinder operation.

After rough honing using Aluminum Oxide stones of 150 grit, install Silicone Carbide finish stones of 400 grit and hone for 10 to 20 strokes (1 stroke = in and out).

The number of strokes will vary with the cylinder bore size and length. Determine the smoothness of the bore. If the finish is judged to be 0.8 micrometer (32 microinches) or smoother, honing is complete. Do not continue to hone if the surface finish is 0.8 micrometer (32 microinches) or smoother because any additional honing consumes unnecessary time and honing consumables. Proceed to Section ""Cylinder Cleaning" ".

Honing Oil

9U-6484 Honing Oil is offered by CSTG and is formulated for honing the type of steel used in hydraulic cylinder tubes. 9U-6484 Honing Oil ensures fast cutting and will minimize galling in addition to providing lubrication to the stones and guides.

Note: 9U-6484 Honing Oil is not a cleaning fluid. Honed cylinder tubes must be cleaned or flush prior to re-assembly. Refer to Section ""Cylinder Cleaning" ".

Do not use 5P-8615 Honing Oil when honing steel hydraulic components. 5P-8615 Honing Oil is formulated for honing cast iron parts.

Do not use lubricating oil, cutting oil, or water soluble oil. Do not dilute the oil. Consistent results cannot be expected unless full-strength, recommended oil is used.

Cylinder Cleaning

The honing process creates a large quantity of abrasive particles that must be cleaned from the cylinder before it is resealed.

The abrasives are either stone particles, the binder used to hold the stone particles together, guide material, or metal shavings from the cylinder bore. Abrasives of any type cause accelerated wear to hydraulic cylinder seals as well as other hydraulic system components.

After honing, allow the honing oil to drain from the cylinder. Remove the cylinder assembly to a dedicated cylinder washer such as 120-9143 Cylinder Washer available from Caterpillar Service Technology Group. The cylinder wash uses rotating nylon bristle brushes to scrub the walls of the cylinder while "blasting" grit loose using a high-pressure spray of a filtered Hydrosolv solution. Refer to Brochure, NEHP5605 for ordering information.

Hydrosolv 4165, a soap product available from Caterpillar Service Technology Group, is well suited to parts cleaning applications. Hydrosolv4165 contains agents that provide rust protection for up to 6 weeks and is available in 5 gallon 1U-5490 and 185-4619 (EAME).

Concentrate the wash on confined areas such as ports, internal threads, and interior weld parting lines. Rinse the cylinder assembly with water. Wipe a clean white towel or paper towel across the bore. The bore is "clean" if the towel is not discolored after being wiped through the bore. Repeat washing and rinsing the cylinder assembly until the towel is not discolored.

Following a final rinse, dry the cylinder assembly using pressurized air.

Note: The possibility of flash rust during drying is minimized if the cylinder is warmed during the cleaning process, causing any water to evaporate.

If the cylinder will not be assembled for some time, coat all exposed metal surfaces with clean hydraulic oil.

Honing Troubleshooting Guide

Note: Many honing problems, such as poor cutting action, poor stone life, and rough finish, are caused by the wrong honing oil, insufficient honing oil, dirty oil, or contaminated honing oil. Use only clean, full strength, 9U-6484 Honing Oil . Make certain that the oil is neither diluted nor "cut" with other oils. Keep solvents and cleaning fluids away from the hone.

Honing Stone Part Numbers for Steel Cylinder Tubes

Illustration 32	g03403414

Drill Support Stand Assembly Drawing

Illustration 33	g03402826

Barrel Cradle Stand Assembly Drawing

Illustration 34	g03400301

Parts Lists and Drawings

1U-9001 and 1U-9002 Automatic Hone Stands

Illustration 35	g03418280

Illustration 36	g03400400

Additional Parts for 1U-9001 and 1U-9002 Automatic Hone Stands

Illustration 37	g03400581

Illustration 38	g03400598

Illustration 39	g03400836

Illustration 40	g03400842

4C-2997 Adjuster Assembly

Illustration 41	g03400892
4C-2997 Adjuster Assembly

126-8413 Traverse Assembly

Illustration 42	g03401022
The 126-8413 Traverse Assembly

Illustration 43	g03401049
The 126-8413 Traverse Assembly (continued).

Additional Contact Information

For additional product support questions concerning this tool, contact the Dealer Service Tools Hotline at:

USA: 800-542-8665, Option 1

International: 1-309-578-7372

E-mail: dealerservicetool_hotline@cat.com

Note: Continuing improvement and advancement of product design can mean some photographs or illustrations in this publication will show details that are different from your service tool.