SEBU 7158

OPERATION ANDPREVENTIVEMAINTENANCE MANUALWINCH MODELPA58VS FOR D8R SERIES II

LIT-2017 REV. 13/2001Printed in U.S.A.

Copyright 2001 PACCAR Winch DivisionAll rights reserved.

PACRWINCH DIVISIONP.O. BOX 547 BROKEN ARROW, OK U.S.A. 74013PHONE (918) 251-8511 FAX (918) 259-1575www.paccarwinch.com

FOREWORDPlease read and understand this entire manual BEFORE operating or servicing your Paccar winch. Retain thismanual for future reference.

Some illustrations in this manual may show details or attachments which may be different from your winch. Also,some components may have been removed for illustrative purposes.

Whenever a question arises regarding your Paccar winch, or this manual, please contact your nearest Caterpillardealer or the Paccar SERVICE DEPARTMENT at 1-981-251-8511, Monday-Friday, 0800 hrs-1630 hrs CST or byFAX at 1-918-259-1575. Provide the complete winch MODEL NUMBER and SERIAL NUMBER when makinginquiries.

Parts and ServicePaccar provides parts and service through a network of authorized dealers. Parts and service are not availabledirectly from Paccar. For the name of your nearest dealer, consult your local phone directory or call Paccar at thephone number shown above.

TABLE OF CONTENTS

General Safety Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Model Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Winch Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Preventive Maintenance and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Metric Conversion Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

WARNING – This emblem is used to warn againsthazards and unsafe practice which COULD result insevere personal injury or death if proper proceduresare not followed.

CAUTIONWARNING! !CAUTION – This emblem is used to warn againstpotential or unsafe practices which COULD result inpersonal injury and product or property damage ifproper procedures are not followed.

Safety and informational callouts used in this manual include:

1

CAUTION

2

GENERAL SAFETY RECOMMENDATIONSSafety for operators and ground personnel is of primeconcern. Always take the necessary precautions toensure safety to others as well as yourself. To ensuresafety, the tractor and winch must be operated withcare and concern by the operator for the equipmentand a thorough knowledge of the machine’s perform-ance capabilities. The following recommendations areoffered as a general safety guide. Local rules and reg-ulations will also apply.

1. Read all warning tag information and becomefamiliar with all controls BEFORE operating winch.

2. Never attempt to clean, oil or perform any mainte-nance on a machine with the engine running,unless instructed to do so in this manual.

3. Before starting tractor, be certain all controls movefreely and are placed in the “Brake-On” (neutral)position.

4. Never operate winch controls unless you are prop-erly seated at the operators station on the tractorand you are sure personnel are clear of work area.

5. Match winch line speeds to job conditions.6. Assure that personnel who are responsible for

hand signals are clearly visible and that the sig-nals to be used are thoroughly understood byeveryone.

7. Never attempt to handle winch cable when thehook end is not free. Keep all parts of body andclothing clear of cable rollers, cable entry area offairleads and winch drum.

8. Leather gloves should be used when handlingwinch cable.

9. Ground personnel should stay in view of tractoroperator and clear of winch drum. Do not allowground personnel near winch line under tension. Asafe distance of at least 1 ½ times the length of thecable in use should be maintained. Never allowanyone to stand under a suspended load.

10. When winding winch cable on the winch drum,never attempt to maintain tension by allowingwinch cable to slip through hands. Always use“hand-over-hand” technique, being careful to keephands and clothing away from winch drum andfairlead rollers.

11. Use correct size ferrule for cable and pocket inwinch drum. Never use knots to secure or attachcable.

12. Inspect winch cable, rigging, winch and tractor atthe beginning of each work shift. Defects shouldbe corrected immediately.

13. Position tractor for straightest line of pull. Usefairlead if side pulls are frequently encountered.

14. The cable anchor or ferrule pocket in the cabledrum is designed to provide a self-release in theevent a backsliding load must be released fromthe tractor in an emergency situation. The cableanchor or ferrule, alone will NOT support ratedline pull. Therefore, a minimum of five (5) com-plete wraps of cable must be maintained on winchdrum. We suggest painting the last five wraps ofcable bright red to serve as a visual warning.

15. Be sure of tractor ground stability before winchingin load.

16. Store unused chokers, slings and rigging in a neatand orderly fashion to prevent damage to equip-ment or injury to personnel.

17. PACCAR winch model numbers indicate the unit’smaximum rated bare drum line pull:Model PA58VS = 109,700 (488 kN)Do not operate winch under loads that exceed themaximum rated bare drum line pull. If excessiveloads are encountered, use a multi-part line andsheave blocks. Any attempt to exceed the capa-bilities of one winch (such as coupling 2 or moretractors together) is extremely hazardous.

18. The factory approved adaptations for Paccarwinches are designed and intended for use onspecific models of crawler tractors. Changingwinches between tractors is not possible in somecases because of differences in tractor models.Paccar cannot approve some changes becauseof safety limitations. Call a Paccar dealer or theFactory prior to attempting winch modificationsor before mounting on a different tractor. Useonly GENUINE PACCAR parts. Do not use partsfrom other winch manufacturers on your PaccarWinch. Do not use Paccar parts on winches fromother manufacturers.

19. The PA58VS is powered by the tractor hydraulicsystem. Discharge all retained hydraulic systempressure before removing any hydraulic lines orfittings. Personal injury may result from suddenrelease of oil pressure. To discharge the winchcontrol system pressure, stop the engine andcycle the winch control lever(s) into all positionsfive times. Refer to the tractor manufactureroperators or service manual for additional infor-mation.

20. On machines having hydraulically, mechanicallyand/or cable controlled equipment, be certain theequipment is either lowered to the ground or

FAILURE TO OBEY THE FOLLOWING SAFETYRECOMMENDATIONS MAY RESULT IN PROP-ERTY DAMAGE, INJURY OR DEATH.

CAUTIONWARNING! !

blocked securely before servicing, adjustingand/or repairing the winch. Always apply tractorparking brakes and lower equipment before dis-mounting the tractor.

21. The winches described herein are neitherdesigned nor intended for use or application toequipment used in the lifting or moving of per-sons.

22. Install guarding to prevent personnel from gettingany part of body or clothing caught at a pointwhere the cable is wrapped onto the drum ordrawn through fairlead guide rollers.

23. Avoid sudden “shock” loads or attempting to

“jerk” load free. This type of operation may causeheavy loads in excess of rated capacity, whichmay result in failure of cable and winch.

24.Keep equipment in good operating condition.Perform scheduled servicing and adjustmentslisted in the “Preventive Maintenance” section ofthis manual. Use recommended lubricants.

25. An equipment warm-up procedure is recom-mended for all start-ups and essential at ambienttemperatures below +40°F (5°C). Refer to“Warm-up Procedure” listed in the “PreventiveMaintenance” section of this manual.

MODEL DESCRIPTIONThe PACCAR PA58VS Series hydraulically drivenwinch is a triple reduction planetary winch drive sys-tem enclosed in a large welded housing attached tothe rear face of a crawler tractor. The winch is drivenby a hydraulic motor, which depends upon the tractorhydraulic system for power. The delivery of the oil sup-ply to the winch motor varies with specific tractordesign.The winch has equal speed gearing, power-in andpower-out. The gear train and winch load are heldsecure by a spring applied, hydraulically releasedmulti-disc static brake when the controls are in theneutral “brake-on” position.When the winch is operated in the Reel-In direction,the motor drives the gear train through sprag-typebrake clutches. The inner race of the brake clutchserves as a coupling between the motor shaft and thewinch gear train. The outer race of the brake clutch issplined to the friction discs of the spring applied static(parking) brake. Two sprag clutches are locatedbetween the inner and outer races. Immediately uponstopping, the sprag cams roll up to lock the inner raceto the outer race and firmly hold the gear train. Thiseliminates “load fall-back” to provide exceptionallyprecise load control.When starting a Reel-Out maneuver, the hydraulic oilenters the hydraulic motor but cannot escape as thebrake valve (counterbalance valve) is closed. Thepressure increases in the motor and brake releasepilot hoses causing the static load holding brake to bereleased. As the pressure continues to increase, thecounterbalance valve starts to meter oil flow out of themotor allowing the gear train and winch drum torotate. The counterbalance valve continuously modu-lates the flow to provide a smooth and controlled pay-out of the winch cable regardless of load or speed.A large, spring applied hydraulically released drumclutch secures the reaction member (ring gear) of theintermediate planetary set to the winch housing.When the drum clutch is released, the intermediate

ring gear can turn freely allowing the tractor to driveaway from a load. The resistance of the gear train willmaintain a tight wrap of cable on the drum.A three-roller fairlead is standard equipment anddesigned into the housing weldment. A fourth rollermay be added as required.The hydraulic motor size (displacement) and winchgear ratio are matched to the hydraulic system of thetractor to maximize available power.The winch model number is an important reference asto what components are used when the winch wasmanufactured. The winch model number and serialnumber are stamped into the top surface of the winchcase weldment above the upper, right hand winchmounting pad.The winch model number contains the following con-figuration data:

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PA58VS - 245V065 - 0 - 3 WINCH ASSEMBLY

FAIRLEADOPTION:

3 = 3 Roller4 = 4 Roller

CONTROL OPTION:0 = Auto Speed/Lock-in-Low Speed2 = 2-Speed

MOTOR SIZE:cu in. Disp/Rev065 = 6.5 cu in.

MOTOR TYPEV = Variable Disp.

OVERALL REDUCTION RATIO:245:1

BASE WINCH MODEL/TRACTOR

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HYDRAULIC SYSTEM DESCRIPTIONThe D8R differential steer tractor is designed with aload sense, pressure compensating hydraulic system.This system is equipped with a variable displacementpiston pump which supplies oil to the implement valveonly when a work function (cylinder or motor)demands flow. Normally the pump(s) remain atapproximately 400 psi (2,760 kPa) in the low pressurestandby condition. Shifting the winch control valve willcause the pump displacement control system toupstroke to match the demand of load. If the pressurestarts to exceed the pump compensator setting, (cylin-der reaches full stroke or the motor pressure is at themaximum) the pump will destroke to decrease the flowand just maintain the pressure at the compensator set-ting. The significance of this system is that there is noexcess flow metered across a relief or partially shiftedcontrol valve spool to generate heat. Returning thecontrol valve to neutral destrokes the pump to a lowflow, typically 0.2-0.5 gpm (.75-1.9 lpm) and returnsthe pump to a low pressure standby value of approxi-mately 400 psi (2,760 kPa). Load sense hydraulic sys-tems give extremely good control of the load and min-imize hydraulic loss inefficiencies in the system.

The PA58VS joystick utilizes the control patternshown in Figure 1. Moving the control handle com-presses the pilot valve plunger in the direction ofmotion. This causes a variable pressure signal at thejoystick port immediately below the plunger. Pressurefor reel-in and reel-out functions is ported to the winchcontrol valve section; this pilot pressure results inwork pressure at the winch motor. The drum clutchfunction of the joystick valve is connected directly tothe winch drum clutch piston. Supply pressure for thejoystick is the multi-function logic block. This blockcontains a pressure reducing valve which convertstractor implement system pressure to 600 psi for pilotpressure. The block also contains an emergency reliefvalve, a flow control device to prevent system over-heating in the event of a pressure reducing valve fail-ure, and a solenoid actuated valve cartridge whichprovides a pilot signal to lock the winch motor in max-imum displacement; the latter is a “low lock” functionactuated with a button on the joystick. The valve blockalso includes an operator controlled, solenoid actuat-ed valve cartridge that will disable the pilot control cir-cuit to prevent accidental winch actuation.

WINCH OPERATIONCONTROL OPERATIONThe following illustrations show joystick positions andexplain corresponding winch action. Note that the joy-stick provides infinitely variable winch speed control.Slight movement of the joystick in the reel-in or reel-out direction results in a very slow, controlled drumspeeds. As the joystick is moved further from the cen-ter neutral position, the drum speed will increase pro-portionally. When the handle is released from reel-inor reel-out, it will spring return to the neutral brake-onposition. Because there are no directional frictionclutches, as would be found in conventional mechan-ically driven winches, the joystick may be moved invery small increments (feathered) to achieve preciseload control without winch wear or damage. The drumclutch function is somewhat less variable than reel-inor reel-out. The joystick will latch into the drum clutchposition.

Brake-On (neutral). The joystick isspring centered to brake-on. The multi-disc, static parking brake is applied byspring force. Loads may be skidded inthis position.

Reel-In. The winch drum will pull incable. Cable speed is proportionalto joystick position. When released,the handle will return to neutral andthe winch drum will stop and holdthe load.

Drum ClutchRelease

Reel-In Reel-Out

Figure 1

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Reel-Out. The winch drum will pay-out cable. Cable speed is propor-tional to joystick position. Whenreleased, the handle will return toneutral and the winch drum will stopand hold the load.

Drum clutch release. This positionwill release the drum clutch and per-mit the operator to drive away from aload. The resistance of the gear trainwill keep a tight wrap of cable on the

drum to prevent overrun. It should be noted that theresistance of the gear train will not permit cable to bepulled off the drum by hand. The joystick will stay inthe detented, clutch released position to permit theoperator to use both hands for tractor operation.Lightly pull the lever back toward the operator torelease the detent and apply the drum clutch.

DO NOT use drum clutch release for controlledreel-out of suspended loads. Sudden release ofload may result in property damage, injury or death.Only use reel-out to lower loads.

CAUTIONWARNING! !

Low-Lock Indicator Light

Low-Lock/Auto-Speed SwitchLow-Lock/Auto-Speed. Press andrelease the yellow button near thetop of the lever to apply low-lock(indicator light will be on) which willhold the variable displacementmotor in the maximum displace-

ment position for maximum line pull and minimum linespeed to enhance precise load control. Press the but-ton again to return to full auto-speed operation (indi-cator light will be off) where the motor displacementwill self adjust between the maximum and factory-setminimum displacement to achieve the best match ofline speed and line pull for the application.

The PA58VS hydraulic motor and gear ratio arespecifically configured for D8R tractors with differ-ential steer. The winch may not be usable on othertractors. Contact Paccar winch for details on retro-fitting the winch on different tractors.

CAUTION

The rotary switch must be turned tothe unlocked position to operate thewinch. When the rotary switch isturned to the locked position, theimplement pilot control system is dis-abled to prevent accidental actuationof the winch or any hydraulically oper-

ated implement. The rotary switch should be left inthe locked position when the winch is not being used.

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A regular program of preventive maintenance for yourPACCAR winch will minimize the need for emergencyservicing and promote long product life and trouble-free service.

The service intervals suggested in this manual willoptimize component service life. The intervals may begradually increased or decreased with experience of aparticular lubricant and evaluation of your application.

1. Gear Case Oil LevelThe winch assembly should be visually inspected forleaks at the beginning of each workday. If oil leaks arefound, the gear case oil level must be checked. If noleaks are detected, the oil level may be checked onceevery 250 hours or monthly. The oil level plug is locat-ed at the horizontal centerline on the drum clutchhousing. Position the tractor on a flat, level surfaceand remove the plug. The oil should be at the bottomof the level plug hole.

Add oil as required through the oil filter plug locatednear the top of the drum clutch housing. Add oil slow-ly, as the oil must pass through the gear train and fillthe cable drum cavity.

Refer to the recommended oil chart for the proper oilfor your application.

2. Tractor Hydraulic Reservoir LevelThe tractor hydraulic reservoir oil level should bechecked daily or in accordance with the tractor manu-facturer’s recommendations. Use the type of hydraulicoil recommended by the tractor manufacturer.

Change the tractor hydraulic oil and filter every 1000hours or in accordance with the tractor manufacturer’srecommendation.

3. Gear Case Oil ChangeChange the winch gear case oil after the first 100-250hours of operation, then every 1000 hours or sixmonths, whichever occurs first.

Remove the drain plug located at the bottom of thedrum clutch housing. Drain oil into a suitable contain-er and recycle or dispose of used oil in an environ-mentally responsible manner. Install the plug securelyafter the oil has been drained.

Refill winch to proper level with recommended oil.Allow 15 minutes for the oil to flow through the geartrain and fill the cable drum cavity before checking theoil level.

Oil Capacity: Approximately 16 qt. (15L)

4. Vent PlugThe vent plug is installed in the oil filler plug locatednear the top of the drum clutch housing. Wheneverthe oil is changed, remove the vent plug, clean insafety solvent and reinstall.

Note: Do not replace the vent plug with a solid plug.The normal expansion of the oil during operationwould cause a build-up of pressure in the gear case,which may lead to seal leakage.

5. Winch Cable (Wire Rope)Inspect entire length of wire rope and hook in accor-dance with the rigging manufacturer recommenda-tions.

6. Mounting FastenersCheck/tighten all winch mounting fasteners to recom-mended torque after the first 100-250 hours of opera-tion, then every 1000 operating hours or six (6)months, whichever occurs first.

7. Warm-up ProcedureThe tractor should be run at its lowest RPM with thewinch control in the neutral, brake-on position allowingsufficient time to warm the hydraulic system or inaccordance with the tractor manufacturer’s recom-mendations.

The winch should then be operated under a no-loadcondition, in reel-in and reel-out direction severaltimes to prime the lines with warm hydraulic oil andcirculate gear lubricant through the brake and geartrain. This action will minimize the temporary increasein “brake-off” drag caused by cold oil.

PREVENTIVE MAINTENANCE

Hot oil may cause injury. Make certain oil hascooled to a safe temperature before servicing.

CAUTIONWARNING! !

Do not operate winch while oil is drained. Seriousdamage to internal components may result.

CAUTION

A warm-up procedure is recommended at eachstart-up and is mandatory at ambient temperaturesbelow 40oF (4oC). Failure to warm up the trac-tor/winch oil may result in temporary brake slippageand loss of load control due to high back pressuresattempting to release the static brake. This condi-tion may result in property damage, injury or death.

CAUTIONWARNING! !

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8. Fairlead RollersGrease the fairlead rollers at the beginning of eachwork day. The vertical rollers have a grease fitting atthe top and bottom. The horizontal rollers have onlyone grease fitting. Apply grease until a small amountpushes out around the shaft.

Use a high quality type 12-hydroxy stearate lithiumbase product which contains an EP additive, such asMoly, and meets or exceeds an NLGI Grade 2 speci-fication.

9. InspectionEvery 10,000 hours or four years, whichever occursfirst, the winch should be disassembled for a thoroughinspection of all wear items. Refer to the ServiceManual for additional information.

oF -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 oF

oC -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30 35 40 oC

Prevailing Ambient Temperature

! WARNING !Cold start-up in this ambient temperature range requires extendedequipment warm-up to prevent erratic clutch and brake operationwhich may result in property damage, injury or death.

A - HTF Type C3/C4 SAE 30, CAT TO4 SAE30B - Case TCH MS 1210, CAT TO4 SAE 10W30, JD HY-GARD J20CC - HTF Type C4/C4 SAE 10, CAT TO4 SAE 10W, KOM HDTF 10D - CAT TO4 SAE 5W20 spc., JD HY-GARD LOW VISCOSITY J20D

Basic Oil Requirements

15,000 SUS maximum allowed viscosity at cold start-up; requires extended equipment warm-up.3,000 SUS maximum allowed viscosity at cold start-up; requires normal equipment warm-up.60 SUS minimum allowed viscosity at maximum winch operating temperature assuming ambientplus 80 oF (27 oC).

Oil must possess high temperature oxidation stability, rust and corrosion protection, good dispersantand detergent characteristics, anti-wear additives and remain compatible with nitrile base seals.

A

B

C

D

Recommended OilWe have published the following specification to help you determine which lubricant is best suited to your appli-cation.

Your lubricant supplier should assure you that his product meets this specification. If there is still any doubt as tothe suitability of a lubricant, contact the Paccar Winch Service Department, providing a copy of the product spec-ifications.

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GENERAL SPECIFICATIONSUnit Weight w/o Oil, Cable or Tractor Adapters . . . . . . . . . . . . . . . . . . . . . . .Approximately 4,025 lbs (1,825 kg)

Gear Ratios Available Cable Drum DimensionsOverall Reduction . . . . . . . . . . . .245:1 Barrel Diameter . . . . .12.5 in. (318 mm)

Flange Diameter . . . .24.0 in. (610 mm)Barrel Length . . . . . .13.25 in. (337 mm)

Cable Storage Capacity

ft m ft m ft m1 38 11.6 42 12.8 46 14.02 83 25.3 90 27.4 99 30.23 135 41.2 145 44.2 159 48.54 193 58.8 207 63.1 226 68.95 ----- ----- 276 84.1 300 91.4

1 in. (25 mm)FERRULE PART NO. 29427LAYER

1-1/4 in. (32 mm)FERRULE PART NO. 29429

1-1/8 in. (29 mm)FERRULE PART NO. 29428

Bolt Dia. Thds Per Inches Inch Dry Lubed

2028182416241420132012181118

Torque LB-FT

1/4 9 6

5/16 18 13

3/8 31 23

7/16 50 27

5/8 150 115

1/2 75 55

9/16 110 80

Bolt Dia. Thds Per Inches Inch Dry Lubed

1016914814712712612612

3/4 265 200

7/8 420 325

1 640 485

1 1/8 790 590

1 1/2 1940 1455

Torque LB-FT

1 1/4 1110 835

1 3/8 1460 1095

RECOMMENDED FASTENER TORQUE

The general purpose torque shown in the chart applies to SAE Grade 5 bolts, studs and standard steel full, thickand high nuts.

Higher or lower torques for special applications will be specified, such as the use of spanner nuts, nuts on shaftends, jam nuts and where distortion of parts or gaskets is critical.

Lubricated torque values based on use of SAE 30wt engine oil to threads and face of bolt or nut.

Avoid using thread lubricants as the applied torque may vary by 10 to 40%, depending upon the product used.

To convert lb•ft to kg•m, multiply value by 0.1383.

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inches (in.) X 25.4 = millimeters (mm) millimeters (mm) X 0.3937 = inches (in.)feet (ft.) X 0.3048 = meters (m) meters (m) X 3.281 = feet (ft.)miles (mi.) X 1.6093 = kilometers (km) kilometers (km) X 0.6214 = miles (mi.)

inches2 (sq.in.) X 645.15 = millimeters2 (mm2) millimeters2 (mm2) X 0.000155 = inches2 (sq.in.)feet2 (sq.ft.) X 0.0929 = meters2 (m2) meters2 (m2) X 10.764 = feet2 (sq.ft.)

inches3 (cu.in.) X 0.01639 = liters (l) liters (l) X 61.024 = inches3 (cu.in.)quarts (qts.) X 0.94635 = liters (l) liters (l) X 1.0567 = quarts (qts.)gallons (gal.) X 3.7854 = liters (l) liters (l) X 0.2642 = gallon (gal.)inches3 (cu.in.) X 16.39 = centimeters3 (cc) centimeters3 (cc) X 0.06102 = inches3 (cu.in.)feet3 (cu.ft.) X 28.317 = liters (l) liters (l) X 0.03531 = feet3 (cu.ft.)feet3 (cu.ft.) X 0.02832 = meters3 (m3) meters3 (m3) X 35.315 = feet3 (cu.ft.)fluid ounce (fl.oz.) X 29.57 = millileters (ml) milliliters (ml) X 0.03381 = fluid ounce (fl.oz.)

ounces (oz.) X 28.35 = grams (g) grams (g) X 0.03527 = ounces (oz.)pounds (lbs.) X 0.4536 = kilograms (kg) kilograms (kg) X 2.2046 = pounds (lbs.)tons (2000 lbs.) X 907.18 = kilograms (kg) kilograms (kg) X 0.001102 = tons (2000 lbs.)tons (2000 lbs.) X 0.90718 = metric tons (t) metric tons (t) X 1.1023 = tons (2000 lbs.)tons (long) (2240 lbs.) X 1013.05 = kilograms (kg) kilograms (kg) X 0.000984 = tons (long) (2240 lbs.)

inches Hg (60oF) X 3600 = kilopascals (kPa) kilopascals (kPa) X 0.2961 = inches Hg (60oF)pounds/sq.in. (PSI) X 6.895 = kilopascals (kPa) kilopascals (kPa) X 0.145 = pounds/sq.in. (PSI)pounds/sq.in. (PSI) X 0.0703 = kilograms/sq.cm. (kg/cm2) kilograms/sq.cm. (kg/cm2) X 14.22 = pounds/sq.in. (PSI)pounds/sq.in. (PSI) X 0.069 = bars bars X 14.5 = pounds/sq.in. (PSI)inches H2O (60oF) X 0.2488 = kilopascals (kPa) kilopascals (kPa) X 4.0193 = inches H2O (60oF)bars X 100 = kilopascals (kPa) kilopascals (kPa) X 0.01 = bars

horsepower (hp) X 0.746 = kilowatts (kW) kilowatts (kW) X 1.34 = horsepower (hp)ft.-lbs./min. X 0.0226 = watts (W) watts (W) X 44.25 = ft.-lbs./min.

pound-inches (in.-lbs.) X 0.11298 = newton-meters (N-m) newton-meters (N-m) X 8.851 = pound-inches (in.lbs.)pound-feet (ft.-lbs.) X 1.3558 = newton-meters (N-m) newton-meters (N-m) X 0.7376 = pound-feet (ft.-lbs.)pound-feet (ft.-lbs.) X .1383 = kilograms/meter (kg-m) kilogram/meter (kg-m) X 7.233 = pound-feet (ft.-lbs.)

miles/hour (m/h) X 0.11298 = kilometers/hour (km/hr) kilometers/hour (km/hr) X 0.6214 = miles/hour (m/h)feet/second (ft./sec.) X 0.3048 = meter/second (m/s) meters/second (m/s) X 3.281 = feet/second (ft./sec.)feet/minute (ft./min.) X 0.3048 = meter/minute (m/min) meters/minute (m/min) X 3.281 = feet/minute (ft./min.)

mega (M) = 1,000,000 or 106 deci (d) = 0.1 or 10-1

kilo (k) = 1,000 or 103 centi (c) = 0.01 or 10-2

hecto (h) = 100 or 102 milli (m) = 0.001 or 10-3

deka (da) = 10 or 101 micro (m) = 0.000.001 or 10-6

oCelsius = 0.556 (oF - 32) oFahrenheit = (1.8oC) + 32

COMMON METRIC PREFIXES

TEMPERATURE

POWER

TORQUE

VELOCITY

VOLUME

MASS

PRESSURE

METRIC CONVERSION TABLE

LINEAR

AREA

English to Metric Metric to English