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NACD SP318AM Series Service Manual

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NACD Power Take-Off Service Manual
1022764AM
SP318AM and SP318SBAM Series
Includes Installation, Operation, Maintenance and Overhaul Instructions

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Summary of Contents for NACD SP318AM Series

  • Page 1 NACD Power Take-Off Service Manual 1022764AM SP318AM and SP318SBAM Series Includes Installation, Operation, Maintenance and Overhaul Instructions...
  • Page 2 Phone: (800) 383-9204 (815) 282-7960 North American Clutch & Driveline Fax (815) 282-9160 Rockford, Illinois www.naclutch.com...
  • Page 3 NACD. WARRANTY: NACD’s limited Warranty is described in detail in this publication. It is the responsibility of the original purchaser or manufacturer, successive buyers, users, third parties or employees to make themselves aware of this warranty and all conditions it contains.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION General Information Replacement Parts Preventive Maintenance/Troubleshooting Safety Sources of Service Information Warranty DESCRIPTION AND SPECIFICATIONS General Information Identifying the Power Take-Off Model Identifying the SAE Housing Size Specifications PTO Support Plate Specifications Wear Limits Torque Values for Fasteners INSTALLATION Installation Tips Prior to Installation (Ref;SAE J1033 and J617)
  • Page 5 TABLE OF CONTENTS Friction Plate Replacement Field Adjustment - Tapered Roller Bearing End Play DISASSEMBLY Power Take-Off Removal From The Engine Clutch Removal Clutch Disassembly Bronze Collar Disassembly Ball Bearing Collar Disassembly Remove the Operating Shaft and Throwout Yoke Clutch Shaft and Housing Disassembly - Configuration C Clutch Shaft and Housing Disassembly - Configuration D CLEANING AND INSPECTION Cleaning and Inspection...

  • Page 6: Introduction

    If shipping instructions are not specified, the equipment will be shipped the best way, considering time and expense. NACD will not be responsible for any charges incurred by this procedure.

  • Page 7: Preventive Maintenance/Troubleshooting

    NACD, having stipulated the bill of material number on the unit's nameplate, absolves itself of any responsibility resulting from any external, internal or installation changes made in the field without the express written approval of NACD. All returned parts, new or old, emanating from any of the above-stated changes will not be accepted for credit.

  • Page 8: Safety

    NACD. SOURCES OF SERVICE INFORMATION Each series of maintenance manuals issued by NACD is current at the time of printing. When required, changes are made to reflect advancing technology and improvements in state-of- the-art.

  • Page 9: Warranty

    DESCRIPTION AND SPECIFICATIONS GENERAL INFORMATION The SP318AM and SP318SBAM Series NACD Power Take-Offs are engine-mounted power take-offs that use cast iron one-piece housings and contain an integral clutch 18 inches in diameter. The engine drives the clutch through a drive ring that is bolted to the engine flywheel and connected to the clutch through internal teeth that mesh with external teeth on the clutch friction plate(s).

  • Page 10: Identifying The Sae Housing Size

    28.00 679.45 26.75 14.30 0.563 SPECIFICATIONS Maximum Safe Operating Speeds for NACD Take-offs (Refer to BOM and NACD Power Take-Off Reference Listing) Table 2: Maximum Safe Operating Speeds Ductile Iron Drive Ring Grease PTO Model Lubricated Main Solid Drive Split Drive...
  • Page 11 240-270 degrees SP318SBAM Series 150-180 degrees Filling The Main Bearing Cavity During Initial Assembly (Refers to BOM , NACD Reference Listing on previous pages and Exploded Views in the Illustration Section) Phone: (800) 383-9204 (815) 282-7960 North American Clutch & Driveline...
  • Page 12 Refer to the information contained in the Maintenance section of this manual. Engagement Force On The Operating Shaft Table 7. Torque at Operating Shaft to Engage Clutch Peak Torque on Operating Shaft PTO Model Lb.-Ft. SP318AM Series 691-916 510-676 SP318SBAM Series 691-916 510-676...

  • Page 13: Pto Support Plate Specifications

    See the illustration in Installation Tips in the Installation section of this manual. PTO SUPPORT PLATE SPECIFICATIONS NACD requires that a support plate be used with SP318AM and SP318SBAM series models used in side-load applications and recommends that a support plate be used for in-line applications.

  • Page 14: Wear Limits

    Note: One possible mounting method provides installation ease. Use angle iron to couple the support plate to the engine frame. WEAR LIMITS Table 9. Wear Limits - Bearing Carrier Bore Dimensions (Refer to BOM for the Bearing Carrier/Housing Part Number used in your PTO) Housing, Sheave Bore Dim.
  • Page 15 Table 10. Wear Limits - Shaft Dimensions (Refer to BOM for the Clutch Shaft Part Number used in your PTO) Pilot Bearing Main Bearing Pilot Bearing Shaft Part Illustration Journal (Min) Journal Dim. A (Min) Journal (Min) Number Number inches inches inches A7577AAM...

  • Page 16: Torque Values For Fasteners

    TORQUE VALUES FOR FASTENERS Note: The tables below provide information for several different types of fasteners: U.S. Standard Fine and Coarse Thread Capscrews, Bolts, and Nuts; Metric Coarse Thread Capscrews, Bolts, and Nuts; Tapered Pipe Plugs (with thread lubricant); Straight Threaded Tube Fittings, Hose Fittings, and O-ring Plugs.
  • Page 17 Table 12. Metric Coarse Thread Capscrews, Bolts and Nuts Property Class 8.8 Property Class 10.9 Property Class 12.9 Thread Size lb.-ft. lb.-ft. lb.-ft. 9-10 6.5-7.5 12-14 9-10 14-16 10-12 21-25 16-18 31-35 23-26 34-40 25-29 43-49 32-36 60-68 44-51 70-80 51-59 74-86 55-63...

  • Page 18: Installation

    Table 14. Straight Threaded Tube Fittings, Hose Fittings, and O-Ring Plugs Nominal N-m (+ or - lb.-ft (+ or - Nominal N-m (+ or - lb.-ft (+ or - Thread Dia. Thread Dia. 5/16 M10X1.0 11.5 M12X1.5 7/16 M14X1.5 M16X1.5 9/16 24.5 M18X1.5...
  • Page 19 Alignment The flywheel and flywheel housing alignment must be within specifications. Perform the measurements shown in Prior To Installation in this Installation section. Avoid excessive misalignment between the engine and PTO. Check the following if abnormal wear of parts exists: Excessive loads tend to deflect parts to which PTO's are mounted.
  • Page 20 When mounting the engine and Power Take Off in the machine, a customer-supplied support plate may be required to support the output end of the PTO housing. See the information about customer-supplied support plates and NACD support Plate Specifications contained in the Description and Specification section of this manual.
  • Page 21 Maintenance section for more information. Improper lubrication will result in premature failure of components. DO NOT OVER GREASE! Refer to the NACD Power Take-Off Reference Listing and Filling the Main Bearing Cavity in the Description and Specification section, Lubrication in the Maintenance section near the back of this manual.

  • Page 22: Prior To Installation (Ref;Sae J1033 And J617)

    Consequence, the Power Take-Off should be removed and the source of Interference found and corrected. NACD will not be responsible for system damage caused by engine to NACD match-up regardless of the cause of interference. This engine crankshaft end play check is considered mandatory.
  • Page 23 Measure and record the engine crankshaft or motor shaft endplay using a dial indicator. Record this value, as it will be used later ______ Bolt the indicator to the flywheel so the indicator is perpendicular to the flywheel housing face and the indicator stern rides on the flywheel housing face. Figure 7.
  • Page 24 Remove the indicator base from the flywheel and bolt it to the flywheel housing face. Position the indicator stern so that it rides where the drive ring will set on the flywheel face. Figure 9. Checking Driving Ring Surface of Flywheel Rotate the shaft through one entire revolution and note the face runout of the flywheel.

  • Page 25: Drive Ring Installation

    Figure 11. Checking Pilot Bearing Bore of Flywheel Rotate the shaft through one entire revolution and note the pilot bearing bore eccentricity. The total indicator reading (T.I.R.) must not exceed 0.13 mm. (0.005in.). Note: Eccentricity between the driving ring pilot bore and the pilot bearing bore must exceed 0.20 mm.

  • Page 26: Ball-Type Pilot Bearing Installation

    Drive ring attachment screws must be grade 8. Do not use substitutes. BALL –TYPE PILOT BEARING INSTALLATION SP318AM and SP318SBAM Series Power Take-Off units are pilotless and do not require a pilot bearing. PTO INSTALLATION TO ENGINE OR DRIVING MEMBER Refer to information regarding cleaning and inspection in the Cleaning and Inspection section of this manual before proceeding.
  • Page 27 Do not force the PTO unit unto the engine. If any resistance is noted, repeat the clutch plate centering procedure either in the clutch assembly or final assembly information of the Assembly section to align and centre the friction plates so they mesh properly with the teeth of the drive ring.
  • Page 28 Refer to the NACD Power Take-Off Reference Listing towards the back of this manual. A customer-supplied PTO support plate mounted at the output bearing retainer is to be used. Information about customer-supplied support plates is contained in NACD PTO Support Plate Specifications in the Description and Specifications section of this manual.
  • Page 29 Remove the three guide dowels and replace with the remaining three hex head capscrews. Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section of this manual. Measure Alignment Of The Sheave Mount the dial indicator base on a secure location of the PTO housing.

  • Page 30: Hand Lever Position For Power Take-Offs

    Install the support plate. Refer to support plate information in NACD PTO Support Plate Specifications in the Description and Specifications section, install six ½ x 13UNC – 2A. Torque to 108 Nm. (80 lb. –ft). Note: Verify proper shimming and alignment of the support plate.

  • Page 31: Position And Measure Alignment Of The Sheave

    Contact NACD Service Department for information on use of a stop collar. Figure 17. Use of a stop collar with...

  • Page 32: Allowable Side Loads

    Figure 18. Align Sheaves to Specifications ALLOWABLE SIDE LOADS Figure 19. Allowable Side Pull and Formula to Determine Applied Load (See alternate illustrations for Spread Bearing Models) Phone: (800) 383-9204 (815) 282-7960 North American Clutch & Driveline Fax (815) 282-9160 Rockford, Illinois www.naclutch.com...
  • Page 33 A support plate must be attached at the rear of the PTO if it is subjected to side load operation of the shaft. See the NACD Reference Listing and Support Plate Specifications in the Description and Specifications section of this manual.

  • Page 34: Alignment-U-Joint-Type Installation

    ALIGNMENT - U-JOINT-TYPE INSTALLATION Refer to illustration on next page. To realize the longest possible life of the power take-off bearing, the best possible alignment must be maintained between the centre line of the power take-off shaft and the centre line of the driven unit shaft.

  • Page 35: Setting Up Air Engagement On Power Take Offs

    7 above. All measurements must be within the specifications. If not, repeat steps 5 through 7 until specifications are met. SETTING UP AIR ENGAGEMENT ON NACD POWER TAKE OFFS 1. The cylinder should be located so that the piston moves forward and backward in exactly the same direction as the engagement lever and is aligned so it travels in exactly the same plane.
  • Page 36 5. The engaging cylinder must not place a pressure either in the engaged or disengaged direction after completion of its cycle. The throwout collar must float free after engagement or disengagement. Operating the PTO with contain pressure on the throwout collar will result in failure.
  • Page 37 Engaging Stroke Travel at 25.4mm (1 in.) Model inches SP318AM 8.890 0.350 SP318SBAM 8.890 0.350 SP318SBAM 8.941 0.352 Table 16. Engaging Stroke Travel at 25.4 mm (1.in) Determine the engaging force in pounds required at the cylinder. 8. Divide the force value in the chart below by the length of the hand lever (in inches). This provides the required force (in pounds) that must be provided by the piston.

  • Page 38: Operation

    OPERATION GENERAL INFORMATION Model SP318AM, SP318SBAM Series Power Take –Offs consist of a manually engaged and disengaged disconnect clutch mounted on an output in a cast iron housing that is bolted to the engine. Clutch engagement and disengagement is accomplished by means of an operating lever on the outside of the PTO housing, which actuates an internal linkage mechanism.

  • Page 39: Clutch Engagement Procedure

    Clutch Engagement Where High Inertia Loads Exist NACD recommends that the PTO installation be designed to allow clutch engagement at 1,000 rpm or below. Under extreme circumstances, where high inertia loads must be picked up, the engine may have to be operated at higher speeds while the engagement occurs, as engaging the clutch at 1, 000 rpm or below may result in stalling the engine.
  • Page 40 Clutch Engagement To Clear A Jammed Driven Device Never engage the PTO to un-jam a stuck load. Doing so could result in injury to the operator, and damage to the equipment Always shut the engine off and disengage the clutch before clearing a jamming load. The jam should be cleared, and the output shaft must be rotated to be certain that the jam is completely removed before starting the engine and engaging the PTO.

  • Page 41: Maintenance

    Clutch Adjustment in this Maintenance section. Failure to do so will result in premature clutch wear and failure. Note: NACD will not be responsible for any damage or injury resulting from improper adjustment and/or lubrication. This includes any accessory drives and loads.
  • Page 42 Hand Lever Position 5. Throwout bearing failures may be, among other causes, the result of improper hand lever position. See Hand Lever Adjustment for NACD Power Take-Offs in the installation section of this manual. Alignment 6. The flywheel and flywheel housing alignment should have been set within specifications prior to installation of the power take-off and must be maintained for long service life of the components.
  • Page 43 10. Air engagement mechanisms remain properly adjusted at all times. See Setting Up Air Engagement on NACD Power Take-Offs in the installation section. LUBRICATION Refer to the NACD Power Take-Off Reference Listing in the Description and Specifications section, the exploded views in the illustration section near the back of this manual. Grease Specifications Use NLGI Grade 2 grease with a minimum 149C.
  • Page 44 Figure 22. Lubrication Locations Refer to the NACD Power Take-Off Reference Listing in the Description and Specifications section, the exploded views in the illustration section and Engineering Drawings near the back of this manual. Phone: (800) 383-9204 (815) 282-7960 North American Clutch & Driveline...
  • Page 45 Table 18. Quick-reference lubrication chart. Also see information Item Amount Amount Notes Throwout Collars Every 8 – 10 hrs. NLGI Grade 2 Grease Main Bearings (Grease) Add 1cc Every 8 – 10 hrs. NLGI Grade 2 Grease Operation Shaft Plug hole. 3 months/ 100 hrs.
  • Page 46 Remove the purge plug before grease is added. Add grease through the grease fitting (51) until grease is visible in the open plug hole. Always rotate the shaft while adding grease to the bearing cavity. Run the PTO ½ hour until excess grease drains out. Then reinstall the plug. Note: Bearings will run hot if bearing cavity is overfilled.
  • Page 47 CLUTCH ADJUSTMENT Note: New power take-offs must have clutch adjustment checked before being place into service and after the first 8-10 hours of operation. This includes any power take-offs with new friction plates. New plates have a wear in period and clutch may require several adjustments Before the new plates are worn in.

  • Page 48: Friction Plate Replacement

    FRICTION PLATE REPLACEMENT Refer to the exploded views in the illustrations section. Common symptoms indicating that the friction plates (6) are worn out are: 1. The adjusting yoke (26) cannot be turned clockwise any further. It is necessary to remove and disassemble the clutch assembly to replace the friction plates. Refer to instructions in the Disassembly and Assembly sections of this manual.
  • Page 49 Bearing end play must be 0.025" - 0.035" (0.635mm - 0.889mm) after assembly. The only approved method for measuring bearing play in NACD Power Take-Off units is by the use of a dial indicator to read actual bearing end play.

  • Page 50: Disassembly

    2. Attach an eyebolt in the thread at the output end of the shaft. Attach a hoist with a thrust bearing-equipped swivel hook to the eyebolt. 3. Securely attach a dial indicator to the housing and locate the stem so the tip is contacting the end of the shaft and movement of the tip is exactly vertical, the same direction as the movement of the shaft.

  • Page 51: Power Take-Off Removal From The Engine

    Note: Illustrations use here are to aid in understanding and completing the procedure, and may not appear to be consistent with the previous disassembly steps. Note: Four main bearing configurations are illustrated. Refer to the chart in the Description and Specifications section to determine which configuration is used in your PTO.

  • Page 52: Clutch Removal

    CLUTCH REMOVAL 1. Support the power take-off on a bench with the clutch end facing up. Use wooden blocks under the power take-off. 2. If the pilot bearing (or pilot inner race) remained on the shaft, remove it using a standard bearing puller.

  • Page 53: Clutch Disassembly

    Remove the clutch and puller from the clutch shaft. Remove the hub key if it was not removed with the clutch. CLUTCH DISASSEMBLY All 18 inch model clutches 1. Set the clutch assembly on a bench with the throwout collar facing up. Disengage the clutch. 2.

  • Page 54: Remove The Operating Shaft And Throwout Yoke

    Proceed to Clutch Shaft and Housing Disassembly: Two main bearing configurations are illustrated. Refer to the NACD Power Take-Off Reference Listing in the Description and Specifications section to determine which configuration is used in your PTO.

  • Page 55: Clutch Shaft And Housing Disassembly - Configuration C

    CLUTCH SHAFT AND HOUSING DISASSEMBLY – CONFIGURATION C Figure 27. Illustration – Configuration C 1. Turn the power take-off housing with attached parts over on the bench. Support the housing so the output end of the clutch shaft faces up and is free to rotate. There should be a clearance below the input end of the clutch shaft.

  • Page 56: Clutch Shaft And Housing Disassembly -Configuration D

    6. Remove the shaft (33) with the main bearings (40 and 41) from the bearing carrier (47). If necessary, the bearing carrier may be gently tapped off the bearings. 7. Use an arbour press the shaft out of the bearing (40 and 41). The bearings remove in opposite directions from the shaft shoulder.
  • Page 57 4. Remove the hex head capscrews (65) and remove the rear bearing retainer (64) from the sheave housing if not previously removed. 5. Remove the hex head capscrews (48) that secure the sheave housing (60) to the clutch housing (44) and remove the sheave housing if not previously removed. Note: The inner race of bearing (41) will remain on the shaft.

  • Page 58: Cleaning And Inspection

    CLEANING AND INSPECTION CLEANING AND INSPECTION Bearings 1. Thoroughly wash bearings in clean solvent if they have been in service soak bearings in solvent if they are particularly dirty. Never dry bearing with compressed air. Do not spin bearings while they are not lubricated. Oil bearings with SAE 10 engine oil immediately after cleaning.
  • Page 59 Housings, Cast Parts and Machined Surfaces 5. Replace cast parts or housing that are cracked. 6. Inspect bearing bores for grooved, burred or galled conditions that would indicate that the bearing has been turning in its housing. If the damage cannot be repaired to like-new condition with a crocus cloth, replace the part.
  • Page 60 Shafts, seal lip contact surfaces and bearing journals 9. Inspect machine surfaces for burrs, scratches, nicks and foreign matter. If such defects cannot be removed with crocus cloth or a soft stone, replace the part. 10. Inspect bearing journals on the shaft for grooved, burred or galled conditions that would indicate that the bearing has been turning on the shaft.

  • Page 61: Assembly

    12. Inspect seal journal surfaces on the shaft. Look especially for scratches or nicks that extend above the shaft surface. If they cannot be removed using a fine crocus cloth, replace the part. Seal journal diameters must not be less than the dimensions shown in Wear Limits Description and Specifications section of this manual.

  • Page 62: Clutch Assembly

    CLUTCH ASSEMBLY Bronze Throwout Collar only: ( Ball Bearing Type Throwout Collar skip to step 3.) 1. Lubricate the shoulder of the sliding sleeve (27) with No. 30 engine oil prior to installation of the split collar. Place the throwout collar halves over the sliding shoulder. Install 2 hex head capscrews ½”...
  • Page 63 Figure 34. Assembly of Ball Bearing Type Throwout Collar 4. Install the internal snap ring (31) in the collar. 5. Place the sliding sleeve (27) on the bed of a press with the bearing end up. Press the bearing and collar on the sliding sleeve. The internal snap ring (31) must be up and the top of the bearing must clear the snap ring groove on the sliding sleeve.
  • Page 64 Assembly Of The Plate Stack SP318AM and SP318SBAM Series: 9. Set the hub and back plate (4) on a bench with the threaded and splined section facing up. 10. Install a friction plate (6) on the hub-and backplate Figure 35. Typical SP318AM and SP318SBAM Series plate stack is shown.
  • Page 65 SP318AM and SP318SBAM Series clutches: 15. Install the pressure plate (8) on the top friction plate, meshing the splines of the center plate and install the adjusting lock pin (25) on the spring. 16. Install the adjusting lock pin spring (24) into the pocket in the pressure plate and install the adjusting lock pin (25) on the spring Figure 36.
  • Page 66 19. Place a washer (10) on each clevis pin and install four cotter pins (12). Spread the legs of the cotter pins as shown below. Figure 37. Spread the Cotter pin legs 20. Attach eight lever links (15) one on each side of each of the four clutch levers (9). Secure with four clevis pins (14) and four cotter pins (13).

  • Page 67: Clutch Shaft And Housing Assembly - Configuration C

    Figure 38. Align the Plate Stack Proceed to Clutch Shaft and Housing Assembly: CLUTCH SHAFT AND HOUSING ASSEMBLY – CONFIGURATION C Figure 49. Illustration – Configuration C Phone: (800) 383-9204 (815) 282-7960 North American Clutch & Driveline Fax (815) 282-9160 Rockford, Illinois www.naclutch.com...
  • Page 68 Clutch Shaft 1. Clean the front and rear tapered bearing (40 & 41) and clutch shaft (33) with isopropyl solvent to remove any oil grease residue. Note: Do not use any oil or paraffin based solvents. 2. Se an arbour press to install the two bearings on the clutch shaft. Install the bearings, one from each end, butting against the shoulder on the clutch shaft.
  • Page 69 Bearing Carrier 3. Set the bearing carrier (47) on the bed of a press with the output of the housing facing up. 4. Coat the bearings with a light film of clean No.30 engine oil. 5. Hand pack the bearings with grease as described in the Description and Specifications section. Assembly Install the Clutch shaft and bearing into the bearing carrier.

  • Page 70: Clutch Shaft And Housing Assembly - Configuration D

    12. Attach the support plate if used, and secure the bearing carrier to the clutch housing with six hex-head capscrews (48) and washers (49). Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section. 13.
  • Page 71 5 cm. (2 inches) longer than the distance from the end of the shaft to the shoulder and just slightly larger in inside diameter than the race’s inside diameter. Note: Special tools are not available from NACD, but can be fabricated in any capable machine shop.
  • Page 72 5 cm. (2 inches) longer than the distance from the end of the shaft to the shoulder and just slightly larger in inside diameter than the race’s inside diameter. Note: Special tools are not available from NACD, but can be fabricated in any capable machine shop.
  • Page 73 6. Apply grease to the circumferential cavities in the housing (44) and bearing retainer (38) as a seal against water and contaminants and to the inside surfaces of the housing and bearing retainer that contact the bearing. Figure 54. Apply grease before assembly 7.
  • Page 74 11. Determine the position the sheave housing will be in when the PTO is installed on the engine. The sheave housing must be piloted on both dowel pins. Install the dowel pins (61) in the appropriate holes in the main housing. 12.

  • Page 75: Install The Operating Shaft And Throwout Yoke

    INSTALL THE OPERATING SHAFT AND THROWOUT YOKE 1 Position the clutch housing on a bench with the input end facing up. Install the operating shaft (55) halfway into the clutch housing. Slip the throwout fork (54) onto the operating shaft and push the shaft through to the hole on the other side of the clutch housing far enough to expose one of the woodruff key slots at the centre of the throwout fork.

  • Page 76: Pto Final Assembly

    6. Install the stop collar (76) (if used) per instruction given in Hand Lever Position for NACD Power Take-Offs in the installation section of this manual. (Proceed to PTO Final Assembly) PTO FINAL ASSEMBLY Install The Clutch In The Clutch Housing 1.
  • Page 77 Figure 57. Assembly clutch into Power Take-Off 4. Drive the hub key (29) into position slightly below the surface of the hub-and-back plate (4). Note: Do not use excessive hammer force when installing the key. 5. Install the hub nut lock washer (3) over the clutch shaft (33), locating its tab in the drilled hole on the hub-back plate (4).
  • Page 78 7. Route the flexible hose assembly (19) clear of all moving parts and push the end hose fitting (20) through the hole in the clutch housing. 8. Install the lock washer (21) and jam nut (22) to retain the end fitting (23) in the housing. Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section.
  • Page 79 Figure 58 using the driving ring as an alignment tool Final assembly and lubrication. 11. Install the power-off according to instructions in the installation section of this manual. 12. Adjust the clutch according to Clutch Adjustment in the Maintenance section of this manual. 13.

  • Page 80: Illustrations

    16. Place the bottom cover plate (62), if used, position on the housing and secure with 2-hex- head cap screws 5/16” – 18 X ½ (74). Torque the capscrews to the proper specifications given in Torque Values for Fasteners in the Description and Specifications section. 17.

  • Page 81: Parts Identification List

    PARTS IDENTIFICATION LIST – SP318AM and SP318SBAM Series Washer Hub-and-Back Plate Ring, Drive Plate, Friction Plate, Center Plate, Pressure Lever Washer (lever to pressure plate) Pin, Clevis (lever to pressure plate) Pin, Cotter (lever to link) Pin, Clevis (lever to link) Pin, Cotter (lever to link) Link Pin, Clevis (link to sleeve)
  • Page 82 PARTS IDENTIFICATION LIST – SP318AM and SP318SBAM Series 40. Bearing, Inner 41. Bearing, Outer 44. Housing 45. Plate, Instruction 46. Screw, Machine 48. Screw, Hex-head 50. Fitting 51. Fitting 53. Engagement Handle 54. Release Yoke Assy 55. Shaft, Operating 56. Key, Woodruff 57.

  • Page 83: Exploded View (Sp318Am & Sp318Sbam Series Clutches)

    EXPLODED VIEW (SP318AM and SP318SBAM SERIES CLUTCHES) Typical SP318AM and SP318SBAM Series Clutch (Ball-TypeThrowout Collar Shown) EXPLODED VIEW (SERIES CLUTCH) Typical Series Clutch (Bronze Throwout Collar Shown) Phone: (800) 383-9204 (815) 282-7960 North American Clutch & Driveline Fax (815) 282-9160 Rockford, Illinois www.naclutch.com...

  • Page 84: Exploded View (Configuration C)

    EXPLODED VIEW (CONFIGURATION C) Note: Typical unit illustrated Phone: (800) 383-9204 (815) 282-7960 North American Clutch & Driveline Fax (815) 282-9160 Rockford, Illinois www.naclutch.com...

  • Page 85: Exploded View (Configuration D)

    EXPLODED VIEW (CONFIGURATION D) Note: Typical unit illustrated Phone: (800) 383-9204 (815) 282-7960 North American Clutch & Driveline Fax (815) 282-9160 Rockford, Illinois www.naclutch.com...

  • Page 86: Warranty Statement

    Off products and parts, such warranty shall extend for a period of twenty-four (24) months from the date of original shipment by NACD to the original customer, but not to exceed twelve (12 months of service or one thousand five hundred (1,500) hours of service, whichever occurs first.
  • Page 87 NOTICE NACD makes no warranty or guarantee of any kind, expressed, implied or otherwise, with regard to the information contained within this manual. NACD assumes no responsibility for any errors that may appear in this manual and shall not be liable under any circumstances for incidental, consequential or punitive damages in connection with, or arising out of, the use of this manual.
  • Page 88 P.O. Box 15130 Rockford, IL. 61132 Phone: (800) 383-9204 Fax: (815) 282-9160 www.naclutch.com...

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Sp318sbam series

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