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NACD C110AM, Manual

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NACD C110AM Manual Download Page 22

North American Clutch & Driveline

Rockford, Illinois

Phone: (800) 383-9204

(815) 282-7960

Fax (815) 282-9160

www.naclutch.com

22

4. Check the endplay as follows:

a. Mount a dial indicator with the stem resting on the end of the shaft. Mark a spot adjacent to 
the in  dicator stem.

b. Use a hoist and fish scale to raise the shaft with 200 lbs. force.

c. Rotate the shaft two revolutions in each direction, stop on the spot, and zero the indicator.

d. Apply 200 lbs. downward pressure to the shaft and rotate it two times in each direction. Stop 
with stem on the spot

e. The indicator reading is the endplay.

f. Tighten or loosen the bearing adjusting nut to obtain .004" - .008" endplay. Lift the shaft with 
200 lbs. (plus the weight of the shaft) force between adjustments to seat the forward bearing 
outer race against the retainer. Recheck endplay.

6. After adjusting endplay, lock or secure adjusting nut and grease bearings.

NOTE: After main bearings have been greased, operate the PTO at half speed for ten minutes. 
Then wipe away discharged grease before starting normal operation.

Side Load Deflection

Side loads applied to PTO clutch shafts tend to deflect parts to which PTO's are mounted.

Excessive side loading can damage parts of the PTO and engine. Deflection must be checked 
before operation of the PTO.

Summary of Contents for C110AM

Page 1: ...C110AM C111AM Includes Installation Operation Maintenance and Overhaul Instructions NACD Power Take Off Service Manual 1015408AM ...

Page 2: ...North American Clutch Driveline Rockford Illinois Phone 800 383 9204 815 282 7960 Fax 815 282 9160 www naclutch com ...

Page 3: ...d be employed as necessary to assure that safe operations and a safe environment exist under prevailing conditions Use proper guards and other suitable safety equipment devices and procedures that may be desirable or specified in safety codes or as necessary to prevent accidental injury to person s or property These devices are neither provided by NACD nor are they the responsibility of NACD OWNER...

Page 4: ...800 383 9204 815 282 7960 Fax 815 282 9160 www naclutch com INTRODUCTION TROUBLE SHOOTING DISASSEMBLY AND ASSEMBLY CLEANING AND INSPECTION UNIT ASSEMBLY AND INSTALLATION PRIOR TO INSTALLATION ENGINEERING DRAWINGS AND DATA 6 9 10 12 15 17 26 TABLE OF CONTENTS ...

Page 5: ...quipment should have this manual at their disposal and be familiar with its contents Applying the information in the manual will result in consistent performance from the unit and help reduce down time REPLACEMENT PARTS Parts Lists Illustrations with complete parts listings are provided in appropriate sections of the manual to facilitate ordering spare or replacement parts All replacement parts or...

Page 6: ...and serial number of the unit involved These numbers are stamped on the unit s nameplate Parts Shipment Furnish the complete shipping destination and postal address All parts shipments made from NACD will be FOB or EXWorks Machesney Park Illinois USA State specifically whether the parts are to be shipped by freight express etc If shipping instructions are not speci fied on the order the equipment ...

Page 7: ...pairs necessary to get a unit back into operation LIFTING BOLT HOLES Most NACD products have provisions for at taching lifting bolts The holes provided are always of adequate size and number to safely lift the NACD product These lifting points must not be used to lift the complete power unit Lifting excessive loads at these points could cause failure at the lift point or points and result in damag...

Page 8: ...fety codes should be provided These devices are neither provided by NACD nor are they the responsibility of NACD SOURCE 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 For the latest service information on any NACD prod ucts contact any NAC...

Page 9: ... the clutch housing with wooden blocks on a work bench with the clutch end of the unit facing up 5 Use a standard bearing puller and remove the pilot bearing 25 from the clutch shaft 6 Remove the jam nut 6 and the lock washer 151 from the fitting 150 located in the clutch housing Push the grease fitting 5 with the fitting 150 into the clutch housing SYMPTOM Clutch slippage Clutch dragging Excessiv...

Page 10: ...h the clutch assembly 9 Pull the adjusting lock pin 115 out and lock in the out position by inserting a piece of wire or a small nail in the cross drilled hole of the pin Rotate the adjusting yoke assembly 113 and sliding sleeve assembly 10 in a counterclockwise direction until they are removed from the threaded hub of the hub and back plate 109 10 Remove the floating plate 112 the driving plate 1...

Page 11: ...cup 9 from the clutch housing 18 Remove the round head capscrews 4 that secure the instruction cover plate 2 to the clutch housing 19 Loosen the hex head capscrew 20 that secures the hand lever 20 to the operating shaft 14 Remove the hand lever from the operating shaft 20 Loosen the hex head capscrews 17 and lock washers 17 installed in the throwout yoke 17 Gently tap one end of operating shaft 14...

Page 12: ...of Dirt into Bearings Dirt and grit in bearings are often responsible for bear ing failure consequently it is important to keep bear ings clean Do not remove grease from new bearings Keep the wrapper on new bearings until they are to be installed Do not expose clean bearings if they are not to be assembled at once Wrap them with a clean lint free cloth or paper to keep out dust INSPECTION Housings...

Page 13: ...that would indicate that the bearing has been turning in its housing or on its shaft If the damage cannot be repaired with a crocus cloth replace the part Bushings and Sleeves Inspect bushings for size and out of roundness scores burrs sharp edges and evidence of overheating Remove scores with crocus cloth If the bushing is out of round deeply scored or excessively worn replace it Splined Parts In...

Page 14: ...ne bearing cone 9 on the shaft 8 with the wide face of the inner race facing the shoulder on the drive shaft Place a steel ring approximately 25 thick over the shaft resting against the narrow race of the bearing cone Do not allow any pressure to be applied against the bearing cage at any time A damaged cage will cause bearing failure Support beneath the steel ring on the bed of a press Press the ...

Page 15: ...ins 409 and cotter pins 410 Spread cotter pins Secure the four finger levers 123 to the lever links 414 with four lever link pins 415 and four cotter pins 413 Spread cotter pins To prevent interference with adjacent parts the cotter pins must not extend beyond 0 38 radius of pin center after spreading 11 Install the adjusting lock pin spring 152 and the adjusting lock pin 115 in the adjusting yoke...

Page 16: ...directly onto the flywheel of the engine Flywheel to driven component interference is possible due to mismatch of components or other reasons Therefore engine crankshaft endplay as well as flywheel alignment check must be made before the driven component is installed After installation of the driven component crankshaft endplay should be measured again Endplay at the second measurement should be t...

Page 17: ...lywheel Housing Tolerances 3 With the indicator mounted as in the above paragraph adjust the indicator stem so that it will ride on the bore of the engine flywheel housing See Figure 3 4 Rotate the engine flywheel and note the bore ec centricity of the engine flywheel housing bore See Table 2 5 Bolt a thousandths dial indicator or gauge to the engine flywheel housing so that the indicator is perpe...

Page 18: ...ct reading 7 Readjust the indicator so that the stem will ride on the pilot bearing bore of the flywheel See Figure 5 Rotate the flywheel The eccentricity of the pilot bearing bore should not exceed 0 005 maximum total indicator reading Eccentricity between the driving ring pilot bore Figure 6 and pilot bearing bore Figure 5 should not exceed 0 009 inch total indicator reading INSTALLATION Avoid e...

Page 19: ...y together and meshing the driving ring with the driving plates Secure the PTO to the flywheel housing with twelve hex head capscrews and remove the guide studs used Use SAE standard torque rating to torque capscrews 4 Rap the end of the output shaft with a soft hammer to relieve any preload due to the pilot bearing being pressed into the flywheel ADJUSTMENTS CLUTCH General Periodic clutch adjustm...

Page 20: ...iminish to the point where the clutch fails to carry the load slippage or if facing s have overheated After wear in clutch adjustment should be checked regularly Heavy duty applications rock crushers etc which have frequent engagements with long periods of clutch slippage will require more frequent adjustments than light duty applications Need for clutch adjustment is also indicated if the clutch ...

Page 21: ...its has a cast hex adapter onto which a socket can be placed and a torque wrench can be used to check the operating shaft torque BEARINGS NOTE Do not add grease until the tapered roller bearings are adjusted The only approved method for adjusting tapered roller bearings in NACD power take offs is as follows 1 Tighten the adjusting nut see Figure 8 and rotate the shaft to align and seat bearing rol...

Page 22: ...he spot e The indicator reading is the endplay f Tighten or loosen the bearing adjusting nut to obtain 004 008 endplay Lift the shaft with 200 lbs plus the weight of the shaft force between adjustments to seat the forward bearing outer race against the retainer Recheck endplay 6 After adjusting endplay lock or secure adjusting nut and grease bearings NOTE After main bearings have been greased oper...

Page 23: ... install the drive Deflection must not exceed 0 10 inch DRIVING PLATE REPLACEMENT Common symptoms indicating the driving plate is worn out the adjusting yoke cannot be screwed up any tighter and in the case of molded driving plates the entire plate must be replaced Wherever split driving plates are used these may be replaced by unbolting power take off housing from engine in order to gain access t...

Page 24: ... engine crankshaft could result from trapped grease pressure Clutch shaft normally will not be drilled If drilled a plug should be installed to prevent inadvertent greasing Lubricant Use any high grade high temperature lithium base NLGI 2 lubricant with an EP additive for anti friction bearings having operating temperatures of 200 degrees F Figure 10 Checking Deflection with Direction of Load Unkn...

Page 25: ...North American Clutch Driveline Rockford Illinois Phone 800 383 9204 815 282 7960 Fax 815 282 9160 www naclutch com 25 Figure 12 Exploded View ...

Page 26: ... prevent severe vibrations from occurring in the drive shaft Second the center lines of the PTO shaft and driven member input shaft must be offset within the limits recommended by the universal joint manufacturer to prolong the life of the universal joint needle bearings Third and very important the center lines of the PTO shaft and driven member input shaft must be parallel This will further prev...

Page 27: ...ft If C and D vary more than 1 8 inch measured 18 inches from the shaft center the engine should be moved until the difference is brought within 1 8 inch After setting C and D A and B should be rechecked and reset if required Repeat this procedure until distances A and B and C and D are equal to each other within 1 8 inch measured 18 inches from shaft centers After setting as described above the e...

Page 28: ...aring on clutch shaft flush with end of shaft 2 Place unit on bench with clutch shaft vertical as shown 3 Measure dimension A as shown in figure 1 4 Installation dimension B for bearing outer race is determined by subtracting the bearing width shown in figure 3 from dimension A B A Brg Width 5 Install bearing outer race and roller assembly into flywheel cavity to dimension B ...

Page 29: ...ar 4 To assemble press the ball bearing 3 into the collar 4 Install the internal snap ring 2 into the collar 4 to retain the bearing Press the collar and ball bearing into the sleeve 1 using force on the bearing inner race only Install the external snap ring 5 to retain the bearing and the collar on the sleeve Alternate Ball Bearing Throwout Collar Assemblies A ball bearing throwout collar feature...

Page 30: ...vice 5 The warranty is void unless the product or part is properly installed and maintained within the rated capacity of the product or part with installations properly engineered and in accordance with the practices methods and instructions approved or provided by NACD 6 The warranty is void unless all required replacement parts or products are of NACD origin or are NACD authorized replacement pa...

Page 31: ...ed 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 The information contained within this manual is subject to change without notice ...

Page 32: ...North American Clutch Driveline P O Box 15130 Rockford IL 61132 Phone 800 383 9204 Fax 815 282 9160 www naclutch com ...

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