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• PRC 416-P

• PRC 756-P

Planetary Axle Wheel Ends

Maintenance Manual 9F

Issued 05-98
$2.50

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Summary of Contents for PRC 416-P

Page 1: ... PRC 416 P PRC 756 P Planetary Axle Wheel Ends Maintenance Manual 9F Issued 05 98 2 50 ...

Page 2: ...use of special tools for safe and correct service Failure to use special tools when required can cause serious personal injury to service personnel as well as damage equipment and components The instructions contained in this Field Maintenance Manual are intended for use by skilled and experienced mechanics knowledge able in the installation repair and replacement of the AxleTech product described...

Page 3: ...4 Inspect Parts 15 Inspect Tapered Roller Bearings 15 Inspect the Bevel Pinion and Ring Gear Sets 16 Inspect the Main Differential Assembly 17 Inspect the Axle Shafts 17 Inspect the Yoke 17 Inspect the Brakes 17 Repair or Replace Parts 17 Repair Welding 17 Apply Silicone Gasket Material 18 Section 5 Assembly and Installation PRC 416 P Planetary Axle Assemble and Install the PRC 416 P Planetary Axl...

Page 4: ...Notes ...

Page 5: ...al regulations on waste disposal Regulatory Guidance References to OSHA NIOSH MSHA and EPA which are regulatory agencies in the United States are made to provide further guidance to employers and workers employed within the United States Employers and workers employed outside of the United States should consult the regulations that apply to them for further guidance ASBESTOS FIBER WARNING The foll...

Page 6: ...ng 3 12 Snap Ring 1 13 Planetary Sun Gear 1 14 Thrust Washer 1 15 Planetary Ring Gear 1 16 Adjusting Nut Dowel Pin 1 17 Adjusting Nut Assembly 1 18 Outer Bearing Cone 1 19 Outer Bearing Cup 1 20 O Ring 1 21 Wheel Nut 10 22 Wheel Stud 10 23 Hub and Cup Assembly 1 24 Inner Bearing Cup 1 25 Inner Bearing Cone 1 26 Oil Seal Assembly 1 27 Cap Screw 3 4 10 x 2 75 13 28 Washer 13 29 Spindle Assembly 1 30...

Page 7: ...3 13 Snap Ring 1 14 Planetary Sun Gear 1 15 Thrust Washer 1 16 Wheel Bearing Nut 1 17 Planetary Ring Gear 1 18 Capscrew 2 19 Lock 1 20 Planetary Ring Gear Hub 1 21 Outer Bearing Cone 1 22 Outer Bearing Cup 1 23 O Ring 1 24 Hub and Cup Assembly 1 25 Wheel Nut 10 26 Wheel Stud 10 27 Inner Bearing Cup 1 28 Inner Bearing Cone 1 29 Oil Seal Assembly 1 30 Spindle Assembly 1 31 Capscrew 13 32 Hardened Wa...

Page 8: ...d differential assembly of the first reduction supports the roller bearings A hardened precision spacer between the inner and outer bearings adjusts and maintains the pinion bearing preload The positioning of the threaded adjusting rings in the carrier leg and cap bores adjusts and maintains the differential tapered bearing preload Figure 1 1 The teeth of the floating sun gear mesh with teeth of t...

Page 9: ... CAM DLH 17 in 432 mm HYDRAULIC DRUM DUAL LEADING HYDRAULIC DSH 12 5 in 318 mm HYDRAULIC DRUM DUO SERVO HYDRAULIC FSH FLOATING SHOE HYDRAULIC HDB HYDRAULIC DRY DISC ADB DURA MASTER AIR DISC RDA STOPMASTER WEDGE DUAL AIR CHAMBER RDH STOPMASTER WEDGE DUAL HYDRAULIC CYLINDERS RSA STOPMASTER WEDGE SINGLE AIR CHAMBER RSH STOPMASTER WEDGE SINGLE HYDRAULIC CYLINDERS W2H DURA DISC 9 in 229 mm WET DISC W3H...

Page 10: ...l over Serious personal injury can result 1 Make sure the vehicle is on a level surface 2 Place blocks under the wheels not being serviced to keep the vehicle from moving 3 Raise the vehicle so that the wheels of the axle to be serviced are off the ground Support the vehicle with safety stands Refer to the vehicle maintenance manual for instructions on raising the vehicle 4 Remove the wheel nuts a...

Page 11: ...is publication call Meritor s Customer Service Center at 800 535 5560 8 Adjust the brake slack adjuster to retract the brake shoes to produce clearance between the lining and the brake drum WARNING To prevent serious personal injury and possible damage to components be very careful when using lifting devices during service and maintenance procedures Inspect to make sure that neither lifting strap ...

Page 12: ... with a steel hammer Pieces of a part can break off and cause serious personal injury CAUTION To avoid damage to the pinion shaft provide a soft cushioned area to receive the pinion shaft when it is removed from the spider 4 Use a press to remove the pinion shafts If a press is not available use a brass drift and mallet to drive out the shaft Press or drive the pinion shaft out toward the large fl...

Page 13: ...ponents be very careful when using lifting devices during service and maintenance procedures Inspect to make sure that neither lifting strap is damaged Do not subject lifting loops or lifting straps to any shock or drop loading WARNING Removal of the capscrews allows the spindle and brake assembly to separate They can fall from the planetary axle housing and cause damage to components and serious ...

Page 14: ...ll over Serious personal injury can result 1 Make sure the vehicle is on a level surface 2 Place blocks under the wheels not being serviced to keep the vehicle from moving 3 Raise the vehicle so that the wheels of the axle to be serviced are off the ground Support the vehicle with safety stands Refer to the vehicle maintenance manual for instructions on raising the vehicle 4 Remove the wheel nuts ...

Page 15: ...just the brake slack adjuster to retract the brake shoes to produce clearance between the lining and the brake drum WARNING To prevent serious personal injury and possible damage to components be very careful when using lifting devices during service and maintenance procedures Inspect to make sure that neither lifting strap is damaged Do not subject lifting straps to any shock or drop loading 9 Us...

Page 16: ...s Do not hit steel parts with a steel hammer Pieces of a part can break off and cause serious personal injury CAUTION To avoid damage to the pinion shaft provide a soft cushioned area to receive the pinion shaft when it is removed from the spider 7 Use a press to remove the pinion shafts out of the spider If a press is not available use a brass drift and mallet to drive out the shaft Press or driv...

Page 17: ...ng strap is damaged Do not subject lifting straps to any shock or drop loading Removal of the capscrews allows the spindle and brake assembly to separate They can fall from the planetary axle housing and cause damage to components and serious personal injury 1 To prevent the spindle and the brake spider from falling after all the mounting capscrews are removed use one of the following procedures a...

Page 18: ...E GASOLINE 2 Remove gasket material from parts Take care not to damage ground surfaces 3 DO NOT clean ground or polished parts in a hot solution tank water steam or alkaline solution Clean Parts With Rough Finish 1 Use cleaning solvent or a hot solution tank with a weak alkaline solution to clean parts with a rough finish 2 Leave parts in the hot solution tank until they are completely cleaned and...

Page 19: ...ngs in the assembly If any of the following conditions exist replace the bearing The centers of the large diameter end of the rollers are worn level with or below the surface The centers of the large diameter end of the rollers are worn to a sharp edge Figure 4 1 A visible roller groove is worn in the cup or cone inner race surfaces You can see the groove at the small or large diameter ends of bot...

Page 20: ...e assembly will result if a new part is used in combination with parts that are older or worn Inspect the bevel drive pinions and ring gears for wear and damage Gears that are worn or damaged must be replaced Also verify the condition of the bearing cone seats and spline on the pinion shaft Deep cracks or breaks are present in the cup cone inner race or roller surfaces Bright wear marks are presen...

Page 21: ...mbly The following are some examples to check for repair and possible replacement Replace any fastener if corners of the head are worn Replace washers if damaged Replace gaskets oil seals or grease seals at the time of axle repair Clean parts and apply new liquid gasket material where required when axle is assembled Remove nicks marks and burrs from parts having machined or ground surfaces Use a f...

Page 22: ...terial gets into your eyes flush them with water for 15 minutes Have your eyes checked by a doctor as soon as possible 1 Remove all old gasket material from surfaces of both components 2 Clean the surfaces where liquid gasket material will be applied Remove all oil grease dirt and moisture 3 Thoroughly dry both surfaces CAUTION The amount of liquid gasket material applied to component surface must...

Page 23: ...e present To prevent possible serious injury the work area must be well ventilated If the silicone gasket material gets into your eyes flush them with water for 15 minutes Have your eyes checked by a doctor as soon as possible 2 Apply a 0 125 inch 3 18 mm diameter continuous bead of silicone gasket material around the flange mounting face of either the axle housing or the spindle Also apply the ga...

Page 24: ...unting capscrews and washers to 35 50 lb ft 47 68 N m Assemble the Wheel End 1 Press the new inner and outer bearing cups into the wheel hub 2 Position the wheel hub with the oil seal bore facing UPWARD 3 Apply axle gear lubricant to the bearing rollers and install the inner wheel bearing cone CAUTION Do not damage the hub oil seal bore surface in the wheel hub Damage to this surface will result i...

Page 25: ... the adjusting nut 7 Install the planetary ring gear onto the spindle The dowel pin in the adjusting nut must be installed in the hole in the ring gear face to allow the ring gear to seat against the adjusting nut 8 Apply a thin layer of axle grease to the face of the sun gear thrust washer 9 Install the sun gear thrust washer The washer tangs must engage the holes in the ring gear 10 Install the ...

Page 26: ...rrect installation the planetary pinions must contact both the sun gear and the ring gear before installation 1 Install the planetary spider and gearing assembly onto the wheel hub 2 Install the five slotted head screws that attach the planetary spider to the wheel hub Hand tighten the screws Seat the head of each screw below the surface of the spider flange 3 Install the brake drum over the wheel...

Page 27: ...vent possible serious injury the work area must be well ventilated If the silicone gasket material gets into your eyes flush them with water for 15 minutes Have your eyes checked by a doctor as soon as possible 2 Apply a 0 125 inch 3 18 mm diameter continuous bead of silicone gasket material around the flange mounting face of either the axle housing or the spindle Also apply the gasket material ar...

Page 28: ...mshaft bracket is installed onto the brake spider Refer to Meritor Maintenance Manual No 4 Cam Brakes To order this publication call Meritor s Customer Service Center at 800 535 5560 8 Install the brake camshaft bracket with the O ring on the pilot onto the brake spider 9 Install the four mounting capscrews and washers Tighten the capscrews to 85 115 lb ft 115 156 N m 10 Install the brake camshaft...

Page 29: ...octite to avoid serious personal injury Follow the manufacturer s instructions to prevent irritation to the eyes and skin If Loctite gets into your eyes flush them with water for 15 minutes Have your eyes checked by a doctor as soon as possible 7 Install the lock plate mounting screws Tighten the mounting screws to 20 30 lb ft 27 41 N m a New lock plate mounting screw threads come equipped with a ...

Page 30: ...on shafts into the spider until the pinion shaft inner shoulders contact the thrust washers WARNING When you apply some silicone gasket materials small amounts of acid vapor are present To prevent possible serious injury the work area must be well ventilated If the silicone gasket material gets into your eyes flush them with water for 15 minutes Have your eyes checked by a doctor as soon as possib...

Page 31: ...ree locations must be filled The vehicle must be on a level surface when filling Fill to the bottom of each fill plug hole Wait and allow the oil to flow through the axle Check the oil level again and fill to the specified level if necessary 9 Add the correct axle lubricant into each wheel end through the fill level hole in the planetary spider cover at the horizontal position 3 or 9 o clock 10 Ad...

Page 32: ...N m 3 Oil fill level drain plug 35 lb ft 47 N m 4 Planetary spider to wheel hub slotted head screw Hand tighten no specification 5 Spindle and brake spider mounting 310 400 lb ft 420 542 N m 6 Camshaft bracket clamp 35 50 lb ft 47 68 N m 7 Camshaft bracket to spider 85 115 lb ft 115 156 N m 8 Wheel bearing adjusting nut Refer to instructions on page 12 1 8 2 3 4 5 6 7 ...

Page 33: ...m 3 Planetary spider cover 35 50 lb ft 48 68 N m 4 Wheel bearing adjusting nut Refer to instructions on page 25 5 Planetary spider to wheel hub slotted head screw Hand tighten no specification 6 Camshaft bracket to spider 85 115 lb ft 115 156 N m 7 Camshaft bracket clamp 35 50 lb ft 47 68 N m 8 Spindle and brake spider mounting 375 430 lb ft 508 583 N m 1 2 3 4 5 6 7 8 ...

Page 34: ...er comes first Change The interval depends on the individual operating conditions speeds and loads Severe operating conditions may require more frequent intervals Lubrication Specifications Outside Temperature Military AxleTech Specification Oil F C Specifications Approval Description Min Max Min Max O 76A Gear Oil GL 5 SAE 85W 140 10 None 12 None O 76D Gear Oil MIL L 2105D GL 5 SAE 80W 90 15 None...

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Page 36: ...830 Troy Michigan 48084 Boite Postale 656 Centro Osasco SP U S A 42042 Saint Etienne Cedex 1 06097095 Brasil Toll Free 877 877 9717 France Phone 55 11 36846641 Non Toll Free 248 816 5401 33 477 92 88 00 FAX 55 11 36846859 FAX 248 435 1990 FAX 33 477 92 88 93 Website www axletech com MM 9F Copyright AxleTech International Issued 05 98 Printed in the USA ...

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