NP & NS Drive Hub Service Tools
Contents
1. lett ff SERVICE BULLETIN Subsidiary of Federal Signal Corporation Subject Recall For Replacement of Pelican NP 1300 West Bartlett Road and NS Guide Wheel Seals Elgin Illinois 60120 7529 Phone 847 741 5370 Fax 847 622 7077 DATE 07 23 2009 NUMBER SB 0014 TO All Dealer Principals Service Managers Parts Managers and Regional Managers ALWAYS REFER TO THE OPERATOR MANUAL FOR SAFETY INSTRUCTIONS BEFORE STARTING WORK INTENT Some NP and NS guide wheels may have seals incorrectly assembled in the hub This recall requires replacement of wheel seals used for all NP and NS guide wheels re packing wheel bearings and re assembly of the hubs including proper bearing preload Order two 7077509 seals for installation on each sweeper Be prepared to install the bearing hub parts for use if replacement is necessary UNITS TO SERVICE NP0O101 NP1100D NS0101 NS0917S NRO101 NR1128D SPECIAL TOOLS Seal Installation Tool P N 7970360 PARTS AVAILABILITY 07 20 09 PARTS REQUIRED HUB PARTS USE AS NEEDED FOR REPAIR Qty Part No 7077509 Guide Wheel Hub Seal 7077504 as req 1081485 as req as req as req 1081667 as req as req 7077505 as req 6183819 as req 7077503 Guide Wheel Hub includes bearings hub and seals Hub is assembled but not lubricated see Page 4 1081485 Axle Contact Elgin Service Department for instructions PROCEDURE 1 Park the Pelican in a level work area F2. IMPORTANT Do not mix grease types or brands when lubricating wheel bearings Use a commercial wheel bearing packer available at auto supply outlets or a suitable hand packing technique Place the bearing into the packer with the taper matching the cone of the bearing packer FIGURE 3 12 Tighten the cap of the packer until it is snug on the bearing eae 13 Pump grease until the grease is pushed out from the E bearing FIGURE 4 SB 0014 2 4 EFFECTIVE DATE 07 09 PROCEDURE Cont d 14 15 16 ive 18 19 20 Place the packed bearing into the hub FIGURE 5 Use seal installation tool to install the bearing seal Place the seal so that it engages the pilot surface FIGURES 6 7 8 9 10 Verify that the seal lip is facing out Place the hub onto the spindle Make sure that the bearing is straight on the spindle and push into place Pack the outer bearing with grease repeat Step 13 and place the bearing into the hub FIGURE 11 Add the spindle washer 1081743 and the spindle nut 1081742 to the wheel hub assembly Tighten to a torque of 100 lb ft and then turn counterclockwise 1 6 of a turn making sure the cotter pin 5005490 can be installed 1 6 of a turn is represented by the two lines in Fig 12 Bend the cotter pin as shown in FIGURE 13 Using a hand grease gun add grease until a small amount appears at the seal Seal installation should allow grease to flow
3. freely past the seal without causing damage to the seal IMPORTANT Do not mix grease types or brands when lubricating wheel bearings SB 0014 HM 1 Toward Tool EFFECTIVE DATE 07 09 Inner Bearing Cup Outer Bearing Cup Seal not shown Outer Bearing Cone Inner Bearing Cone oll Warranty Coverage and Claim Submittal The ESG dealer should submit a claim for warranty In accordance with FSESG published policy reimbursement for travel will be at 12 the dealers standard warranty labor rate for actual travel time up to a maximum of 3 hours Any exceptions from standard travel time or flat rate labor hours will require pre approval by the Regional Service and Parts Manager If travel is claimed the machine address must be provided in the appropriate field on the warranty claim Use the following information when submitting a warranty claim CAUSAL PART 7077509 To create the FAULT CODE click_ chassis click steering control _ and then click_guide wheel strut axle bearings In the FAULT FOUND dropdown list select_ leaks In the CAUSED BY dropdown list select_ improperly installed__ To enter the Service procedures perform the following For INSTALLED PART _ 7077509 __ select chassis select steering control _ and then select_guide wheel strut axle bear ings then select_repack_ SRT of 2hrs and Omin is allowed OR Remove and re
4. IGURE 1 Apply the park brake turn the engine off and securely chock the drive wheels 3 Raise the guide wheels off the ground and place suitable jack stand supports under the rear frame of the sweeper 4 Remove the Guide Wheels from the hubs as instructed in the NP NS Service Manual EFFECTIVE DATE 07 2009 1 4 PROCEDURE Cont d 5 Loosen the spindle nut and remove the hubs from the sweeper steering axle FIGURE 2 6 Clean the hubs thoroughly and replace them if they are damaged 7 Clean the bearings thoroughly and inspect the hub components for damage If bearing rollers are galled chipped or damaged replace the cups with new parts Always replace bearing cones if cups are replaced Do not mix new and used bearing assemblies 8 Ifthe bearing cones are damaged loose in the hub bores or otherwise damaged replace with new cones 9 Ifthe axle spindles are damaged or the inner races have galled the shaft replace the axle by pressing a new axle into the lower housing Call Elgin Service Department for axle replacement instructions 10 The inner hub bearing should be test fit on the spindle If the bearing does not fit onto the shaft easily apply a light coating of grease to the shaft Note DO NOT USE A HAMMER TO FORCE THE BEARING ONTO THE SPINDLE 11 Remove the inner bearing from the spindle Pack the bearing with grease Shell Retinax LX2 or equivelent grease recommended for wheel bearing applications
5. place for SRT of 2hr and 30min SB 0014 4 4 EFFECTIVE DATE 07 09
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