FT5448
Service Bulletin Details
Public Details for: FT5448
Rework allied motion e-steering motor. 24v e-steering power supply threads length tolerances might not be respecting to the drawing specifications.
Models from 2021
2021 NOVA BUS LFS |
Models from 2020
2020 NOVA BUS LFS |
FAST TRACK FT5448 REFERENCE: Nova Bus Manuals SECTION: 09: Engine and Cooling RS NO: MQR 7621-2653 EFFECTIVE IN PROD.: NA SUBJECT: Rework allied motion e-Steering motor. JUSTIFICATION: 24V e-steering power supply threads length tolerances might not be respecting to the drawing specifications. LEVEL 1 APPLICATION DEADLINES: 2024DE13 CLAIM REFERENCE NUMBER:WB-5448 DIRECT CHARGES DESCRIPTION Installation of steel ball on the terminals. – 2 TIME LABOUR MATERIAL Nova Bus Nova Bus 0.33 h – – – MATERIAL REQUIRED PER VEHICLE QTY PART NO REV. DESCRIPTION – – – N620000252 – 3/16 Steel Ball – NCP2 Anticorossive (32 oz of one can) LEVEL 1 – LEVEL 2 2 SHOP SUPPLIES 4ml N67314 Materials will be available within 32 days once your order has been placed. To order, please contact [email protected] Or by phone for CANADA 1-800-771-6682, for USA 1-877-999-8808 Specify document number, quantity of parts required and shipping address. DISPOSAL OF PARTS REMOVED PARTS ARE: DISCARDED * RETAINED – –– * Dispose of the unused parts and the defective parts in accordance with local environmental standards in effect. REVISION HISTORY REV. DATE NR 2023OC31 APPROVED BY: NQF772001 VERSION 3 CHANGE DESCRIPTION Initial release Eric Charest WRITTEN BY Nandan B S Signature numérique de Eric Charest Date : 2023.10.31 15:23:55 -04'00' PAGE 1 OF 10 FAST TRACK ROAD NUMBER CLIENT ORDER FROM TO FT5448 VIN (2NVY/4RKY...) FROM TO QTY New York City Transit New York - NYCT LC78 9620 — L82L4L9777581 L82L6L9777582 2 New York City Transit New York - NYCT Demo LD23 — 9621 L82LXL9777634 L82L5L9777668 3 New York City Transit New York - NYCT LC79 9623 9703 L82L1M9777782 L82LXM9777862 81 New York City Transit New York - NYCT LC79 9704 9784 L82L1M9777863 L82L4M9777954 81 New York City Transit New York - NYCT LD64 9785 9805 L82L0M9777871 L82L5M9777980 21 New York City Transit New York - NYCT LD64 9806 9806 L82L7M9777981 L82L7M9777981 1 New York City Transit New York - NYCT LD64 9807 9811 L82LXM9777988 L82L1M9777992 5 New York City Transit New York - NYCT LD64 9812 9812 L82L3M9777993 L82L3M9777993 1 New York City Transit New York - NYCT LD64 9813 9828 L82L5M9777994 L82L7M9778015 16 New York City Transit New York - NYCT LD64 9829 9832 L82L4M9778022 L82LXM9778025 4 New York City Transit New York - NYCT LD64 9833 9843 L82L1M9778026 L82LXM9778039 11 New York City Transit New York - NYCT LD64 9844 9844 L82L1M9778043 L82L1M9778043 1 New York City Transit New York - NYCT LD64 9845 9910 L82L3M9778044 L82L1M9778155 66 PAGE 2 OF 10 NQF772001 VERSION 3 FAST TRACK FT5448 Tools Required • 1/4 Inch lb. Torque wrench • 3/8 Drive torque wrench • 10 mm box and open wrench • 1/4 drive 10 mm socket and rachet CAUTION You must shut down, lock out, and tag out the 12/24-Volt system before starting work on the 24-Volt electric steering mechanism. NOTE Mechanical/manual steering will remain functional, if the power steering system becomes disabled. WARNING FOLLOW YOUR INTERNAL SAFETY PROCEDURES. PROCEDURE 1.1. Park the vehicle on an even surface with the transmission on neutral. 1.2. Apply the parking brake and set the master control switch to the stop position. PAGE 3 OF 10 NQF772001 VERSION 3 FAST TRACK 1.3. FT5448 Locate the 24V power source within the battery box and disconnect it from the bus and securely place a lockout/tagout device on the switch to ensure safety. Allow a 10 minutes after the battery disconnect switch has been placed in the off position(see figure 1). Figure 1 - Location of the 24V power source PAGE 4 OF 10 NQF772001 VERSION 3 FAST TRACK 1.4. FT5448 To access the e-steering system lift the bus to chest height and then open bus front street side compartment (see figure 2). Figure 2 - Location of the E-steering motor to access 1.5. To access the e-steering motor with a square key and a 13mm wrench Loosen the 13mm bolt swing the bolt downwards and utilize the square key to turn the lock and swing out the power steering reservoir (see figure 3). 13mm Bolt Figure 3 - Access to the E-steering motor PAGE 5 OF 10 NQF772001 VERSION 3 FAST TRACK 1.6. FT5448 Remove the two blocks nearest to the terminals using a 10mm socket for the bolts and retain for reuse (see figure 4). Two cable blocks Figure 4 - Removal of two cable blocks 1.7. Disconnect the positive (+) and negative (-) cables nut connected to the stud using a 17mm socket retain nuts (see figure 5). Cable nuts Figure 5 - Disconnecting the positive and negative cable nuts PAGE 6 OF 10 NQF772001 VERSION 3 FAST TRACK 1.8. FT5448 Utilizing a measuring device. Measure the length of both the positive (+) and negative (-) studs length, the stud length should be between 15mm and 19mm (see figure 6). Figure 6 - Measuring the length of positive and negative studs NOTE If the studs are not within the tolerance of 15mm min and 19mm max. proceed to step (1.10). If the studs are within the tolerance 15mm min and 19mm max. proceed to step (1.11). PAGE 7 OF 10 NQF772001 VERSION 3 FAST TRACK 1.9. FT5448 Unscrew the stud using a 5mm Allen key and Insert just one steel ball N620000252 and reinstall the studs. Measure the length of the studs and make sure that they are within specifications (see figure 7). Figure 7 - Installation of Steel Ball PAGE 8 OF 10 NQF772001 VERSION 3 FAST TRACK 1.10. FT5448 Re-install the motor positive (+) and negative (-) cables with torque values and apply anticorrosive NCP2 on re-connected cables (see figure 8). NOTE Positive Torque 10+1Nm or 88 to 97 lbf-in. Negative Torque 20+3Nm or 177 to 203 lbf-in. Figure 8 - Re-installation of motor (+) and (-) cables and apply anticorrosive NCP2 on cables PAGE 9 OF 10 NQF772001 VERSION 3 FAST TRACK 1.11. FT5448 Re-install the retained hose blocks using a 10mm socket and apply torque on the bolts to 10 N-m/88 lbs-in (see figure 9). Figure 9 - Re-installation of retained Cable Blocks 1.12. Vehicle ready for service. PAGE 10 OF 10 NQF772001 VERSION 3