INSTRUCTION TO SERVICE
ITS: 6785
SECTION:

284

WRITTEN BY:

Talha Wasif

SUBJECT:

Add relay for Auto Neutral signal to TCM

Electrical Panels

ITS6785

THIS DOCUMENT AND THE CONTENTS DISCUSSED HEREIN ARE THE CONFIDENTIAL AND
PROPRIETARY INFORMATION OF NEW FLYER INDUSTRIES CANADA ULC AND NEW FLYER OF
AMERICA INC. AND ARE DISCLOSED BY NEW FLYER IN CONFIDENCE. THIS DOCUMENT AND THE
CONTENTS HEREIN ARE NOT TO BE DISCLOSED BY THE INTENDED RECIPIENT WITHOUT THE PRIOR
WRITTEN AUTHORIZATION OF NEW FLYER. ANY UNAUTHOIZED DISCLOSURE, REPRODUCTION OR
OTHER DISTRIBUTION OF THIS DOCUMENT OR INFORMATION IS STRICTLY PROHIBITED AND MAY
RESULT IN ACTION BEING TAKEN AGAINST THE PARTY MAKING THE UNAUTHORIZED DISCLOSURE.
THIS DOCUMENT AND ALL COPIES HEREOF MUST BE RETURNED TO NEW FLYER UPON REQUEST.

PROCEDURE:
1. Turn the main battery disconnect switch to the “OFF” position by accessing it through the fuse box panel on the
rear curb side of the bus.
2. Gain access to the rear panel by removing the rear panel cover. See Figure 1 for reference.

Rear panel

Figure 1: Rear Panel location in the bus
3. Locate connector J2 in Node 15. See Figure 2 for reference.

J2-Node 15

XTR34 &
XTRMODE
B

Figure 2: Rear Panel connectors

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4. Remove wire 10TR87B from connector NODE 15-J2 cavity 9. Cut off the terminal and terminate with supplied
terminal TERM-BF 1/4 16-12AWG NIN (P/N: 001846).
5. Remove wire 10TR87G from connector NODE 15-J2 cavity 10. Cut off the terminal and terminate with TERMBF 1/4 16-12AWG NIN (P/N: 001846).
6. To install the AUTO NTRL RLY begin by installing the BASE-RELAY SOCKET (P/N: 001325) on the breaker
panel as shown in Figure 3. Mount the base using SCREW MACHINE NO 10 PN HD (P/N: 14S00006) and
WASHER FLAT SS 10 (P/N: 50W00000). Then install the RELAY 24V SPDT (P/N: 106614) on to the base.

Figure 3: Relay Installation
7. Install “F2TR”, BREAKER 2A ETA MAN (P/N: 218992) on 24VBATRR as shown in Figure 4.
8. Gain access to supplied HRNS-JUMPER REAR PANEL (P/N: 726572). Locate AUTO NTRL RLY, terminal
strip GNDBRR, breaker F2TR and connector NODE 15-J2. Refer to the wiring diagram shown in Figure 4 and
the schematic in Figure 5.
9. Insert the appropriate end of wire 99TR87AB into relay AUTO NTRL RLY-86 and the other end into connector
Node 15-J2 cavity 10.
10. Insert the appropriate end of wire 99TR87AC to breaker F2TR and insert the other end into connector Node
15-J2 cavity 9.
11. Insert the appropriate end of wire 99TR87AA into relay AUTO NTRL RLY-85 and connect other end to
terminal strip GNDBRR. Remove all dielectric grease and torque the connector to 9 FT-LBS (DRY). Reapply
dielectric grease to the connection.
12. Insert the wire 99TR87G into relay AUTO NTRL RLY-30.

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13. Insert the wire 99TR87B into relay AUTO NTRL RLY-87.

Figure 4: Rear Panel Wiring Diagram

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Figure 5: AUTO NTRL RLY schematic
14. Route all wires neatly alongside the existing harness in the real panel. Use tyraps (P/N: 5958112) to secure
the harness.
15. Locate the appropriate decal from the table below and install it on the rear panel cover using ADHESIVESPRAY 77 (P/N: 170962).

SR

Decal Part Number

2079

655496

2105

655496

2119

655496

2174

684722

2175

696003

2176

695288

2142

695288

2074

655490

2075

655502

16. Remove all tools and debris and bring the bus back into operating condition.

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LABOUR ESTIMATE
Operation
1

Add relay for Auto Neutral signal to TCM

Men

Hours

1

1

Labor Time
M X HR
1

PARTS REQUIRED
Item

Part Number

1

726572

HRNS-JUMPER REAR PANEL

Qty.
per
Coach
1

2

001846

TERM-BF 1/4 16-12AWG NIN

2

EA

3

001325

BASE-RELAY SOCKET

1

EA

4

106614

RELAY 24V SPDT

1

EA

5

14S00006

SCREW MACHINE NO 10 PN HD

1

EA

6

50W00000

WASHER FLAT SS 10

1

EA

7

5958112

TYRAP-7.0 BLACK

8

EA

8

170962

ADHESIVE-SPRAY 77

0.05

EA

9

218992

BREAKER 2A ETA MAN

1

EA

10

655496

DECAL-REAR PANEL

1

EA

For 2079/2105/2119

11

684722

DECAL-REAR PANEL

1

EA

For 2174

12

696003

DECAL-REAR PANEL

1

EA

For 2175

13

695288

DECAL-REAR PANEL

1

EA

For 2142/2176

14

655490

DECAL-REAR PANEL

1

EA

For 2074

15

655502

DECAL-REAR PANEL

1

EA

For 2075

Description

Units

Notes

EA

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