Tennant 1550,550-E,550 Instruction Bulletin

INSTRUCTION BULLETIN

No. 340739

Machine: 550/1550

Published: 06--2004

Rev. 00

NOTE: DO NOT DISCARD the Parts List from the Instruction Bulletin. Place the

Parts List in the appropriate place in the machine manual for future reference. Retaining the Parts List will make it easier to reorder individual parts and will save the cost of ordering an entire kit.

NOTE:Numbers in parenthesis ( ) are reference numbers for parts listed in Bill of Materials.

Installation instructions for kit number 9000887

SYNOPSIS / PROBLEM:

This kit contains parts needed to install/replace the ECU controller on 550/1550 LPG model scrubbers (serial numbers 006409--) with Zeems fuel systems.

Please follow step-by-step instructions.

SPECIAL TOOLS / CONSIDERATIONS: NONE

(Estimated time to complete: 1 hour)

PREPARATION:

1. Park the machine on a clean level surface.

FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, and remove key.

2. Open and lock engine compartment doors.

3. Disconnect the battery cables from the machine.

WARNING: Always disconnect the battery cables from the machine before working on electrical components.

IB 340739 (06-2004) 1

2 heat shrink solder joint

FIG. 1

FIG. 2

FIG. 3

FIG. 4

Brown wire from pin #3

Brown wire from pin #2

ECU Wiring Procedure:

NOTE: Refer to schematic on the following page for additional wiring information.

1. Disconnect the white connector from the ECU.

2. Release, but do not remove, the red locking cover from the white connector to dislodge the connection. Refer to Fig. 1.

3. Insert and twist the white wire (2) into pin #3 .

Ensure the white wire (2) is locked into place.

Refer to Fig. 2.

4. Strip between 1/2” and 5/8” of insulation from the end of the white wire (2) just inserted into pin #3 .

5. Measure and mark a point 1 1/2” from the connector end of the brown wire in pin #2 .

6. Strip 3/4” of insulation from the marked area of the brown wire in pin #2 .

7. Pull and twist the brown wire in pin #2 from the connector.

8. Slide heat shrink onto the brown wire from pin #2 .

9. Solder the loose end of the white wire (2) in pin

#3 to the brown wire in pin #2 . Refer to Fig. 3.

Solder wires as shown in Fig. 4 so heat shrink can be positioned over the solder joint for the best possible seal.

10. Push the brown wire back into pin #2 . Ensure brown wire is locked into place .

11. Heat shrink the heat shrink over the solder joint and the exposed portions of both brown wires.

Refer to Fig. 4.

12. Ensure other wires are secure in the connector.

13. Lock the red locking cover back into place.

14. Install red cover back into place.

15. Ensure the red seal is properly positioned inside the white connector.

16. Plug the white connector into the ECU.

NOTE: The ECU reprograms itself when the engine is first started after rewiring. Allow approximately

1--2 minutes for the engine to settle down. The machine is then ready for use.

IB 340739 (06-2004)

NOTE: Refer to the ECU Wiring Procedure for steps required to rewire the modified controller (ECU). Rewiring must be completed according to these instructions.

Fuel System

Schematic

IB 340739 (06-2004) 3

NOTE: Refer to ECU Wiring Procedure for steps required to rewire the modified controller (ECU). Rewiring must be completed according to the

ECU Wiring instructions. Remove the old controller and install the new controller (1) as shown in the diagram below.

1

4 o

Y

Y

Ref.

Tennant

Part No.

9000887

1 1017592

2 1017650

Bill of Materials for Kit, Replmt, Controller (9000887)

Description

) Kit, Replmt, Controller

Controlbox, Fuel, LPG [3.0L GM 550/1550]

Harness, Jumper, Controller, [550/1550]

TENNANT COMPANY

P. O. Box 1452

Minneapolis, MN 55440-1452

Qty.

1

1

IB 340739 (06-2004)