Yanmar 4TNV84T-Z Manual Download Page 2

Installation Instructions

NOTE:

1.

NOTE:

2.

3.

4.

WARNING:

NOTE:

Enabling Engine Speed Switch #1 - 

Enabling Engine Speed Switch #2 - 

1-
2-
3-

4-

Table 1:

PAGE 2 OF 6

M8 x 1.25

1.5 ~ 2.9

KP4 - PANEL KIT 

INS-KP4-0012

Fasten Control Panel (1) to the Mounting Bracket (7) using Isolators (3) and Nuts.  

M6 x 1.0

1.0~1.2

7~9

9.8~11.8

Install the ECU so that the connector faces downward.  Failure to do so may trap water in the connector, resulting in 
corrosion of connector pins.

Remote Mounted ECU Applications:

A relay mounting bracket has been provided with the kit. This bracket will allow the relays to be securely fastened to the 
engine to reduce vibration and water damage.

Refer to harness drawing for additional design requirements for consideration of application.  A troubleshooting guide is available 

through Yanmar's Distributor Website or by contacting Yanmar America's Service Department.

Install the ECU in a location that is not subject to steam or high-pressure water for cleaning

10.6 ~ 20.9

14.4 ~ 28.3

57.8 ~ 72.3

78.4 ~ 98.0

Diameter x Pitch

Kgf-m

M12 x 1.75

8.0 ~ 10.0

Be sure battery cables are connected correctly.  Disconnecting either the positive or negative battery cable while the 
equipment is operating will cause premature failure of electronic components.  Also, never weld on equipment with the 
ECU connected to the wire harness.

Hand tighten all bolts and nuts until assembly is completed, then torque according to specifications in Table 1.  The numbers in () 
represent the item numbers.

Constant Speed Applications:

Yanmar America Part Department Phone # : 1-800-966-7685

Please see the next page for detailed installation instructions.

Only the Main and Rack Actuator Relays are required for the function of the Yanmar ECO engines.  These relays are 
supplied with the distributor standard specification engines in the loose parts box.  The optional Sub-Relay connector (CR5) 
is intended to activate 4 optional features such as engine stop switch, droop-switch, ECO lamp, and engine speed monitor.  
All of these optional features are located in the accessory connector (J18) in the wire harness on pins 3,4,5, and 6.  In the 
event that these features need to be activated one additional relay P/N: 198461-52950 must be ordered from the Yanmar 
America Part Department.  

Locate the 12 pin Deutsch accessory connector and jumper the pin #2 (ground) with pin #12 engine speed switch #2.  Use 
the female connector that comes attached to each wire harness to make the connections.  This will enable the Engine 
Speed Switch #2 for constant speed.

Ensure no water is trapped inside the connector when plugging the connector.  Water inside the connector may 
corrode connector pins, resulting in malfunctioning of the ECU.

YANMAR CO., LTD. 

YANMAR AMERICA CORP.

In the event that the 60" wire harness extension needs to be extended please follow the manufacturer's assembly and 

wiring procedures.  Please visit www.deutschip.com and click on the Connector Repair or Helpful Hints link to download a 

more detailed procedure on how to properly assemble a connector.  As always never use scotch locks or butt connectors to 

extend the wire harness.  All extended wires must be soldered and sealed.

Comply with torque standards in the table to avoid unexpected damage during installation or in the future.

Make sure isolators are not twisted during installation to avoid premature failure of components.

Assemble Control Panel (1) and Mounting Bracket (7) assembly to injection pump side front engine leg using M8 x 25 bolts 
(8) and M8 Flange Nuts (9).

The use of the KECMB1 kit is recommended for securing the ECU to the engine for proper harness routing and vibration 
resistance.

Locate the 12 pin Deutsch accessory connector and jumper the pin #2 (ground) with pin #11 engine speed switch #1.  Use 
the female connector that comes attached to each wire harness to make the connections.  This will enable the Engine 
Speed Switch #1 for constant speed.

M5x0.8

0.4 ~ 0.7

3 ~ 5

4 ~ 6.7

For applications that remotely mount the ECU within the wire harnesses reach please use the following ECU mounting 
guidelines:

Foot-lbf

N-m

Install the ECU in a location that is well ventilated and not subject to direct sunlight.

Summary of Contents for 4TNV84T-Z

Page 1: ...CO Quantity Part No Description 119749 91050 Ignition Key Engine Control Panel 119749 91040 26106 080252 INS KP4 0012 Sub relay is optional and not included with the engine Bolt M8 x 1 25 25 Flanged hex head 26366 080002 Nut M8 x 1 25 Flanged hex head Remarks KP4 PANEL KIT INS KP4 0012 Installation Document 119749 91060 Relay 119749 91001 129989 09020 Alternator Sub Harness J59 Main Relay J60 Actu...

Page 2: ...d monitor All of these optional features are located in the accessory connector J18 in the wire harness on pins 3 4 5 and 6 In the event that these features need to be activated one additional relay P N 198461 52950 must be ordered from the Yanmar America Part Department Locate the 12 pin Deutsch accessory connector and jumper the pin 2 ground with pin 12 engine speed switch 2 Use the female conne...

Page 3: ...re which bolt to mount the harness to the housing YANMAR CO LTD YANMAR AMERICA CORP 4TNV98 T HellermanTyton mount and large wire tie to hold down the large section of loom to the flywheel housing Make sure mount and loom have the proper orientation to allow the loom to rest close to the flywheel barrel 4TNV84T KP4 PANEL KIT INS KP4 0012 Secure the ECU such that the connector faces down and there i...

Page 4: ...ess are secured with a wire tire close to the thermostat Use P Clamp on lower bolt hole to secure harness and wire ties to bundle loose loom Refer to harness drawing for additional design requirements for consideration of application A troubleshooting guide is available through Yanmar s Distributor Website or by contacting Yanmar America s Service Department Using the 15mm P Clamp secure the fuel ...

Page 5: ... 5 6 7 8 9 10 11 12 a Panel J5 Preheat Lamp B Battery 30 c Sensor Rtn D Starter 50 E Ground f CAN Shield G ECU Power h Warning Lamp j Accessory 15 k Tachometer l Throttle m Throttle Power n Plug p Oil Pres Sndr r Charge Lamp s Plug t Plug u CAN Low v Can High w Plug x Plug A R1 B C 120O Ring 5 16 J55 Starter B Ring 10 J68 Starter Sol Ring 1 4 J20 Air Heater Ring 5 16 J2 Starter B 1 NRPM J9 Rev Sen...

Page 6: ...t 10 Disconnect the E ECU and battery before welding on the equipment 11 Do not wash E ECU and harness with high pressure systems 12 Replacement for CR3 and CR4 is LOFA PN 341 1270 50 CIT A3M1ASQ12VDC2D or equivalent 13 Submit all support and warranty claims to Yanmar J20 Air Heater Oil Press J23 Sw J27 Sndr J9 Rev Sensor J8 Rack Actuator J10 CSD J11 EGR Valve J12 Coolant Temp Sensor P2 J8 Accesso...

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