Danfoss AX427479388119 Neutral Lockout Switch Kits Installation Guide

June 3, 2024
Danfoss

Danfoss AX427479388119 Neutral Lockout Switch Kits

Neutral Lockout Switch Kits

990661-000

Screw Terminal N/C Neutral Lockout Switch Kit

| 990721-000

Screw Terminal N/O, Neutral Lockout Switch Kit

| 990720-000**

Delphi Packard, N/C, Neutral Lockout Switch Kit

| 990754-000**

Delphi Packard, N/O,

Neutral Lockout Switch Kit

---|---|---|---
109791-001 (1)

N/C Neutral Lockout Switch (If purchased separately order 990757-000 Kit )

| 110083-000 (1)

N/O Neutral Lockout Switch (If purchased separately order 990758-000 Kit )

| 109089-000 (1)

N/C Neutral Lockout Switch (If purchased separately order 990759-000 Kit )

| 110536-000 (1)

N/O Neutral Lockout Switch (If purchased separately order 990760-000 Kit )

102149-019* (2)

Socket Set Screw

| 102149-019* (2)

Socket Set Screw

| 102149-019* (2)

Socket Set Screw

| 102149-019* (2)

Socket Set Screw

107977-000* (1)

Adaptor

| 107977-000* (1)

Adaptor

| 107977-000* (1)

Adaptor

| 107977-000* (1)

Adaptor

˜ When ordering switch kits with adaptors the threads of the switch will have a high temperature water resistant grease applied to the threads at the factory. Apply the grease at installation if ordering just a switch.

  • Items may be purchased without Switch as Part of Kit 990650-000 see below

**Note: Mating connector and terminals are not provided they are manufactured by Delphi Packard:

  • Connector P/N 1201 5792
  • Terminals P/N 1208 9040
  • Cable Seal P/N 1201 5323

CAUTION serious injury or death. Make sure the battery is discon-nected and the engine is not running. Make sure the parking brake is engaged and other peripheral equipment is disengaged.
NOTE: Hydraulic ˝uid can leak from the servo control valve assembly when remov-ing the neutral lockout switch and adapter assembly. First shut o˛ the hydraulic reservoir to the pump and drain the hydraulic ˝uid from the pump case to a level below the servo control valve assembly.

**Disassembly

**

Neutral Lockout Switch

  1. Disconnect wiring from the lockout switch.
  2. Loosen hex set screws in adapter and remove neutral lockout switch from adapter.
  3. Remove neutral lockout adapter from servo control valve assembly.Danfoss-AX427479388119-Neutral-Lockout-Switch-Kits-fig 1

Neutral Lockout – Switch Identiÿcation

  1. Remove the switch from the adaptor.
  2. Connect a test light with a 12 Vdc power source or a multimeter to the switch terminals. Polarity does not matter. See ÿgure 1-2. If a multimeter is used, set to “ohms” and note that our reference to light “On” is the same as zero ohms and light o˛ is the same as inÿnite ohms.
  3. If the light is o˛ when the ball in the end of the switch is not depressed but comes on when the ball is depressed, then it is a normally open (N/0) switch. Caution: Do not depress the ball beyond a point where it is ˝ush with the housing. Permanent damage to the switch could occur.
  4. If the test light comes on when the ball is not depressed, but goes o˛ when the ball is depressed, it is a normally closed (N/C) switch.

Reassembly Normally Closed

Note: Reassembly may be done with the Servo Control Valve Assembly on or o˛ the main hydrostatic pump. The ÿnal check of the switch must be done on the pump with all the linkage attached and before engine start-up.
Normally Closed (N/C) Neutral Lockout Switch

  1. With the switch removed from the adapter, install the adapter into the control assembly. Torque the adapter to
    60- 72 N·m (44-53 lbf·ft).

  2. With the adaptor installed, proceed and install the neutral lockout switch into the adapter, again refer to ÿgure 1-1.

  3. The adjustment procedures for the switch are as follows;

    • (a). First apply a high temperature water resistant grease to the threads. Screw the switch in slowly, while moving the hydraulic control arm back and forth, until “detent” action is detected in the arm movement. See ÿgure 2-1 . Back out the switch until the “detent” action is very slight. Then position the arm out of the detent position (ÿgure 2 -2 ).
    • (b). Obtain a test light and 12 Vdc power source or use a multimeter. Multimeter use is described under “Switch Identiÿcation”. Attach the leads from the test light to the switch. If the light does not immediately come on, back the switch out until it does.
    • (c). Screw the switch in until the light just goes o˛. Mark this as position “A” with two adjacent marks on the switch adapter. Refer below to ÿgure 2-3. Move the control arm to the detent position and the test light should come back on.
    • (d). Leaving the control arm in the detent position, screw the switch in until the light just goes o˛. Mark this position “B” on the switch adjacent to the original mark on the adapter.
    • (e). Back out the switch one half the distance between “B” and “A”. Refer to ÿgure 2 -3. Torque either hex socket head set screw to 3.2 to 3.8 N·m [28 to 34 lbf·in.] One screw may be inaccessible and does not need to be tightened.
  4. As a ÿnal precaution, test the switch by moving the machine’s hydrostatic control handle to the neutral position
    – the light should be on. Move the control handle slightly out of the neutral position and the light should go o˛.

  5. Remove test light, reattach original wiring to the Neutral Lockout Switch and put servo control valve assembly into operation.Danfoss-AX427479388119-Neutral-Lockout-Switch-Kits-fig 4Danfoss-AX427479388119-Neutral-Lockout-Switch-Kits-fig 5

Reassembly Normally Open

Normally Open (N/O) Neutral Lockout Switch

  1. With the switch removed from the adapter, install the adapter into the control assembly, refer to ÿgure 1-1. Torque the adapter to 60-72 N·m (44-53 lbf·ft).

  2. With the adaptor installed proceed and install the neutral lockout switch into the adapter.

  3. The adjustment procedures for the switch are as follows;

    • (a). First apply a high temperature water resistent grease to the threads. Screw the switch in slowly, while moving the hydraulic control arm back and forth, until “detent” action is detected in the arm movement. See ÿgure 3-1. Back out the switch until the “detent” action is very slight. Then position the arm out of the detent position. See
      ÿgure 3-2.

    • (b). Obtain a test light and 12 Vdc power source or use a multimeter. Multimeter use is described under “Switch Identiÿcation”. Attach the leads from the test light to the switch. If the light comes on, back the switch out until it goes out.

    • (c). Screw the switch in until the light just comes on. Mark this as position “A” with two adjacent marks on the switch and adapter. Refer to ÿgure 3-3 below. Move the control arm to the detent position and the test light should go back o˛.

    • (d). Leaving the control arm in the detent position, screw the switch in until the light just comes on. Mark this position “B” on the switch adjacent to the original mark on the adapter.

    • (e). Back out the switch one half the distance between “B” and “A”. Refer to ÿgure 3-3. Torque either hex socket head set screws to 3.2 to 3.8 N·m [28 to 34 lbf·in.] One screw may be inaccessible and does not need to be tightened.

  4. As a ÿnal precaution, test the switch by moving the machine’s hydrostatic control handle to the neutral position – the light should be o˛. Move the control handle slightly out of the neutral position and the light should go on.

  5. Remove test light, reattach original wiring to the Neutral Lockout Switch and put servo control valve assembly into operation.Danfoss-AX427479388119-Neutral-Lockout-Switch-Kits-fig 6Danfoss-AX427479388119-Neutral-Lockout-Switch-Kits-fig 7

Neutral Lockout – Adaptor Identiÿcation

  1. Please note that Eaton has manufactured two sizes of Neutral Lockout Adaptors. Check to be sure which size you are working with.
  2. The “old style” adaptor accepts a 3/4″ threaded switch, and the new style accepts a 9/16″ threaded switch. See ÿgure 4- 1.
  3. When ordering a replacement switch kit the appropriate adaptor is included.
    Note: New switches are 9/16″ threads and will not mate with older style adaptors.

Products we offer:

  • Cartridge valves
  • DCV directional control valves
  • Electric converters
  • Electric machines
  • Electric motors
  • Gear motors
  • Gear pumps
  • Hydraulic integrated circuits (HICs)
  • hydrostatic motors
  • Hydrostatic pumps
  • Orbital motors
  • PLUS+1® controllers
  • PLUS+1® displays
  • PLUS+1® joysticks and pedals
  • PLUS+1® operator interfaces
  • PLUS+1® sensors
  • PLUS+1® software
  • PLUS+1® software services, support and training
  • Position controls and sensors
  • PVG proportional valves
  • Steering components and systems
  • Telematics

Danfoss Power Solutions is a global manufacturer and supplier of high- quality hydraulic and electric components. We specialize in providing state- of-the-art technology and solutions that excel in the harsh operating conditions of the mobile o˛-highway market as well as the marine sector. Building on our extensive applications expertise, we work closely with you to ensure exceptional performance for a broad range of applications. We help you and other customers around the world speed up system development, reduce costs and bring vehicles and vessels to market faster.
Danfoss Power Solutions – your strongest partner in mobile hydraulics and mobile
electriÿcation.
Go to www.danfoss.com for further product information.
We o˛er you expert worldwide support for ensuring the best possible solutions for outstanding performance. And with an extensive network of Global Service Partners, we also provide you with comprehensive global service for all of our components.

Hydro-Gear
www.hydro-gear.com
Daikin-Sauer-Danfoss
www.daikin-sauer-danfoss.com

Danfoss
Power Solutions (US) Company 2800 East 13th Street
Ames, IA 50010, USA
Phone: +1 515 239 6000

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequent changes being necessary in speciÿcations already agreed.
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