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SNOW PLOW WILL NOT RAISE

Does the Motor

Operate?

Is there power

     going to

   the motor?

 Are all electrical

connections clean

    and tight?

Is Battery Charged?

Charge Battery -

Clean and tighten

   all electrical

   Connections.

   Remove motor.

Does motor run when

 12 volts is applied?

   Inspect Motor -

Armature, Brushes

Repair or Replace

Motor as necessary 

 Is there power

  going to the 

motor solenoid,

at White Wire?

Is there power

  leaving the 

     switch?

 Check switch

 for Continuity

 Check Wires at

Molded connector.

Can the pump

 shaft turn by

      hand?

Replace pump.

Replace the

    Motor 

  Solenoid.

Replace the

   Wiring

  Harness.

Is the Fuse

    OK?

 Is Ground Cable 

 attached to the

   Negative (-)

Battery Terminal?

Replace the

Touch

Pad

Does the snow plow

   angle to the left

  instead of raising?

Does the snow plow

    angle when the 

      Angle Switch 

       is activated?

Is there pressure

 (or flow) at the

   Filter port?

Is the "A" Valve

   stuck in the 

open position?

Clean or Replace

      "A" Valve.

        -Retest - 

 Does snow plow

         raise?

Disassemble unit -

  Inspect O-rings,

  Cylinder,Piston 

     assembly. 

Look for blockage 

in Sump Casting 

       passages.

Can pump relief 

pressure be adjusted 

to 2000 P.S.I.

 Are the 

  Filters

Clogged?

    Clean 

       or

   Replace 

    Filters.

Is the motor turning

the proper direction?

Check Brushes for 

proper installation or

   replace motor.

Replace 

   the

 Pump.

 Is the pump 

shaft turning 

    tightly?

Does the motor 

 armature turn 

     tightly?

Replace 

   the

 Pump.

Repair or Replace

      the motor.

Replace Fuse.

Check for short

 in Harness, 

"B" Coil, Switch 

Connections,

Motor Solenoid,

Electric Motor.

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

YES

Does the "B" Coil

 (Red Wire) have

   magnetism?

Are the "B" Valve

 O-Rings in good

    Condition?

Replace 

O-Rings.

 Clean or

Replace the

 "B" Valve

 and retest.

Replace P.A. Block

with E-46 plate and

retest.  - Does snow

  plow Raise now?

  Replace 

Sump Base.

 Replace

P.A. Block

Is there power to

  the "B" Coil?

   (Red Wire)

   at Harness

  Is there power

leaving the switch

 at the red wire?

Replace 

"B" Coil.

Replace 

the wiring

harness.

Replace

Touch Pad 

  Are wires in

molded connector

making contact

with the switch?

Is the fluid level

 1-1/2" below

   filler hole?

ADD M-1

   Fluid

Summary of Contents for ELECTRO LIFT E-57

Page 1: ...e with motor running 4 Proper rotation for the 4 1 2 motor Fenner Iskra is clockwise by looking at the motor shaft from the bottom of the motor 5 The pump shaft of a good pump can be turned smoothly using two fingers If it can t be turn easily the pump is too tight and must be replaced 6 Pump pressure can be measured at an angle hose note pressure at full angle or in the pressure filter port an ad...

Page 2: ... Piston assembly Look for blockage in Sump Casting passages Can pump relief pressure be adjusted to 2000 P S I Are the Filters Clogged Clean or Replace Filters Is the motor turning the proper direction Check Brushes for proper installation or replace motor Replace the Pump Is the pump shaft turning tightly Does the motor armature turn tightly Replace the Pump Repair or Replace the motor Replace Fu...

Page 3: ...s Cylinder Piston Assembly Does it hold now Sump Base Dissasemble unit Inspect O Rings Cylinder Piston Assembly Does it hold now Replace Sump Base Does A Coil Black Wire have magnetism Replace A Valve Does it now lower Is there power to the A Coil Black Wire at harness Is there power leaving the switch at the Black Wire Is the Touchpad plugged in completely Replace A Coil Check for a clogged filte...

Page 4: ...le trying to angle snow plow Can the snow plow be angled by hand when the P A Rams are disconnected from A Frame Does the snow plow raise instead of angling left NO NO Relieve the interference between the Sector and A Frame NO Clean or replace the C Valve Retest Is the Pilot piston in good condition worn sloppy or missing Clean or replace the B Valve Retest Does pressure remain in angle hose when ...

Page 5: ...Replace O Rings Replace the P A Block YES Does the motor run when angle switch is pushed NO Replace Harness Replace Touch Pad Can the snow plow angle to the Left Does the snow plow raise instead of angling left NO NO Does the C Coil have magnetism Green Wire Is there power to the C Coil Green wire at harness Clean or replace the B Valve Retest NO YES Clean or replace the Crossover Relief Does the ...

Page 6: ...Crossover O Rings in good condition Are the Rams mushy Can you push the moldboard 6 to 8 by hand NO Replace O Rings Replace the P A Block NO Change Pilot Check Ball and Seat does snowplow now hold Inspect Crossover Relief Rebuild or Replace Does snow plow now hold angle Inspect C Valve O rings Change if necessary Does snow plow now angle YES YES YES NO Replace the P A Block YES NO Set Crossover Re...

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