John Deere AC-3500GHH Manual De Usuario

18 

 

 

 

 

 

 

John Deere Operator's Manual

SYMPTOM 

 

 

 

PROBABLE CAUSE 

 

 

REMEDY 

Engine will not start.  

 

 

Various engine problems. 

 

Refer to the Engine Manual  

 

 

 

 

 

 

 

 

 

 

 

accompanying your unit. 

 

 

 

 

 

 

Unit components are frozen. 

 

Allow to thaw.  If any part of the unit  

 

 

 

 

 

 

 

 

 

 

becomes frozen;  excessive  

 

 

 

 

 

 

 

 

 

 

 

pressure may build up in the unit  

 

 

 

 

 

 

 

 

 

 

which could cause the unit to burst  

 

 

 

 

 

 

 

 

 

 

resulting in possible serious injury to  

 

 

 

 

 

 

 

 

 

 

the operator or bystanders. 

No discharge at nozzle when   

Inadequate water supply. 

 

Ensure hose is 3/4" diameter and 

trigger mechanism is squeezed.  

 

 

 

 

 

incoming water supply is turned on. 

 

 

 

 

 

 

Low or fluctuating pressure. 

 

Kink in water inlet hose.  

 

Remove kink. 

  

 

 

 

 

 

Kink in high pressure discharge hose.  Replace kinked high pressure hose. 

 

 

 

 

 

 

Water inlet screen obstructed.   

Remove screen, clean or replace. 

 

 

 

 

 

 

 

Pump sucking air.  (Prime eliminated)  Tighten all water intake connections 

 

 

 

 

 

 

 

 

 

 

Eliminate leaks in intake line. 

 

 

 

 

 

 

Adjustable Grip on Dual Lance   

Turn grip 

counterclockwise to   

 

  

 

 

 

is not in high pressure mode.   

to high pressure. 

 

 

 

 

 

 

 

 

 

 

 

Obstructed or worn spray nozzle. 

Remove, clean or replace. 

 

 

 

 

 

 

Damaged or obstructed valve assy. 

Remove, inspect, clean or replace. 

 

 

 

 

 

on pump. 

 

 

 

 

 

 

Pump packings worn.   

 

Replace packings. 

 

 

 

 

 

 

Unloader/Bypass valve not operating 

Repair or replace. 

 

 

 

 

 

correctly.

Water is leaking from Heat DumpValve.  Water temperature is too high.   

Do not allow unit to operate in    

 

 

 

 

 

 

 

 

 

 

bypass mode (with the trigger gun  

 

 

 

 

 

 

 

 

 

 

closed) for more than three minutes.   

 

 

 

 

 

 

Defective valve.  

 

 

Replace. 

Oil appears milky or foamy. 

 

Water in oil. 

 

 

 

Change pump oil.  Fill to proper   

 

 

 

 

 

 

 

 

 

 

level. 

Oil leaking from unit. 

 

 

Worn seals or o-rings.   

 

Contact Service. 

Detergent will not siphon into    

Detergent strainer is not completely 

Check, submerge if necessary. 

Low Pressure Detergent mode.   

submerged in detergent solution. 

 

 

 

 

 

 

Detergent strainer obstructed.   

Inspect, clean or replace.  

 

 

 

 

 

 

Detergent hose cut, obstructed or 

Inspect, clean or replace. 

 

 

 

 

 

kinked. 

 

 

 

 

 

 

Detergent adjusting knob turned to  

Open adjusting knob.  Refer to  

 

 

 

 

 

closed position.  

 

 

"Cleaning with Detergents"  pg. 17. 

 

 

 

 

 

 

Adjustable grip on dual lance is   

Turn grip 

clockwise to move to low  

 

 

 

 

 

not in low pressure mode. 

 

pressure. 

 

 

 

 

 

 

Nozzle assembly is plugged. 

 

Clean or replace. 

 

 

 

 

 

 

Too many high pressure hose   

Use one extension maximum. 

 

 

 

 

 

extensions attached to the water outlet.   

 

 

 

 

 

 

 

 

 

 

Ball & Spring in Venturi stuck.   

Remove, clean or replace. 

Water flows back into detergent   

Ball & Spring in Venturi reversed, 

Remove, clean or replace. 

container. 

 

 

 

missing or corroded. 

Water flows from the nozzle when the  Trigger gun is malfunctioning.   

Repair or replace. 

trigger gun is locked in the "OFF"  

 

 

 

 

 

 

position.