OPERATION 16.4.3 ENGINE ( ): Always contact your distributor when dealing with these items. In cases of abnormalities or causes which are not listed below, please contact your distributor for repairs. 2-92 WA320-3MC Problem Main causes Remedy Engine oil pressure caution pilot lamp lights up Engine oil pan oil level is low (sucking in air) Clogged air filter cartridge Defective tightening of oil pipe joint, oil leakage from damage parts Defective eng. oil pressure sensor Add oil to specified level, see “12.1.2 CHECK BEFORE STARTING” on page 2-42. Replace cartridge, see “24.6, 24.6 EVERY 250 HOURS SERVICE” on page 3, 3-48.
( Check, repair) ( Replace sensor) Steam is emitted from top part of radiator (pressure valve) Water temperature gauge is in red range Coolant temperature monitor lights up Cooling water level low, water leakage Loosen fan belt Dirt or scale accumulated in cooling system Clogged radiator fin or damaged fin Defective thermostat Loose radiator filler cap (high altitude operation) Defective water level sensor Add cooling water, repair, see “12.1.2 CHECK BEFORE STARTING” on page 2-42. Adjust fan belt tension, see “24.6 EVERY 250 HOURS SERVICE” on page 3-48. Change cooling water, clean inside of cooling system, see “24.2 WHEN REQUIRED” on page 3-31.
Clean or repair, see “24.2 WHEN REQUIRED” on page 3-31. ( Replace thermostat) Tighten cap or replace packing ( Replace sensor) Water temperature gauge is in the white range on left Defective thermostat Defective monitor ( Replace thermostat) ( Replace) Engine does not start when starting motor is turned Lack of fuel Air in fuel system Defective fuel injection pump or nozzle Starting motor cranks sluggishly Preheating pilot lamp does light up Defective compression Defective valve clearance Add fuel, see “12.1.2 CHECK BEFORE STARTING” on page 2-42. Repair place where air is sucked in, see “24.7 EVERY 500 HOURS SERVICE” on page 3-54.
( Replace pump or nozzle) See 18-2 OUTLINE OF ELECTRICAL SYSTEM on page 3-8. ( Adjust valve clearance)