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Checking Idle Speed Preparation 1. Make sure that injection timing is correct. I Air cleaner clogging I Glow system I Engine oil and coolant levels I Valve clearance I Air intake system (Oil filler cap, oil level gauge, etc.) 4. Set shift lever in “Neutral” position. Engage parking brake and lock both front and rear wheels with wheel chocks. 5. Turn off air conditioner, lights and accessories. I Warm up engine until water temperature indicator points to middle of gauge. I Lights, heater fan and all accessories are off. I Attach tachometer’s pick-up to No. 1 fuel injection tube. In order to take accurate reading of engine rpm, remove clamps that secure No. 1 fuel injection tube. Start engine. SMA406B SMA021A Run engine at about 2,000 rpm for Run engine for one minute at idle F Check idle speed. ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- IDLE SPEED: 700+ 50 rpm OK E NG Adjust idle speed by turning idle speed adjust- EMA049 END I Race engine two or three times and allow engine to return to idle speed. If idle speed is not within H H H H H ENGINE MAINTENANCE TD MA-26 |