HOSE 4D4183 - Caterpillar

You must read and understand the warnings and instructions contained in the Safety section of this manual before performing any operation or maintenance procedures. Engine Valve Lash/Unit Injector Preload SMCS Code: 1105-535; 1105-025; 1290-535; 1290-025Check/Adjust
Be sure the engine cannot be started while this maintenance is being performed. To prevent possible injury, do not use the starter motor to turn the flywheel.Hot engine components can cause burns. Allow additional time for the engine to cool before checking valve clearance.The electronic engine uses high voltage to the unit fuel injectors. Disconnect injector enable circuit connector to prevent personal injury. Do not come into contact with the injector terminals while the engine is running.
Initial valve lash/unit injector adjustment on new, rebuilt or remanufactured engines is recommended at the first oil change (250 hour) interval due to initial wear and seating of valve train components. All subsequent adjustments are to be performed at 2000 Hour intervals thereafter.The procedures for engine valve lash and unit injector preload adjustment should be performed according to the information in the machine Service Manual. Refer to the Service Manual or your Elphinstone dealer for the complete valve lash/unit injector adjustment procedure. Engine Valve Rotators SMCS Code: 1109-040Check
When inspecting the valve rotators, protective glasses or face shield and protective clothing must be worn, to prevent being burned by hot oil spray.The electronic engine uses high voltage to the unit fuel injectors. Do not come in contact with the injector terminals while the engine is running.
1. Remove the engine valve covers.2. Start the engine and run at low idle. 3. Watch the top surface on each valve rotator. Each valve rotator should turn slightly each time the valve closes.If a valve fails to rotate, contact your Caterpillar or Elphinstone dealer. Engine Mounts & Crankshaft Vibration Damper SMCS Code: 1152-040; 1205-040.Check/Inspect Crankshaft Vibration Damper
Damage to, or failure of the damper will increase torsional vibrations and result in damage to the crankshaft and other engine components. A deteriorating vibration damper will cause excessive gear train noise at variable points in the engine speed range.The vibration damper can have visual wobble (movement to the front and rear when in rotation) on the outer ring. This does not mean a replacement is necessary since some wobble of the outer ring is normal.The vibration damper has marks on the hub and ring that indicate the condition of the damper. These marks can only be viewed if the pulley assembly is removed from the vibration damper. If the pulley is removed for any maintenance/repair purposes, check the alignment marks. If the marks are not in alignment, install a new vibration damper. Refer to the Service Manual for the necessary specifications and replacement procedures.Check/Inspect Engine Mounts
Elphinstone recommends inspecting the engine mounts for deterioration and proper bolt torque. This check will prevent excessive engine vibration caused from deterioration and/or improper or worn mounting.For correct engine mount torque specifications refer to the machine Service Manual or contact your Elphinstone dealer. Hydraulic Tank Oil SMCS Code: 5095-044.Change the