Locating the timing mark on the rear camshaft of the Toyota 1MZ-FE V6 engine calls for understanding the engine’s arrangement and timing placement treatments. The 1MZ-FE features two cylinder banks, with the rear bank positioned closest to the car’s firewall software. Each camshaft (consumption and exhaust per bank) integrates a timing mark on its sprocket for exact synchronization with the crankshaft during belt setup or engine assembly.
(where is the timing mark on the rear cam shaft of a 1mz-fe toyota engine)
The timing mark for the rear bank camshaft gears is a small notch or groove machined right into the external flange of the sprocket. This mark needs to align with an equivalent referral indication on the rear timing belt cover when the engine is readied to Top Dead Center (TDC) on the compression stroke for cyndrical tube number one. The back timing belt cover includes an elevated tab or embossed line serving as this positioning point, positioned at around the 12 o’clock alignment relative to the camshaft axis.
Accessing the back camshaft sprockets is challenging because of the engine’s transverse mounting and closeness to the firewall software. Elements such as the intake manifold, throttle body, and engine mounts frequently call for removal or rearranging to imagine the sprockets and their timing marks directly. The back bank camshafts are driven by the timing belt transmitted from the crankshaft, with the belt path extending behind the engine block.
Placement treatment mandates verifying the crankshaft timing mark initially, guaranteeing the crankshaft sprocket notch aligns with the zero-degree sign on the oil pump real estate. Subsequently, both rear camshaft sprocket notches must all at once straighten with their respective cover marks. Keep in mind that the intake camshaft sprocket includes Variable Valve Timing-intelligent (VVT-i), yet its static timing mark alignment continues to be identical to the exhaust gear for first belt installment.
(where is the timing mark on the rear cam shaft of a 1mz-fe toyota engine)
Failure to achieve accurate positioning threats valve-to-piston interference, possibly creating devastating engine damages. Post-belt installment, manually turning the crankshaft two complete transformations and re-verifying all timing marks is necessary to validate right synchronization prior to running the engine. Get in touch with the official Toyota repair work handbook for comprehensive access procedures and torque specifications for relevant components.