1998 Mercury Sable replacing oil shaft upper CAM

TAHOE1987

MEMBER
1998 MERCURY SABLE

Engine Mechanical problem
1998 Mercury Sable 6 cyl Front Wheel Drive Automatic

I'm not getting oil to heads and valves, change oil pump; I hear there is a gear off cam than turns shaft to oil pump may be worn out; what needs to be done to get at that; to replace; do I need to sycronize tdc no1afterwards?

3 Replies

MERLIN2021

MECHANIC
17,250 POSTS

Engine Lubrication System The engine lubrication system is of the force-feed type. � � � Oil is supplied under full pressure to the crankshaft (6303) and connecting rod bearings (6211), hydraulic valve tappets (6500) and camshaft bearings (6261). � � � From the valve tappets, a controlled volume of oil is supplied to the rocker arms (6564) through the hollow push rods (6565). � � � All other moving parts are lubricated by gravity flow or splash. Oil Pump The rotary spur-type oil pump (6600), which develops the oil pressure, is bolted to the No. 4 crankshaft main bearing cap. � � � The spur-driven gear is rotated by the camshaft position sensor housing shaft through an oil pump intermediate shaft (6A618). � � � A full-flow oil bypass filter (6714) is externally mounted on the cylinder block (6010) and normally all engine oil passes through the oil bypass filter. � � � However, if the oil filter element should become restricted, a spring-loaded bypass valve will open and allow an uninterrupted flow of oil to the engine's moving parts. � � � Flexible fuel vehicles are equipped with a unique oil pump with a stainless steel oil pick-up screen. Oil Pan The oil pan (6675) is a stamped steel part that bolts to the bottom of the cylinder block. � � � The oil pan acts as a reservoir holding lubrication that is pumped through the engine by the oil pump after start up. Page 1 of 1 1998 Taurus/Sable Camshaft The camshaft (6250) is installed in the cylinder block (6010) and is supported on four camshaft bearings (6261). � � � Thrust loads and end play are limited by a camshaft thrust plate (6269) installed on the front of the camshaft. � � � The camshaft position sensor (CMP sensor) drive gear is located at the rear of the camshaft. � � � The CMP sensor drive gear is part of the camshaft.
Did you test the oil pressure? The rod on the oil pump goes up to the cam sensor, the sensor is driven by a gear thats part of the cam. More common for this rod to strip or break if the pump locks up. How does the engine run?