Operation CHARM: Car repair manuals for everyone.
Home >> Ford >> 1990 >> E 250 Van V8-351 5.8L >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Cylinder Head Assembly >> Valve Cover >> Service and Repair

Valve Cover: Service and Repair


Valve Rocker Arm Cover Removal

1. Remove air cleaner and intake duct assembly, including the closed crankcase ventilation hoses and tubes, remove coil and solenoid brackets. For removal of RH rocker cover, remove lifting eye and Thermactor tube.
2. Remove oil filler pipe host from LH rocker arm cover, if so equipped.






3. Disconnect the spark plug wires from the spark plugs by grasping, twisting and pulling the moulded cap using Spark Plug Wire Remover T74P-6666-A or equivalent. Remove wires and bracket assemblies from the rocker arm cover attaching stud and position out of the way.
4. Remove vacuum harness and electrical connectors to the vacuum solenoids mounted on the rocker arm covers, if so equipped, and position out of the way
5. Disconnect evaporative system hoses from the canister or the chassis, if so equipped, and position out of the way.
6. Remove Thermactor air supply hose, if so equipped.
7. Remove rocker arm cover bolts and remove rocker arm covers.






8. Remove the valve rocker arm bolt,. fulcrum seat and rocker arm.

Installation

1. Apply Multi-Purpose Grease DOAZ-19584-AA (ESR-M1C159-A) or equivalent to the top of the valve stem, the fulcrum seat and socket.
2. Install the fulcrum guide, valve rocker arm, fulcrum seat and bolt. Tighten to 25-32 N.m (18-25 ft-lb)
3. Clean and inspect gasket surfaces. Inspect the gasket sealing surface from damage and distortion due to overtightening of the bolts. Repair and straighten as required. Place the new gaskets in the covers, making sure that the tabs of the gasket engage the notches provided in the cover.






4. Position the cover(s) on the cylinder head(s). Install the cover bolts and tighten to 13.6-17.6 N.m (10-13 ft-lb). Wait two minutes, then tighten bolts again to same specification.
5. Retighten all intake manifold bolts to 32-33 N.m (23-25 ft-lb) using sequence shown. Install vacuum harness bracket and attaching nut. Tighten to 17-24 N.m (12-18 ft-lb).
6. Reconnect vacuum harnesses and electrical connectors to the vacuum solenoids on the arm covers, if so equipped.
7. Connect spark plug wires and bracket assembly to attaching stud on rocker arm cover and connect wires at spark plugs.
8. Connect thermactor air supply hose, if so equipped.
9. Connect oil filler pipe hose to LH rocker arm, if so equipped.
10. Install the closed crankcase ventilation hoses or tubes.
pro multis · About Operation CHARM