Section 03-01B: Engine, 5.0L and 5.8L MFI
1996 F-150, F-250, F-350 and Bronco Vehicles Equipped with 5.0L or 5.8L MFI Engines Workshop Manual
IN-VEHICLE SERVICE

Valve Tappet, Hydraulic

 

Before replacing a hydraulic valve tappet (6500) for noisy operation, verify the noise is not caused by improperly adjusted valve-to-rocker arm clearance or by worn rocker arms (6564) or push rods (6565).

Removal

  1. Remove the intake manifold (9424) and related parts.

  1. Disconnect secondary air injection manifold tube (9B449) at the secondary air injection pump (AIR pump) (9A486) and place it out of the way.

  1. Remove the valve cover (6582), then loosen the valve rocker arm fulcrum bolts and rotate the rocker arms to the side.

  1. Remove the push rods in sequence so that they can be installed in their original positions.

  1. Remove the valve tappets and place them in a rack so that they can be installed in their original bores.

    If necessary to disassemble a valve tappet, refer to Valve Tappet, Hydraulic in the Disassembly and Assembly portion of this section.

Installation

  1. NOTE: Valve tappets and bores are to be lubricated with engine oil of the quality recommended in the Owner Guide before installation.

    Clean the external surfaces and install the valve tappets in the bores from which they were removed using suitable hydraulic tappet puller. If a new valve tappet is being installed, check the new valve tappet for a free fit in the bore in which it is to be installed. Lubricate the valve tappet and bore with recommended quality engine oil before inserting the valve tappet.

  1. Lubricate the ends of the push rods with Multi-Purpose Grease D0AZ-19584-AA or equivalent meeting Ford specifications ESB-M1C93-B and ESR-M1C159-A and install the push rods in their original positions. Apply Multi-Purpose Grease D0AZ-19584-AA or equivalent meeting Ford specifications ESB-M1C93-B and ESR-M1C159-A to the valve stem tip.

  1. Lubricate the rocker arms and rocker arm seats (6A528) with Multi-Purpose Grease D0AZ-19584-AA or equivalent meeting Ford specifications ESB-M1C93-B and ESR-M1C159-A and position the rocker arms over the push rod. Tighten rocker arm fulcrum bolts to 24-34 Nm (18-25 lb-ft).

  1. Install the valve covers.

  1. Reconnect secondary air injection manifold tubes.

  1. Install the intake manifold.