Dodge Ram 50, D-50 Pick-up Truck, Raider, Plymouth Arrow Repair Manual 1979-1993

HYDRAULIC LASH ADJUSTERS | CHECK, REMOVAL AND INSTALLATION

CHECK (Refer to illustration 6.1)

1. Check the hydraulic lash adjusters for freeplay by inserting a small wire through the air bleed hole in the rocker arm while lightly pushing the check ball down (see illustration).



2. While lightly holding the check ball down, move the rocker arm up and down to check for freeplay. There should be a small amount of movement. If there is no freeplay, replace the adjuster with a new unit.

REMOVAL (Refer to illustration 6.4)

3. Remove the valve cover(s) (see Section 4) and the rocker arm shaft components (see Section 5).



4. Pull the hydraulic lash adjuster(s) out of the rocker arm(s) (see illustration). Note: Be sure to label each rocker arm and adjuster and place them in a partitioned box or something suitable to keep them from getting mixed with each other.



5. Installation is the reverse of removal.

INTAKE MANIFOLD | REMOVAL AND INSTALLATION

REMOVAL (Refer to illustration 7.13)

1. Relieve the fuel system pressure (see Chapter 4).



2. Disconnect the cable from the negative terminal of the battery.



3. Drain the cooling system (don't forget to drain the cylinder block) (see Chapter 1).



4. Remove the air cleaner-to-throttle body inlet hose (see Chapter 4).



5. Remove the spark plug wires and distributor cap. Be sure to mark the spark plug wires for proper reinstallation (see Chapter 1).



6. Remove the throttle cable and transaxle kickdown linkage (see Chapter 4 and 7B).



7. Remove the Idle Speed Control (ISC) motor and throttle position sensor (TPS) electrical connectors from the throttle body.



8. Remove the EGR tube flange from the air intake plenum.



9. Label and detach any vacuum liens from the throttle body.



10. Detach the fuel lines from the fuel rail (see Chapter 4).



11. Remove the throttle body, air intake plenum and the fuel injectors (see Chapter 4).



12. Label and remove any remaining hoses, wires or cables attached to the intake manifold or its components.



13. Loosen the manifold mounting bolts/nuts in 1/4-turn increments until they can be removed by hand. Loosen the outer bolts first, then the inner bolts (see illustration).



14. The manifold will probably be stuck to the cylinder heads and force may be required to break the gasket seal. Caution: Don't pry between the manifold and the heads or damage to the gasket sealing surfaces may occur, leading to vacuum leaks.

• Introduction: Vehicle identification numbers; Buying parts; Maintenance techniques, and more.
• Tune-up and routine maintenance
• Engine and overhaul procedures
• Cooling, heating and air-conditioning systems
• Fuel and exhaust systems
• Engine electrical systems
• Emissions control systems
• Transmission
• Brakes
• Suspension and steering systems
• Body
• Chassis electrical system
• Wiring diagrams