REMOVAL & INSTALLATION 230 and 250 Engines
See Figure 1
- Drain the oil and remove the oil pan on models through 1972.
- Remove the radiator after draining it.
- Remove the fan, pulley, and belt. Remove any power steering and/or AIR pump drive belts. Remove any braces for the above pumps which will interfere with cover removal and position the pumps out of the way.
- Remove the crankshaft pulley and damper. Use a puller to remove the damper. Do not attempt to pry or hammer the damper off, or it will be damaged.
- Remove the retaining bolts, and remove the cover on 1968-72 models.
- On 1973-76 models, pull the cover forward slightly and cut the oil pan front seal off flush with the block. Remove the cover. On installation, cut the tabs off a new oil pan front seal and install it on the cover.
- On installation, coat the gasket with sealer and use a 1 / 8 in. bead of silicone sealer at the oil pan-to-cylinder block joint. Replace the damper before tightening the cover bolts down, so that the cover seal will align. The damper must be drawn into place. Hammering it will destroy it.
- Install the oil pan if it was removed, and fill the crankcase with oil.
265, 301, 305, 326, 350, 400, 403 and 455 Engines
See Figures 2 through 12
- Drain the cooling system.
- Loosen the alternator adjusting bolts.
- Remove the fan, fan pulley and any accessory drive belts.
- Disconnect the radiator hoses and remove the water pump.
- Remove the fuel pump.
- Remove the harmonic balancer bolt and washer.
- Remove the harmonic balancer. Use a puller, do not attempt to pry or hammer the balancer off.
- Remove the front four oil pan-to-front cover bolts, if equipped.
- Unscrew and remove the front cover mounting bolts and nuts and the cover-to-intake manifold bolt.
- Pull the front cover forward and remove it.
- Remove the O-ring from the recess in the intake manifold and clean all the gasket surfaces.
- Installation is in the reverse order of removal.
- Drain the cooling system. Remove the radiator hoses. Remove the radiator.
- Remove all the drive belts. Remove the fan and fan pulley. Remove the bypass hose.
- Remove the crank pulley, the fuel pump and the distributor. Note the position of the distributor rotor before you remove the distributor.
- Remove the alternator and its bracket.
- Remove the harmonic balancer. You'll need a puller.
- Remove the two bolts which attach the oil pan to the front cover. Remove the bolts which attach the cover to the block.
- Remove the cover and remove the gasket material.
- To install, it is first necessary to remove the oil pump cover and pack the space around the oil pump gears completely full of petroleum jelly. Do not use gear lube. There must be no air space left inside the pump. Reinstall the pump cover using a new gasket. This step is very important since the oil pump may lose its prime any time it, the pump cover or the timing cover is disturbed. If the pump is not packed, it may not begin to pump oil as soon as the engine is started.
- Install the cover, using a sealer and new gaskets. Make sure the dowel pins engage the dowel pin holes before starting the bolts. Apply sealer to the bolt threads.
- Install the harmonic balancer, bolt and washer. It will be necessary to lock the flywheel in some way to tighten the balancer bolt to specifications. Most mechanics remove the flywheel cover and hold the flywheel stationary with a large prytool.
- The rest of the installation is in the reverse order of removal.
TIMING GEAR COVER OIL SEAL REPLACEMENT All Engines
See Figure 13
- After removing the gear cover, pry the oil seal out of the front of the cover with a large prytool.
- Install a new lip seal with the lip (open side of seal) inside and drive or press the seal into place.
- Lightly coat the seal with engine oil before replacing the cover on the block.