34 Chapter II 6-Cylinder EnginesBOLT BRACKETS TO INTAKE PORTSTIGHTEN SCREWJ^^SECURELY -Tool-T52P-6085-DAD 1276Fig. 7 Cylinder Head Holding FixturePull the oil drain line and clip out of the number 1 side out, in each end of the rocker shaft. Install a flat1234Remove the manifold to head bolts, and pull themanifold assembly away from the head. Brace the as Fig. 9 Valve Stem Lock Removal or Installationsembly so the inlet pipe will not be damaged.Install the cylinder head holding fixtures for convenience in lifting the head and to protect the gasketsurfaces (fig. 7).Remove all cylinder head bolts. Install the cylinderhead guide studs (fig. 8). Lift the cylinder head assemsupport bracket. Remove the cotter pins at each end ofthe rocker arm shaft, and remove the flat washers andspring washers. Remove the plugs at each end ofthe shaft.NOTE: The plugs are an interference fit. To removebly off the engine. plugs, drill or pierce the plug on one end, thenuse a steel rod to knock out the onplug the opposite7/1614x6"BOLTend.Working from the open end, knock out theCUT OFF HEAD, TAPER END AND SLOT_ i FOR SCREW DRIVER AS SHOWNremaining plug.Slide the rocker arms, springs, and brackets off theshaft. Be sure to identify the parts.c. Cylinder Head Disassembly.m rz.-Clean the carbon out of the <strong>com</strong>bustion chambersbefore removing the valves. Compress the valve springs(fig. 9), then remove the valve retainer locks and release the spring. Remove the sleeve, spring retainer,Fig. 8Cylinder Head Guide Studsspring, stem seal, and valve.Discard the valve stem seals. Identify all valve parts.CAUTION: Do not pry between the head and blockas the gasket surfaces may be<strong>com</strong>e damaged.b. Rocker Shaft Disassembly.d. Rocker Shaft Assembly.Oil all moving parts with engine oil.Using a blunttool or large diameter pin punch, install aplug, cupROCKER ARMCOVER RETAINING STUD^LOCKNUTFLAT WASHERFLAT WASHERADJUSTING SCREW/OOOtSPRING /WASHER PLUG ROCKER SHAFTCOTTERPIN6614Fig. 10Rocker Mechanism Disassembled
~~Section 3 Cylinder Head and Valves 35washer, spring washer, another flat washer, and a cotterpin on one end of the shaft. Install the rocker arms, supUNDERSIDE OF SPRING RETAINERportbrackets, and springs in the order shown in fig. 10.Complete the assembly by installing the remaining flatwashers with the spring washer between them, and install the cotter key.e. Cylinder Head Assembly.Install each valve in the port from which it wasremoved or to which it was fitted. Install a new stemseal on the valve. Install the valve springwith the closedcoil against the head surface, then install the valvespring retainer, and sleeve. Compress the spring, andinstall the retainer locks (fig. 9).Measure the valve springassembled height from themachined surface of the cylinder head spring pad to thespring retainer contact surface as shown in fig. 11. If theassembled height is lx%6 inches or greater, install thenecessary 0.030 inch thick spacer and/or spacers between the cylinder head valve spring pad and the valvespring to bringthe assembled height to the re<strong>com</strong>mended dimension of12%2-11%6 inches.CAUTION: Do not install spacers unless necessary.Use ofspacers in excess ofre<strong>com</strong>mendations willresult in overstressing the valve springs which willlead to excessive load loss and spring breakage.f. Cylinder Head Installation.Clean carbon deposits and gasket sealer residue fromthe head and block gasket surfaces. Inspect the head forany damage and repair as necessary. Apply a coating ofcylinder head gasket sealer to both sides of a newgasket. Use the brush furnished to spread the sealerevenly over the entire gasket surface. Position the gasketover the guide studs on the cylinder block. Lift thecylinder head over the guides and slide the head downcarefully. Before installing the cylinder head bolts, coatthe threads of each bolt with a small amount of waterresistant sealer. Install two bolts at opposite ends of thehead to hold the head and gasket in position. Removethe guides, then install the remaining bolts. Remove thecylinder head holding fixtures. The cylinder head bolttighteningsteps. First,(cold)them to 65procedure is performed in three progressivetighten the bolts to 55 foot-pounds torquein the sequence shown in fig. 12,then tightenfoot-pounds torque (cold) in the samesequence. Install the push rods in their proper sequence.Position the lower end of the rods in the tappet sockets.Position the valve rocker arm assembly on the head,then install the oil drain line, clip, and retaining screwon the number 1bracket. Make sure the oil line entersthe shaft locating hole. Position the oil feed line on theSURFACE OF SPRING PAD 6504Fig. 71 Checking Valve SpringTypicalAssembled Height-number 6 bracket. Make sure the lower end of the oilline "O" ring seal is in the oil supply counterbore, theninstall the bolt. Tighten all the retaining bolts to 45-55foot-pounds torque. Perform a preliminary (cold) valvelash adjustment.Install the manifold assembly, the ignition coil, andspark plugs. Connect the spark plug wires and the temperature sendingunit wire. Connect the radiator upperhose and the heater hoses. Install the, accelerator pedalrod. Position the two vacuum lines and the fuel line onthe engine, then connect the lines. Connect the windshield wiper hose. Connect the battery cable to the head.Fill the coolingsystem. Remove the tape from the carburetor air horn, then connect the choke wire. Start theengine and run it for a minimum of 30 minutes atapproximately 1200 r.p.m. With the engine warmed up,tighten the cylinder head bolts, in proper sequence, to75 foot-pounds torque (hot),then check the valve lashwith the engine idling and adjust it if necessary.NOTE:After the cylinder head bolts have beentightened to specifications, the bolts should not bedisturbed.Coat one side of the rocker arm cover gasket with oilresistant sealer, and lay the cemented side of the gasketin place in the cover. Install the rocker armcover,making sure that the gasket seats evenlyall around thehead. Install the rubber seals on the studsmaking suretheyare centered in the cover openings. Tighten theretaining nuts to 2.0-2.5 foot-pounds torque.25 B ~ Z^Z55ifOTi flph rtorMoot)oo(?og)o9oo9oo^oJ1225Fig. 12Cylinder Head Bolt Tightening Sequence
- Page 1 and 2: 19 5 6FORDDIVISIONM O T O COMPANY
- Page 3 and 4: -19 5 6Copyright 1955FORD MOTOR COM
- Page 5 and 6: .- ..49.... 78.847414551011.Forewor
- Page 7 and 8: cessories."SectionPart ONEPOWER PLA
- Page 9 and 10: Section 1 Trouble Shooting(d) If th
- Page 11 and 12: Section 2 Engine Tune-Uptributor va
- Page 13 and 14: Section 3 Engine Removal and Instal
- Page 15 and 16: up"Section 3 Engine Removal and Ins
- Page 17 and 18: Section 4 Intake and Exhaust Manifo
- Page 19 and 20: S-8680Section 5 Rocker Mechanism, C
- Page 21 and 22: Section 5 Rocker Mechanism, Cylinde
- Page 23 and 24: Section 6 Timing Chain, Sprockets,
- Page 25 and 26: up9'Section 7 Flywheel, Crankshaft,
- Page 27 and 28: Section 7 Flywheel, Crankshaft, and
- Page 29 and 30: Section 8 Cylinder Block, Pistons,
- Page 31 and 32: Section 8 Cylinder Block, Pistons,
- Page 33 and 34: SectionPart ONEPOWER PLANTChapter6-
- Page 35: Section 2 Manifolds 33c. Installati
- Page 39 and 40: Section 5 Cylinder Front Cover and
- Page 41 and 42: STANDARDSection 6 Sprockets andTimi
- Page 43 and 44: Section 7 Flywheel, Crankshaft, and
- Page 45 and 46: Section 8 Connecting Rods and Beari
- Page 47 and 48: Section 9 Oil Pan, Oil Filter, and
- Page 49: LITHO IN U.S.A.7098-56
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