DEMO - 1956 Ford Car Shop Manual - FordManuals.com

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26 Chapter 1 General Engine Overhaul, Inspection, and RepairTool T52L-6266-BGDCYLINDER BLOCK CORE PLUGS-1271Fig. 37 Expansion-Type Plug Installation TypicalFig. 35 Cylinder Bore Measurement TypicalNOTE: A 0.030 inch oversize plugis available.clean. Dirt in the threads can cause bindingand resultin a false torque reading. Use atap to true up threadsand to remove deposits if necessary.Inspect the cylinder bores for scoring, taper, out ofroundness, and wear. Use a cylinder bore gauge to makethe measurements (fig. 35). Follow the instructions ofthe tool manufacturer. Only experienced personnelshould be permitted to take these measurements.Inspect all expansion-type plugs for evidence ofleakage.(2) REPAIRS. To remove an expansion-type plug,drill a Vi inch hole in the center of the plug and removethe plugas shown in fig. 36.Clean the plug recessRebore cylinders that are deeplyscored and whentaper and/or out-of-roundness are excessive. If the cylinder bore and piston wear are not excessive, new servicepiston rings will give satisfactory performance.(3) BORING CYLINDER BLOCK. Follow the boring equipment manufacturer's instructions. This workshould be performed byexperienced personnel only.Bore the cylinder with the most wear first to determine the proper oversize. If the cylinder will not cleanup when bored for the maximum oversize piston re<strong>com</strong>mended, the block should be replaced. Bore the cylinderto within approximately 0.0015 inch of the requiredoversize diameter. This will allow enough stock for thefinal stepof honing the bores so the correct surface finishthoroughly. Coat the flange of the new plugwith sealerand pattern are obtained. Use a number 220-280 gritand install it with the flange facing out. Drive the plugin until the flange is flush or slightly below the castingsurface (fig. 37).hone for this operation.CAUTION: Thoroughlyclean the block to remove allparticles after theboring and honing operations,then coat the bores with oil.(4) CYLINDER BORE "GLAZE'' REMOVAL.Whenever piston rings are installed in a used cylinder,remove the "glaze" on the bore to aid in ring seating.Take allnecessary precautions to catch the grit. Passa hone or glaze removing tool through the cylinder borea few times. Do not hone more than enough to rough-upthe finish. Thoroughlyclean the cylinder bore and blockafter glaze removal, then oil the bores.b. Pistons, Pins,and Rings.(1) CLEANING AND INSPECTION. Remove theCYLINDER BLOCKDRILL Vi INCH HOLE IN PLUGCORE PLUGS 6600Fig. 36 Expansion-Type Plug Removal Typicalcarbon deposits from the pistons. Clean the piston ringgrooves with a ring groove cleaner (fig. 38). Make surethe oilring slots (or holes)are clean.
Section 8 Cylinder Block, Pistons, Piston Rings, and Connecting Rods and Bearings 27Groove Cleaning ToolT52L-6 1 10-AADFig. 38 Cleaning Ring Grooves6097CAUTION: Do not use a caustic cleaninga wire brush.solution orInspect pistons for fractures at the ring lands, skirt,and pin bosses, and for scuffed or scored skirts. Spongy,eroded areas near the edge of the pistontop are usuallycaused by detonation, or pre-ignition. A shiny surfaceon the thrust surface of the piston,offset from the centerline between the piston pin holes, can be caused by abent connecting rod. The normal wear pattern of a pistonis shown in fig. 39.Inspect the piston pins for signs of fracture or etching. Check the pin for proper fit in the piston and rodbushing. Check for wear in the pin retainer grooves.(2) REPAIRS. Replace pistons showingsigns ofexcessive skirt clearance or ring side clearance, wavyring lands, fractures or damage from detonation or preignition.Replace piston pins showing signs of fracture or etching. Piston pins that show wear or fit looselyin theFig. 39 Normal Wear PatternPISTON WEAR AREAS6609able pull, recheck calculations before trying anotherhone the cylinder to thepiston. If none can be fitted,next size piston. When a piston has been fitted,for assembly in the cylinder to which it was fitted.mark itNOTE: All pistons are the same weight, both standard and oversize; therefore, pistons ofvarious sizescan be intermixed without upsettingengine balance.Rebore only the cylinder or cylinders which require it.(4)ringFITTING PISTON RINGS. Select the properset for the size piston to be used. Before the ringsare installed on the piston, check each ring for propergapas follows:Position che ring in the cylinder bore in which it ispiston or rod bushing should be replaced. Always replace all piston pin retainers.(3) FITTING PISTONS. Pistons of 0.020, 0.030,0.040 and 0.060 inch oversize are available for mostengines. Check the parts catalogue for sizes available.To fit a piston in a cylinder bore, calculate the sizepiston desired by taking a bore check (fig. 35) andselect the proper size piston to provide the desiredclearance. Check the piston being fitted by attaching atension scale to the end of a feeler gauge ribbon {Viinch wide)of the proper thickness. Position the feeler onthe side of the piston 90 from the piston pin hole. Invertthe piston, then push the piston and feeler into the boreparallel to the crankshaft axis. Hold the piston and pullout the feeler ribbon, noting the readingscale (fig. 40).on the pullIf the scale reading is greater than the maximumallowable recheck calculations pull, to be sure that theNORMALproper size piston has been selected, check for a damagedpiston, try a new piston, or hone the cylinder bore toobtain the proper fit.allow-If the scale reading is less than the minimumFig. 40 Fitting Piston Typical6490
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: Section 7 Flywheel, Crankshaft, and
Page 31 and 32: Section 8 Cylinder Block, Pistons,
Page 33 and 34: SectionPart ONEPOWER PLANTChapter6-
Page 35 and 36: Section 2 Manifolds 33c. Installati
Page 37 and 38: ~~Section 3 Cylinder Head and Valve
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

DEMO - 1956 Ford Car Shop Manual - FordManuals.com

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