51. To check the length ot the push rod, fit the rear cylinder shell in position over the piston and against the center plate; do not use a gasket at this time between the cylinder shell and center plate.

NOTE: The hydraulic cylinder has not yet been assembled to the cylinder shell.

52. Using the special gauge, Fig. 24, check the length of the push rod by measuring the distance fronm the end of the cylinder shell (no gasket) to the end of the push rod. If the push rod is too long or if it lacks more than .030” of touching the gauge, reset the piston on the Piston rod so that the push rod comes to the required length. Lock and stake both piston nuts. 53. Place the retainer washer, the rubber seal and the leath el seal in the mounting flange end of the hydraulic cylinder. Dip the rubber seal in hydraulic fluid before assembly but do not oil the leather seal, since it is oiled sufficiently whe manufactured and excess oil will damage the leather seal.

54. Attach the hydraulic cylinder to the rear cylinder shell.

55. Dip the hydraulic cylinder piston assembly and piston cup in hydraulic fluid and place the piston assembly cup and spring in the hydraulic cylinder; install the stop and end plug.

56. Place new gaskets on both sides of the center plate.

57. Dip the power cylinder piston leathers in B—K Vacuum Cylinder Oil; also apply a liberal coat of this oil to the cylinder walls.

58. Place the cylinder shells in position over the pistons and firmly against the center plate. Line up cylinder shells and center plate with the scriber marks made before disassembling. Tighten the through-bolts evenly.

59. Place shellac on the threads of the fitting of the front cylinder shell and install the control valve.

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