Hitachi 222104 important safety instructions Piston Detail

Service

10.Place the ball (18) on the fluid piston (19c).

11.Apply thread sealant to the threads of the fluid piston (19), screw the fluid piston onto the piston rod (10), and torque to 23 ft-lb (31.2 NSm).

12.Install the air motor rod assembly by inserting it up through the base from the bottom.

13.Install the spring (8) and the washer (7) on top of the piston rod (10).

14.Apply sealant to the threads of the piston rod (10). Carefully hand tighten the air piston assembly (15) onto the piston rod until it is secure. Do not tighten with tools.

15.Lubricate the outside of the air piston assem- bly (15). Install the spring (17) into the cap (2). Lubricate the gasket (6*), and install it in the cap. Install the cap on the cylinder (4).

16.Assemble the cylinder (4) onto the base (5). Screw the cylinder and base together hand tight.

17.Screw the intake valve housing (21) of the assembled intake valve assembly onto the fluid cylinder (24).

18.Heavily lubricate the top inside diameter of the fluid cylinder (24) and the outside threads. Careful- ly guide the fluid piston assembly into the fluid cylinder. Push the fluid cylinder up, and screw it into the pump base. Use a pipe wrench on the knurled part of the intake valve housing (21) to tighten the fluid cylinder and the intake valve.

2

	17		15c*
	6*		15d
	4		15a*
			15e
	15		15b*
	7		15f
	8
			15g Apply sealant to threads of screw,
	10		and torque to 10 to 14 in-lb
			(1.3 to 1.6 N-m).
		air inlet
	5
		13
		Piston Detail		NOTE: Use pliers and
		pliers	15c*	wrench only for loosening
				the piston assembly from
			15a*	the piston rod. Do not use
				them for tightening the
	fluid outlet			piston assembly.
	24	0.032 in.	15b*
		(0.8 mm)
	21	minimum
			wrench
Fig. 3	intake valve			05943B

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