Zenith Pumps Bolt Torque, ISO View, Reassembly, Size UNC Recommended Alloy Steel Torque in-lbs

Reassembly continued

ring on the shaft with the ID tapering toward the pump. On the drive shaft ends, fit the bullnose on the end of the shaft. Work the seal gently over the end of the bullnose and down the shaft, as any dam- age could cause polymer leakage after start-up. Ease the seal into the wide end of the installation ring and, using the pressing tool, gently press the lip seal into the Rheoseal housing. Do not attempt to press on the lip seal with screwdriver or other pointed object, as this will damage the seal. Do not press the lip seal all the way into its cavity. Instead, allow it to protrude slightly so that it will be correctly seated by the seal cover. Carefully remove the special Zenith tools.

14)Slide the seal cover over the shaft until it rests on the protruding lip seal. Align the screw holes in the cover with those in the housing and insert the screws. Tighten them evenly in a criss- cross pattern so that the seal is slowly pressed into the seal housing. When the cover is touching the housing all the way around, remove the seal cover and torque the seal housing bolts down. Reinstall the seal cover on the shaft and torque it down. In reinstalling the pump, be certain to follow the instructions given in the Installation section of this manual.

Bolt Torque	Size (UNC	Recommended	Size (UNC	Recommended
	Alloy Steel)	Torque (in-lbs)	Alloy Steel)	Torque (in-lbs)
	#8-32	30	1/2-13	922
	#10-24	43	9/16-12	1,331
	#10-32	49 (UNF thread)	5/8-11	1,836
	1/4-20	103	3/4-10	3,257
	5/16-18	213	7/8-9	5,800
	3/8-18	378	1-8	8,000
	7/16-14	605	1 1/8-7	12,000
PEP-II
ISO View

Clockwise rotation, pressure building pump shown (standard).

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