Plunger Seal Kit 3430-0631
5. Final Pump Head Assembly:
Lubricate and insert o-ring No. 1720-0076 into the bottom of the pump body’s two circular
cavities (Fig.11). Use grease or vacuum seal grease to hold o-rings in place. Carefully place
sub-assembly into pump body’s lower half. Slide or reposition parts to get the assembly to
fit into place (Fig. 12). Extra care is usually necessary for positioning of the brass plunger
guide.Next, place lubricated o-rings in upper body half and squeeze lower body with
sub-assembly into upper body. Some lateral pressure will have to be applied to the two
valve casings to get them to feed into the pump body. Once the two identical body halves
are together, drop the bolts in so that the flanged nuts are positioned on the bottom (inlet)
side. Tighten nuts 35 to 40 in-lbs. Finally, lubricate connecting rod with wheel bearing
grease (three pumps of grease gun). Pump head is now ready for assembly onto motor or
gas engine.
Figure 11
Figure 12
375 Fifth Avenue NW
•
New Brighton, MN 55112 USA
Phone: (651) 766-6300
•
800-424-9776
•
Fax: 800-323-6496
w w w. h y p r o p u m p s . c o m
HYPRO
Hypro (6/13)
Printed in USA
California Proposition 65 Warning
-- This product and related
accessories contain chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm.
SG_L_1495_Rev. B_613:Layout 1 6/18/13 10:02 AM Page 2
