MP Pumps HTO 120 INSTALL - Manual (Page 4)

MP PUMPS HTO SERIES
HTO 120 ASSEMBLY INSTRUCTIONS
FORM 3061-B
PRINTED IN U.S.A. (1-07)
1. Assemble drive sleeve #11 (29781), impeller
#1 (29770) and nut #3 (22655).
2. Thread pipe plug #16 (21255) into housing
#14 (26587).
3. With the housing on the bench, suction down,
place the impeller and drive sleeve assembly
into the housing.
4. Assemble the adaptor #9 (29160) to the
housing with gasket #15 (31518) between
them. Use six 3/8-16 studs #18 (21261),
washers #17 (21266), and hex nuts
#25 (21241).
5. Install three gaskets #6 (29165), two carbon
isolators #10 (29158) and one O-ring #8
(29230) onto drive sleeve. The O-ring and one
gasket go between the two carbon isolators.
The second gasket goes between the carbon
isolators and the adaptor. The third gasket goes
between the carbon isolator and the seal
housing.
6. Assemble seal #2 (29773) onto the drive sleeve
with a liberal amount of grease to prevent the
seal from being damaged.
7. Press the lip seal #13 (29774) into the seal
housing #12 (29772), flat side down. Press the
seal seat into the seal housing flush against
the lip seal.
8. Assemble the seal housing #12 (29772) to the
adaptor #9 (29160) with three 5/16-18
screws #5 (29178). As steady pressure is
applied to the seal housing to hold it in
place, thread the three 5/16-18 screws in
and torque them to 25 inch-lbs. each.
Working around the bolt circle tighten the
screws in 25 inch-lbs. increments until each
screw is tightened to 150 inch-lbs.
9. Assemble fan clamp #4 (29775) to drive
sleeve.
10. Assemble the pump to the motor. Slide the
motor onto the pump. Install and tighten the
four mounting screws. Push the impeller
towards the motor until it stops (contact with
the impeller and isolater). Tighten the drive
clamp screws to 120/140 inch-lbs. and install
piping.
NOTE:
Follow oil manufacturers guide for fill
and start-up. The seal cavity will vent
internally during start-up.
- 4 -