Impeller Removal, Mechanival Seal Replacement

maintenance

Impeller Removal

Refer to the the following procedure and Figure 18 for the removal of the impeller.

1.	Remove oil screw and gasket from the oil fill chamber
	port. Drain oil from oil chamber as referenced
	in Figure 18.
2.	Remove the four hex nuts and lock washers that secure
	the base plate to the inlet plate.
3.	Remove base plate, inlet plate, o-ring and strainer.
4.	Next, remove the four bolts and lock washers that
	secure pump casing to the seal bracket.
5.	Remove pump casing and seal bracket.
6.	Remove impeller cap nut and washer from motor shaft.
7.	Using a rubber mallot, tap impeller off motor shaft

ST61230/ST61460

ST41230/ST41460

remove impeller and associated hardware from motor

shaft. If necessary use a puller to remove impeller.

8. Reassemble in reverse order.

Mechanival Seal Replacement

1.Clean entire area surrounding mechanical seal.

2.Lubricate mechanical seal with 30 wt. motor oil before installing back on motor shaft.This lubrication will help ease the seal back onto the motor shaft.

3.In addition replace o-rings, gaskets and any associated rubber components that show signs of wear.

4.Inspect and replace if necessary the pump casing (volute) and seal bracket.

NOTICE

Clearance between impeller and wear plate (pump casing) should be between .011~.019 in.(0.3~0.5 mm).If impeller is defective or badly worn, replace immediately.

KEY

SEAL

BRACKET

PUMP

CASING

LOCK

WASHER (4)

STANDOFF

SCREW

MOTOR

SHAFT

GASKET

OIL DRAIN

SCREW

IMPELLER

CAP NUT

LOCK

WASHER (4)

SCREW (4)

INLET PLATE

STRAINER

HEX NUT (4)

LOCK WASHER (4)

Figure 18. Impeller Removal

page 22 — st4/ST6 series submersible pumps • operation AND PARTS manual — rev. #1 (11/12/13)

ST61230, ST61460, ST41230, ST41460 specifications

The Multiquip ST41460, ST41230, ST61460, and ST61230 are a series of portable generators designed to meet the power needs of various applications, from construction sites to outdoor events. These generators combine robust performance with user-friendly features, enabling operators to rely on them for consistent power delivery.

Starting with the ST41460, this generator provides a maximum output of 4,600 watts, making it an ideal choice for users requiring significant power. It is equipped with a powerful Honda engine known for its fuel efficiency and durability. The dual fuel capability allows the ST41460 to run on either gasoline or propane, providing flexibility in fuel choice depending on availability or preference. Additionally, the unit features a compact design, making it easy to transport and store.

The ST41230 is optimized for those who need a lighter and more portable option without sacrificing performance. With a maximum output of 3,000 watts, it is perfect for powering tools, lights, and small appliances. This generator also offers a quiet operation, making it suitable for residential areas or events where noise reduction is a priority. The ST41230 further includes a digital panel that displays fuel level and run time, enhancing usability and monitoring.

Moving to the ST61460, this model takes power output up a notch with 6,000 watts peak capacity. Its heavy-duty construction ensures reliability on job sites, while the full-length skid base offers added stability and protection. This unit is also equipped with advanced inverter technology, providing clean and stable power perfect for sensitive electronics.

Lastly, the ST61230 features a balance of power and portability, with a maximum output of 3,000 watts that caters well to users in need of moderate power for tools and recreational use. The incorporation of safety features such as low-oil shutdown and circuit breaker ensures that the generator operates safely and reduces the risk of damage to connected devices.

Each of these Multiquip generators boasts user-friendly features, including easy-start systems, multiple outlet options, and rugged wheels for enhanced mobility. With their reliable performance, advanced technologies, and robust construction, the ST41460, ST41230, ST61460, and ST61230 models are ideal solutions for anyone seeking dependable power in various settings. Whether for construction, home use, or recreational activities, these generators provide reliable support for all power needs.

Multiquip ST61230, ST61460, ST41460, ST41230 manual Impeller Removal, Mechanival Seal Replacement

Models: ST61230 ST61460 ST41230 ST41460