Crane Barnes 3SE3024L, Installation And Operation Manual

10

Position unit upright, using blocks to avoid resting unit on 
shaft. Unscrew cord hex bolts (6) and remove compression 
fl ange (10a) and power cord (10). Remove snap ring (8) with 
a fl at head screwdriver. Pull the terminal block (27) out of the 
motor housing (2) using a T-bolt or pair of pliers and a .25-20 
screw in the threads of the terminal block (27). Be sure to 
leave slack on the motor leads connected underneath. Use 
needle nose pliers to pull each female connector off of the 
pins on the underside of the terminal block (27) (see Figure 
6). The unit voltage should be noted. Remove socket head 
cap screws (39). Vertically lift upper pump assembly from 
seal plate (25) by lifting handle (7). Inspect square rings (42) 
for damage or cuts. 

Motor - 

Remove the motor bolts and lift motor stator from 

motor rotor and seal plate (25). Unscrew conduit bushing (14) 
from seal plate (25) and lift motor rotor, shaft, bearing (42), 
rotating portion of seal (46), washer (9) and conduit bushing 
(14) from seal plate (25).

Inspect windings for shorts and check resistance values. 
Check rotor for wear, if rotor or the stator windings are 
defective, the complete motor must be replaced. To test 
the temperature sensor (if equipped), check the continuity 
between the black and white wires. If found to be defective 
contact a motor service station or CP&S Service Department. 

Check motor capacitor (3, 1 phase units) with an Ohm meter 

by fi rst grounding the capacitor by placing a screwdriver 
across both terminals and then removing screwdriver.  
Connect Ohm meter (set on high scale) to terminals. If needle 
moves to infi

 nity (∞) then drifts back, the capacitor is good. 

If needle does not move or moves to infi nity (∞) and does 
not drift back, replace capacitor (3). To test the temperature 
sensor (P1/P2), check for continuity between the wire leads 
(see Figure 10). If found to be defective, contact a motor 
service station or CP&S Pumps Service department. Inspect 
motor winding for shorts and check resistance values. Check 
rotor for wear. If rotor or the stator windings are defective, the 
complete motor must be replaced.

Important! - Handle seal parts with extreme care. 
Do Not scratch or mar lapped surfaces.

Seal - 

Remove rotating member (46a), spring (46c) and 

retaining ring (46d) from shaft. (see Figure 3). Examine all 
seal parts and especially contact faces. Inspect seal for signs 
of wear such as uneven wear pattern on stationary members, 
chips and scratches on either seal face. 

DO NOT

 interchange 

seal components, replace the entire shaft seal (46). If 
replacing seal, remove stationary (46a) from seal plate (25) 
by prying out with fl at screwdriver.

Bearing - 

Examine bearing (47) and replace if required. If 

replacement is required, remove bearing (47) from motor 
shaft using a wheel puller. Washer (9), retaining ring (30) and 
conduit bushing (14) can now be removed from motor shaft.

Important ! - All parts must be clean before 
reassembly.

F-3.2) Reassembly:
Bearing -

 When replacing bearing, be careful not to damage 

the rotor or shaft threads. Clean the shaft thoroughly. Slide 
conduit bushing (14) and washer (9) over motor shaft. Insert 
retaining ring (30) into groove on shaft. Apply adhesive 
compound to the shaft and press bearing (47) on the motor 
shaft, position squarely onto shaft applying force to the inner 
race of the bearing only, until bearing seats against retaining 
ring (30).

Seal -

 Clean and oil seal cavity in seal plate (25). Press 

stationary member (46a) fi rmly into seal plate (25), using a 
seal pusher, nothing but the seal pusher is to come in contact 
with seal face (See Figure 6). Make sure the stationary 
member is in straight.

Important! - DO NOT hammer on the seal pusher 

- 

it will damage the seal face.

Slide retaining ring (46d) over shaft and let rest on bearing 
(47). Place spring (46c) over shaft and let rest on retaining 
ring (46d). Lightly oil (DO NOT use grease) shaft, bullet and 
inner surface of bellows on rotating member (46b) (See 
Figure 7), with lapped surface of rotating member (46b) 
facing outward, slide over bullet and onto shaft using seal 
pusher, making sure spring (46c) is seated in retaining ring 
(46d) and spring (46c) is lined up on rotating member (46b) 
and not cocked or resting on bellows tail.

Motor - 

Slide motor rotor with conduit bushing (14), washer 

(9), bearing (47) and seal parts (46b, c, d) into seal plate (25) 
until bearing (47) seats in seal plate (25). Center washer (9) 
on bearing (47) and tighten conduit bushing (14) on seal plate 
(25). Lower motor stator over rotor until seated in seal plate 
(25), while aligning holes for motor bolts. Insert motor bolts 
and torque to 22 inch pounds. If pump is a single phase unit 
place bracket (15) on one of the motor bolts positioned so 
capacitor will lay on opposite side of the cord entry bosses 
of the motor housing (2). Insert capacitor (3) in bracket (15), 
attach motor leads with terminals to capacitor.

FIGURE 6

Stationary Member (46A) 
Polished Face Out

Seal Plate (25)

Seal Pusher

Rotating Member (46D)

Bullet

Motor & Seal Plate

Seal Pusher

Stationary

FIGURE 7