Center Section Repair - Master MVP-150XL Repair Parts

Center Section Section Repair Repair
Center Center Section Repair
Disassemble the the Center Center Section
Disassemble Disassemble the Center
See the illustrations on page 18.
1. Follow the Pressure Relief Procedure, page 7
Remove power from the motor. Disconnect all
hoses.
2. Remove the manifolds.
3. Remove the covers and diaphragms as directed
in Disassemble the Diaphragms, page 9
TIP: Remove pump from stand and secure
TIP: TIP:
gearbox to bench. Leave the pump connected
to the motor.
4. Remove the drive shaft:
a. Use a 10 mm (M8) hex wrench to remove
4 bolts (117). Pull the pump off of the
alignment housing (116).
TIP: It may be necessary to tap the pump with
TIP: TIP:
a rubber mallet to disengage the coupler.
b. Remove CO inlet fittings. Use a 30 mm
2
socket wrench to remove the bearing bolt
(106) and the o-ring (108).
c. Turn the shaft so the groove on the shaft is
in line with the alignment markings on the
center section.
d. Use a 3/4–16 bolt to push out the drive
shaft assembly (112). You can also use the
bearing bolt (106), but remove the bearing
(107) first. Be sure that the groove on the
drive shaft remains aligned with the markings
in the center section.
Proper alignment is essential. Do not
apply more than about 10 in-lb (1.1 N•m)
of torque. Excessive torque could strip
the housing thread. If you encounter
resistance, check alignment or contact
your distributor.
3A7034A
Section
Section
.
NOTICE NOTICE NOTICE
e. The shaft coupler (113) might come out with
the drive shaft assembly. If not, reach into
the alignment housing (116) and remove the
shaft coupler (113).
f. Remove the seal cartridge, o-ring (109) and
the radial seal (111) with o-ring (111a) from
the drive shaft assembly.
5. Slide the piston assembly (102) out of the center.
.
Repair
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