Center Section Repair - Graco SaniForce 2150 Operation Manual

Repair
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
Remove power from the motor. Disconnect all
hoses.
2. Remove the manifolds and
check valve parts as directed in
Disassemble the Ball Check Valve, page
3. Remove the fluid covers and
diaphragms as directed in
Disassemble the Standard Diaphragms, page
TIP: Clamp the gear box bracket (15) to the
TIP: TIP:
bench. Leave the pump connected to the motor.
4. Use a 10 mm hex wrench to remove 4 bolts (117).
Pull the pump off the alignment housing (116).
TIP: It may be necessary to tap the pump with a
TIP: TIP:
rubber mallet to disengage the coupler.
5. Use a 5/16 hex wrench to remove the plug (124).
Use a 30 mm socket wrench to remove the
bearing bolt (106) and the o-ring (108) from the
top.
6. Turn the drive shaft assembly (112) so the
groove on the shaft is at the top, in line with the
alignment markings.
18
Section
Section
11.
11.
14.
7. 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.
NOTE: NOTE: NOTE: Remove the bolt after the drive shaft is
freed
NOTICE
NOTICE NOTICE
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.
8. The shaft coupler (113) might come out with
the drive shaft assembly. If not, remove from
gearbox (118).
9. Remove the seal cartridge (110), the o-ring (109)
and the radial seal (111) from the drive shaft
assembly.
10. Slide the piston assembly (102) out of the center.
11. Only remove the alignment housing (116) if
needed. Use a 10 mm hex wrench to remove 4
bolts (120). Pull the alignment housing off the
gearbox (118).
12. Leave the gearbox coupler (114) attached to the
gearbox shaft (118) unless it is damaged. If you
need to remove it, a bearing puller must be used.
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