308368
15
Service
Diaphragm Repair
Tools Required
D
Torque wrench
D
10 mm socket wrench
D
13 mm socket wrench
D
15 mm socket wrench (aluminum models) or
1” socket wrench (stainless steel models)
D
19 mm socket wrench
D
O-ring pick
D
Lithium-base grease
Disassembly
NOTE:
A Fluid Section Repair Kit is available. Refer to
page 21 to order the correct kit for your pump. Parts
included in the kit are marked with an asterisk, for
example (401*). Use all the parts in the kit for the best
results.
1.
Follow the
Pressure Relief Procedure Warning
on page 9.
2.
Remove the manifolds and disassemble the ball
check valves as explained on page 14.
3.
Using 10 and 13 mm socket wrenches, remove the
screws (106 and 112) holding the fluid covers
(101) to the air covers (23). Pull the fluid covers
(101) off the pump. See Fig. 11.
Fig. 11
1
2
23
101
A
2
B
Arrow (A) must point toward air valve (B).
Apply medium-strength (blue) Loctite
R
or equivalent to the threads.
You must torque the eight long screws (112) first, then the short
screws (106). Torque to 190 to 220 in-lb (22 to 25 N.m).
1
106
112
1
03949B
