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308550 19
Service
Diaphragm Repair
Tools Required
D Torque wrench
D 13 mm socket wrench
D Adjustable wrench
D 19 mm open–end wrench
D O-ring pick
D Lithium-base grease
Disassembly
NOTE: A Fluid Section Repair Kit is available. Refer to
page 27 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.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 12.
1. Relieve the pressure.
2. Remove the manifolds and disassemble the ball
check valves as explained on page 18.
3. Using 13 mm socket wrenches, remove the
screws (107 and 108) holding the fluid covers
(101) to the air covers (23). Pull the fluid covers
(101) off the pump. See Fig. 12.
Fig. 12
1
2
23
101
A
2
B
Arrow (A) must point toward air valve (B).
You must torque the eight long screws (108) first, then the
short screws (107). Torque to 190–220 in-lb (21–25 NSm).
See Torque Sequence, page 32.
1
107
108
1
04620B