Manual

18
Service
Diaphragm Repair
Tools Required
D Torque wrench
D 10 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. Use
784–90617 for Hytrel pumps and 784–90618 for Teflon
pumps.
WARNING
To reduce the risk of serious injury whenever you are
instructed to relieve pressure, always follow the Pres-
sure Relief Procedure on page 11.
1. Relieve the pressure.
2. Remove the manifolds and disassemble the ball check
valves as explained on page 17.
3. Using a 10 mm socket wrench, remove the screws
(106) holding the fluid covers (101) to the air covers
(23). Pull the fluid covers (101) off the pump. See Fig.
12.
Figure 12
1
2
23
101
106
A
2
B
Arrow (A) must point toward air valve (B).
Apply medium-strength (blue) LoctiteR or equivalent to
the threads, and torque to 120–150 in-lb (14–17 N.m).
02635A
1