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Repair
SP and FK Models PO Models
PT Models
Rounded si
de faces diaphragm
Apply lithium based grease.
Apply primer and medium-strength (blue) thread
locker. Torque to 65-70 ft-lb (88–95 N•m).
AIR SIDE markings on diaphragm must face
center housing.
If screw comes loose or is replaced, apply
permanent (red) thread locker to diaphragm side
threads. Apply primer and medium-strength (blue)
thread locker to shaft side threads.
Lips must face out of housing.
Cartridges (109) must be installed before pilot
valves (111).
Torque to 20-25 in.-lb (2-3 N•m).
3A2889A
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