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Repair
18 312376L
Repair
Required Tools
• Torque wrench
• Hammer
• Packing nut wrench (supplied with displacement
pump)
• Set of socket wrenches
• Set of adjustable wrenches
• Loctite
®
2760
™
or equivalent
• Brass rod (pumps with 500cc displacement
pumps only)
• Torque wrench with claw foot (pumps with 60cc
and 500cc displacement pumps only)
Disconnect Displacement Pump
1. Flush pump; see Prime/Flush, page 13. Stop pump
at bottom of its stroke. Follow Pressure Relief Pro-
cedure, page 12.
2. Disconnect air hose.
3. Disconnect fluid hose. Hold fluid outlet fitting with a
wrench to keep it from being loosened while you dis-
connect fluid hose.
4. Remove platen from displacement pump. Refer to
Supply Units Repair-Parts manual 313527 for
instructions.
Keep hands and fingers away from the priming piston
during operation and whenever the pump is charged
with air to reduce the risk of injury. On the pump down-
stroke the priming piston extends beyond the intake
housing to pull the material into the pump. The priming
piston works under extreme force. During operation
and whenever the pump is charged with air, the priming
piston can severely injure or amputate a hand or finger,
or break a tool, caught between it and the intake hous-
ing. Always relieve the pressure before checking, clear-
ing, cleaning, flushing, or servicing any part of the
pump.
On Premier air-powered pumps, the rocker arms
(located beneath the rocker arm covers) move when air
is supplied to the motor. Never operate the pump with
the rocker arm covers removed.
If your system includes a remote DataTrak, discon-
nect the air motor harness from the motor as well.
FIG. 14
FIG. 15
Air Hose
Air Motor
ti10515a
Harness
Fluid Hose
ti10516a