Gast 8R Series - Manual (Page 4)

SERVICE KIT INSTALLATION
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Disconnect electrical power supply cord before
installing Service Kit.
If product is hard wired into system, disconnect
electrical power at the circuit breaker or fuse box
before installing Service Kit.
Disconnect air supply and vent all air lines to
release pressure or vacuum.
Failure to follow these instructions can result in
death, fire or electrical shock.
WARNING
Electrical Shock Hazard
Gast will NOT guarantee field-rebuilt product
performance. For performance guarantee, the product
must be returned to a Gast Authorized Service Facility.
Disassembly
To make reassembly easier, note the location of parts
when disassembling.
1. Disconnect electrical power to pump.
2. Disconnect air supply and vent all air lines to
release pressure or vacuum.
3. Note the direction of the arrows so you can orient
the pump head correctly during reinstallation.
4. Remove the four corner head screws and remove
the head and valve.
5. Clean the pump using water-based solvents.
4
Solvent Cleaning
Use only Gast AH255B Solvent or other
non-petroleum based solvent. Do Not use kerosene or
ANY other combustible solvent to clean product.
WARNING
May contain solid or liquid material
that can result in eye or skin damage.
Wear eye protection when using this product.
Solvent Stream
Reassembly
1. Place the valve in the valve plate pocket using the notch
in both parts as an aid in orientation.
2. Assemble the head by aligning the two holes with the two
pins in the valve plate.
3. Torque the head screws to 6 in. lbs. into the bracket.
CAUTION:
Do not over-tighten head screw(s). To do so can risk
stripping the plastic threads.
If pump still does not produce proper vacuum or
pressure, send unit to a Gast Authorized Service Facility
for repair.