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OIL-LESS PISTON
VACUUM PUMPS & COMPRESSORS
OPERATION & MAINTENANCE MANUAL
IMPORTANT: PLEASE READ THIS MANUAL AND SAVE FOR FUTURE REFERENCE.
Thank you for purchasing this Gast product. It is manufactured to the highest standards
using quality materials. Please follow all recommended maintenance, operational
and safety instructions and you will receive years of trouble free service.
www.gastmfg.com
ISO 9001 & 14001 CERTIFIED
®Registered Trademark/™Trademark of Gast Manu facturing Inc., Copyright ©2002 Gast Manufacturing Inc. All Rights Reserved.
PART NO. 70 - 2100 G441PL (REV-L)
Model 1HAB Shown
Product Use Criteria:
• Pump only clean, dry air.
• Operate at 32ºF - 104ºF (0ºC - 40ºC).
• Protect unit from dirt & moisture.
• Do not pump flammable or explosive gases or
use in an atmosphere that contains such gases.
• Protect all surrounding items from exhaust air. This
exhaust air can become very hot.
• Corrosive gases and particulate material will damage unit.
Water vapor, oil-based contaminants or other liquids must be filtered out.
• Consult your Gast Distributor/Representative before using at high altitudes.
• These pumps are oil-less and require NO lubrication.
The Teflon-filled rings are self-lubricating and require no oil.
• The motor bearings are grease-packed for the lifetime of the bearings.
Model 3HBB Shown Model 3HEB Shown Model PCD Shown
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Motor Control
It is your responsibility to contact a qualified
electrician and assure that the electrical installation
is adequate and in conformance with all national
and local codes and ordinances. Grounding
is required.
Determine the correct overload setting required to
protect the motor (see motor starter manufacturer’s
recommendations). Select fuses, motor protective
switches or thermal protective switches to provide
protection. Fuses act as short circuit protection for the
motor, not as protection against overload. Incoming line
fuses must be able to withstand the motor’s starting
current. Motor starters with thermal magnetic overload
or circuit breakers protect motor from overload or
reduced voltage conditions.
The wiring diagram supplied with the product provides
required electrical information. Check that power
source is correct to properly operate the dual-voltage
motors.
Your safety and the safety of others
is extremely important.
We have provided many important safety messages
in this manual and on your product. Always read
and obey all safety messages.
This is the safety alert symbol. This symbol
alerts you to hazards that can kill or hurt you and
others. The safety alert symbol and the words
“DANGER” and “WARNING” will precede all safety
messages. These words mean:
You will
be killed or seriously injured if you don’t
follow instructions.
You can be killed or seriously injured if you don’t
follow instructions.
All safety messages will identify the hazard, tell you
how to reduce the chance of injury, and tell you
what can happen if the safety instructions are not
followed.
Correct installation is your responsibility. Make sure
you have the proper installation conditions and that
installation clearances do not block air flow.
Lift the unit by the motor shell, motor foot or
flywheel (depending upon model design). Do Not lift
unit by shroud, filters or mufflers. These parts are
not designed to support the weight of the unit.
Blocking air flow over the product in any way can
cause the product to overheat.
Install safety guards as required to prevent potential
injury hazards or damage to surrounding objects.
INSTALLATION
Accessories
If unit will be used in a system where it will be required to
start against any system of back pressure, a positive
sealing, one-way check valve should be installed in the
air line between system and unit. This check valve is
included with all tank mounted compressor units.
The product’s intake and exhaust filters will provide
adequate filtration in most applications. Check filters
periodically and replace when necessary. Please consult
your Gast Distributor/Representative for additional filter
recommendations.
WARNING
DANGER
Plumbing
Remove plugs from the IN and OUT ports. Connect
with pipe and fittings that are the same size or larger
than the product’s threaded ports. Be sure to connect
the intake and exhaust plumbing to the correct inlet and
outlet ports. Ports will not support plumbing.
Install relief valves and gauges at inlet or outlet, or both,
to monitor performance. Check valves may be required
to prevent back streaming through the unit.
Mounting
This product can be installed in any orientation.
Mounting the product to a stable, rigid operation surface
and using shock mounts will reduce noise and vibration.
WARNING
c
Electrical Shock Hazard
Disconnect electrical power at the circuit breaker
or fuse box before installing this product.
Install this product where it will not come into
contact with water or other liquids.
Install this product where it will be weather
protected.
Electrically ground this product.
Failure to follow these instructions can result in
death, fire or electrical shock.
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Model with a power supply cord:
This product must be grounded. For either 120-volt or
220/240-volt circuits connect power supply cord
grounding plug to a matching grounded outlet. Do not
use an adapter. (See diagram.)
In the event of an electrical short circuit, grounding
reduces the risk of electric shock by providing an
escape wire for the electric current. This product may
be equipped with a power supply cord having a
grounding wire with an appropriate grounding plug.
The plug must be plugged into an outlet that is properly
installed and grounded in accordance with all local
codes and ordinances.
Check with a qualified electrician or serviceman if
the grounding instructions are not completely
understood, or if you are not sure whether the
product is properly grounded. Do not modify the
plug provided. If it will not fit the outlet, have the
proper outlet installed by a qualified electrician.
Model that is permanently wired:
This product must be connected to a grounded,
metallic, permanent wiring system, or an equipment
grounding terminal or lead on the product.
Power supply wiring must conform to all required safety
codes and be installed by a qualified person. Check
that supply voltage agrees with that listed on product
nameplate.
Electrical Connection
Minimum gage for extension cords
Amps Volts Length of cord in feet
120v 25 50 100 150 200 250 300 400 500
240v 50 100 200 300 400 500 600 800 1000
0-2 18 18 18 16 16 14 14 12 12
2-3 18 18 16 14 14 12 12 10 10
3-4 18 18 16 14 12 12 10 10 8
4-5 18 18 14 12 12 10 10 8 8
5-6 18 16 14 12 10 10 8 8 8
6-8 18 16 12 10 10 8 6 6 6
8-10 18 14 12 10 88664
10-12 16 14 10 886644
12-14 16 12 10 866642
14-16 16 12 10 866442
16-18 14 12 8 864422
18-20 14 12 8 664422
Extension cords:
Use only a 3-wire extension cord that has a 3-blade
grounding plug. Connect extension cord plug to a
matching 3-slot receptacle. Do not use an adapter.
Make sure your extension cord is in good condition.
Check that the gage wire of the extension cord is the
correct size wire to carry the current this product will
draw.
An undersized cord is a potential fire hazard, and will
cause a drop in line voltage resulting in loss of power
causing the product to overheat. The following table
indicates the correct size cord for length required and
the ampere rating listed on the product nameplate. If in
doubt, use the next heavier gage cord. The smaller
the gage number, the heavier the wire gage.
OPERATION
WARNING
c
Electrical Shock Hazard
This product must be properly grounded.
Do not modify the plug provided. If it will not
fit the outlet, have the proper outlet installed
by a qualified electrician.
If repair or replacement of the cord or plug is
necessary,do not connect the grounding wire
to either flat blade terminal. The wire with
insulation that is green or green with yellow
stripes is the grounding wire.
Check the condition of the power supply wiring.
Do not permanently connect this product to
wiring that is not in good condition or is
inadequate for the requirements of this product.
Failure to follow these instructions can result in
death, fire or electrical shock.
Grounded Plug
Grounding Pin
120-volt grounded connectors
shown. 220/240-volt grounded
connectors will differ in shape.
Grounded Outlet
WARNING
Injury Hazard
Install proper safety guards as needed.
Keep fingers and objects away from openings and
rotating parts.
When provided, motor terminal covers must be in
place for safe operation.
Product surfaces become very hot during operation,
allow product surfaces to cool before handling.
Air stream from product may contain solid or liquid
material that can result in eye or skin damage,
wear proper eye protection.
Wear hearing protection. Sound level from motor
may exceed 70 dBA.
Failure to follow these instructions can result in
burns, eye injury or other serious injury.
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It is your responsibility to:
• Regularly inspect and make necessary repairs to
product in order to maintain proper operation.
• Make sure that pressure and vacuum is released
from product before starting maintenance.
MAINTENANCE
c
Disconnect electrical power supply cord before
performing maintenance on this product.
If product is hard wired into system, disconnect
electrical power at the circuit breaker or fuse box
before performing maintenance on this product.
Failure to follow these instructions can result in
death, fire or electrical shock.
Electrical Shock Hazard
WARNING
Injury Hazard
Product surfaces become very hot during operation,
allow product surfaces to cool before handling.
Air stream from product may contain solid or liquid
material that can result in eye or skin damage,
wear proper eye protection.
Failure to follow these instructions can result in
burns, eye injury or other serious injury.
WARNING
Check the thickness of the rider ring. It should measure
greater than .055”. Change all rings if thickness
measures .055” or less.
Start Up
If motor fail to start or slows down significantly under
load, shut off and disconnect from power supply. Check
that voltage is correct for motor and that motor is
turning in the proper direction. If the motor is turning in
the wrong direction, it will overheat.
It is your responsibility to operate this product at
recommended pressures or vacuum duties and
room ambient temperatures. Do not start against a
vacuum or pressure load. Do not remove relief
valve head while unit is operating.
1. Disconnect electrical power supply to unit.
2. Vent all air lines.
3. Remove filter cover.
4. Check filter felt. Replace felt if it is covered with
contamination or shows signs of increasing
differential pressure.
5. Reinstall felt and filter cover.
Check that all external accessories such as relief
valves and gauges are attached and are not
damaged before re-operating product.
Pressure or Vacuum Tank Systems
Check the air filter cartridge. Adirty filter restricts air
flow and causes unit to run hotter resulting in longer
operating cycles.
Check the air receiver for moisture regularly. The
humidity in the environment will determine how quickly
moisture will accumulate and need to be drained.
Clean the pump and motor regularly. Dirt and film
buildup on the outer shell affects the unit’s ability to
dissipate heat.
SHUTDOWN PROCEDURES
It is your responsibility to follow proper shutdown
procedures to prevent product damage.
NEVER ADD OIL TO THIS OIL-LESS PUMP.
Proper shutdown procedures must be followed to
prevent pump damage. Failure to do so may result in
premature pump failure. Gast Manufacturing Oil-Less
Piston Vacuum Pumps and Compressors are
constructed of ferrous metals or aluminum which are
subject to rust and corrosion when pumping
condensable vapors such as water. Follow the steps
below to assure correct storage and shutdown between
operating periods.
1. Disconnect plumbing.
2. Operate product for at least 5 minutes without
plumbing.
3. Run at maximum vacuum for 10 - 15 minutes.
4. Repeat step 2.
5. Disconnect power supply.
6. Plug open ports to prevent dirt or other
contaminants from entering product.
If unit is operated at maximum duties in a fairly clean,
65ºF - 75ºF (18ºC - 24ºC) ambient environment with
35% relative humidity, complete first inspection and
maintenance after 4000 hours of operation. Earlier
maintenance may be required depending upon the
environment.
Check intake and exhaust filters after first 500 hours of
operation. Clean filters and determine how frequently
filters should be checked during future operation. This
one procedure will help assure the product’s
performance and service life.
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Check that all external accessories such as relief
valves and gauges are attached to cover and are
not damaged before re-operating product.
If pump still does not produce proper vacuum or
pressure, send unit to a Gast Authorized Service Facility
for repair.
1. Disconnect electrical power to pump.
2. Disconnect air supply and vent all air lines to
release pressure or vacuum.
3. Remove shroud, cylinder head and valve
components.
4. Remove cylinder and rings.
5. Clean all parts with water or non-petroleum based
solvent such as Gast AH255B Solvent. Do Not use
kerosene or ANY other combustible solvents.
6. Install piston seals, piston rings and rider rings on
piston. Locate ring joints approximately opposite
each other.
7. Use cylinder screws with washers to attach cylinder
to bracket. Tighten screws only until they are finger
tight.
8. Move pistons to top dead center position. Adjust
each cylinder flush with top of piston.
9. Torque cylinder screws to 150-160 in. lbs.
10.Replace valve components in original order.
11.Install cylinder head and head screws. The exhaust
ports have been marked on the cylinder heads by
omitting the ends of two of the fins. Do not
tighten screws at this time.
12 Install manifold nuts and seals on manifold. Insert
into cylinder head and manifold.
13.Torque head screws to 150-160 in. lbs.
14.Turn fan by hand to check that rod assembly is not
hitting head. If rod hits head, loosen cylinders and
adjust.
15.Install manifold and tighten manifold nut one-quarter
to one-half turn beyond finger tight.
16.Operate unit for 10 minutes. Tighten screws again.
17.Install fan shroud.
Gast will NOT guarantee field-rebuilt product
performance. For performance guarantee, the
product must be returned to a Gast Authorized
Service Facility.
Service Kit contents vary. Most contain head and
cylinder gaskets, valves, piston rings and seals, rider
rings and felt filters.
SERVICE KIT INSTALLATION
Unit stalls after vacuum or pressure starts building
up in receiver:
1. Disconnect electrical power supply from unit.
2. Check that voltage from power source matches that
listed on nameplate.
3. Check wiring connections against diagram on
nameplate. Single voltage motors will operate only
at designated voltage.
Motor will not start:
1. Disconnect electrical power supply from unit.
2. Check that voltage from power source matches that
listed on nameplate.
3. Check wiring connections against diagram on
nameplate. Single voltage motors will operate only
at designated voltage.
4. Reconnect electrical supply to unit. Check that
power is on. If extension cord is used, check that it
is the correct size and length to adequately supply
power to the unit.
5. If unit will still not operate, contact your Gast
Distributor/Representative or a Gast Authorized
Service Facility.
Motor starts at 0 PSI but will not start under
pressure:
1. Replace the check valve.
2. Wait for the thermal overload switch to reset before
attempting to operate.
3. If unit will not restart, the thermal overload switch
may need to be replaced. If there isn’t a thermal
overload switch, the motor may be damaged and
requires service.
Motor starts intermittently:
1. Disconnect electrical power supply from unit.
2. Check points in the pressure or vacuum switch for
wear or dirt.
3. Check for dirt buildup or uneven wear.
4. Replace parts as required.
Unit cycles On-Off more often than when first
installed:
1. Check air receiver and drain water that has
accumulated.
Unit or motor is running more often than when first
installed:
1. Check system for air leaks. If new or different
pneumatic equipment has been added, the air
requirements may have changed.
2. Check and clean filters.
3. Check for buildup of foreign material on head.
4. Check valves and rings for wear and damage.
SPECIFIC PROBLEMS AND REMEDIES
WARNING
c
Electrical Shock Hazard
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.
Vent all air lines to release pressure or vacuum.
Failure to follow these instructions can result in
death, fire or electrical shock.
Page 6
Air receiver loses pressure:
1. Check for system leaks through pipes, fittings and
seals.
2. Inspect the check valve to see if it is allowing air
pressure to leak back into unit.
3. Pressure pumps will have bubbles around head
assembly during operation. Stop operating the
pump for a few minutes and check for air leaks at
pump.
4. Vacuum systems should have the check valve
removed and inspected for dirt buildup. It may be
necessary to need an AV460 filter installed prior to
tank to eliminate contaminants.
A leak is located at the unit:
1. Vent all pressure from inside the air receiver until
gauge reads 0 PSI.
2. Inspect check valve for dirt buildup, wear and proper
operation.
3. Replace check valve if necessary.
PARTS & ORDERING INFORMATION
REF DESCRIPTION QTY 1HAA 1HAB 1HAE 1LAA 1VAF 2HAH 2LAF 3HEB 3HEE 3LEM
1 INLET FILTER ASSEMBLY 1 B300A B300A B300A B300A B300A B300A B300F B300F B300F B300F
2 ∆ FELT 1 B344A B344A B344A B344A B344A B344A B344A B344A B344A B344A
3 SAFETY VALVE 1 AS100E AS100G AS100G AS100C – AS100G AS100C AS100G AS100G AS100C
4 CYLINDER HEAD 1 AF508 AF508 AF508 AF508 AF508 AF508 AF508 AH691 AH691 AH691
5 ∆ HEAD GASKET 1 AF518 AF518 AF518 AF518 AF518 AF518 AF518 AF520A AF520A AF520A
6 ∆ OUTLET VALVE 1 AF531 AF531 AF531 AF531 AF531 AF531 AF531 AF545 AF545 AF545
7 PLATE VALVE 1 AF529 AF529 AF529 AF529 AF529 AF529 AF529 AK779 AK779 AK779
8 ∆ INLET VALVE 1 AF530 AF530 AF530 AF530 AF530 AF530 AF530 AF544 AF544 AF544
9 ∆ CYLINDER GASKET 1 AF519A AF519A AF519A AF519A AF519A AF519A AF519A AF521 AF521 AF521
10 CYLINDER 1 AF510 AF510 AF510 AF510 AF510 AF510 AF510 AF509 AF509 AF509
11 ∆ PISTON RING 2 AF527 AF527 AF527 AF527 AF527 AF527 AF527 AF541 AF541 AF541
12 ∆ PISTON SEAL 2 AF526 AF526 AF526 AF526 AF526 AF526 AF526 AF540 AF540 AF540
13 ∆ RIDER RING 1 AF594 AF594 AF594 AF594 AF594 AF594 AF594 AF595 AF595 AF595
14 PISTON ROD ASSEMBLY 1 AF560A AF560B AF560E AF560A AF560F AF560H AF560F AK893B AK893E AK893M
15 COUNTER WEIGHT 1 AF517A AF517B AF517E AF517A AF517D AF517C AF517D AT780B AK780E AK780A
16 FLAT KEY 1 AF524 AF524 AF524 AF524 AF524 AF524 AF524 AB136 AB136 AB136
17 FAN 1 AF533 AF533 AF533 AF533 AF533 AF547 AF547 AF547 AF547 AF547
18 SHROUD 1 AF534 AF534 AF534 AF534 AF534 AF534 AF534 AT343 AT343 AT343
*** TANK ASSEMBLY 1 – AF599 –
AF599AA-1 – AF599 ––––
*** SERVICE KIT 1 K264 K264 K264 K264 K264 K264 K264 K514A K514A K514A
1HAA / 1HAB SERIES
Model 1HAB shown.
*** Item not shown.
∆ Denotes parts included in the Service Kit.
Parts listed are for stock models. For specific OEM models, please consult the factory.
When corresponding or ordering parts, please give complete model and serial numbers.
Please reference the exploded view on the opposite page for the following model and parts table.
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EXPLODED PRODUCT VIEW – MODEL 1HAB
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PARTS & ORDERING INFORMATION
REF DESCRIPTION QTY 1VBF 1VSF 2LBB 2HBB 2HBC 3HBB 3HBE 3LBA 3LBD
1 INLET FILTER ASSEMBLY 1 B300A
2 B300A B300A B300A B300A B300A B300A B300A B300A
2 ∆ FELT 2 B344A B344A B344A B344A B344A B344A B344A B344A B344A
3 SAFETY VALVE 1 – – AS100C AS100G AS100G AS100G AS100G AS100C AS100C
4 CYLINDER HEAD 2 AF508 AF508 AF508 AF508 AF508 AF508 AF508 AF508 AF508
5 ∆ HEAD GASKET 2 AF518 AF518 AF518 AF518 AF518 AF518 AF518 AF518 AF518
6 ∆ OUTLET VALVE 2 AF531 AF531 AF531 AF531 AF531 AF531 AF531 AF531 AF531
7 PLATE VALVE 2 AF529 AF529 AF529 AF529 AF529 AF529 AF529 AF529 AF529
8 ∆ INLET VALVE 2 AF530 AF530 AF530 AF530 AF530 AF530 AF530 AF530 AF530
9 ∆ CYLINDER GASKET 2 AF519A AF519A AF519A AF519A AF519A AF519A AF519A AF519A AF519A
10 CYLINDER 2 AF510 AF510 AF510 AF510 AF510 AF510 AF510 AF510 AF510
11 ∆ PISTON RING 4 AF527 AF527 AF527 AF527 AF527 AF527 AF527 AF527 AF527
12 ∆ PISTON SEAL 4 AF526 AF526 AF526 AF526 AF526 AF526 AF526 AF526 AF526
13 PISTON ROD ASSEMBLY 2 AF560F AF560F AF560B AF560B AF560C AF560B AF560E AF560A AF560D
14 ∆ RIDER RING 2 AF594 AF594 AF594 AF594 AF594 AF594 AF594 AF594 AF594
15 FLAT KEY 1 AF524 AF524 AF524 AF524 AF524 AF524 AH984 AF524 AH984
16 FAN/FAN ASSEMBLY 1 AF533 AF533 AF533 AF533 AF533 AF533 AF547 AF533 AF547
17 SHROUD 1 AF535 AF535 AF535 AF535 AF535 AF535 AF535 AF535 AF535
18 ∆ MANIFOLD SLEEVE 2 AF567A AF567A AF567A AF567A AF567A AF567A AF567A AF567A AF567A
*** SERVICE KIT 1 K260 K260 K260 K260 K260 K260 K260 K260 K260
1VBF – 3LBD SERIES
REF DESCRIPTION QTY 4VCF 4VSF 4HCJ 4LCB 4HCC 5LCA 5HCD 5HCE 6HCN 6HCA
1 INLET FILTER ASSEMBLY 1 B300F
2 B300F B300A B300A B300A B300F B300A B300A B300F B300F
2 ∆ FELT 2 B344A B344A B344A B344A B344A B344A B344A B344A B344A B344A
3 SAFETY VALVE 1 – – AS100G AS100D AS100G AS100E AS100H AS100H AS100H AS100H
4 CYLINDER HEAD 2 AF507 AF507 AF507 AF507 AF507 AF507 AF507 AF507 AF507 AF507
5 ∆ HEAD GASKET 2 AF520A AF520A AF520A AF520A AF520A AF520A AF520A AF520A AF520A AF520A
6 ∆ OUTLET VALVE 2 AF545 AF545 AF545 AF545 AF545 AF545 AF545 AF545 AF545 AF545
7 PLATE VALVE 2 AF543 AF543 AF543 AF543 AF543 AF543 AF543 AF543 AF543 AF543
8 ∆ INLET VALVE 2 AF544 AF544 AF544 AF544 AF544 AF544 AF544 AF544 AF544 AF544
9 ∆ CYLINDER GASKET 2 AF521 AF521 AF521 AF521 AF521 AF521 AF521 AF521 AF521 AF521
10 CYLINDER 2 AF509 AF509 AF509 AF509 AF509 AF509 AF509 AF509 AF509 AF509
11 ∆ PISTON RING 4 AF541 AF541 AF541 AF541 AF541 AF541 AF541 AF541 AF541 AF541
12 ∆ PISTON SEAL 4 AF540 AF540 AF540 AF540 AF540 AF540 AF540 AF540 AF540 AF540
13 PISTON ROD ASSEMBLY 2 AF561F AF561F AF561J AF561B AF561C AF561A AF561D AF561E AF561N AF561A
14 ∆ RIDER RING 2 AF595 AF595 AF595 AF595 AF595 AF595 AF595 AF595 AF595 AF595
15 KEY 1 AB136D AB136D AB136D AB136D AB136D AB136D AB136D AB136D AB136F AB136F
16 FAN/FAN ASSEMBLY 1 AF547 AF547 AF547 AF547 AF547 AF547 AF547 AF547 AF747 AF747
17 SHROUD 1 AF549 AF549 AF549 AF549 AF549 AF549 AF549 AF549 AF656 AF656
18 ∆ MANIFOLD SLEEVE 2 AF567A AF567A AF567A AF567A AF567A AF567A AF567A AF567A AF567A AF567A
*** SERVICE KIT 1 K263 K263 K263 K263 K263 K263 K263 K263 K263 K263
4VCF – 6HCA SERIES
Please reference the exploded view on the opposite page for the following model and parts tables.
Model 1VBF shown.
*** Item not shown.
∆ Denotes parts included in the Service Kit.
Parts listed are for stock models. For specific OEM models, please consult the factory.
When corresponding or ordering parts, please give complete model and serial numbers.
Page 9
EXPLODED PRODUCT VIEW – MODEL 1VBF
Page 10
VBB – PCA-10 SERIES
Models PAB and PBB shown.
** Item not shown.
∆ Denotes parts included in the Service Kit.
Parts listed are for stock models. For specific OEM models, please consult the factory.
When corresponding or ordering parts, please give complete model and serial numbers.
PARTS & ORDERING INFORMATION
REF DESCRIPTION QTY PAB VAB
1 FILTER ASSEMBLY 1 B300A B300A
2 ∆ FELT 1 B344A B344A
3 SAFETY VALVE 1 AS100G –
4 CYLINDER HEAD 1 AF508 AF508
5 ∆ HEAD GASKET 1 AF518 AF518
6 ∆ OUTLET VALVE 1 AF531 AF531
7 PLATE VALVE 1 AF529 AF529
8 ∆ INLET VALVE 1 AF530 AF530
9 ∆ CYLINDER GASKET 1 AF519A AF519A
10 CYLINDER 1 AF510 AF510
11 ∆ PISTON RING 2 AF527 AF527
12 ∆ PISTON SEAL 2 AF526 AF526
13 ∆ RIDER RING 1 AF594 AF594
14 PISTON ROD ASSEMBLY 1 AF560B AF560B
15 PULLEY 1 AB140C AB140C
15A COUNTER WEIGHT 1 AF517B AF517B
16 FLAT KEY 1 AF524 AF524
17 FAN 1 AF533 AF533
18 SHROUD 1 AF534 AF534
*** SERVICE KIT 1 K264 K264
PAB – VAB SERIES
REF DESCRIPTION QTY VBB VCD PBB PCA-10
1 FILTER ASSEMBLY 2 B300A B300A B300A B300F
2 ∆ FELT 2 B344A B344A B344A B344A
3 SAFETY VALVE 1 – – AS100G AS100H
4 CYLINDER HEAD 2 AF508 AF507 AF508 AF507
5 ∆ HEAD GASKET 2 AF518 AF520A AF518 AF520A
6 ∆ OUTLET VALVE 2 AF531 AF545 AF531 AF545
7 PLATE VALVE 2 AF529 AF543 AF529 AF543
8 ∆ INLET VALVE 2 AF530 AF544 AF530 AF544
9 ∆ CYLINDER GASKET 2 AF519A AF521 AF519A AF521
10 CYLINDER 2 AF510 AF509 AF510 AF509
11 ∆ PISTON RING 4 AF527 AF541 AF527 AF541
12 ∆ PISTON SEAL 4 AF526 AF540 AF526 AF540
13 PISTON ROD ASSEMBLY 2 AF560B AF561D AF560B AF561A
14 ∆ RIDER RING 2 AF594 AF595 AF594 AF595
15 PULLEY 1 AB140C AK670 AB140C AK670
16 FLAT KEY 1 AF524 AB136 AF524 AB136
17 FAN 1 AF533 AF547 AF533 AF661
18 SHROUD 1 AF535 AF549 AF535 AF656
19 MANIFOLD SLEEVE 2 AF567A AF567A AF567A AF567A
*** SERVICE KIT 1 K260 K263 K260 K263
Please reference the exploded views on the next page for the following model and parts tables.
Page 11
EXPLODED PRODUCT VIEWS – MODEL PAB (TOP) & MODEL PBB (BOTTOM)
Page 12
PARTS & ORDERING INFORMATION
REF DESCRIPTION QTY 5VDF 5VSF 6LCF ** 6HDK 7LDE 7HDD 7HDE 8HDM 8HDN 8LDF
1 INLET FILTER ASSEMBLY 2 B300F B300F
4 B300F B300A B300F B300A B300A B300F B300F B300F
2 ∆ FELT 2 B344A B344A
4 B344A B344A B344A B344A B344A B344A B344A B344A
3 SAFETY VALVE 1 – – AS100D AS100G AS100D AS100G AS100G AS100F AS100G AS100B
4 CYLINDER HEAD 4/2 ** AF507 AF507 AF507 AF507 AF507 AF507 AF507 AF507 AF507 AF507
5 ∆ HEAD GASKET 4/2 ** AF520A AF520A AF520A AF520A AF520A AF520A AF520A AF520A AF520A AF520A
6 ∆ OUTLET VALVE 4/2 ** AF545 AF545 AF545 AF545 AF545 AF545 AF545 AF545 AF545 AF545
7 PLATE VALVE 4/2 ** AF543 AF543 AF543 AF543 AF543 AF543 AF543 AF543 AF543 AF543
8 ∆ INLET VALVE 4/2 ** AF544 AF544 AF544 AF544 AF544 AF544 AF544 AF544 AF544 AF544
9 ∆ CYLINDER GASKET 4/2 ** AF521 AF521 AF521 AF521 AF521 AF521 AF521 AF521 AF521 AF521
10 CYLINDER 4/2 ** AF509 AF509 AF509 AF509 AF509 AF509 AF509 AF509 AF509 AF509
11 ∆ PISTON RING 8/4 ** AF541 AF541 AF541 AF541 AF541 AF541 AF541 AF541 AF541 AF541
12 ∆ PISTON SEAL 8/4 ** AF540 AF540 AF540 AF540 AF540 AF540 AF540 AF540 AF540 AF540
13 PISTON ROD ASSEMBLY 4/2 ** AF561F AF561F AF561F AF561K AF561E AF561D AF561E AF561M AF561N AF561F
14 ∆ RIDER RING 4/2 ** AF595 AF595 AF595 AF595 AF595 AF595 AF595 AF595 AF595 AF595
15 MANIFOLD 1 AF659 AF659 – AF659 AF659 AF659 AF659 AF659 AF659 AF659
16 SQUARE KEY 2/1 ** AB136F AB136F AB136F AB136F AB136F AB136F AB136F AB136F AB136F AB136F
17 FAN/FAN ASSEMBLY-CCW 1 AF748 AF748 AF748 AF748 AF748 AF748 AF748 AF748 AF748 AF748
18 FAN ASSEMBLY-CW 1 AF747 AF747 AF747 AF747 AF747 AF747 AF747 AF747 AF747 AF747
19 SHROUD 2/1 ** AF656 AF656 AF656 AF656 AF656 AF656 AF656 AF656 AF656 AF656
20 MANIFOLD SLEEVE 2 – – AF567A –––––––
20 MANIFOLD SLEEVE 5 AF567A AF567A – AF567A AF567A AF567A AF567A AF567A AF567A AF567A
21 TANK ASSEMBLY 1 – – AF606-1 AF606-1 AF606-1 AF606-1 – AF606-1 AF606-1 –
22 MANIFOLD 2/1 ** AF550E AF550E AF550E AF550C AF550D AF550B AF550D AF550A AF550A AF550E
*** SERVICE KIT 1 K303 K303 K263 K303 K303 K303 K303 K303 K303 K303
5VDF – 8LDF SERIES
Model 5VDF shown.
** 6LCF is a two-cylinder unit. Other models are four-cylinder units.
*** Item not shown.
∆ Denotes parts included in the Service Kit.
Parts listed are for stock models. For specific OEM models, please consult the factory.
When corresponding or ordering parts, please give complete model and serial numbers.
Please reference the exploded view on the next page for the following model and parts table.
Page 13
EXPLODED PRODUCT VIEW – MODEL 5VDF
Page 14
Gast finished products, when properly installed and operated under normal conditions of use, are warranted by Gast to
be free from defects in material and workmanship for a period of twelve (12) months from the date of purchase from
Gast or an authorized Gast Representative or Distributor. In order to obtain performance under this warranty, the buyer
must promptly (in no event later than thirty (30) days after discovery of the defect) give written notice of the defect to
Gast Manufacturing Incorporated, PO Box 97, Benton Harbor Michigan USA 49023-0097 or an authorized Service
Center (unless specifically agreed upon in writing signed by both parties or specified in writing as part of a Gast OEM
Quotation). Buyer is responsible for freight charges both to and from Gast in all cases.
This warranty does not apply to electric motors, electrical controls, and gasoline engines not supplied by Gast. Gast’s
warranties also do not extend to any goods or parts which have been subjected to misuse, lack of maintenance,
neglect, damage by accident or transit damage.
THIS EXPRESS WARRANTY EXCLUDES ALL OTHER WARRANTIES OR REPRESENTATIONS EXPRESSED OR
IMPLIED BY ANY LITERATURE, DATA, OR PERSON. GAST’S MAXIMUM LIABILITY UNDER THIS EXCLUSIVE
REMEDY SHALL NEVER EXCEED THE COST OF THE SUBJECT PRODUCTAND GAST RESERVES THE RIGHT,
AT ITS SOLE DISCRETION, TO REFUND THE PURCHASE PRICE IN LIEU OF REPAIR OR REPLACEMENT.
GAST WILL NOT BE RESPONSIBLE OR LIABLE FOR INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
however arising, including but not limited to those for use of any products, loss of time, inconvenience, lost profit, labor
charges, or other incidental or consequential damages with respect to persons, business, or property, whether as a
result of breach of warranty, negligence or otherwise. Notwithstanding any other provision of this warranty, BUYER’S
REMEDY AGAINST GAST FOR GOODS SUPPLIED OR FOR NON-DELIVERED GOODS OR FAILURE TO FURNISH
GOODS, WHETHER OR NOT BASED ON NEGLIGENCE, STRICT LIABILITY OR BREACH OF EXPRESS OR
IMPLIED WARRANTY IS LIMITED SOLELY, AT GAST’S OPTION, TO REPLACEMENT OF OR CURE OF SUCH
NONCONFORMING OR NON-DELIVERED GOODS OR RETURN OF THE PURCHASE PRICE FOR SUCH GOODS
AND IN NO EVENT SHALL EXCEED THE PRICE OR CHARGE FOR SUCH GOODS. GAST EXPRESSLY
DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE OR PURPOSE WITH
RESPECT TO THE GOODS SOLD. THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTIONS
SET FORTH IN THIS WARRANTY, notwithstanding any knowledge of Gast regarding the use or uses intended to be
made of goods, proposed changes or additions to goods, or any assistance or suggestions that may have been made
by Gast personnel.
Unauthorized extensions of warranties by the customer shall remain the customer’s responsibility.
CUSTOMER IS RESPONSIBLE FOR DETERMINING THE SUITABILITY OF GAST PRODUCTS FOR CUSTOMER’S
USE OR RESALE, OR FOR INCORPORATING THEM INTO OBJECTS OR APPLICATIONS WHICH CUSTOMER
DESIGNS, ASSEMBLES, CONSTRUCTS OR MANUFACTURES.
This warranty can be modified only by authorized Gast personnel by signing a specific, written description of any
modifications.
WARRANTY
MAINTENANCE RECORD
DATE PROCEDURE PERFORMED
Page 15
MAINTENANCE RECORD
DATE PROCEDURE PERFORMED
Page 16
TROUBLESHOOTING CHART
Low High Pump Motor Excess Reason and remedy
Vacuum Pressure Vacuum Pressure Overheat Overload Noise for problem.
• • • • Filter dirty. Clean or replace.
• At pump • • • Muffler dirty. Clean or replace.
• • • Valves dirty or valves bent.
Clean or replace.
• • • Damaged or worn piston rings.
Repair or replace.
• • • Leaky relief valve.
Inspect and adjust.
• • • Damaged valves.
Replace.
• At pump • • • • Plugged vacuum/pressure line.
Inspect and repair.
• • • • Low voltage, won’t start.
Check power source.
• • • Worn rings/piston hitting cylinder.
Replace.
• • • • Cylinder misadjustment.
Realign.
• • • Leaky hose or check valve.
Replace.
• • • • • Dirt or liquid on top of piston.
Inspect and clean.
• • • Blown head gasket.
Replace.
PART NO. 70 - 2100 G441PL (REV-L)
We have Gast Authorized Repair Facilities throughout the world. For the most
up-to-date listing, contact one of our sales offices below:
World Headquarters
P.O. Box 97
2550
Meadowbrook Rd.
Benton Harbor, MI 49023-0097
Ph: 269/926-6171
FAX: 269/925-8288
www.gastmfg.com
European Sales & Service
Headquarters
Beech House Knaves Beech
Business Centre
Loudwater, High Wycombe Bucks,
England HP10 9SD
Tel: +44 1628 551500
Fax: +44 1628 551590
www.gastmfg.com
Gast Hong Kong
Unit 12, 21/F, Block B
New Trade Plaza
6, On Ping Street, Shatin
N. T. Hong Kong
Ph: (852) 2690 1008
Fax: (852) 2690 1012
www.gasthk.com
ISO 9001 & 14001 CERTIFIED
www.gastmfg.com
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