Gast PCD - Manual (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.