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CYLINDER HEAD AND VALVES MODEL 20-904
ASSEMBLY - TM-5-4310-362-140079

TM-5-4310-362-14 Compressor Reciprocating Air: Electric Motor Driven 5 CFM 175 PSI Model 20-904 Manual
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TM 5-4310-362-14
CYLINDER HEAD AND VALVES MODEL 20-904 (Cont)
LOCATION/ITEM
ACTION
REMARKS
9.
High pressure holddown
Remove
HIGH PRESSURE
covers (21)
DISCHARGE
10. Gaskets (22)
Remove
11. Seats (26) and retainers
Turn counterclockwise using
(23)
seat tool (16869) and retainer
tool (16870).
12. Spring (24) and plate (25)
Lift out of cylinder head.
13. Gasket (27)
Remove
8-12.
CLEANING, INSPEC-
LOW PRESSURE
TION AND REPAIR
1.
Cylinder head (30)
a. Clean, especially area between
cooling fins.
b. Remove gasket material stuck
to bottom of head.
2.
Valve parts
WARNING
Wear gloves or other skin
protective equipment when
working with cleaning
solvents.
Clean with cleaning solution.
3.
Valve plates and seats
a. Inspect for wear and flatness.
(10, 11, 18, 19,25 and
b. Resurface with No. 400
26)
emery cloth if wear is slight.
c. Replace if they can't be
resurfaced.
Valve seats must be flat and smooth.
4.
Valve springs (9, 17 and
a. Inspect for cracks or loss of
24)
elasticity.
b. Replace if cracked.
5.
Gaskets and O-rings (3,
a. Inspect for cracking, cutting
12, 22 and 27)
or other conditions which
might cause leaks.
b. Replace if damaged.
Change 1 8-13






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