4–9
VENT ASSEMBLY. See figure 4–2. Model 53029A–20
a.
Disassemble
(1) Disconnect female Coupl
ing outward on cam arms
adapter. Remove gasket from female coupling.
ing from flanged adapter by pull–
. Lift female coupling from
(2) Remove vent standpipe from coupling by turning counter-
clock wise.
(3) Separate relief valve from valve vent standpipe by turn–
ing valve counterclockwise.
(4) Using wrench,
remove bolts and washers. Lift flanged
adapter from tank fitting.
(5) Remove O-Ring from groove in tank fitting.
b. Repair and Replacement
(1) Clean all parts by wiping with a cloth.
(2) Inspect all parts for cracks, dents, breaks, or wear. If
any parts are no longer serviceable, replace before
reassembly.
(3) Check that vent hole in relief valve is clear.
VENT ASSEMBLY. See Figure 4–2.1 Model 53029B–20
a.
Disassembly
(1) Separate relief valve from flanged standpipe by turning
valve counterclockwise .
(2) Using wrench,
remove bolts and washers.
(3) Remove O–Ring from groove in tank fitting.
b.
Repair and Replacement
(1) Clean all parts by wiping with a cloth.
(2) Inspect all parts for cracks, dents, breaks, or wear. If
any parts are no longer serviceable, replace before
reassembly.
(3) Check that vent hole in relief valve is clear.
4–12 Change 1
