AIR N ARC
®
200 SERIES ALL-IN-ONE POWER SYSTEM
®
SECTION 6: MAINTENANCE
090019-OP_r0
PAGE - 69
should depress with little force and spring
back.
13. Replace the tee: coat the threads with pipe
sealant
.
14. Replace the copper valve tubing [
A
] into
position on the tee [
B
] and tighten.
6.5.3.2 LOW PRESSURE VALVE REPLACEMENT
Refer to
Figure 6-4
for low pressure valve assembly.
1. Locate the low pressure unloader valve [
A
] as
indicated in
Figure 6-3
.
2. Remove the copper tubing [
A
] connected to
the tee on the top of the low pressure
unloader valve [
C
].
3. Remove the tee [
B
] connected to the upper
cover
4. Remove the two (2) 5mm capscrews [
D
] and
spring washers [
E
] securing the upper cover
[
F
] in place.
5. Remove the valve assembly, which consist of:
• Upper cover gasket [
G
]
• Unloading piston [
H
]
• Viton o-ring [
J
]
• Unloading spring [
K
]
• Unloading cylinder [
L
]
• Lower unloader gasket [
M
]
• Unloading fork [
N
]
• Washer [
P
]
• Bolt [
Q
]
TOOLS/ITEMS NEEDED
REPLACEMENT
PART(S)
Hex Head Key (5mm)
Low Pressure Valve
Assembly
Replacement Kit No.
RC46552
Screw Driver (Small)
ISO68 Compressor Oil (To
lubricate the gaskets)
Pipe Sealant
WARNING
Relieve pressure from the compressor
system before performing maintenance
on any components.
WARNING
Before performing maintenance or repair
operations on the machine, ensure that
all power has been removed and locked
out to prevent accidental start-up.
TABLE 6A: BOLT TORQUES FOR COMPRESSOR
HEAD BOLTS
CYLINDER-CASE
ROD BOLTS
FRONT COVER
REAR COVER
SIZE
BOLT
TORQUE
SIZE
BOLT
TORQUE
SIZE
BOLT
TORQUE
SIZE
BOLT
TORQUE
SIZE
BOLT
TORQUE
CM-FT
CM-FT
CM-FT
CM-FT
CM-FT
M10-1.5 320-23.1 M10-1.5 280-20.25 M8-1.25 280-20.25 M10-1.5 300-21.7 M8-1.25 300-21.7
