Airmax SilentAir G75 User manual

INSTALLATION MANUAL
Item #510512
SilentAir™G75
(RP75 72R)
Maintenance Kit
Important Information .................. 2
Product Contents ........................ 2
Installation Instructions.................3-7
Changing the Air Filter ................... 8
Notes .................................. 8
Table of Contents:

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IMPORTANT INFORMATION:
Please read these instructions thoroughly before use. Failure to follow instructions may
result in equipment damage or failure, losses, injury or death.
WARNING:
To reduce the risk of electric shock or injury:
• ALWAYS unplug the compressor from power source and remove pressure from
airlines before installing the maintenance kit.
IMPORTANT: Airmax® is not responsible for equipment damage or failure, losses,
injury or death resulting from failure to follow safety precautions, misuse or
abuse of equipment.
2
PRODUCT CONTENTS:
C
E
D
FG
A
B
A2 Valve Plates with Pre-Installed
Leaf Valves
B2 Head O-Rings
C2 Cylinder Sleeves
D2 Piston Cups
E2 Cylinder O-Rings
F8 Screws (4 have the Torx Head)
G4 Tube O-Rings
HPinch Clamp (Included in case of
pinch clamp failure)
What’s Included:
H
2

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Step 1
Remove the air lter from the valve plate
using a 5/8” wrench. Be sure to take note
of where the air lter is installed on the
valve plate in relation to the capacitor on
the compressor.
INSTALLATION INSTRUCTIONS:
T25 Torx Wrench
T20 Torx Wrench or
1/8” Allen Wrench
5/32” Allen Wrench
1/4” Allen Wrench
1/2” Wrench
5/8” Wrench
Pick Tool
Pipe Joint Compound or
Teon Tape
Tools Required:
Step 2
Using a 1/4” Allen wrench, remove the two
1/4” pipe plugs, noting their location on the
valve plate.
Step 3
Using a 5/32” Allen wrench, remove the two
screws holding down the manifold.
Step 4
Remove and save the two spacers underneath
the manifold.
î
See Video Instructions of the G75 (RP75 72R)
Maintenance Kit installation online at
airmaxeco.com/InstallRP75

airmaxeco.com | 866-424-7629
airmaxeco.com | 866-424-7629
4
Step 5
Remove the brass 90 degree tting from the
valve plate using a 1/2” wrench. For ease of
tting removal, the pinch clamp and ex tube
can be removed from the brass barb.
Step 6
Use a 5/32” Allen wrench to remove the
remaining six screws on the top of the head
assembly.
Step 7
Separate the heads from the head assembly
and set aside. Take note of the positions of
the leaf valves in relation to the capacitor.
This will be important when reinstalling the
new valve plates.
Step 8
Separate the old valve plate from the
valve tubes.
Step 9
Remove the tube o-rings with a small pick
tool and install the new ones from the
maintenance kit. Then rmly place the new
valve plate onto the valve tubes.

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Step 10
Repeat steps 8 and 9 for the second
valve plate and set the valve plate
assembly aside.
Step 11
Depending on which screws are installed on
your unit, use either a T20 Torx wrench or 1/8”
Allen wrench to remove the two set screws
on the piston retainer plate for each cylinder.
Step 12
Remove and discard the worn cylinder
sleeves and piston cups. Place a retainer plate
on top of one of the new piston cups making
sure that the lip of the piston cup faces up.
Step 13
Place the retainer plate and piston cup onto
the cylinder sleeve. Firmly push the retainer
plate into the sleeve. Flip over to ensure the
piston cup is evenly aligned.
Step 14
Place the cylinder sleeve into the grooves
on top of the compressor body and align
the retainer plate holes. Use two new screws
supplied with the maintenance kit to reinstall
the piston cups. Be sure to use the same type
of screws that were originally installed on
the compressor (Recommended Torque:
34-38 in lb).
Cylinder Sleeve
Piston Cup

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6
Step 15
Repeat steps 13 and 14 for the second cylinder.
Step 16
Flip the valve plate over and install the new
cylinder o-rings.
Step 17
Install the valve plate onto the cylinder
sleeves ensuring the leaf valves are pointing
away from the capacitor. Push down rmly to
secure in place.
Step 18
Install the two new head o-rings from
the maintenance kit onto the top of the
valve plate.
Step 19
Align the head covers on top of the valve
plates. Match the grooves in the head to the
grooves in the valve plate. Not doing so will
damage the leaf valves.

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Step 20
Install the six screws to secure the head covers
on the valve plates. Leave the inner two screw
holes open. We recommend going back and
forth between screws to ensure the screws are
securely in place. Be sure not to over tighten
(Recommended Torque: 47-50 in lb).
Step 21
Reinstall the brass 90 degree tting attached
to the manifold hose. If the ex tube was
disconnected from the barb, reinstall with the
new pinch clamp. It is recommended to use
Pipe Joint Compound or Teon Tape when
reinstalling. Be sure to position the 90 degree
tting pointing away from the capacitor and
tighten with a 1/2” wrench.
Step 22
Reposition the two spacers onto the two
remaining holes in the head assembly.
Then reinstall the manifold using the two
remaining screws. Tighten down the screws
using a 5/32” Allen wrench. Be sure to go back
and forth to ensure the screws are securely
in place.
Step 23
Reinstall the two 1/4” pipe plugs, using Pipe
Joint Compound and a 1/4” Allen wrench. It
is important that the plugs are reinstalled in
their original valve plate holes.
Step 24
Reinstall the air lter onto the last valve plate
hole using a 5/8” wrench, again using Pipe
Joint Compound.

8
Changing the Air Filter:
NOTES
Changing the air lter should be done every 3-6 months
To replace the air lter, hold the base of the air lter and turn the top
counterclockwise to remove the air lter cap. Replace the old air lter
element with a new one.
#510522 V2.1
THANK YOU FOR CHOOSING:
Airmax, Inc.
15425 Chets Way Street
Armada, MI 48005
866-424-7629
www.airmaxeco.com