ACE Controls ACE MLS 64 Installation Instructions

23435 Industrial Park Drive
Farmington Hills, Michigan 48335
tel: [phone]
fax: [phone]

www.acecontrols.com

Air-Oil Tank Installation Instructions

Magnum Group Shock Absorbers

ACE MCA, MCS 33, 36, 45 and 64 Self-Compensating Series
ACE MAA, MAS, MLA, MLS 33, 36, 45 and 64 Adjustable Series

Maximum efficiency of operation can be obtained by
carefully following these instructions:

AIR-OIL TANK INSTALLATION (Figure 1)

Self-compensating models MCA and MCS as well as
adjustable models MAA, MAS, MLA and MLS are
pre-filled with ATF but must be connected to an
air-oil tank before use.
Install the proper ACE air-oil tank as close as possible
to, and physically higher than, the shock absorber. The
line connecting the shock absorber to the air-oil tank
must be free of kinks and loops. The inside diameter
of this line must be equal to, or greater than, that of the
port in the shock absorber.

Do not put a shut-off valve between the shock absorber
and the air-oil tank. Install a check valve in the air line

to the air-oil tank and plug the extra ports of the tank.
Fill the tank with ATF to the fill mark, with the rod
extended, and charge the system to between 50-100 psi
(3.4 - 6.8 bar)

AIR EXHAUST CIRCUIT FOR MODELS MCA, MAA
and MLA SHOCK ABSORBERS (Figure 2)

If the rod is to remain in the shock absorber after
decelerating the load, this type of installation is
necessary. If not built in, a special ACE check valve
should be used to eliminate misting of oil out of the
air-oil tank.

PROPER AIR-OIL TANK SIZE

Refer to the chart below for proper air-oil tank size in
relation to the specific Magnum Group series.

Figure 1

Air-Oil Tank

Plug

Figure 2

Air-Oil Tank

WARNING
Do not use near open flame
contents may be flammable

Do not fill
above this line

Inlet Port

WARNING
Do not use near open flame
contents may be flammable

Do not fill
above this line

Fill Plug

Check Valve

Plug

CV 3/8-F

Free
Flow

Regulator

MA 4550 2

CONTROLS INC.

3-Way Normal
Closed Valve

Sol

Exhaust

Series

33, 36

45
64

Air-Oil Tank

AO-1
AO-1

AO-3

ACE Controls Inc.

World leader in deceleration technology

ISO 9001:2000 Certified

Air-Oil Tank

(Re-circulating Circuit)

AO-3
AO-3

AO-6-91

Supply

Filter/

Regulator

RE-CIRCULATING COOLING CIRCUIT FOR
MODELS MCA, MCS, MAA, MAS, MLA and
MLS (Figure 3)

This type of installation may be required when
ambient temperatures and/or cycle rates cause
the shock absorber to heat up beyond 150 F

0

(65 C).

0

Use high pressure 1,000 psi (69 bar) check valves
with a low cracking pressure of 5 psi (0.34 bar).
If a filter is to be used in this circuit, a 30 to 40
micron filter element with a 5 psi (0.34 bar) by-pass
is recommended. Consult factory for assistance.

LOCK NUT TORQUE SPECIFICATIONS

Refer to the chart below when installing shock
absorber lock nut.

Figure 3

Air-Oil Tank

WARNING
Do not use near open flame
contents may be flammable

Do not fill
above this line

High Pressure
Check Valve

Air Supply

Optional Filter

MA 4550 2

CONTROLS INC.

Model

MC, MA, ML
33, 36 Series

MC, MA, ML
45 Series

MC, MA, ML
64 Series

Torque/Lock Nut

54 - 59 ft-lbs
(74 - 81 Nm)

167 - 183 ft-lbs

(225 - 250 Nm)
560 - 610 ft-lbs
(755 - 830 Nm)

APPL YING APPROPRIATE TORQUE
WITHOUT CALIBRATED TOOLING

The following procedure may be utilized if
calibrated tooling is not available to torque
lock nut.
Note: it is assumed that all necessary
installation instructions have been followed
prior to this procedure.

1. After positioning the shock properly in relation
to the accessory (i.e. flange, collar, etc.) or
mounting surface, with the proper adhesive (if
applicable), finger tighten the lock nut against
the accessory or mounting surface until it can no
longer be turned.

2. Using appropriate equipment, tighten the
lock nut until it rotates 1/8 to 1/4 of a full rotation
(45 to 90 degrees) from the finger tight position.
ACE has determined that a lock nut secured in
this manner meets the torque specifications
listed in the chart above.

Notice

For Magnum Group 33 & 36 models
the torque specification for the male
connector, shipped loose, is 6-10 in-lbs
(0.68 - 1.13 Nm)

Side Port Torque Notice

For Magnum Group 33 & 36 Series

1/8” NPT, Torque 25-30 in-lbs (2.82-3.38 Nm)

For Magnum Group 45 & 64 Series

1/4” NPT, Torque 30-35 in-lbs (3.38-3.95)

ACE Controls Inc.

World leader in deceleration technology

ISO 9001:2000 Certified

ACE Form 17, Air-Oil Tank, Magnum

04/01/2004