ACE Controls 4"" Bore Self-Compensating Installation Instructions

Installation Instructions

4” Bore Self-Compensating Shock Absorber

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

www.acecontrols.com

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

GENERAL

Install the ACE Self-Compensating Shock (Figure 1)
on a surface of sufficient strength. Align the shock
absorber rod end button with the load striking surface.
This avoids side loading (5 degrees maximum). Use the
full stroke of the shock absorber up to and including an
additional .03 inch (0.8 mm) and provide a solid
mechanical stop to prevent bottoming out. To allow
maximum heat dissipation, DO NOT PAINT THE SHOCK
ABSORBER. If necessary, guard the shock absorber to
protect it from foreign materials such as acids, steam,
weld flash, etc. Applications using two or more self­compensating shocks should have the load balanced
between them equally.

SELF-CONTAINED MODEL INSTALLATION

All standard 4” bore self-compensating shocks are
prefilled with ATF oil and are ready for use after proper
installation.

AIR-OIL TANK INSTALLATION

Models CAA and CSA 4” bore self-compensating
shocks are prefilled with ATF oil but, MUST BE
CONNECTED TO AN AIR-OIL tank before use. Install
(Figure 2) 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 must be equal to, or greater than,
that of the port in the shock absorber. Do not put a shut
off valve or check 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 oil (taking care to avoid overfilling)
and charge the system to between 50 - 100 psi.

Figure 1

Figure 2

Figure 3

Welded Key

Front Flange

Solid Mechanical Stop

Check Valve

Air-Oil Tank

Inlet Port Bleed Port

1.50” Minimum

Load

Nominal

Stroke

+.03

Pressure
Regulator

Free Flow

SIDE FOOT MOUNTING INSTALLATION

Bolt the shock absorber (Figure 3) to the mounting
structure using bolts listed. Be sure to securely tighten
the bolts. PLACE A KEY BEHIND THE REAR FOOT
BAR TO PREVENT MOVEMENT OF THE SHOCK
ABSORBER.

ACE Controls Inc.

World leader in deceleration technology

ISO 9001:2000 Certified

Solid Mechanical Stop

Bore

4
4

Bolt Size

(4) 1.00
(4) 1.00

Air-Oil Tank

AO-81

AO-82

CLEVIS MOUNTING INSTALLATION

Fasten the rear clevis and the rod clevis (Figure 4) to
the mating clevis members of the equipment. Make
sure the shock absorber is using the full stroke plus
.03 in (0.8 mm) and is not bottoming out. Be sure
that the equipment cannot pull the rod out any further
than the shock absorber stroke will allow.

AIR EXHAUST CIRCUIT FOR MODEL
CAA SHOCK ABSORBER

This type of installation (Figure 5) is necessary when
it is desired to have the rod remain in the shock
absorber after decelerating the load. Use special care
to avoid overfilling the air-oil tank. If not built in, a
special ACE check valve should be used to eliminate
“misting” of oil out of the air-oil tank.

RE-CIRCULATING COOLING CIRCUIT FOR MODELS
CAA & CSA SHOCK ABSORBERS

This type of installation (Figure 6) may be required when
ambient temperatures and/or cycle rates cause a self
contained shock to heat beyond 200 F. Use high pressure

0

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

PRIMARY MOUNTING INSTALLATIONS

Install the ACE self-compensating shock on a surface of
sufficient strength. Align the shock absorber rod end
button with the load striking surface and the bleed screws
and/or ports pointing up if mounted horizontally. Tighten
the (6) 5/8-18 UNF screws securely (Figure 7).

Figure 4

Figure 5

Air-Oil Tank

Figure 6

Air-Oil Tank

3-Normally

Closed Valve

Special ACE
Check Valve

Sol

Exhaust

Supply

Filter/Regulator

Air Supply

Optional Filter

ACE Controls Inc.

World leader in deceleration technology

ISO 9001:2000 Certified

High Pressure Check Valve

Figure 7

(6) 5/8-18 UNF

ACE Form24, 4” Bore Sel-Comp.

04/01/2004