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Oil Drain Line (On models w hich have an
external drain - see compr essor illustration
on front)
A. Check for contamination or restrictions. The drain line must
be 1/2 inch ID Minimum from the compressor to the engine
crankcase. The line should have no bends, less than a two inch
radius, be free of traps, have a continuous downward flow and
enter the engine above the engine oil level. The compressor
drain should not be connected to any other oil drains which could
restrict the flow of oil out of the compressor . Check the mating
oil drain hole in the engine flange for contamination or restrictions
on internally drained models.
Compressor Mounting Surface
A. Clean the mounting surface. Use the gasket provided with
the replacement compressor. Use gasket sealant sparingly.
Care should be taken so no gasket sealant plugs the oil entry or
oil drain. NOTE: Excessive gasket sealant which plugs or
restricts either the oil feed or drain voids any warranty or
progressive damage claim.
Compressor Mounting (Flange Mounted
Compressors)
A. Inspect drive hub and coupling for wear or damage. Replace
if necessary. Install compressor and check for proper alignment
before bolts are drawn tight.
Compressor Mounting (Base Mounted
Compressors)
A. Inspect pulley for wear or damage. Replace if necessary .
Install compressor and check for proper alignment.
CAUTION The maximum drive belt radial force is 240 lbs.
!
Air Discharge Line
A. See front side for Haldex recommendations. The line must be
.547 inch ID Minimum, show no bends smaller than a two inch
radius, be free of traps and slope downward toward the air
reservoir or air dryer.
Air Inlet
A. The compressor should never be used without an inlet filter .
A dirty or restricted filter will af fect performance and cause the
compressor to pass an excessive amount of oil. The maximum
inlet restriction with the compressor running at 2400 rpm and
pumping to atmosphere is 20 inches of water . If intake vacuum
exceeds 20 inches of water, the intake filter must be changed.
Haldex compressors in the EL or EL(X) series may be
supercharged up to 35 psi inlet air pressure. W arranty is given
in supercharged service for all compressors in the EL or EL(X)
series.
Filter Incoming Air to 40 Micr ons Maximum
A. Clean air is necessary to prevent excessive cylinder and
ring wear. It is also necessary for operation of brake valves
operating under close clearances.
Drive System
A. The compressor installation and drive system has an
influence on compressor life. The compressor is designed to
operate with certain speeds and mountings. If the operating
speed is too slow, insufficient air supply may result. On the
other hand, a very high speed will shorten compressor life.
Use the following information as a guide when installing an
EL1300, EL1600 or EL3200 Compressor:
Maximum Allowable Compressor Speed
Maximum Radial Force On Crankshaft
Maximum Pulley Offset
Excessive force on the crankshaft could result in short bearing
life and a broken crankshaft.
Governor Mounting
A. Inspect the reservoir to governor line. The line must
be free of contamination and kinks. CAUTION: The exhaust
port of any governor must be open to the atmosphere. If the
reservoir to governor line is too short, use kit SN401 1F (this
will add eight inches to the line).
Governor Mounting (continued)
B. Keep Governor as Close to Compressor as Possible.
The line between compressor governor and unloader must not be
greater than 5/16 inch ID or longer than five feet. Erratic governor
performance may result when the discharge line is beyond those
limits.
C. Keep Governor Away from Engine Hot Spots. Excessive
heat is detrimental to the rubber seals in the governor; therefore,
some thought should be given as to its location. This also applies
when mounting the governor to the compressor - the governor
should be placed as far from the compressor discharge as
possible.
D. Governor Supply Line Must Be 1/4 Inch ID Minimum. When
the governor opens, air passes through the governor and fills the
unloader pins cutting out the compressor. If the governor supply
line is restricted, a pressure loss at the governor supply may close
the governor valve and exhaust the air in the unloader . As soon as
pressure builds up again at the governor, it will reopen. This cycle
will continue at a high rate. To avoid this "flutter" condition, the
governor line should be at least 1/4 inch ID and should not be
restricted by fittings or sharp bends.
It is also recommended that this line be as short as possible and
be independent from other accessories requiring a supply of air
Reservoir Drains
3000 rpm
A. Close before starting engine.
240 lbs.
3 inches
Start Engine
A. Inspect installation for air pressure, coolant or oil leakage.
Listen for any noise which may indicate loose mounting or
poor drive gear alignment.
Governor Function
A. Build up air system. Observe cut out pressure (maximum
system pressure), "pump" foot control valve until compressor
starts pumping again (minimum system pressure). The most
common pressure range is 105 to 125 psi. Your fleet may
require different pressure levels which can be adjusted by
changing the governor setting.
North American Sales Division
Haldex Brake Products Corporation
Rev. 1/02 5M ART L31050W
Commercial Vehicle Systems
North American Sales Division
Haldex Limited
10707 NW Airworld Drive
525 Southgate Drive, Unit 1
Kansas City, MO 64153-1215
Guelph, Ontario Canada N1G 3W6
Phone: 816-891-2470
Phone: 519-826-7723
Fax: 816-880-9766
Fax: 519-826-9497
www.haldex.com · www.hbsna.com
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