SEAL-RING 9X3970 - Caterpillar

Engine Commercial G3500 FamilyIntroduction
The fumes disposal filter separates oil from the crankcase atmosphere.The filter has a blower that draws the crankcase atmosphere through the breathers on the side of the engine. Large droplets of oil are trapped by the breathers. The oil in the breathers is returned to the crankcase. Small particles of oil are still entrained in the atmosphere.
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Operation of the fumes disposal filter
(1) Flow of the crankcase atmosphere
(2) Flow of the air to the turbocharger (optional)
(3) Flow of the oil that is separated from the crankcase atmosphere
(4) Bypass portAtmosphere (1) is drawn into the fumes disposal filter. The filter separates the oil from the crankcase atmosphere. The oil (3) is returned to the oil pan. Clean air (2) is sent to the air inlet of the turbocharger or other location as required by local or Cat regulations for specific products.If power to the blower is lost during engine operation, the crankcase atmosphere is purged through bypass port (4).The fumes disposal filter provides the following benefits:
Reduction of pollution
Compliance to government regulations of emissions
Reduction of oily residue on surfaces
Economical recirculation of oil that would otherwise be lost
Low maintenanceTwo different fumes disposal filters are available. The operation of the devices is identical.
The 191-2303 Fumes Disposal Filter Gp is used with a single engine.
The 191-2304 Fumes Disposal Filter Gp has a greater capacity. This filter is used with tandem engine installations.Note: The air lines, the line for the bypass, and the fittings are supplied by the customer.Do not perform any procedure in this Special Instruction until you read this information and you understand this information.Components and Reference Dimensions
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Components of the 191-2303 Fumes Disposal Filter Gp and the 191-2304 Fumes Disposal Filter Gp
(1) Differential pressure gauge
(2) Blower and motor
(3) Silencer and air outlet
(4) Filter element
(5) Bracket with mounting holes
(6) Oil drain
(7) Condensation trap drain valve
(8) Bypass port
(9) Inlet for the fumes disposal filter
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Reference dimensions of the 191-2303 Fumes Disposal Filter Gp
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Reference dimensions of the 191-2304 Fumes Disposal Filter Gp
Installation
Note: The air lines, the line for the bypass, and the fittings are supplied by the customer.Do not install the filter on the engine. Ensure that the filter is isolated from engine vibration.The location of the filter depends on the model that will be installed. The filter must be within the specified distance from the engine to eliminate excessive pressure drop.
Install the 191-2303 Fumes Disposal Filter Gp within 15 m (50 ft) of the engine.
Install the 191-2304 Fumes Disposal Filter Gp within 7.5 m (25 ft) of the engine.Before you install the unit, remove the cover and install the loose shipped filter element. Make sure that the element is properly seated in the body. Reinstall the cover.
Attach suitable straps and a lifting device to the filter.
The 191-2303 Fumes Disposal Filter Gp weighs approximately 58 kg (128 lb).
The 191-2304 Fumes Disposal Gp weighs approximately 86 kg (190 lb).
Illustration 5 g00767140
The minimum distance from the engine oil level to the bottom of the filter is 1.5 m (5 ft).
(1) Bracket
Lift the filter