M11 – 018-022   Compressed Air System

Specifications

TOC

Holset® SS296/SS296E/QE296 A/C Models

Cylinders 1
Compressor Swept Volume @ 1250 rpm 6.2 L per sec. [13.20 cfm]
Piston Displacement 296 cc [18.06 C.I.D.]
Bore 92.08 mm [3.625 in]
Stroke 44.45 mm [1.750 in]
Speed Engine Speed
Cooling Engine Coolant
Lubrication Engine Lubricating Oil

Plumbing Line Sizes:

Coolant Inlet and Outlet (pipe fitting) 0.375-in NPTF
Air Inlet (inside diameter) 22.22 mm [0.875 in]
Air Outlet (minimum inside diameter) 12.7 mm [0.50 in]
Height, Overall (approximate) 31.1 cm [12.25 in]
Width, Overall (approximate) 14.6 cm [5.75 in]
Length, Overall (approximate) 22.9 cm [9.00 in]
Weight (approximate) 18 kg [40.0 lb]

Holset® SS338/QE338 A/C Models

Cylinders 1
Compressor Swept Volume @ 1250 rpm 7.1 l per sec. [15.0 cfm]
Piston Displacement 338 cc [20.63 C.I.D.]
Bore 98.4 mm [3.875 in]
Stroke 44.5 mm [1.75 in]
Speed Engine Speed
Cooling Engine Coolant
Lubrication Engine Lubricating Oil

Plumbing Line Sizes:

Coolant Inlet and Outlet (pipe fitting) 0.375-in NPTF
Air Inlet 22.22 mm [0.875 in]
Air Outlet 12.7 mm [0.50 in]
Height, Overall (approximate) 31.1 cm [12.25 in]
Width, Overall (approximate) 14.6 cm [5.75 in]
Length, Overall (approximate) 22.9 cm [9.00 in]
Weight (approximate) 18 kg [40.0 lb]

Holset® ST676 A/C Model

Cylinders 2
Compressor Swept Volume @ 1250 RPM 14.2 L per sec. [30.00 CFM]
Piston Displacement 676 cc [41.3 C.I.D.]
Bore 92.08 mm [3.625 in]
Stroke 50.8 mm [2.00 in]
Speed Engine Speed
Cooling Engine Coolant
Lubrication Engine Lubricating Oil

Plumbing Line Sizes:

Coolant Inlet and Outlet (Pipe Fitting) 12.70 mm NPTF [0.50 in. NPTF]
Air Inlet (Inside Diameter) 22.22 mm [0.875 in.]
Air Outlet (Minimum Inside Diameter) 15.88 mm [0.625 in.]
Height, Overall (Approximate) 34.3 cm [13.50 in.]
Width, Overall (Approximate) 17.8 cm [7.00 in.]
Length, Overall (Approximate) 28.7 cm [11.30 in.]
Weight (Approximate) 33.5 kg [74.50 lbs.]

NOTE: In applications where duty cycles average 10 percent or more, or air pressures are above 862 kPa [125 psi], use a discharge line with a minimum inside diameter of 19 mm [0.75 inch] to prevent carbon buildup. Examples of these applications are as follows: refuse trucks, pickup and delivery trucks, transit buses, and equipment with high accessory air usage.

Compressor Spring Force Specifications

    Load Required to Compress Spring to Measurement Length
Spring Part No. Spring Use Approx. Free Length mm [inch] Number of Coils Wire Diameter mm [inch] Measurement Length mm [inch] Minimum kg [lb] Maximum kg [lb]
128080 Exhaust Valve 17.02 [0.670] 3.0 2.03 [0.080] 7.11 [0.280] 3.6 [8.55] 4.7 [10.35
190334 Intake Valve 12.70 [0.500] 2.8 1.58 [0.062] 7.11 [0.280] 0.35 [0.65] 0.5 [1.10
150631 Unloading Valve (naturally aspirated) center unloading valve – twin 41.91 [1.650] 11.5 2.03 0.080 24.89 [0.980] 14.5 [32.00] 17.2 [38.00]
3023101 Unloading Valve (all turbocharged engines) 41.91 [1.650] 10.8 1.65 [0.065] 24.89 [0.980] 5.9 [13.00] 7.7 [17.00]
3049553 E-Type Unloader Valve 41.91 [1.650] 11.25 1.93 [0.076] 24.89 [0.980] 10.4 [23.00] 12.2 [27.00]
800399-XW Unloader 17.02 [0.67] 6 1.04 [0.041] 6.60 [0.260] N/A 2.54 [5.60]
          10.03 [3.95] 1.71 [3.78] N/A
802000-FZ Intake and Exhaust 10.16 [0.40] 4.25 0.79 [0.031] 4.57 [0.18] N/A 0.36 [0.80]
          5.99 [0.275] 0.20 [0.45] N/A
3054489 Exhaust Valve 21.49 [0.846] 4.5 2.54 [0.100] 15.21 [0.599] 3.88 [8.55] 4.74 [10.45]

Last Modified:  10-May-2007