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Standard

Heavy Truck and Bus Retarder Downhill Performance Mapping Procedure

2000-05-01
CURRENT
J1489_200005
The procedure covers the estimation of the total retardation capability available to a specific vehicle from: a Natural retardation (rolling resistance, aerodynamic drag, etc). b Engine drag c Engine, integral automatic transmission, driveline or trailer-axle retarders It assumes that foundation brakes are not used for maintaining speed on long mountain descents. Retardation is rated in terms of the maximum grades on which stable control speeds can be maintained for each gear over the range of highway speeds appropriate to that gear. For each gear, the calculation procedure determines maximum grades for at least four values of control speed ranging from the vehicle velocity corresponding to full load governed engine rpm, to the vehicle velocity corresponding to the engine rpm at minimum (idle) speed. In addition, the calculation procedure provides information on the total retarding power available for each gear.
Standard

Torque Ratings for Power Take-off Mounting Pads

2017-09-19
CURRENT
J2662_201709
This SAE Recommended Practice is intended to serve as a reference for the amount of torque that a Power Take-Off can induce on the transmission mounting pad. This document will apply to six-bolt, eight-bolt, and rear mounted power take-offs.
Standard

Torque Ratings for Power Take-off Mounting Pads

2003-07-25
HISTORICAL
J2662_200307
This SAE Recommended Practice is intended to serve as a reference for the amount of torque that a Power Take-Off can induce on the transmission mounting pad. This document will apply to six-bolt, eight-bolt, and rear mounted power take-offs.
Standard

Hydraulic Hybrid Terminology and Definitions

2012-11-21
CURRENT
J2898_201211
As the number of Hydraulic Hybrid Powertrain equipped motor vehicles has increased, the number of terms, abbreviations, and acronyms which describe various components of these systems has increased. For the sake of industry standardization and to bring some order to the proliferation of such terms, abbreviations, and acronyms, the SAE Truck and Bus Hydraulic Hybrid committee prepared this document.
Standard

Recommended Practices for CNG Powered Medium and Heavy-Duty Trucks

2018-02-12
CURRENT
J2406_201802
This SAE Recommended Practice provides guidance for the construction, operation, and maintenance of CNG powered medium and heavy-duty trucks. The intent of this document is to cover TRUCKS (6350 kg (14 001 gvw pounds) and above) and specifically excludes passenger vehicles such as: buses, recreational vehicles, motor homes and/or passenger vehicles which may incorporate a truck chassis in their construction.
Standard

Recommended Practices for CNG Powered Medium and Heavy-Duty Trucks

2002-03-13
HISTORICAL
J2406_200203
This SAE Recommended Practice provides guidance for the construction, operation, and maintenance of CNG powered medium and heavy-duty trucks. The intent of this document is to cover TRUCKS (6350 kg (14 001 gvw pounds) and above) and specifically excludes passenger vehicles such as: buses, recreational vehicles, motor homes and/or passenger vehicles which may incorporate a truck chassis in their construction.
Standard

Openings for Six- and Eight-Bolt Truck Transmission Mounted Power Take-Offs

2017-11-03
CURRENT
J704_201711
The accompanying mounting and gear locations are applicable for all general installations of power take-off on the transmission gear box of motor trucks and tractors where the size of the transmission permits. The heavy-duty type opening can be adapted to the regular-duty type by the use of an adapter with 6.35 mm (0.25 in) flange thickness with appropriate bolt pattern and thread engagement. (See Figures 1 and 2.)
Standard

Openings for Six- and Eight-Bolt Truck Transmission Mounted Power Take-Offs

2000-09-07
HISTORICAL
J704_200009
The accompanying mounting and gear locations are applicable for all general installations of power take-off on the transmission gear box of motor trucks and tractors where the size of the transmission permits. The heavy-duty type opening can be adapted to the regular-duty type by the use of an adapter with 6.35 mm (0.25 in) flange thickness with appropriate bolt pattern and thread engagement. (See Figures 1 and 2.)
Standard

Certificates of Maximum Net Horsepower for Motor Trucks and Truck Tractors

1998-11-06
CURRENT
J690_199811
[In the report of the SAE Motor Truck Rating Committee on Ability Ratings published in the January 1940 issue of the SAE Journal, it was recommended that pounds per certified net brake horsepower delivered to the clutch or its equivalent be used as the index of the potential ability of a motor truck or combination. This report defined the term "certified net brake horsepower" in detail and recommended that certain data be provided to support the certification. The accompanying forms provide a method for the presentation of the data specified.]
Standard

Truck Ability Prediction Procedure

1997-02-01
CURRENT
J688_199702
The procedure has been developed to provide a practical method for the prediction of truck performance using accepted data. It Is designed to help anyone concerned with the problem of truck selection. By following directions, it is possible to determine the necessary information for intelligent truck selection without being concerned with the origin or derivation of the complex factors involved. With readily available specification of a truck, information provided in the tables, and minimum of calculation, it is possible to predict: (a) The performance obtainable from a truck of given characteristics under given operating conditions. (b) The characteristics required in a truck to meet different performance requirements under given operating conditions. This report comprises a procedure form and 10 tables of data.
Standard

SAE Nodal Mount

2017-08-14
CURRENT
J1134_201708
This SAE Recommended Practice establishes a single bolt pattern for the No. 1 clutch housing (see Figure 1) and the No. 2 clutch housing (see Figure 2). These four bolt patterns are designated to give commonality of mounting brackets in existing frame rails. The 420 mm (16.5 in) span, pad face to pad face, allows the ease of installation in existing frame rail widths. This is also the minimum spacing which will accommodate commonly used clutches.
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