GM Gasoline V6 90 Degree - Manual (Page 28)

ENGINE APPLICATION MANUAL GM Powertrain
Gasoline 4.3L V6 90 Degree Revised: 08/15/2000
File: c:\data\manuales\v6-truck\am43v6#3.doc
Contact:Luis Nespolo - (248) 857-1558 Printed: 8/15/00 26
3.1.10 Accessory Drive System
The engine is released with an accessory drive system whose components are dimensioned
and released as indicated in the paragraphs 3.1.11 to 3.1.16.
The maximum torque from the front crankshaft pulley is 150 ft lb., regardless of the engine
speed; so it is recommended that the Belt System Drive maximum Torque requirement not to
exceed 140 ft lb.
For torque values above 140 ft. lb. the customer shall provide different PTO assembly.
3.1.11 Standard Accessory Descriptions
GMPT accessory drive design release engineer will provide attachment points and drive of these
components on the engine.
The following table 3.1.11-I shows the different combinations of components coupled to the L35
engine accessory drive brackets per GM platforms.
3.1.12 Cooling Fan
Cooling Fan assembly is not part of the engine scope or extent of supply.
Cooling fan is designed, dimensioned and released by the GM - HVAC engineering group taking
in consideration the Heat Rejection (indicated in the paragraph 3.4.5) needed to evacuate from
the engine through the radiator assembly.
If the Fan is driven from the crankshaft front pulley and the maximum torque values specified in
paragraph 3.1.10 shall be taken in consideration.
3.1.13 Alternator
Alternator is not part of the engine scope or extent of supply.
Alternator is designed, dimensioned and released by the GM - Electrical engineering group
taking in consideration all vehicles electrical power needs.
If the alternator is driven from the crankshaft front pulley and the maximum torque values
specified in paragraph 3.1.10 shall be taken in consideration.
3.1.14 Power Steering Pump
Power Steering Pump is not part of the engine scope or extent of supply.
Power Steering Pump is designed, dimensioned and released by the GM - Chassis engineering
group taking in consideration the vehicles drive needs.
If the power steering pump is driven from the crankshaft front pulley and the maximum torque
values specified in paragraph 3.1.10 shall be taken in consideration.
3.1.15 AC Compressor
AC Compressor assembly is not part of the engine scope or extent of supply.
AC Compressor is designed, dimensioned and released by the GM - HVAC engineering group
taking in consideration the Vehicle Air Conditioned needs.
AC Compressor is driven from the crankshaft front pulley and the maximum torque values
specified in paragraph 3.1.10 shall be taken in consideration.
3.1.16 Crank Shaft Nose Load
Crankshaft maximum load at the nose will not exceed 140 Lbs.