Usage:
928G (6XR, 7SR) Wheel Loaders IT28G (8CR, 9AR) Intergrated Toolcarriers.
Reference: SENR1215; Service Manual, 928G Wheel Loader & IT28G Integrated Toolcarrier; SENR1214, March, 1997; Disassembly & Assembly; 3116 Engine Supplement For IT28G Integrated Tool Carrier & 928G Wheel Loader; Alternator; Page 17: Damper & Pulley Assembly; Page 32.
Reference: SENR3582-06; December 1995; Specifications; Basic Engine Components; 3114, 3116, 3126 Engines; Cooling System; Belt Tension Chart, Page 22.
In applications where a machine runs at low idle for long periods of time with an electrical component activated (cab heater/blower On, lights On), the alternator not be able to keep the battery charged.
The 156-3870 Alternator and 156-3869 Damper and Pulley are available. The 156-3870 Alternator replaces the 117-8280 Alternator. The 156-3869 Damper and Pulley repalces 117-8272 Damper and Pulley.
These groups increase the alternator output at low idle by increasing the speed at which the alternator rotates. Machines in the field can be converted to the new design. This modification requires that the crankshaft pulley and alternator pulley be replaced.
The parts needed to convert the former alternator are listed in Chart 1. Refer to Page 17 in SENR1214 for the disassembly and assembly procedure for the alternator. Refer to SENR3582-06, Page 22 for the Belt Tension Chart.
Illustration 1.
View of 117-8280 Alternator. See Chart 1.
Illustration 2.
View of 156-3869 Damper and Pulley. See Chart 2.
The parts needed to convert the former damper group are listed in Chart 2. The 7C-1631 Damper Assembly (1) is on the machine and will be used with the conversion parts. Refer to Page 32 in SENR1214 for the disassembly and assembly procedure for the damper and pulley assembly.
