873078 Reversing gear Volvo.Penta
MD2010-C; MD2010-D; MD2020-C, MD2010A; MD2020A; MD2030A, MD2010B; MD2020B; MD2030B, MD22A; MD22A-A; MD22L-A, MD22L; MD22P; MD22L-B
Reversing
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Compatible models:
Volvo Penta entire parts catalog list:
- Connecting Components for MS2A-E, MS2L-E: A » 873078
- Connecting Components for MS2A-E, MS2L-E: B
- Reverse Gear: MS2A-E, RATIO 3.0:1
MD2010B; MD2020B; MD2030B; MD2040B; MS2L-D; MS2A-D; 120S-D; MS2B-R; MS2A-E; MS2L-E
MD22A; MD22A-A; MD22L-A; TMD22A; TMD22-A; MS2B-A; MS2B-R; MS2A-E; MS2B-L; MS2L-E; 120S-E; MD22; MD22L
MD22L; MD22P; MD22L-B; MD22P-B; TMD22-B; TMD22P-C; TAMD22P-B; HS25A; HS25A-B; 120S-E; MS2A-E; MS2L-E; MS2B-L; TMD22B
Information:
Table 1
Typical Configuration Parameters    
Parameter    Programmability    
Air shutoff (ON/OFF)     Yes    
Crank duration     Yes    
Crank terminate speed     Yes    
Cold cylinder cutout     Yes    
Cooldown speed     Yes    
ECM serial number     No    
Engine acceleration rate     Yes    
Engine cooldown duration     Yes    
Engine cooling system configuration (1)     Yes    
Engine prelube duration     Yes    
Engine rated speed     Software dependent    
Engine rotation     Software dependent    
Engine serial number     Yes    
Equipment ID     Yes    
Ether control (ON/OFF)     Yes    
Fuel correction factor     Yes    
Fuel ratio control offset     Yes    
Low idle speed     Yes    
Maximum number of crank cycles     Yes    
Personality Module Part Number     Software dependent    
Personality module release date     Software dependent    
Rated fuel position     Yes    
Total fuel     Yes    
Total hours     Yes    
Total tattletale     No    
( 1 ) Jacket water aftercooling or separate circuit aftercoolingThe following parameters are programmed at the factory to zero:
"Crank Duration"
"Maximum Number Of Crank Cycles"The zero settings prevent the Electronic Control Module (ECM) from engaging the starting motors. The settings must be reprogrammed before the engine will crank.Ensure that the "Air Shutoff" and the "Ether Control" parameters are "Enabled/ON" (if equipped). If the engine does not have these options, ensure that these two parameters are "DISABLED/OFF".If the engine is equipped with Prelube, the "Engine Prelube Duration" must be programmed to a value that is greater than zero seconds. Otherwise, the prelube pump will not cycle. If the engine is not equipped with Prelube, the parameter must be programmed to zero.The engine will have either jacket water aftercooling or separate circuit aftercooling. The correct configuration of the aftercooling system must be programmed.No password is required for programming a new ECM during the first 100 hours of service life. Free configuration feature enables the customer to tailor the programmable setpoints to the requirements of the installation during the 100 hours. Exceptions are "Fuel Limit" and engine rating.Air Shutoff
Note: If equipped.The air shutoff uses a moving plate to block inlet air to the aftercooler. The engine stops because of the restricted air supply to the combustion chamber. The air shutoff only actuates for the following conditions:
The Emergency Stop button is pressed.
An overspeed shutdown occurs.Both of the air shutoffs must be reset before the engine can be restarted.To reset the air shutoff, turn the reset knob to the "OPEN" position.Ensure that both of the air shutoffs are reset.Cold Cylinder Cutout
Note: This feature can be enabled or disabled with a Cat ET.The Cold Cylinder Cutout feature provides the following benefits:
Reduction of white smoke during cold starting
Reduction of the duration of advanced timing (cold mode)
Reduction of ether injectionThe ECM automatically turns off one electronic unit injector at a time during the following occurrences:
Cold start-up
Extended time at low idleThe ECM monitors the change of the fuel rack in order to determine if a cylinder is firing. If the cylinder is firing, the ECM activates the electronic unit injector. If the cylinder is not firing, the electronic unit injector remains deactivated. This process reduces white smoke.The following conditions must be met in order to activate the Cold Cylinder Cutout:
The Cold Cylinder Cutout parameter is programmed to "ENABLE".
The fuel rack is less than 13 mm (0.5 inch).
The jacket water coolant temperature is less than 63 °C (145 °F).The Cold Cylinder Cutout strategy is activated under either of the following conditions:
Ten seconds after the engine reaches the low idle rpm
Three seconds after ether injection is completedThe following conditions will deactivate the Cold Cylinder Cutout:
The Cold Cylinder Cutout parameter is programmed to "DISABLED".
The jacket water coolant temperature is more than 70 °C (158 °F).
A Cat ET is used for the cold cylinder cutout test.
The ether injection system is used.
The coolant temperature sensor has failed.
The engine is operating at a certain rpm when the Cold Cylinder Cutout is activated. If the engine rpm then varies by more than 50 rpm, the feature is deactivated for 3 seconds. A new engine speed is established when the feature is reactivated.
The engine is at low idle rpm for 10 seconds. If the engine speed is reduced by more than 50 rpm, the Cold Cylinder Cutout is deactivated for 30 seconds.
If the fuel rack is greater than 13 mm (0.5 inch), the Cold Cylinder Cutout is deactivated for one second.Ether Control
Note: If equipped.The ECM automatically injects ether into the air inlet manifold when the following conditions are met:
The engine rpm is between 75 and 400 rpm.
The jacket water coolant temperature is below 30 °C (86 °F).The duration of ether injection varies linearly with the jacket water coolant temperature. The duration of ether injection varies within the following range:
10 seconds at the maximum temperature of 30 °C (86 °F)
130 seconds at the minimum temperature of −40 °C (−40 °F)The longest duration of ether injection is 130 seconds even if the jacket water coolant temperature is less than −40 °C (−40 °F). See Illustration 1.
Illustration 1 g00749824
Temperature of the jacket water and duration of ether injection (Y) Temperature in °C (X) Time in secondsA momentary contact switch is installed on the con
Parts reversing Volvo Penta:
873077
873077 Reversing gear
MD2010-C; MD2010-D; MD2020-C, MD2010A; MD2020A; MD2030A, MD2010B; MD2020B; MD2030B, MD22A; MD22A-A; MD22L-A, MD22L; MD22P; MD22L-B
873079
873079 Reversing gear
MD2010-C; MD2010-D; MD2020-C, MD2010A; MD2020A; MD2030A, MD2010B; MD2020B; MD2030B, MD22A; MD22A-A; MD22L-A, MD22L; MD22P; MD22L-B
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