20459942 Volvo.Penta Gasket

Illustration 1 g00668719
Operation
The service codes for the hydraulic hammer are in the following list: 86, 87, 88 and 8A. The service codes are used in order to adjust the main hydraulic pump flow. The flow is adjusted in order to correspond with the flow that is required for a hydraulic hammer. Three different parameters can be set and stored into the memory of the controller. The parameters are in the following list:
Number of Main Hydraulic Pumps
Circuit Pressure of the Hydraulic Hammer
Pump Flow that is RequiredUse the following procedure in order to enter the hammer mode. The user mode button (5) is depressed in order to enter the hammer mode.The controller will regulate the power shift pressure in order to regulate the main pumps so that the flow requirements or the pressure requirements for the hammer or other attachments is not exceeded.These parameters, that are set in the user mode, will only affect the main pump operation while the hammer pedal is activated individually. In addition to these parameters, the controller will automatically change the power shift pressure so that the flow rates of the pump are changed in order to compensate for the change in the engine speed. Before an attempt to adjust the parameters is made, refer to the operation manual for the hammer for the proper pump flow and pressure settings.Parameter Settings Of The Hammer Mode
Hammer ModeThe hammer mode can be selected by the user mode switch. The hammer mode is used for attachments that require less oil flow. While such an attachment is operated, the power shift pressure is kept constant at a certain pressure. When the hammer mode is activated, the power shift pressure is controlled at a certain pressure in order to keep the pump flow constant only while the hammer pedal is being pushed. The controller will change the power shift pressure in order to offset the change in the flow of the pump, when the position of the engine speed dial is changed. This pressure change is caused by the change in the engine speed.When the pressure is 13.7 MPa (1987 psi), the maximum flow and the minimum flow that is supplied to one pump is listed:
Table 1
Maximum Flow For One Pump    
Model     Liter/Min
(U.S. gpm)    
311B     105 (28)    
312B     117 (31)    
320B, BL     178 (53)    
322B, BL     200 (53)    
325B, BL     208 (55)    
330B, BL     232 (61)    
Table 2
Minimum Flow For One Pump    
Model     Liter/Min
(U.S. gpm)    
311B     45 (12)    
312B     50 (13)    
320B, BL     78 (21)    
322B, BL     104 (27)    
325B, BL     104 (27)    
330B, BL     112 (30)    Note: The above maximum flow and the minimum flow should be measured for reference at a certain pressure and rated engine speed.
Types Of ParametersThere are three types of parameters in the hammer mode. The following examples are some types: the number of pumps that are used, the pressure of the circuit for the hammer and the pump flow.
Setting The ParametersPerform the following checks, if you are operating a hammer with a maximum pump flow of 250 L/min (66 US gpm). Check the following items when the pump flow is for one pump: Check Specifications : Check the operation manual for the hammer for the required settings for pressure and settings of the pump flow.
Check Specifications Of The Hammer : Check the operation manual for the hammer for the required settings of pressure and settings for pump flow. The maximum setting of pump flow is 250 L/min (66 US gpm).
Set The Number Of Pumps : This parameter is "1". Select "1", if one pump is required to send hydraulic oil to the hammer. See "Setting The Number Of Pumps".
Hammer Circuit Pressure Setting : Enter the required pressure for a hammer. The required pressure is identical to the description in the specifications for the hammer. For example, if the pressure setting for the hammer is 17700 kPa (2567 psi), the formula is listed: 1 MPa () equals 1000 kPa () and 17700 kPa () divided by 1000 equals 17.7 MPa (2567 psi). Enter 18 MPa (2610 psi) by rounding off the result. See "Setting The Circuit Pressure".
Set The Pump Flow For The Hammer: Enter the required pump flow for a hammer. See "Setting The Pump Flow". The required pump flow is identical to the description in the specifications for the hammer. Refer to item 6, if the speed of the hammer is a problem. The following check should be performed, when the hammer is being operated with a maximum pump flow of 250 L/min (66 US gpm) and the flow of two pumps is through a combined function auxiliary line or a combined attachment for the flow of two pumps:
Check The Specifications : Check the operations manual of the hammer for the required pressure settings and settings for the pump flow.Note: When the pressure is 13.7 MPa (1987 psi), the maximum flow and the minimum flow that is supplied to two pumps is listed:
Table 3
Minimum Flow For Two Pumps    
Model     Liter/Min
(U.S. gpm)    
311B     90 (24)    
312B     100 (26)    
320B, BL     156 (41)    
322B, BL     208 (62)    
325B, BL     208 (62)    
330B, BL     224 (59)    Note: When the pressure is 17.7 MPa (2567 psi), the maximum flow and the minimum flow that is supplied to two pumps is listed:
Table 4
Minimum Flow For One Pump    
Model     Liter/Min
(U.S. gpm)    
311B     70 (82)    
312B     82 (22)    
320B, BL     126 (33)    
322B, BL     176 (46)    
325B, BL     176 (46)    
330B, BL     184 (49)    
Set The Number Of Pumps : Select parameter "2", if two pumps are required. Two pumps are required in order to send hydraulic oil to the hammer through the combined