Service/Spare Parts Manual
Series V16
MSG30-5526-M1/UK
19
Parker Hannifin
Pump & Motor Division Europe
Trollhättan, Sweden
Parker Hannifin
Pump & Motor Division Europe
Trollhättan, Sweden
Gauge ports HO and HP
Threshold pressure setting procedure
HO/HP with negative control characteristics (M code)
With X5 not pressurized (HO/HP), the motor will be kept
at maximum displacement.
1. Make sure that the motor has been supplied with the
correct modulating spring (ordering code and name
plate information should agree). The hydraulic oil
should be 50°C.
2. Install a 0 – 600 bar gauge in port X1.
3. Turn the adjustment screw counter clockwise to en-
sure that the threshold spring is unloaded.
4. Pressurize port X5 to desired threshold pressure
(at this pressure the control starts to go to min. dis-
placement). Standard factory setting is 10 bar for
motors without displacement limiter on maximum
side.
5. Start turn the threshold adjustment screw clockwi-
se until the pressure gauge in port X1 starts to de-
crease. Right threshold current has been reached.
HO/HP with positive control characteristics (T code)
With X5 not pressurized (HO/HP), the motor will be kept
at minimum displacement.
1. Make sure that the motor has been supplied with the
correct modulating spring (ordering code and name
plate information should agree). The hydraulic oil
should be 50°C.
2. Install a 0 – 600 bar gauge in port X1.
3. Turn the adjustment screw counterclockwise to en-
sure that the threshold spring is unloaded.
4. Pressurize port X5 to desired threshold pressure (at
this pressure the control starts to go to max. dis-
placement). Standard factory setting is 10 bar for
motors without displacement limiter on minimum
side.
5. Start turn the threshold adjustment screw clockwi-
se until the pressure gauge in port X1 starts to de-
crease. Right threshold current has been reached.
Note:
One turn of the setting screw corresponds to:
•2.1 bar (30 psi) on HO and HP controls
WARNING
In order to prevent injury to the technician or the
bystanders during the adjustment procedure, all
hydraulic functions on the vehicle/machine should
be disabled (e.g. wheels raised off the ground,
work functions disconnected).
Avoid fast forward/reversed changes that can
damage the synchronizing shaft.
Controls and gauge ports
Main port A
Main port A
Port X2
Port X5
Airbleed
port
Port X1
Port X4
Port locations – V16 - 220/270 with HO control.
Gauge/pilot ports (HO control):
X1
Setting piston pressure
(large setting piston area)
X2
Servo supply pressure (after orifice)
X4
Servo supply pressure (before orifice)
X5
External pilot pressure (max 100 bar;
HO and HP control)
Port sizes:
–
M14x1.5 (ISO version)
–
9
/
16
"-18 O-ring boss (SAE version)
Setting screw