Danfoss MP1 User manual

Service Manual
MP1 Axial Piston Motors
Size 20/24
www.danfoss.com

Revision history Table of revisions
Date Changed Rev
November 2020 Updated Part Option for Speed and Temperature Sensor 0104
March 2020 Changed number of the shuttle shifts to 4 bar 0103
December 2019 Changed torque units from N•m [lbf•ft] to N•m [lbf•in] 0102
December 2019 First edition 0101
Service Manual
MP1 Motor
2 | ©Danfoss | November 2020 AX323657269473en-000104

Introduction Hydrostatics Servicing Overview................................................................................................................................................5
Safety Precautions............................................................................................................................................................................5
Unintended Machine Movement..........................................................................................................................................5
Flammable Cleaning Solvents................................................................................................................................................5
Fluid Under Pressure..................................................................................................................................................................5
Personal Safety.............................................................................................................................................................................5
General Information MP1 Motors Overview.....................................................................................................................................................................6
MP1 Motor Features........................................................................................................................................................................ 6
System Diagram................................................................................................................................................................................7
Schematic Diagram..........................................................................................................................................................................8
Technical Specifications Design Specifications......................................................................................................................................................................9
Technical Data................................................................................................................................................................................... 9
Operating Parameters.....................................................................................................................................................................9
Fluid Specifications....................................................................................................................................................................... 10
System Design Parameters Determination of Nominal Motor Size................................................................................................................................... 11
Variables.......................................................................................................................................................................................11
Part Options Shaft Options...................................................................................................................................................................................12
Loop Flushing Valve......................................................................................................................................................................12
Anti-Cavitation and Shock Valve..............................................................................................................................................14
Speed and Temperature Sensor...............................................................................................................................................15
Available Sensors......................................................................................................................................................................15
Sensor Position..........................................................................................................................................................................16
Speed Sensor 4.5 - 8 V.............................................................................................................................................................16
Speed Sensor 7 - 32 V..............................................................................................................................................................17
Output Pulses.............................................................................................................................................................................17
Operating Parameters Overview........................................................................................................................................................................................... 18
Speed Ratings..................................................................................................................................................................................18
System Pressure..............................................................................................................................................................................18
Case Pressure...................................................................................................................................................................................19
Temperature....................................................................................................................................................................................19
Viscosity.............................................................................................................................................................................................19
Pressure Measurements SAE A Flange Port Locations and Specifications.................................................................................................................20
SAE B Flange Port Locations and Specifications.................................................................................................................21
Cartridge Flange Port Locations and Specifications......................................................................................................... 22
Fluid and Filter MaintenanceRecommendations of Fluid and Filter Maintenance.........................................................................................................23
Initial Start-Up Procedures Start-up Safety Precautions........................................................................................................................................................24
Inspect the Unit.............................................................................................................................................................................. 24
Fill System Components with Hydraulic Fluid.....................................................................................................................24
Install Charge Pressure Gauge...................................................................................................................................................25
Calibrate the Motor/Transmission...........................................................................................................................................25
Troubleshooting Troubleshooting Overview.........................................................................................................................................................26
System Operating Hot..................................................................................................................................................................26
System Noise or Vibration...........................................................................................................................................................26
Minor Repair
Service Manual
MP1 Motor
Contents
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Shaft Seal and Dust Seal..............................................................................................................................................................27
Shaft seal and dust seal removal.........................................................................................................................................27
Shaft Seal and Dust Seal Assembly.................................................................................................................................... 28
Speed Sensor...................................................................................................................................................................................29
Speed Sensor Removal...........................................................................................................................................................29
Speed Sensor Assembly......................................................................................................................................................... 29
Loop Flushing Valve......................................................................................................................................................................30
Loop Flushing Valve Removal..............................................................................................................................................30
Inspect the Components....................................................................................................................................................... 30
Install the Loop Flushing Valve............................................................................................................................................30
Anti-cavitation Valve.....................................................................................................................................................................31
Remove the Anti-cavitation Valve (Supply Check Relief Valve)...............................................................................31
Inspect the Components....................................................................................................................................................... 31
Install the Anti-cavitation Valve...........................................................................................................................................31
Torque Chart Fasteners and Torque...................................................................................................................................................................32
Service Manual
MP1 Motor
Contents
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Hydrostatics Servicing Overview
This manual includes information on installation, maintenance, and minor repair of the MP1 motor. It
includes a description of the unit and its individual components, troubleshooting information, and minor
repair procedures.
Performing minor repairs may require the unit to be removed from the vehicle/machine. Thoroughly
clean the unit before beginning maintenance or repair activities. Since dirt and contamination are the
greatest enemies of any type of hydraulic equipment, follow cleanliness requirements strictly. This is
especially important when changing the system filter and when removing hoses or plumbing.
A worldwide network of Danfoss Global Service Partners is available for major repairs. Danfoss trains and
certifies Global Service Partners on a regular basis. You can locate your nearest Global Service Partner
using the distributor locator at http://www.danfoss.com.
For detailed technical information about the MP1 motor, please see the relevant technical information
document.
Attention
Major repairs requiring the removal of a unit’s center section, servo sleeves, or front flange voids the
warranty unless a Danfoss Authorized Service Center performs them.
Safety Precautions
Always consider safety precautions before beginning a service procedure. Protect yourself and others
from injury. Take the following general precautions whenever servicing a hydraulic system.
Unintended Machine Movement
Unintended movement of the machine or mechanism may cause injury to the technician or bystanders.
Secure the machine or disable/disconnect the mechanism while servicing to protect against unintended
movement.
Flammable Cleaning Solvents
Some cleaning solvents are flammable.
Do not use cleaning solvents in an area where a source of ignition may be present to avoid possible fire.
Fluid Under Pressure
Escaping hydraulic fluid under pressure can have sufficient force to penetrate your skin causing serious
injury and/or infection. This fluid may also be hot enough to cause burns.
Relieve pressure in the system before removing hoses, fittings, gauges, or components. Never use your
hand or any other body part to check for leaks in a pressurized line. Use caution when dealing with
hydraulic fluid under pressure. Seek medical attention immediately if you are cut by hydraulic fluid.
Personal Safety
Protect yourself from injury whenever servicing a hydraulic system.
Use proper safety equipment, including safety glasses, at all times.
Hazardous Material
Hydraulic fluid contains hazardous material.
Avoid prolonged contact with hydraulic fluid. Always dispose of used hydraulic fluid according to state,
and federal environmental regulations.
Service Manual
MP1 Motor
Introduction
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MP1 Motors Overview
The MP1 motor is a fixed displacement axial piston motor intended for closed and open circuit medium
power applications. These motors are designed primarily to be combined with other products in closed
and open circuit systems to transfer and control hydraulic power.
The MP1 motor consist of two rotating groups (displacements) and three housing (mounting)
configurations. An SAE-A two bolt, SAE-B two-bolt and a cartridge style (for space optimized gear box
mounting ) configurations.
The motor is ideally configured for installations requiring compact packaging and optimized plumbing
such as wheel ends. The standard porting configuration is twin radial (side) O-ring boss main ports.
MP1 Motor Features
•Two displacements allow the optimum selection of hydraulic motor for the lowest possible installed
cost
•SAE-A & B, two bolt, and cartridge style mounting configurations available
•Metric and inch O-ring boss system port interfaces
•Short and compact; fits into existing installation with improve porting
•Proven reliability and performance
•Worldwide sales and service
Expanded functionality
•Open circuit Fan Drive application
•PLUS+1®Compliant speed sensor option
•Integrated Flushing valve option available
•Anti-cavitation valve option available
•Shock valve option available
Service Manual
MP1 Motor
General Information
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System Diagram
Pictorial system diagram
Variable
Displacement
Pump
High pressure
relief/check valves
Loop flushing valve
MP1
Axial piston
Motor
Filter
Reservoir
Heat
exchanger
Heat exchanger
bypass
Charge pressure
relief valve
Charge
pump
Suction flow
Case flow Working Loop (High Pressure)
Working Loop (Low Pressure) and Charge Pressure
P400619
The system diagram above shows the MP1 motor in a simple closed-loop hydrostatic propel application.
The motor is driven by a variable displacement pump. The motor shows an integral loop flushing option
that will remove heat and contaminants from the main loop.
Service Manual
MP1 Motor
General Information
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Schematic Diagram
Closed Circuit
A
B
L2 N
L1
P400620
For a close loop system, the system ports (A and B) connect to the high pressure work lines. The motor
receives pressurized fluid in its inlet port and discharges de-energized fluid through the outlet port.
Either port can act as inlet or outlet; flow is bidirectional. The motor has two case drains (L1 and L2). The
motor may include loop flushing. Loop flushing provides additional cooling and filtration capacity.
Open Circuit
A
B
L2 N
L1
CCW
P400648
An open circuit configuration is also possible for the motor and such a system is shown above. A shock
valve and an anti-cavitation valve is provided to protect the unit from sudden pressure surges as well as
cavitation. The flow path of pressurized fluid is from port A through port B. In this configuration, the
direction of rotation of the motor is counter clockwise as seen from shaft side. Similarly, if the anti-
cavitation and shock valve is oriented in the reverse position, the direction of rotation will be clockwise.
Thus, pressurized fluid flow path is from port B through port A.
Service Manual
MP1 Motor
General Information
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Design Specifications
Features MP1 Motors
Design Axial piston motor with fixed displacement design.
Direction of output rotation (as seen from shaft side) Clockwise or counterclockwise
Recommended installation position Motor installation position is discretionary, The housing must always be filled with
hydraulic fluid. Consult Danfoss for non-conformance to these guidelines.
Technical Data
Feature Unit MP1M20 MP1M24
Model configuration Fixed displacement motor
Displacement cm3/rev [in3/rev] 20.0 [1.22] 24.0 [1.46]
Mass moment of inertia of
rotating components kg•m2[slug•ft2] 0.0010 [0.0007]
Mass (Weight) dry kg [lb] 5.6 [12]
Mounting flange
ISO 3019-1 flange 82-2 (SAE-A), 2 bolt
ISO 3019-1 flange 101-2 (SAE-B), 2 bolt
Cartridge mounting style
Output shaft options
Spline 13T 16/32
Spline 15T 16/32
Spline 17T 24/48
Straight keyed 22.225 dia.
Tapered 22.225 dia. 1:8
Main port configuration A, B ISO 11926-1, 7/8-14 (SAE O-ring boss) Twin port, radial
ISO 6149-1, M22x1.5 (Metric O-ring boss)
Case drain ports A, B ISO 11926-1, 3/4-16 (SAE O-ring boss)
ISO 6149-1, M18x1.5 (Metric O-ring boss)
Operating Parameters
Parameter Unit 20/24
Speed limit
Closed Circuit Rated
min-1(rpm)
4200
Maximum1) 4700
Open Circuit Rated 3400
Maximum 3800
System pressure Maximum working pressure2) bar [psi] 350 [5000]
Maximum pressure 380 [5429]
Case pressure Rated bar [psi] 2 [29]
Maximum 6 [87]
1) At Maximum speed, system minimum low pressure is 18 bar.
2) Applied pressures above maximum working pressure requires Danfoss application approval.
Service Manual
MP1 Motor
Technical Specifications
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Fluid Specifications
Features Units 20/24
Viscosity
Intermittent1
mm2/sec. [SUS]
5 [42]
Minimum 7 [49]
Recommended range 12 - 80 [66 - 370]
Maximum (cold start)21600 [7500]
Temperature range3
Minimum (cold start)
°C [°F]
-40 [-40]
Recommended range 60 - 85 [140 - 185]
Maximum continuous 104 [220]
Maximum intermittent 115 [240]
Cleanliness per ISO 4406 22/18/13 (as per ISO 4406)
1Intermittent=Short term t <1 min per incident and not exceeding 2 % of duty cycle based load-life.
2Cold start = Short term t < 3 min, p < 50 bar [725 psi], n < 1000 min-1 (rpm)
3At the hottest point, normally case drain port.
Service Manual
MP1 Motor
Technical Specifications
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Determination of Nominal Motor Size
The following equations are used to compute the input flow, output torque, output power and speed.
Generally, sizing the right motor starts with an evaluation of the machine requirements such as speed
and torque. Select a motor that will transmit the required torque, then select a pump that will meet the
flow and pressure requirements of the motor.
Unit: Metric System: Inch System
Vg• n Vg• n
Qe= l/min Qe= [gpm]
1000 • ηv231 • ηv
Vg• ∆p • ηmVg• ∆p • ηm
Output torque Me= Nm Me= [lbf•in]
20 • π 2 • π
Qe• ∆p • ηtVg• n • ∆p • ηt
Output power Pe= kW Pe= [hp]
600 396 000
Qe• 1000 • ηvQe• 231 • ηv
Speed n = min-1 n = (rpm)
VgVg
Variables
SI units [US units]
Qe= Input flow l/min (US gal/min)
Me= Output torque N•m (lbf•in)
pe= Output power kW (hp)
n = Speed min-1 (rpm)
Vg= Displacement per revolution cm3/rev [in3/rev]
pO= Outlet pressure bar [psi]
pi= Inlet pressure bar [psi]
∆p = pO- pi(system pressure) bar [psi]
ηv= Volumetric efficiency
ηmh = Mechanical-hydraulic efficiency
ηt= Motor total efficiency (ηv• ηmf)
Service Manual
MP1 Motor
System Design Parameters
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Shaft Options
MP1 motors are available with a variety of splined, straight keyed, and tapered shaft ends. Nominal shaft
sizes and torque ratings for some available shafts are shown in the accompanying table. Other shaft
options may exist. Contact your Danfoss representative for availability.
Torque ratings assume no external radial loading.Continuous torque ratings for splined shafts are based
on spline tooth wear, and assume the mating spline has a minimum hardness of Rc55 to full spline depth
and coupling has good lubrication.
Maximum torque ratings are based on shaft torsional strength and assume a maximum of 200,000 load
reversals.
Shaft availability and torque ratings
N•m [lbf•in] 20/24
Spline, 13 tooth, 16/32 pitch Max 226 [2000]
Spline, 15 tooth, 16/32 pitch Max 362 [3200]
Spline, 17 tooth, 24/48 pitch Max 165 [1460]
Tapered, Ø22.225 mm Max 362 [3200]
Straight keyed, Ø22.225 mm Max 226 [2000]
Recommended mating splines for MP1 motor splined output shafts should be in accordance with ANSI
B92.1 Class 5. Danfoss external splines are modified Class 5 Fillet Root Side Fit. The external spline Major
Diameter and Circular Tooth Thickness dimensions are reduced in order to assure a clearance fit with the
mating spline.
Loop Flushing Valve
Closed circuit systems may require loop flushing to meet temperature and cleanliness requirements. MP1
motors are available with an optional integral loop flushing. A loop flushing valve will remove heat and
contaminants from the main loop at a rate faster than otherwise possible.
The hydraulic circuit of an MP1 motor with loop flushing option is shown below. The MP1 motor loop
flushing design is a simple spring centered shuttle spool with an orifice notch.
A
B
L2 N
L1 P400637
Notch Spool Spring guide Spring
Plug
A loop flush shuttle spool is used to separate system A and system B pressures. System delta pressure will
cause the shuttle spool to shift, allowing the low side system pressure to flow to the orifice towards the
case. The shuttle shifts at approximately 4 bar [57 psi]. The flushing flow is a function of the low loop
system pressure and the size of the notch.
Loop flush flow options of 1.5 & 3.6 l/min [0.4 & 1.0 gal/min] are available and are adequate for most
applications. Contact your Danfoss representative for assistance.
Service Manual
MP1 Motor
Part Options
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Loop flush characteristic curves
1.5 L and 3.6 L@15 bar, oil temp=50°C
P400656
0
1
2
3
4
5
0 5 10 15 20 25
Flow [L/min]
System pressure _ low side [dbar]
1.5L - 50°C
0°C
3.6L - 5
When a MP1 pump is used with an external loop flushing shuttle valve, ensure that the charge setting of
the pump matches the setting of the loop flushing shuttle valve. Contact your Danfoss representative for
the availability of additional charge relief settings.
Service Manual
MP1 Motor
Part Options
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Anti-Cavitation and Shock Valve
The MP1M fixed motors are available with an anti-cavitation valve option. The key application for this
option is open circuit fan drives.
The anti cavitation valve function as a check valve within the same cavity which is integrated into the
endcap. The check valve function provides protection against cavitation that can occur upon
introduction of an overrunning load or due to loss of input flow. In such case, the system delta pressure
becomes negative and the check valve opens connecting the motor inlet and outlet, effectively short-
circuiting the motor. The shock valve function is intended to be used for system overpressure protection
events of limited duration only. It is not intended for continuous system pressure limitation.
The shock valve is available with 280 bar [4061 psi] or 345 bar [5004 psi] setting.
For this option the high pressure port needs to be defined upfront to get the correct motor rotation.
Reversing the motor is not possible with this option.
Flow direction
Motor shaft rotation (as
seen from shat side) Port A Port B System Port type, Loop
Flushing & Anti-
cavitation*
Clockwise (CW) Out In MD1/MD2/SD1/SD2
Counterclockwise (CCW) In Out MC1/MC2/SC1/SC2
*See Master Model Code
Anti cavitation and shock valve, Port B High Pressure, Clockwise rotation
A
B
L2 N
L1
P400636
CW
Shock valve Anti-cavitation valve
P400658
Anti-cavitation
and shock valve
Service Manual
MP1 Motor
Part Options
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Anti cavitation and shock valve, Port A High Pressure, Counter Clockwise rotation
P400635
A
B
L2 N
L1
CCW
P400660
Anti-cavitation
and shock valve
Speed and Temperature Sensor
MP1 motors are available with an optional speed and temperature sensor. This hall-effect pulse pick-up is
located in the motor housing. The sensor accepts supply voltage and outputs a digital pulse signal in
response to the speed of the cylinder block. The output changes its high/low state as the target teeth
pass by the sensor's face. The digital (on-off-on-off) pulse train is fed to a controller, which interprets its
rate of change as a speed. A logic circuit decodes the two signals to provide an additional direction
indication (high or low) depending on direction).
The speed sensor is designed for rugged outdoor, mobile or heavy industrial speed sensing applications.
The detection of the speed is contactless and does not need any calibration or adjustments. There are
two optional sensors available.
Available Sensors
Description Order number
149055 11232698
Supply voltage 4.5 – 8 V 7 – 32 V
Speed signals Two, 90° Phase shift Two, 90° Phase shift
Direction signal One One
Temperature signal One One
Service Manual
MP1 Motor
Part Options
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Sensor Position
Sensor position in SAE and Cartridge housing.
SAE & Cartridge housing
Speed sensor
P400649
Machined grooves
on cylinder block
Speed sensor
protection
Target block
Speed sensor target block has nine arc groove on cylinder block for detection of direction (CW/CCW) and
rotation.
Speed Sensor 4.5 - 8 V
Speed sensor connector, 6-pin
4
321
56
P006035
Pinout:
1. Speed signal 2
2. Direction signal
3. Speed signal 1
4. Supply
5. Ground
6. Temperature
Technical data
Parameter Min. Nom. Max. Note
Supply voltage 4.5 VDC 5 VDC 8 VDC Regulated supply voltage.
Reverse polarity protected.
Supply protection – – 30 VDC Shuts off above 9 V.
Pulses per revolution NPN & PNP
Max. required supply current – – 25 mA At supply voltage
Max. output current – – 50 mA
Operation mode NPN & PNP Push-Pull amplifier
Temperature signal -40°C = 2.318V – 100°C = 0.675V
Service Manual
MP1 Motor
Part Options
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Technical data (continued)
Parameter Min. Nom. Max. Note
Output low speed signal 5 % 8.5 % 12 % Ratiometric output voltage
Low state > 0 V to provide wire
fault detection
Output high speed signal 88 % 91.5 % 95 %
Detectable frequency range 1 Hz – 10 000 Hz
Ordering number 149055
Color of connector Black
Speed Sensor 7 - 32 V
Speed Sensor 7 – 32 VDC technical data and information about connector.
Speed sensor connector, 6-pin
4
321
56
P006035
Pinout:
1. Speed signal 2
2. Direction signal
3. Speed signal 1
4. Supply
5. Ground
6. Temperature signal
Technical data
Parameter Min. Max. Note
Supply voltage range 7 VDC 32 VDC
Supply protection – 36 VDC 36 VDC over voltage protection
-36 VDC permanent reverse
polarity protection
Max. required supply current – 30 mA
Max. output current – 50 mA
Operation mode NPN open collector Internal 2k7 pull-up resistor to
supply
Output low signal range 2 % 10 % Max. output voltage 24 VDC
Output high signal range 55 % 85 %
Detectable frequency range 1 Hz 10 000 Hz
Speed sensor order number 11232698
Color of connector Yellow
For more information, see Speed and Temperature Sensor, Technical Information, BC152886482203.
Output Pulses
The expected number of output pulses per revolution is shown below.
The number of pulses (per rev) 9
Service Manual
MP1 Motor
Part Options
©Danfoss | November 2020 AX323657269473en-000104 | 17

Overview
This section defines the operating parameters and limitations with regard to output speeds and
pressures.
Speed Ratings
Smooth operation and output torque ripple determine the acceptable low speed operating condition.
Generally Danfoss axial piston motors will operate smoothly down to 150 rpm. In some instances, it is
possible to operate smoothly at less than 150 rpm, but performance must be verified for the specific
application. We do not recommend that any axial piston motor be sized to operate continuously at
speeds less than 100 rpm.
Rated speed is the highest input speed recommended at full power condition. Operating at or below
this speed should yield satisfactory product life.
Maximum speed is the highest operating speed permitted. Exceeding maximum speed reduces product
life and can cause loss of hydrostatic power and braking capacity. Never exceed the maximum speed
limit under any operating conditions.
Operating conditions between Rated speed and Maximum speed should be restricted to less than full
power and to limited periods of time. For most drive systems, maximum unit speed occurs during
downhill braking or negative power conditions.
W
Warning
Unintended vehicle or machine movement hazard
The loss of hydrostatic drive line power, in any mode of operation (forward, neutral, or reverse) may cause
the system to lose hydrostatic braking capacity. You must provide a braking system, redundant to the
hydrostatic transmission, sufficient to stop and hold the vehicle or machine in the event of hydrostatic
drive power loss.
System Pressure
System pressure is the differential pressure between system ports A and B. It is the dominant operating
variable affecting hydraulic unit life. High system pressure, which results from high load, reduces
expected life. Hydraulic unit life depends on the speed and normal operating, or weighted average,
pressure that can only be determined from a duty cycle analysis.
Application pressure is the high pressure relief setting normally defined within the order code of the
pump. This is the applied system pressure at which the driveline generates the maximum calculated pull
or torque in the application.
Maximum working pressure is the highest recommended Application pressure. Maximum working
pressure is not intended to be a continuous pressure. Propel systems with Application pressures at, or
below, this pressure should yield satisfactory unit life given proper component sizing.
Maximum pressure is the highest allowable Application pressure under any circumstance. Application
pressures above Maximum Working Pressure will only be considered with duty cycle analysis and factory
approval. Pressure spikes are normal and must be considered when reviewing maximum working
pressure.
All pressure limits are differential pressures referenced to low loop (charge) pressure. Subtract low loop
pressure from gauge readings to compute the differential.
Minimum low loop pressure (above case pressure) is the lowest pressure allowed to maintain a safe
working condition in the low side of the loop.
Service Manual
MP1 Motor
Operating Parameters
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Case Pressure
Under normal operating conditions, the rated case pressure must not be exceeded. During cold start,
case pressure must be kept below maximum intermittent case pressure. Size drain plumbing accordingly.
C
Caution
Possible component damage or leakage.
Operation with case pressure in excess of stated limits may damage seals, gaskets, and/or housings,
causing external leakage. Performance may also be affected since charge and system pressures are
referenced to case pressure.
Case pressure limits
Maximum (continuous) 2 bar [29 psi] maximum pressure
Intermittent (cold start) 6 bar [87 psi] maximum pressure
Temperature
The high temperature limits apply at the hottest point in the transmission, which is normally the motor
case drain. The system should generally be run at or below the published rated temperature.
The maximum intermittent temperature is based on material properties and should never be
exceeded.
Cold oil will generally not affect the durability of the transmission components, but it may affect the
ability of oil to flow and transmit power.
The minimum temperature relates to the physical properties of component materials.
Size heat exchangers too keep the fluid within these limits. Danfoss recommends testing to verify that
these temperature limits are not exceeded.
Viscosity
Viscosity For maximum efficiency and bearing life, ensure the fluid viscosity remains in the
recommended range.
The minimum viscosity should be encountered only during brief occasions of maximum ambient
temperature and severe duty cycle operation.
The maximum viscosity should be encountered only at cold start.
Ensure fluid temperature and viscosity limits are concurrently satisfied.
Service Manual
MP1 Motor
Operating Parameters
©Danfoss | November 2020 AX323657269473en-000104 | 19

MP1M SAE A Flange Port Locations and Specifications
SAE A flange ports
System port A
System port B
Case drain port L1
Case drain port L2
Port information
Port Port size Pressure obtained Gauge size, bar [psi]
L1, L2 3/4-16 UNF / M18 x 1.5 Case drain 10 [100]
A 7/8-14 UNF / M22 x 1.5 System pressure 500 [7250]
B 7/8-14 UNF / M22 x 1.5 System pressure 500 [7250]
Service Manual
MP1 Motor
Pressure Measurements
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