Port locations and gauge installation - 045/053
The following table and drawings show the port locations and gauge sizes needed. When testing system
pressures, calibrate pressure gauges frequently to ensure accuracy. Use snubbers to protect gauges.
Port information
Port identifier
Port size
Wrench size
Reading
Gauge size, bar [psi]
L1, L2, L3
1 1/16-12 UNF 2B
9/16 internal hex
Case drain
10 bar [100 psi]
MA, MB, MC, MD
9/16-18 UNF
1/4 internal hex
System pressure
600 bar [10,000 psi]
M3
9/16-18 UNF 2B
1/4 internal hex
Charge pressure
50 bar [1000 psi]
M4, M5
7/16-20 UNF 2B
3/16 internal hex
Servo pressure
50 bar [1000 psi]
AM3
9/16-18 UNF 2B
1/4 internal hex
Alternate Charge pressure
50 bar [1000 psi]
A, B, C, D
1 5/16-12
-
System ports
-
E
7/8-14
-
Charge filtration
-
M14
7/16-20
1/4 internal hex
Case gauge port
10 bar [100 psi]
Port locations
P109117
C
D
A
B
M4
E
M5
L3
MD
MA
L1
MC
MB
AM3
M3
M4
M5
L2
M3
M14
M14
Service Manual
H1 45/53/60/68 Tandem Closed Circuit Axial Piston Pumps
Pressure measurements
26 |
©
Danfoss | June 2018
520L0928 | AX00000103en-US0303