Port Locations and Gauge Installation
When testing system pressures, calibrate pressure gauges frequently to ensure accuracy. Use snubbers to
protect gauges. The drawing and following table show the port locations and gauge sizes needed.
Port locations
P106 232E
Port B
split flange boss
1 5/16 code 62
per ISO 6162
thread: M12
18 Min. full
thread depth
Charge pump inlet S
1 5/16-12 UNF 2B
Port A
split flange boss 1 5/16 code 62
per ISO 6162 thread: M12
18 Min. full thread depth
Case drain Port L4
use highest port
as outlet
1 1/16-12 UNF 2B
Gage port M4
servo pressure
7/16-20 UNF 2B
Gauge port MA
System pressure
9/16-18 UNF-2B
Gauge port MB
System pressure
9/16-18 UNF-2B
Remote filtration port E
7/8-14 UNF-2B
Remote filtration port E
7/8-14 UNF-2B
Remote filtration port D
7/8-14 UNF-2B
045/053
Gauge port AM3
Charge pressure
after filter
9/16-18 UNF-2B
Gauge port M5 Servo pressure
7/16-20 UNF-2B
Case drain port L2
1 1/16-12 UNF-2B
M14 O-ring plug
7/16-20 UNF-2B
use for air bleed when filling pump
Gauge port M3
Charge pressure
after filter
9/16-18 UNF-2B
060/068
Charge
construction
port
H1P Ports Information
Port identifier
Port size
Wrench size
Pressure obtained
Gauge pressure
MA, MB,
9
∕
16
–18 UNF
1/4 internal hex
System pressure
600 bar [10,000 psi]
L2, L4
1
1
∕
16
–12 UNF 2B
9/16 internal hex
Case drain
10 bar [100 psi]
M3; AM3 (045/053)
Alternate
9
∕
16
–18 UNF 2B
1/4 internal hex
Charge pressure
50 bar [1000 psi]
M4, M5, M14
7
∕
16
–20 UNF 2B
3/16 internal hex
Servo pressure
Service Manual
H1P 045/053/060/068 Axial Piston Single Pumps
Pressure Measurements
28 |
©
Danfoss | June 2020
AX152886481964en-000405