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Service Manual
K and L Frame Variable Motors, Cartridge Mount
Pressure measurements
Required tools
Port locations and gauge installation
©
Danfoss | July 2017
The service procedures described in this manual can be performed using common mechanic's hand
tools. Special tools, if required are shown. Calibrate pressure gauges frequently to ensure accuracy. Use
snubbers to protect gauges.
For economical reasons, the cartridge motor does not contain any designated gauge installation ports.
All pressure measurements can be obtained by installing tee fittings to the connections at the locations
listed in the table / drawing below. Recommended gauge sizes are also listed.
Port information
Port identifier
Size
X1
[0.5625]-18 UNF-2B
Case drain port
[0.750]-16 PER SAE
A
[1.0625]-12 PER SAE
B
[1.0625]-12 PER SAE
Brake release port
[0.4375]-20 PER SAE
Twin radial port locations
Brake release port
System port (B)
System port (A)
Pressure obtained
Control signal
Case drain
System pressure
System pressure
N/A
Control port (X1)
Case drain port
P104 249E
520L0631 | AX00000042en-US0402 | 11
Gauge size, bar [psi]
600 [10 000]
10 [100]
600 [10 000]
600 [10 000]
N/A
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