Port locations and gauge installation - 045/053The following table and drawings show the port locations and gauge sizes needed. When testing systempressures, calibrate pressure gauges frequently to ensure accuracy. Use snubbers to protect gauges.Port informationPort 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 locationsP109117C D ABM4EM5L3MD MAL1MCMBAM3 M3M4M5L2 M3M14 M14Service ManualH1 45/53/60/68 Tandem Closed Circuit Axial Piston PumpsPressure measurements26 | © Danfoss | June 2018 520L0928 | AX00000103en-US0303
