Required Tools And Pressure Measurements; Required Tools; Port Locations And Gauge Installation - Danfoss Series 40 M46 Service Manual

Service Manual
Series 40 M46 Variable Pumps

Required tools and pressure measurements

Required tools

Port locations and gauge installation

12 | © Danfoss | September 2017
The service procedures described in this manual can be performed using common mechanic's hand
tools. Special tools, if required, are shown. When testing system pressures, calibrate pressure gauges
frequently to ensure accuracy. Use snubbers to protect gauges.
The following tables and drawing show the port locations and gauge sizes needed.
Port information
Port identifier Port size
L1, L2 1-1/16 12 SAE
MA, MB 9/16 18 SAE
M3 9/16 18 UNF
M4, M5 9/16 18 SAE
System valves
Port identifier Relief
RA A port pressure relief valve
RB B port pressure relief valve
R Charge pressure relief valve
BP Bypass valve
System ports
Port identifier
A system pressure port
B system pressure port
S (charge pressure inlet)
Wrench size Pressure obtained
9/16 internal hex Case drain
11/16 hex System pressure
11/16 hex Charge pressure
11/16 hex Servo pressure
Port size
1-5/16 12 UNF
1-5/16 12 UNF
3/4 16 UNF
5/8 18 UNF
Port size
1-5/16 12 SAE
1-5/16 12 SAE
1-5/16 12 SAE
Gauge size, bar [psi]
10 [150]
600 [9,000]
50 [750]
50 [750]
Wrench size
1-1/4 hex
1-1/4 hex
7/8 hex
1 inch hex
11026743 | AX00000027en-US0202