Danfoss Series 42 Service Manual

1. Remove the MDC module from the pump housing.
Side view of NSS and NSS cavity
D039
D037
D040
/ i n
27 N•m
[20 lbf•ft]
7
8
1 mm
[0.04 in]
23.3 mm
[0.916 in]
D038
8 mm
6 N•m
[4.4 lbf•ft]
2. Using a 7/8 in hex wrench, remove the NSS/BAS (D040).
3. Using a screwdriver to pry it out, remove and discard the NSS cover (D039). Be careful not to damage
the internal hardware.
4. Using an 8mm hex socket, remove the nut (D038).
5. Pry the cam (D037) off the shaft.
6. On the underside of the MDC module, gently clamp a pair of locking pliers around the spring contacts
of the control cam. Be careful not to damage the spring wires. The pliers hold the nub on the control
cam to the pin underneath. This holds the control cam in neutral position.
Apply locking pliers here.
Service Manual
Series 42 Axial Piston Closed Circuit Pumps
Minor Repair
48 520L0638 • Rev 0300 • July 2015

Danfoss Series 42 Specifications

General

Brand	Danfoss
Model	Series 42
Category	Water Pump
Language	English