Danfoss Series 40 M46 Tandem User Manual

Charge pump removal
2304
2408
2407
2142
2404
2150
2403
2405
2147
1/2 in
102 Nm
[75 ft•lb]
2145
2144
3/4 in
102 Nm
[75 ft•lb]
2146
Inspection
Inspect the gerotor (2403) and gerotor cover (2304) for wear, scratches or pitting. If any component
shows signs of wear, scratching, or pitting, replace all damaged components. Inspect pin (2404) and
key (2405) for damage, and replace parts if necessary. Replace O-ring (2407, 2408, 2150) whenever
charge pump is disassembled.
Reassembly
1. Install pin (2405) into coupling (2142). Install coupling (2142) into gerotor (2403) with pin (2405)
aligned in groove.
2. Install coupling onto shaft of front pump.
3. Install pin (2404) into front pump housing and gerotor cover (2304) onto gerotor (2403).
4. Lubricate and install O-rings (2407, 2408, and 2150).
5. Thread tie rod (2145) into front pump housing.
6. Mate two pumps together to install rear pump shaft into coupling (2124). Using a pipe wrench or
pliers, rotate front pump shaft to align coupling with rear pump shaft and then push two pump
housings together. Use a rubber mallet if necessary.
Position the pumps vertically with the front housing on top of the rear housing to make alignment
easier.
7. Using a 1/2 12 point hex wrench, install bolts (2147). Torque to 102 Nm [75 ft•lb].
8. Install bracket (2146). Using a 3/4 hex wrench install nut (2144). Torque to 102 Nm [75 ft•lb].
Service Manual
Series 40 M46 Tandem Variable Pumps
Minor repair
30 |
©
Danfoss | September 2017 11029852 | AX00000030en-US0202

Danfoss Series 40 M46 Tandem Specifications

General

Brand	Danfoss
Model	Series 40 M46 Tandem
Category	Water Pump
Language	English