Reassembly Operations; Voltage Regulator; Matching Voltage Regulator; Rheostat For Remote Voltage Setting - MarelliMotori MJB 160 Nstrucciones Y Advertencias De Seguridad

5.4 Reassembly operations

Carry out the operations described above for dismantling in reverse order.
- Place the pre-loading spring into on the N.D.E. shield and fixing it by some grease.
- The fixing screws have to be fixed with LOCTITE type 243 (on the threaded surface).
- If a bearing was removed, always install a new one.
- To make assembly easier, the bearings should be heated to about 80 - 90°C.
ATTENTION!: Bearings should be assembled with the utmost care in order not to damage them.
If a locking element has to be replaced, make sure that the new one is of the same type and same resistance class of the
original.
The following table indicates the tightening torques valid for locking screws and nuts:
Fixing of electrical connections
Fixing of components (shields, bearing caps, etc).
Fixing of feet or flange.
Assembly of discs is carried out directly on the shaft-end
(on MJB 160 only)

6. VOLTAGE REGULATOR

6.1 Matching Voltage regulator

The generators is usually equipped with an automatic voltage regulator for the specific application.
The below table shows the different type of AVRs depending on the type of demand and working.
MAINS TYPE OF REGULATORS
MARK "V"
MARK "6" FOR PMG
MEC20 DIGITAL AVR

6.2 Rheostat for remote voltage setting

For all generators, that rheostat can be inserted between the auxiliary terminals P and Q (FAST-ON terminals) of the AVR after
having removed the short-circuiting bridge. The external rheostat has to be inserted with its wiper in intermediate position and
then the internal potentiometer of AVR (P1) has to be reset to obtain the nominal voltage.
Rheostat features about must be minimum rating :
- 0,5 W, resistance 100 K Ohm to AVR ( M16FA655A and M16FA668A).
- 1 W, resistance 10K Ohm to AVR DS-1 ( M31FA600A).
SIN.UM.805.6
Tightening torques in Nm ± 10%
Application
CODE RDT
M16FA655A
M16FA668A
M31FA600A
Thread diameter
M 6 M 8 M10
(cl.8.8)
/ 16
11 26
/ /
TECNICAL NOTE
SIN.NT.002.X
SIN.NT.037.X
SIN.NT.035.X
12
M10 M12
(cl.12.9)
/ / /
48 / 85
/ 75 /
963857153_F
ENGLISH