Adding an additional alternator or AC to a Sprinter

Nov 5

Auxiliary Drive Retrofit General (N63/ N62)

To retrofit the auxiliary drive like a 2nd Alternator or AC (code N63 / N62) having an illustrated layout is always helpful. You will need to tap into the engine’s running power to help you power whatever you want to add to your van.

On Sprinters with Diesel engines, like the V6 found on a NVC3 or VS30, it is possible to attach an additional compressor or aux alternator on the right side of the engine next to the oil pan.

An A/C compressor bracket can be retro fitted by replacing the existing casting.

The compressor pulley and the cooling fan are connected with the crank shaft pulley via a serpentine belt.

Belt length layout: (Example is a 120mm diameter pulley)

Parts List:

1 QTY - A 906 501 20 82 hose, cooling fluid

1 QTY - A 000 993 08 02 stop spring (radiator)

1 QTY - A 906 501 33 82 hose, cooling fluid

1 QTY - A 642 203 05 40 bracket (to alternator)

1 QTY - N 910143 006001 screw MBN 10143-M6x16-8.8

1 QTY - A 642 200 11 70 belt tensioner

1 QTY - N 910143 008015 screw MBN 10143-M8x30-10.9

1 QTY - N 000912 008210 screw DIN 912-M8x65-10.9

1 QTY - A 001 993 46 96 main serpentine belt 21.36x2045

4 QTY - N 000000 003609 screw MBN 10143-M8x95-10.9

1 QTY - A 642 230 00 42 pulley, bracket

1 QTY - A 642 200 07 56 adapter cooling water intake

Depending on the application one of the following available attachment casting options must be ordered in addition:

For retrofitting CODE N63 refrigeration casting:

1 QTY - A 642 234 04 39 casting (refrigeration)

4 QTY - N 910143 008021 screw MBN 10143 M8x65 - 8.8

For retrofitting air-conditioning casting with compressor (Denso):

1 QTY - A 642 234 03 39 casting A/C (Denso)

4 QTY - N 910143 008021 screw MBN 10143 M8x65 - 8.8

1 QTY - A 001 230 71 11 compressor (Denso)

1 QTY - A 001 993 37 96 serpentine belt (21.36mm x 1411mm)

3 QTY - N 910143 008011 screw M8 x 90 - 8.8

For retrofitting CODE N62 alternator casting:

1 QTY - A 642 150 00 65 casting (alternator)

4 QTY - N 910143 008007 screw MBN 10143 M8x50 - 8.8

Aux Drive On Engine OM642

CODE N63 — Using special tool (counter holder) 8930, remove radiator fan. Always store the viscous fan clutch in the upright position. Do not place down flat. **MB# A 000 200 73 23**

Fan Shroud and Removal

To remove fan shroud MB# A9065050155, release lateral clips from the top 2 taps very careful. The bottom 4 clips rest in a grove. Pull gently fan shroud upward.

To reassemble ensure that all 6 tabs fit correctly.

Do not install shroud with broken or missing tabs.

Pulley Bracket to Alternator Mounting

Bracket Alternator / Hydraulic Dampener

Serpentine Belt Routing

Main Serpentine Belt

Front belt removed for visual purposes.

Do not remove the small front belt if no aux generator or compressor is fitted. Belt is difficult to reinstall.

Belt tensioner: Use 17mm 12 point socket or Torx equivalent to install serpentine belt 68012426AA.

Cooling Houses

Protector on hose 1 right must be installed over metal pipe to prevent chafing.

Connect hose 2 directly to the radiator ensuring that the clip connector is engaged. Ensure that clip A 000 993 08 02 fits tightly and is secured. Ensure proper hose 2 seating.

Install cooling hose 1 MB# A9065013382 pointing backwards and using 2 hose clamps and re - installing an anti chafing protector.

Install hose 2 MB# A 906 501 20 82 pointing straight forward.

Install: Ensure that clip A 000 993 08 02 is securely engaged

Uninstall: Pull clip A 000 993 08 02 upwards to remove lower cooling hole

Retrofitting to A/C Casting

Refrigeration casting CODE N63 (Sanden) MB# A 642 234 04 39
Fits Sanden SD7H13 compressor (aftermarket sales)

A/C (air conditioning) casting Denso only available as OEM spare part MB# A 642 234 03 39
Fits Denso A/C Compressor MB# A 001 993 37 96

Note: Option N63 includes a refrigeration compressor support casting.

For aux A/C compressor applications a different support casting is required. Replace support casting with part number A 642 234 03 39

Replace existing belt MB# A 001 993 38 96 21.36x690mm with a 6 ribbed serpentine belt MB# A 001 993 37 96 21.36x1411mm

Sanden Compressor Layout Option N63

**Refrigeration Compressor (Sanden SD 7H13 aftermarket sales) and compressor casting**

Replace existing MB# A 001 993 38 96 (21.36x690mm) with a 6 ribbed serpentine belt

MB# A 001 993 37 96 (21.36x1411mm)

Bella Macchina