3.25 Auxiliary drive

Drive from engine via V-belt
Provision can be made on the engine to drive ancillaries by means of a V-belt of max. 7 kW using the flange points already present.
Versions available from the factory:

Servo pump/power steering pump as standard with option of:
2nd alternator, 140 A (PR no. 8HG)
A/C compressor (PR no. 2AB) functional compressor installed in vehicle of type Denso 10S 17(unregulated)
Preparation for installation of hydraulic pump (PR no. 2BH), Hydraulic pump is not included in delivery, separate purchase through customer service is necessary.

Auxiliary drive from manual gearbox
Drive is via the layshaft of the gearbox

Versions available from the factory:

Assembly	PR number
Gearbox without auxiliary drive (NA), standard	0R0
Gearbox with auxiliary drive (NA) Layshaft without flange	0R1
Gearbox with auxiliary drive (NA) Layshaft with flange	0R3
Gearbox with auxiliary drive (NA) Gear change lock, Layshaft without flange	0R6
Gearbox with auxiliary drive (NA) Gear change lock, Layshaft with flange	0R7

Notes:

The version of the auxiliary drive and selection of the ratio are dependent on the output and speed of the assembly to be driven.
Gearbox dependent auxiliary drive systems may only be switched on and off when stationary.
Details about maximum transferable torque figures (Nm) for individual auxiliary drive systems are benchmarks for jolt-free and vibration-free operation. The details were based on a durable splinetype connection and calculated service life in accordance with DIN 922 of at least 500 operating hours. Not taken into consideration are additional forces imparted on the assemblies to be driven.
Select auxiliary drive ratio so that a minimum speed (engine) of 1,200 rpm can be maintained with the auxiliary drive under load. The power draw should be within the range of the maximum engine torque.
Disconnected drive shafts, fan wheels or belt pulleys must be covered over.
No belt or chain drive systems may be attached to the drive shaft or flange of auxiliary drive systems. Submit diagrams and the necessary data for approval of exceptions only where these are absolutely necessary.

Dimensions - coupling flange - auxiliary drive

: Direction of rotation

a ø	b ø	c ø	d ø	e ø	f ø	Hole number
90	74,5	47^e8	6	2,1	8,0^A12₂	6

Technical data/information - auxiliary drive

Max. auxiliary drive with jolt-free and vibration-free operation: Md = 140 Nm
Continual output at engine speed 2,500 rpm: N_max= 28 kW
Working speed of auxiliary drive MNA = 0.687/0.704 x n_Mot

I	II	III	IV	V	VI	VII	A1	B1	B2	C1
65-100 kW	NSG 370-6	0R3/0R7	0,687	28/2500	140	b	639	131	151	125,8
120 kW	NSG 400-6	0R1/0R6	0,704	28/2500	140	b	745	127	147	125,5

Key for auxiliary drive table Engine

II Gearbox
III Auxiliary drive reference (special equipment PR no.)
IV Transmission ratio i NA; drive speed of aux.drive n_NA x N_Motor
V Continuous output of auxiliary drive in kW at engine speed rpm
VI Maximum drive torque of auxiliary drive in Nm
VII Direction of rotation as seen in direction of travel

a) Anti-clockwise
b) Clockwise

A1 Dimension from rear edge of coupling flange to centre of front axle in mm
B1 Dimension from centre of coupling flange to upper edge of chassis frame in mm
C1 Dimension from centre of coupling flange to centre of gearbox flange in mm

Note: Subject to errors and technical amendments. The electronic version of the body guidelines is the decisive source of up-to-date data on body guidelines.

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