Application&Installation Manual

ACCESSORY DRIVE SYSTEM

Figure 17-2 GEARTRAIN GEAR DRIVE RATIOS

17.3 DRIVETRAIN

The standard drivetrain for a DD Platform engine contains the water pump, vibration damper

pulley, and a tensioner driven by a drive belt. The vibration damper pulley consists of 2 Poly-V

crankshaft pulleys integrate

d into one combined pulley. The inner plane of the pulley is an

8–groove pulley, which drives the waterpump, alternator, and freon compressor. The outer plane

of the vibration damper pulley is a 10–groove pulley, which drives the fan drive system. The drive

ratio of the water pump is

2.22:1 for the DD Platform engine and 2.05:1 for the DD Platform

engine. See Figure 1–3 for a schematic of the DD Platform drivetrain.

17-4 All information subject to change without notice.