SERVICE MANUAL
WATER PUMP, THERMOSTAT & IDLER PULLEYS
Section 9
REASSEMBLY AND INSTALLATION
Reassemble and Install the Thermostat as follows:
1.
Install thermostat in housing.
2.
Place a new thermostat housing gasket onto
housing.
3.
Attach thermostat housing to cylinder head with
two bolts and lock washers. Connect the hose.
IDLER PULLEYS
NOTE: For Fleetstar (2050) and Cargostar Motor
Truck Applications equipped with DTI-466 or DT/DTI-
466B & C engines a new air compressor Idler Pulley
Assembly (Figure 26) has replaced the old style
assembly (Figure 27) in production and service.
The new style features an idler pulley bearing shaft
that is mounted by a press fit into the idler pulley
support bracket.
New Style Idler Pulley is Effective on:
DT-466B & C - S/N 82896 & up
DTI-466B & C - S/N 83066 & up
Figure 26. - New Style
1.
Ring, front retaining
2.
Pulley, air compressor idler
3.
Bearing (with shaft), idler
4.
Ring, rear retaining
5.
Bracket, idler support
6.
Bolt, 1/2 - 13 x 3/4
7.
Washer, 1/2 hardened
Figure 27. - Displaced Style
1.
Shaft, idler pulley
2.
Shield, bearing
3.
Ring, retaining
4.
Bearing, idler
5.
Pulley, air compressor idler
6.
Bracket, idler support
7.
Jam nut
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
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