TRUCK SERVICE MANUAL
ENGINE
1. Shaft and Bracket
4. Race
7. Spacer
10. "0" Ring Retainer
2, OiI Seal
5. Hub
8. Snap Ring
11. "O" Ring
3. Bearing
6. Pipe Plug
9. Nut
12. Spacer
Fig. 8-4, (N 10839). Fan hub assembly with tapered roller bearing and spacer
e. High-range thermostats start opening at 180 deg. F
[82 deg. C] and are fully open at 195 deg. F [91 deg. C]
.
3. Discard thermostat if it does not operate in correct
range.
ASSEMBLY
1. Using ST-1225 Seal Mandrel, install new seal(s) into
thermostat housing. Seals must be installed with part
number, or metal flange of seal up, toward mandrel
during installation, to insure proper operation.
2. Install new or tested thermostat into housing with vent
hole at top. Install thermostat cover and water outlet
connection.
TESTING RELIEF VALVE
Pressurize exchanger to 7 psi [0.5 kg/sq cm]; relief valve
should be open. If relief valve opens below 7 psi [0.5
kg/sq cm] or fails to open at 7 psi [0.5 kg/sq cm], mark
for replacement.
CONVERTER COOLER
See Support, Pump Mounted or Auxiliary Oil Cooler
(Group 7).
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