SkyTrak 6036 Service Manual User Manual

Page 187

7.9

Model 6036 Legacy

Engine: Cummins 4BT3.9

8. Remove the three capscrews (Fig. 7-6, 1) securing

the thermostat housing (2) to the engine.

Figure 7-6 Typical Engine Thermostat Housing

9. Remove the thermostat housing (Fig. 7 -6, 2), old

gasket (3), thermostat (4), thermostat seal (5) and
engine lift bracket (6). Clean all gasket surfaces (7).
DO NOT let any debris into the thermostat opening.

IMPORTANT: ALWAYS use the correct thermostat and
install a new gasket. NEVER operate the engine without
a thermostat, or engine damage will result.

b. Thermostat Installation

Note: Ensure that notched edge (arrow) of thermostat
seal (Fig. 7-6, 5) is facing the thermostat.

1. Install the engine lift bracket (Fig. 7 -6, 6), thermostat

seal (5), thermostat (4) gasket (3) and thermostat
housing (2). Secure with the three capscrews (1)
removed earlier. Torque to 18 lb/ft (24 Nm).

2. Raise the alternator (Fig. 7 -5, 2), and install the

alternator mounting capscrew (3) and alternator
bracket capscrew (1). Torque to 32 lb/ft (43 Nm).

3. Insert a 1/2" drive ratchet or breaker bar into the

automatic belt tensioner housing (Fig. 7-4, 1) and
remove the tension from the automatic belt tensioner
pulley (3). While applying pressure, install the fan
drive belt (2).

4. Connect the negative (-) battery cable (Fig. 7-2, 1).

5. Open the radiator cap (not shown), and fill the

radiator completely with a 50/50 mixture of ethylene
glycol and water. Replace and tighten the radiator
cap. Add coolant to the overflow bottle until the bottle
is 1/4 to 1/2 full. This overfilling will compensate for
any air trapped in the cooling system.

6. Run the engine to operating temperature. Visually

check for leaks with the engine running. Check the
coolant level in the overflow bottle and fill, or drain,
as necessary.

MS1160