Lull 944E-42 Service Manual - Manual (Page 212)

Engine: Cummins 4BT 3.9, B4.5T and QSB 4.5T
7.10 Model 644E-42/944E-42 Rev. 6/04
8. Insert a 3/8” drive rachet into the automatic belt
tensioner housing (1), and remove the tension from
the fan drive belt (2) by rotating the tensioner inward.
With the tension removed, remove the belt.
9. Remove both of the lower exhaust bracket (3)
bolts (4). Loosen the exhaust upper lap-joint tube
clamp bolts (5), so that the exhaust pipe will
separate from the flex tube. Loosen the V-band
clamp (6) bolt to separate the exhaust tube (7) from
the turbo exhaust outlet. Remove the upper exhaust
tube assembly.
10. Remove the lower alternator bracket capscrew on
the bottom of the alternator (8). Remove the upper
alternator mounting capscrew (9), and remove the
alternator from it’s place.
11. Remove the three capscrews (10) securing the
upper alternator mounting bracket (11).
12. Remove the three capscrews securing the
thermostat housing (12) to the engine.
13. Remove the thermostat housing (13), old gasket
(14), thermostat (15), thermostat seal (16), and
engine lift bracket (17). Clean all the gasket surfaces
(13). DO NOT let any debris into the thermostat
opening while the thermostat is removed.
IMPORTANT: ALWAYS use the correct thermostat and
install a new gasket. NEVER operate the engine without
a thermostat, or engine damage will result.
MU1330
1 2
MU2071
Front
3 4
5
6
7
MU1460
8
9
10
11
MS1160
12
13
14
15
16
17
16