JLG sky trak mmv Service Manual page 261

3
5
9. While lifting the automatic belt tensioner (5) away
from the belt, remove the fan drive belt (4).
10. Loosen the lower alternator bracket capscrew (6) on
the bottom of the alternator (7). Remove the upper
alternator mounting capscrew (8) and lower the
alternator.
7
11. Remove the three capscrews (9) securing the
thermostat housing (10) to the engine.
Model MMV Rev. 12/04
4
12. Remove the thermostat housing (10), old
gasket (11), thermostat (12), thermostat seal (13)
MT1840
and engine lift bracket (14). Clean all gasket
surfaces (15). 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.
b. Thermostat Installation
Note: Ensure that notched edge of thermostat seal (13)
is facing thermostat.
1. Install the engine lift bracket (14), thermostat
seal (13), thermostat (12) gasket (11) and
8
thermostat housing (10). Secure with the three
capscrews (9) removed earlier. Torque to 18 lb/ft
(24 Nm).
2. Raise the alternator (7) and install the alternator
mounting capscrew (8) and alternator link
capscrew (6). Torque to 32 lb/ft (43 Nm).
3. Insert a 1/2" drive ratchet or breaker bar into the
automatic belt tensioner housing (3) and lift the
automatic belt tensioner (5). With the automatic
tensioner lifted out of the way, install the fan drive
MM3010
belt (4).
4. Connect the negative (-) battery cable (16) at the
6
negative (-) terminal on the battery in the engine side
battery box.
5. Connect the negative (-) battery equalizer cable (17)
at the bottom of the battery equalizer (18). Torque
the nut to a maximum of 100 lbs/in (11 Nm).
Engine: Cummins 4BTA 3.9
11
10
12
9
15
14
13
13
MS1160
8.9