JLG sky trak mmv Service Manual page 647

12
13
11
7. Place a funnel at the base of the radiator to channel
the drained coolant into the container. Open the
radiator drain plug (11) or petcock and allow the
coolant to drain into the funnel. Transfer the coolant
into a properly labeled container. Dispose of properly
if coolant needs to be replaced. Close the radiator
drain plug or petcock.
8. Remove plastic retainer (1) from around engine
block heater element (2) and 110 volt cord (3). Using
a 29 mm socket, remove heating element from
engine block.
b. Engine Block Heater Disassembly
DO NOT disassemble the heater element (1). Replace a
defective or faulty heater with a new one.
c. Engine Block Heater Inspection and
Replacement
Inspect the block heater element (1) and the 110 volt
cord (3) for cuts or exposed wires. Replace a defective or
faulty block heater.
Model MMV Rev. 12/04
d. Engine Block Heater Testing
Note: The following test should be performed with a
cold engine.
The coolant heater unit (1) can be tested on the machine
by plugging the 110 volt cord (3) into a 110 volt outlet. Af-
ter 20 to 30 minutes, place your hand on the engine
block (4) next to the heater. If the heater element is func-
tioning properly, you will feel the heat at that location. If
the block is cold, the heater element is defective and
should be replaced.
e. Engine Block Heater Installation
1. Apply Teflon tape to engine block heater element
threads (2) and install element. DO NOT over
tighten. Plug-in 110 volt cord (3) into heater element
and install the knurled retainer (1) around coolant
heater element and 110 volt cord (3).
MM2041
2. Fill radiator with coolant.
3. Connect the negative (-) battery cable (8) at the
battery negative (-) terminal on the battery in the
engine side battery box.
4. Connect the negative (-) battery equalizer cable (9)
at the bottom of the battery equalizer (10). Torque
the nut to a maximum of 100 lbs/in (11 Nm).
5. Replace engine side battery box cover (5). Use the
wing nuts (6) and carriage bolts (7) to secure the
cover in place.
Note: When the coolant heater is not in use, secure the
110 volt cord with a wire tie to prevent damage to cord.
6. Fill the cooling system. Run the engine to operating
temperature. Visually check for leaks with the engine
running. Check the coolant level in the overflow
bottle (13) and fill, or drain, as necessary.
Electrical System
10.167