JLG G6-23A Service Manual - Manual (Page 65)

7.5 G5-19A, G6-23A
Engine: Deutz BF 4M 2012
container. Dispose of properly if coolant needs to be
replaced. Close the radiator petcock.
10. Label, disconnect and cap all coolant hoses
attached to the radiator. Cap all fittings and openings
to keep dirt & debris from entering the cooling
system.
11. Label, disconnect and cap all hydraulic hoses
attached to the radiator. Cap all fittings and openings
to keep dirt & debris from entering the hydraulic
system.
12. Detach the fan safety shroud.
13. Remove the two brackets (1) at the front of the
radiator attached to the frame.
14. Remove the locknuts holding the isolator mounts at
the bottom of the machine.
15. Connect a lifting strap to the radiator/oil cooler and
carefully lift the radiator/oil cooler out of the engine
bay.
b. Radiator/Oil Cooler Installation
1. Install the isolator mounts to the bottom of the
radiator. Insert radiator through the machine frame
and secure to the radiator mount plate with new
locknuts.
2. Be sure the engine fan has clearance in regard to
the radiator. Install the two brackets (1) on the front
of the radiator to the frame.
3. Attach the fan safety shroud.
4. Uncap and reconnect the previously labeled
hydraulic hoses to the appropriate locations.
5. Uncap and reconnect all previously labeled coolant
hoses to the appropriate locations.
6. Fill the coolant overflow bottle with a 50/50 mixture
of ethylene glycol and water.
7. Connect the battery negative (-) cable to the battery
negative (-) terminal.
8. 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. Check the hydraulic fluid level in the
tank and add fluid as required.
9. Attach the belly pan of the engine compartment.
10. Close and secure the engine cover.
7.5 ENGINE ELECTRICAL SYSTEM
The engine electrical system, including the starter,
alternator and primary wiring, is described in Section 9,
“Electrical System.”
7.6 FUEL SYSTEM
7.6.1 Diesel Fuel
Fuel represents a major portion of machine operating
costs and therefore must be used efficiently. ALWAYS
use a premium brand of high-quality, clean diesel fuel.
Low cost, inferior fuel can lead to poor performance and
expensive engine repair.
Note: Use only diesel fuel designed for diesel engines.
Some heating fuels contain harmful chemicals that can
seriously affect engine efficiency and performance.
IMPORTANT: Due to the precise tolerances of diesel
injection systems, keep the fuel clean, and free of dirt
and water. Dirt and water in the fuel system can cause
severe damage to both the injection pump and the
injection nozzles. Use ASTM #2 diesel fuel with a
minimum Cetane rating of 40. #2 diesel fuel gives the
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