John Deere POWERTECH 4045 - Manual (Page 155)

Lubrication & Maintenance/500 Hour/12 Month
OUOD002,0000169 –19–27JUL06–1/1
Checking Engine Electrical Ground
Connections
Keep all engine ground connections clean and tight to
prevent electrical arcing which can damage electronic
components.
Also see precautions in Troubleshooting Section when
welding on engine or machine.
OURGP11,0000151 –19–27JUL06–1/1
Checking Cooling System
TS281
–UN–23AUG88
High-Pressure Fluids
CAUTION: Explosive release of fluids from
pressurized cooling system can cause serious
burns.
Shut off engine. Only remove filler cap when
cool enough to touch with bare hands. Slowly
loosen cap to first stop to relieve pressure
before removing completely.
IMPORTANT: Air must be expelled from cooling
system when system is refilled. Loosen
temperature sending unit fitting at rear
of cylinder head or plug in thermostat
housing to allow air to escape when
filling system. Retighten fitting or plug
when all the air has been expelled.
1. Visually check entire cooling system for leaks. Tighten
all clamps securely.
2. Thoroughly inspect all cooling system hoses for hard,
flimsy, or cracked condition. Replace hoses if any of
the above conditions are found.
3. Inspect the coolant pump for wear or leakage.
30-16
080706
PN=153