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Komatsu wb93r-5 backhoe overheating

A

Aaron.ampcon

Well-Known Member
Joined
Mar 19, 2020
Messages
116
Location
Ghana
Got a overheating issue on this machine, shuts off when hot and wouldn't restart till cool down, seems hydraulic is hotter than normal aswell, thermostat was removed to no improvement. What should I look at?
 
D

Delmer

Senior Member
Joined
Jan 3, 2013
Messages
8,903
Location
WI
Put the thermostat back in. If there were three ports for water to come and go from the thermostat, then it's a bypass thermostat and has to be in there.

First thing to check is always a plugged radiator so there's not enough air moving through it. You can put a light on one side and see how much dirt is blocking it, or check the temps of the coolant going to the radiator and coming back when it's overheating, that will usually show not enough temperature drop through the radiator, showing not enough air movement.
 
A

Aaron.ampcon

Well-Known Member
Joined
Mar 19, 2020
Messages
116
Location
Ghana
The radiator was removed and cleaned. Whats the best way to check water pump without removing?
 
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