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Hino 338 ac problem

M.neal

New Recruit
Mechanic
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Hello I'm new to the forum, this site has came up several times doing a google search about Hinos.

I work for a produce company with about 135 trucks, some of which about 30 are 2016/7 hino 338s. well with this truck the Ac compressor is doing a short cycle. engaging the clutch for about 2 seconds and staying off for about 10 seconds. I've vacuumed the system a few times at 20 mins each and have not had a leak. The system has the right amount of oil. I've also replaced the compressor already.

A high press switch as been ordered and I see that it doesn't have a low pressure switch.

relay is fine fuses are fine blower motor is fine..... what am I missing? any insight would be lovely thanks
 

M.neal

New Recruit
Mechanic
Offline
What are the pressures with the compressor on?
I would have to get back to you on that. I let the truck go for the time being and told him to roll the window down lol. once I get the switch here at the shop I will check that.
 
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