Why do manufacturers pressurize the cooling system?
Pressurized Coolant Has a Higher Boiling Point The reason that automotive cooling systems are pressurized is because non-pressurized coolant’s boiling point is to low for effective cooling. To further raise its boiling point, automakers design cooling systems so that they’ll hold pressure.
What does pressurizing the cooling system raise?
It raises the boiling point of the coolant. This allows for a higher operating temperature range. The boiling point goes up 3° F for every pound of pressure (psi). A 15-psi radiator cap will raise the boiling point by 45° F.
What kind of exhaust system does a Hino truck have?
OIL HINO PARTIAL ENGINES & SHORT BLOCKS EXHAUST SYSTEM FAI 4 FB14 1987 TO FA,’FB 1992 TO FDFE16 1986 & 1987 FD/GC17 1988 TO 1991 FEFF171984 TO 1991 SF17 FFCI 1987 & 1988… FG19&SG 19 1984 TO 1991. SECTION TABLE OF CONTENTS CONTENTS 1993 TO 1997 PAGE N 0 Q R s EXHAUST SYSTEM FD20: GC20; FEFF20; SG20 1992..
Why is the oil cooler on my Hino overheating?
The oil cooler can cause loss of flow. The tubes are very small through the oil cooler. That is why it is recommended to change the oil cooler when the EGR blows because when it plugs up, the EGR overheats and cracks causing the gases to get into the cooling system.
How can I tell if my Hino truck has a head leak?
If not, it is easy. Put a pressure tester on the system. Remove the hand pump side. Fill a 2 liter bottle with water. Insert the hose end of the pressure tester into the bottle. Start the truck and watch for bubbles. Small bubbles ind a EGR leak. Large bubble indicate a head leak. You can have a EGR leak and not show signs of coolant.
When did the Hino parts catalog come out?
CATALOGS HINO PARTS CATALOGS NOTE: 1984 through Parts are available as printed parts catalogs only. 1997 Hino Pans Catalogs are available in sots ot microfiche or in prunted parts catabgs. ACM a lotter the end ot the to specify a tx»ok ‘my ot the catalog. LATEST REVISION DATE 85 t 990 1991 1992 MODEL FE17