TYM T233 HST - Trouble Shooting

8. TROUBLE SHOOTING
Problems Causes Countermeasures
1) Overheating (1) Low coolant level (1)Replenish coolant and inspect
water leaks.
(2) Fatigued pressure valve spring (2)Replace radiator cap.
(3) Loose or broken fan belt (3)Adjust belt tension or replace.
(4) Oily fan belt (4)Replace.
(5) Poor thermostat (5)Replace.
(6) Poor water pump or water leaks (6)Repair or replace.
(7) Clogged water passages (7)Clean radiator and water
passages.
(8) Improper injection timing (8) Adjust injection timing.
(9) Clogged air ways (9) Clean radiator exterior.
(10) Fuel gas enters water jacket due
to broken cylinder gasket
(10) Inspect cylinder head and
replace cylinder gasket
2) Overcooling (1) Poor thermostat (1)Replace
(2) Excessive low atmospheric
temperature
(2) Decrease radiator working area
by radiator masking.
TABLE 3-1
temperature
by radiator masking.
3)Lose of coolant (1) Leaking radiator (1)Repair or replace
(2) Loosely clamped or broken water
hose
(2)Retighten or replace
(3) Fatigued pressure valve spring (3)Replace radiator cap
(4) Leaking water pump (4)Repair or replace
(5) Water leakage through cylinder
head gasket
(5) Inspect cylinder head and
Replace gasket
(6) Cracked cylinder head or body (6)Replace
4) Noisy cooling
fan
(1) Poor water pump bearing (1)Replace
(2) Loose or bent fan (2)Retighten or replace
(3) Unbalanced fan (3)Replace.
(4) Poor fan belt (4)Replace.
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