Checking Fan Belt Tension; Checking Fan Belt Damage And Wear; Checking Radiator Cap Air Leakage - Kubota D1803-CR-E4 Workshop Manual

4. ENGINE

4.4 Checking fan belt tension

1. Push the belt halfway between the fan drive pulley
and alternator pulley at a specified force to measure
the deflection (A).
NOTE
• If the measurement is out of the service
specifications,
mounting screws and adjust its position.
Service specifi-
Deflection (A)
cation
(A) Fan belt halfway
4.5 Checking fan belt damage and
wear
1. Check the fan belt for damage.
(A) Good
NOTE
• If the fan belt has a damage, replace it.
2. Check if the fan belt is worn out and sunk in the
pulley groove.
4-100
loosen the alternator
10.0 to 12.0 mm
0.394 to 0.472 in.
(under load of 98 N
(10 kg, 22.1 lbf))
(B) Bad
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
(A) Good
NOTE
• If it is "Bad" (B), replace it.
4.6 Checking radiator cap air
leakage
CAUTION
• Remove the radiator cap only after you stop the
engine for a minimum of 10 minutes to decrease
its temperature.
If not, hot water can gush out and cause injury.
Tools required
• Radiator cap tester and an adapter
1. Set a radiator tester and an adapter on the radiator
cap.
2. Apply the specified pressure.
Specified pressure
SERVICING
4. Checking and adjusting
(B) Bad
88 kPa
2
0.90 kgf/cm
12 psi
KiSC issued 12, 2018 A