2004 ISUZU TF SERIES Workshop Manual

Page 1265 of 4264

ISUZU TF SERIES 2004  Workshop Manual ENGINE MECHANICAL   6A – 125 
  
 
 
 
 
 
 
 25.  EGR Valve 
Install the EGR valve assembly to the intake minifold with 
the two gasket. 
Tighten the four nuts to the specified torque. 
Nut Tolque

Page 1266 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6A – 126  ENGINE MECHANICAL 
 
 
LUBRICATION SYSTEM 
LUBRICATING OIL FLOW 
  
 
 
 
 
 
 
 
 
1.  Oil Pump Relief Valve Operating Pressure: 6.2 - 7.8kg/cm 2 (608 - 764Kpa) 
2.  Regulating Valve Oper

Page 1267 of 4264

ISUZU TF SERIES 2004  Workshop Manual ENGINE MECHANICAL   6A – 127 
 
OIL PUMP AND OIL FILTER 
  
 
 
 
RTW46ALF001501 
 
The 4J series engine is equipped with a gear type oil pump. 
The oil filter and the water cooled oil cooler integr

Page 1268 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6A – 128  ENGINE MECHANICAL 
OIL PUMP 
 DISASSEMBLY 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Disassembly Steps     
   1. 
Oil pipe      5. 
Driven gear 
   2. 
Strainer      6.  Relief valve assembly

Page 1269 of 4264

ISUZU TF SERIES 2004  Workshop Manual ENGINE MECHANICAL   6A – 129 
 
 INSPECTION AND REPAIR 
Make the necessary adjustments, repairs, and part replacements if excessive wear or damage is discovered during 
inspection. 
Gear Teeth and B

Page 1270 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6A – 130  ENGINE MECHANICAL 
 
 REASSEMBLY 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Reassembly Steps     
   1. 
Oil pump body      5. 
Pinion gear 
   2. 
Drive gear      6.  Strainer

Page 1271 of 4264

ISUZU TF SERIES 2004  Workshop Manual ENGINE MECHANICAL   6A – 131 
 
OIL FILTER AND OIL COOLER 
 DISASSEMBLY 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Disassembly Steps     
   1. 
Oil filter cartridge      5. 
Body

Page 1272 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6A – 132  ENGINE MECHANICAL 
 
 
 INSPECTION AND REPAIR 
Make the necessary adjustments, repairs, and part replacements if excessive wear or damage is discovered during 
inspection. 
 Oil Cooler 
Wa