2004 ISUZU TF SERIES Workshop Manual

Page 1225 of 4264

ISUZU TF SERIES 2004  Workshop Manual ENGINE MECHANICAL   6A – 85 
  CRANKSHAFT PILOT BEARING 
Check the crankshaft pilot bearing for excessive wear and 
damage and replace it if necessary. 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 Crankshaft Pi

Page 1226 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6A – 86  ENGINE MECHANICAL 
  
 
 
 
 
 Ring Gear Replacement 
Ring Gear Removal 
Strike around the edges of the ring gear with a hammer and 
chisel to remove it. 
 
 
  
 
 Ring Gear Installation

Page 1227 of 4264

ISUZU TF SERIES 2004  Workshop Manual ENGINE MECHANICAL   6A – 87 
 
  3.  Use a feeler gauge to measure the piston ring gap. 
If the measured value exceeds the specified limit, the 
piston ring must be replaced. 
 
 
Piston Ring Gap  m

Page 1228 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6A – 88  ENGINE MECHANICAL 
  
 
 4.  Visually inspect the piston rings. 
If a piston ring groove is damaged or distorted, the piston 
must be replaced. 
 
  
 
 Piston Pin Diameter 
Use a micromete

Page 1229 of 4264

ISUZU TF SERIES 2004  Workshop Manual ENGINE MECHANICAL   6A – 89 
  
 
 RTW36ASH001701 
Piston Head Projection Measuring Point 
1.  Use a dial indicator to measure the piston projection 
amount. 
2.  Refer to the illustration for the p

Page 1230 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6A – 90  ENGINE MECHANICAL 
  
 
 
 
 
 
 CONNECTING ROD 
Connecting Rod Alignment 
Use a connecting rod aligner to measure the distortion and the 
parallelism between the connecting rod big end hol

Page 1231 of 4264

ISUZU TF SERIES 2004  Workshop Manual ENGINE MECHANICAL   6A – 91 
  
 
 
 
 IDLER GEAR SHAFT AND IDLER GEAR 
Idler Gear "A" Shaft Outside Diameter 
Use a micrometer to measure the idler gear shaft outside 
diameter. 
If the measured va

Page 1232 of 4264

ISUZU TF SERIES 2004  Workshop Manual 6A – 92  ENGINE MECHANICAL 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Oil Seal Installation 
Use the special tool to install the front oil seal. 
Front Oil Seal Installer: 5-8840-2361-0 
1.  With the oil se