2004 ISUZU TF SERIES Workshop Manual

Page 4201 of 4264

ISUZU TF SERIES 2004  Workshop Manual UNIT REPAIR (JR405E)  7A4-27 
 
Spring specifications 
No. Valve nomenclature Free length 
(mm / in) Outside 
diameter (mm 
/ in) Linear 
diameter (mm 
/ in) Number of 
coils 
14  Pressure relief  49.

Page 4202 of 4264

ISUZU TF SERIES 2004  Workshop Manual 7A4-28  UNIT REPAIR (JR405E) 
   OIL PUMP ASSEMBLY 
 
 01PUMP32 
Legend 
  1. Oil seal  
  2. O-ring (small) 
  3. Oil pump housing 
  4. Inner rotor 
  5. Outer rotor 
    
 
  6. Oil pump cover

Page 4203 of 4264

ISUZU TF SERIES 2004  Workshop Manual UNIT REPAIR (JR405E)  7A4-29 
 
04PUMP10 
  
    
  Separate the oil pump cover from the oil pump housing 
by tapping on each of the bolts with a plastic hammer. 
  
 
 
06PUMP13 
  
   3. Inner roto

Page 4204 of 4264

ISUZU TF SERIES 2004  Workshop Manual 7A4-30  UNIT REPAIR (JR405E) 
 
09PUMP05 
  
   7. Seal ring  
Remove the 4 seal rings from the oil pump cover. 
  
 
 
11PUMP43 
  
 Inspection 
Oil pump cover  
   Install new seal rings to the oil

Page 4205 of 4264

ISUZU TF SERIES 2004  Workshop Manual UNIT REPAIR (JR405E)  7A4-31 
  
     
 Reassembly steps 
 
15PUMP18 
 
   1. O-ring (small)  
Install new O-ring (small) to the oil pump housing.  
 
16PUMP29 
  
   2. Outer rotor  
3. Inner rotor

Page 4206 of 4264

ISUZU TF SERIES 2004  Workshop Manual 7A4-32  UNIT REPAIR (JR405E) 
   CLUTCH PACK (REVERSE AND  
HIGH CLUTCH ASSEMBLY) 
 
 01R&H17 
Legend 
  1. Reverse and high clutch drum  
  2. Seal ring (reverse clutch) 
  3. Lip seal (reverse clutc

Page 4207 of 4264

ISUZU TF SERIES 2004  Workshop Manual UNIT REPAIR (JR405E)  7A4-33 
 
03R&H21 
  
   2.  Retaining plate, drive plate, driven plate and dish plate 
Remove the reverse clutch retaining plate, the 2 drive
plates, the 2 driven plates, and th

Page 4208 of 4264

ISUZU TF SERIES 2004  Workshop Manual 7A4-34  UNIT REPAIR (JR405E) 
 
08R&H36 
  
   8.  High clutch piston  
9.  Reverse clutch piston     Install the reverse and high clutch drum to the oil pump. 
    Force compressed air into the oil